+++ /dev/null
-/* Subroutines for insn-output.c for Motorola 88000.
- Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001 Free Software Foundation, Inc.
- Contributed by Michael Tiemann (tiemann@mcc.com)
- Currently maintained by (gcc@dg-rtp.dg.com)
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#include "config.h"
-#include "system.h"
-#include "rtl.h"
-#include "regs.h"
-#include "hard-reg-set.h"
-#include "real.h"
-#include "insn-config.h"
-#include "conditions.h"
-#include "output.h"
-#include "insn-attr.h"
-#include "tree.h"
-#include "function.h"
-#include "expr.h"
-#include "libfuncs.h"
-#include "c-tree.h"
-#include "flags.h"
-#include "recog.h"
-#include "toplev.h"
-#include "tm_p.h"
-#include "target.h"
-#include "target-def.h"
-
-extern int flag_traditional;
-extern FILE *asm_out_file;
-
-const char *m88k_pound_sign = ""; /* Either # for SVR4 or empty for SVR3 */
-const char *m88k_short_data;
-const char *m88k_version;
-char m88k_volatile_code;
-
-unsigned m88k_gp_threshold = 0;
-int m88k_prologue_done = 0; /* Ln directives can now be emitted */
-int m88k_function_number = 0; /* Counter unique to each function */
-int m88k_fp_offset = 0; /* offset of frame pointer if used */
-int m88k_stack_size = 0; /* size of allocated stack (including frame) */
-int m88k_case_index;
-
-rtx m88k_compare_reg; /* cmp output pseudo register */
-rtx m88k_compare_op0; /* cmpsi operand 0 */
-rtx m88k_compare_op1; /* cmpsi operand 1 */
-
-enum processor_type m88k_cpu; /* target cpu */
-
-static void m88k_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT));
-static void m88k_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
-static void m88k_output_function_end_prologue PARAMS ((FILE *));
-static void m88k_output_function_begin_epilogue PARAMS ((FILE *));
-#if defined (CTOR_LIST_BEGIN) && !defined (OBJECT_FORMAT_ELF)
-static void m88k_svr3_asm_out_constructor PARAMS ((rtx, int));
-static void m88k_svr3_asm_out_destructor PARAMS ((rtx, int));
-#endif
-
-static int m88k_adjust_cost PARAMS ((rtx, rtx, rtx, int));
-\f
-/* Initialize the GCC target structure. */
-#undef TARGET_ASM_BYTE_OP
-#define TARGET_ASM_BYTE_OP "\tbyte\t"
-#undef TARGET_ASM_ALIGNED_HI_OP
-#define TARGET_ASM_ALIGNED_HI_OP "\thalf\t"
-#undef TARGET_ASM_ALIGNED_SI_OP
-#define TARGET_ASM_ALIGNED_SI_OP "\tword\t"
-#undef TARGET_ASM_UNALIGNED_HI_OP
-#define TARGET_ASM_UNALIGNED_HI_OP "\tuahalf\t"
-#undef TARGET_ASM_UNALIGNED_SI_OP
-#define TARGET_ASM_UNALIGNED_SI_OP "\tuaword\t"
-
-#undef TARGET_ASM_FUNCTION_PROLOGUE
-#define TARGET_ASM_FUNCTION_PROLOGUE m88k_output_function_prologue
-#undef TARGET_ASM_FUNCTION_END_PROLOGUE
-#define TARGET_ASM_FUNCTION_END_PROLOGUE m88k_output_function_end_prologue
-#undef TARGET_ASM_FUNCTION_BEGIN_EPILOGUE
-#define TARGET_ASM_FUNCTION_BEGIN_EPILOGUE m88k_output_function_begin_epilogue
-#undef TARGET_ASM_FUNCTION_EPILOGUE
-#define TARGET_ASM_FUNCTION_EPILOGUE m88k_output_function_epilogue
-
-#undef TARGET_SCHED_ADJUST_COST
-#define TARGET_SCHED_ADJUST_COST m88k_adjust_cost
-
-struct gcc_target targetm = TARGET_INITIALIZER;
-\f
-/* Determine what instructions are needed to manufacture the integer VALUE
- in the given MODE. */
-
-enum m88k_instruction
-classify_integer (mode, value)
- enum machine_mode mode;
- register int value;
-{
- if (value == 0)
- return m88k_zero;
- else if (SMALL_INTVAL (value))
- return m88k_or;
- else if (SMALL_INTVAL (-value))
- return m88k_subu;
- else if (mode == HImode)
- return m88k_or_lo16;
- else if (mode == QImode)
- return m88k_or_lo8;
- else if ((value & 0xffff) == 0)
- return m88k_oru_hi16;
- else if (integer_ok_for_set (value))
- return m88k_set;
- else
- return m88k_oru_or;
-}
-
-/* Return the bit number in a compare word corresponding to CONDITION. */
-
-int
-condition_value (condition)
- rtx condition;
-{
- switch (GET_CODE (condition))
- {
- case EQ: return 2;
- case NE: return 3;
- case GT: return 4;
- case LE: return 5;
- case LT: return 6;
- case GE: return 7;
- case GTU: return 8;
- case LEU: return 9;
- case LTU: return 10;
- case GEU: return 11;
- default: abort ();
- }
-}
-
-int
-integer_ok_for_set (value)
- register unsigned value;
-{
- /* All the "one" bits must be contiguous. If so, MASK + 1 will be
- a power of two or zero. */
- register unsigned mask = (value | (value - 1));
- return (value && POWER_OF_2_or_0 (mask + 1));
-}
-
-const char *
-output_load_const_int (mode, operands)
- enum machine_mode mode;
- rtx *operands;
-{
- static const char *const patterns[] =
- { "or %0,%#r0,0",
- "or %0,%#r0,%1",
- "subu %0,%#r0,%n1",
- "or %0,%#r0,%h1",
- "or %0,%#r0,%q1",
- "set %0,%#r0,%s1",
- "or.u %0,%#r0,%X1",
- "or.u %0,%#r0,%X1\n\tor %0,%0,%x1",
- };
-
- if (! REG_P (operands[0])
- || GET_CODE (operands[1]) != CONST_INT)
- abort ();
- return patterns[classify_integer (mode, INTVAL (operands[1]))];
-}
-
-/* These next two routines assume that floating point numbers are represented
- in a manner which is consistent between host and target machines. */
-
-const char *
-output_load_const_float (operands)
- rtx *operands;
-{
- /* These can return 0 under some circumstances when cross-compiling. */
- operands[0] = operand_subword (operands[0], 0, 0, SFmode);
- operands[1] = operand_subword (operands[1], 0, 0, SFmode);
-
- return output_load_const_int (SImode, operands);
-}
-
-const char *
-output_load_const_double (operands)
- rtx *operands;
-{
- rtx latehalf[2];
-
- /* These can return zero on some cross-compilers, but there's nothing
- we can do about it. */
- latehalf[0] = operand_subword (operands[0], 1, 0, DFmode);
- latehalf[1] = operand_subword (operands[1], 1, 0, DFmode);
-
- operands[0] = operand_subword (operands[0], 0, 0, DFmode);
- operands[1] = operand_subword (operands[1], 0, 0, DFmode);
-
- output_asm_insn (output_load_const_int (SImode, operands), operands);
-
- operands[0] = latehalf[0];
- operands[1] = latehalf[1];
-
- return output_load_const_int (SImode, operands);
-}
-
-const char *
-output_load_const_dimode (operands)
- rtx *operands;
-{
- rtx latehalf[2];
-
- latehalf[0] = operand_subword (operands[0], 1, 0, DImode);
- latehalf[1] = operand_subword (operands[1], 1, 0, DImode);
-
- operands[0] = operand_subword (operands[0], 0, 0, DImode);
- operands[1] = operand_subword (operands[1], 0, 0, DImode);
-
- output_asm_insn (output_load_const_int (SImode, operands), operands);
-
- operands[0] = latehalf[0];
- operands[1] = latehalf[1];
-
- return output_load_const_int (SImode, operands);
-}
-\f
-/* Emit insns to move operands[1] into operands[0].
-
- Return 1 if we have written out everything that needs to be done to
- do the move. Otherwise, return 0 and the caller will emit the move
- normally.
-
- SCRATCH if non zero can be used as a scratch register for the move
- operation. It is provided by a SECONDARY_RELOAD_* macro if needed. */
-
-int
-emit_move_sequence (operands, mode, scratch)
- rtx *operands;
- enum machine_mode mode;
- rtx scratch;
-{
- register rtx operand0 = operands[0];
- register rtx operand1 = operands[1];
-
- if (CONSTANT_P (operand1) && flag_pic
- && pic_address_needs_scratch (operand1))
- operands[1] = operand1 = legitimize_address (1, operand1, 0, 0);
-
- /* Handle most common case first: storing into a register. */
- if (register_operand (operand0, mode))
- {
- if (register_operand (operand1, mode)
- || (GET_CODE (operand1) == CONST_INT && SMALL_INT (operand1))
- || GET_CODE (operand1) == HIGH
- /* Only `general_operands' can come here, so MEM is ok. */
- || GET_CODE (operand1) == MEM)
- {
- /* Run this case quickly. */
- emit_insn (gen_rtx_SET (VOIDmode, operand0, operand1));
- return 1;
- }
- }
- else if (GET_CODE (operand0) == MEM)
- {
- if (register_operand (operand1, mode)
- || (operand1 == const0_rtx && GET_MODE_SIZE (mode) <= UNITS_PER_WORD))
- {
- /* Run this case quickly. */
- emit_insn (gen_rtx_SET (VOIDmode, operand0, operand1));
- return 1;
- }
- if (! reload_in_progress && ! reload_completed)
- {
- operands[0] = validize_mem (operand0);
- operands[1] = operand1 = force_reg (mode, operand1);
- }
- }
-
- /* Simplify the source if we need to. */
- if (GET_CODE (operand1) != HIGH && immediate_operand (operand1, mode))
- {
- if (GET_CODE (operand1) != CONST_INT
- && GET_CODE (operand1) != CONST_DOUBLE)
- {
- rtx temp = ((reload_in_progress || reload_completed)
- ? operand0 : 0);
- operands[1] = legitimize_address (flag_pic
- && symbolic_address_p (operand1),
- operand1, temp, scratch);
- if (mode != SImode)
- operands[1] = gen_rtx_SUBREG (mode, operands[1], 0);
- }
- }
-
- /* Now have insn-emit do whatever it normally does. */
- return 0;
-}
-
-/* Return a legitimate reference for ORIG (either an address or a MEM)
- using the register REG. If PIC and the address is already
- position-independent, use ORIG. Newly generated position-independent
- addresses go into a reg. This is REG if non zero, otherwise we
- allocate register(s) as necessary. If this is called during reload,
- and we need a second temp register, then we use SCRATCH, which is
- provided via the SECONDARY_INPUT_RELOAD_CLASS mechanism. */
-
-struct rtx_def *
-legitimize_address (pic, orig, reg, scratch)
- int pic;
- rtx orig;
- rtx reg;
- rtx scratch;
-{
- rtx addr = (GET_CODE (orig) == MEM ? XEXP (orig, 0) : orig);
- rtx new = orig;
- rtx temp, insn;
-
- if (pic)
- {
- if (GET_CODE (addr) == SYMBOL_REF || GET_CODE (addr) == LABEL_REF)
- {
- if (reg == 0)
- {
- if (reload_in_progress || reload_completed)
- abort ();
- else
- reg = gen_reg_rtx (Pmode);
- }
-
- if (flag_pic == 2)
- {
- /* If not during reload, allocate another temp reg here for
- loading in the address, so that these instructions can be
- optimized properly. */
- temp = ((reload_in_progress || reload_completed)
- ? reg : gen_reg_rtx (Pmode));
-
- emit_insn (gen_rtx_SET
- (VOIDmode, temp,
- gen_rtx_HIGH (SImode,
- gen_rtx_UNSPEC (SImode,
- gen_rtvec (1, addr),
- 0))));
-
- emit_insn (gen_rtx_SET
- (VOIDmode, temp,
- gen_rtx_LO_SUM (SImode, temp,
- gen_rtx_UNSPEC (SImode,
- gen_rtvec (1, addr),
- 0))));
- addr = temp;
- }
-
- new = gen_rtx_MEM (Pmode,
- gen_rtx_PLUS (SImode,
- pic_offset_table_rtx, addr));
-
- current_function_uses_pic_offset_table = 1;
- RTX_UNCHANGING_P (new) = 1;
- insn = emit_move_insn (reg, new);
- /* Put a REG_EQUAL note on this insn, so that it can be optimized
- by loop. */
- REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, orig,
- REG_NOTES (insn));
- new = reg;
- }
- else if (GET_CODE (addr) == CONST)
- {
- rtx base;
-
- if (GET_CODE (XEXP (addr, 0)) == PLUS
- && XEXP (XEXP (addr, 0), 0) == pic_offset_table_rtx)
- return orig;
-
- if (reg == 0)
- {
- if (reload_in_progress || reload_completed)
- abort ();
- else
- reg = gen_reg_rtx (Pmode);
- }
-
- if (GET_CODE (XEXP (addr, 0)) != PLUS) abort ();
-
- base = legitimize_address (1, XEXP (XEXP (addr, 0), 0), reg, 0);
- addr = legitimize_address (1, XEXP (XEXP (addr, 0), 1),
- base == reg ? 0 : reg, 0);
-
- if (GET_CODE (addr) == CONST_INT)
- {
- if (ADD_INT (addr))
- return plus_constant (base, INTVAL (addr));
- else if (! reload_in_progress && ! reload_completed)
- addr = force_reg (Pmode, addr);
- /* We can't create any new registers during reload, so use the
- SCRATCH reg provided by the reload_insi pattern. */
- else if (scratch)
- {
- emit_move_insn (scratch, addr);
- addr = scratch;
- }
- else
- /* If we reach here, then the SECONDARY_INPUT_RELOAD_CLASS
- macro needs to be adjusted so that a scratch reg is provided
- for this address. */
- abort ();
- }
- new = gen_rtx_PLUS (SImode, base, addr);
- /* Should we set special REG_NOTEs here? */
- }
- }
- else if (! SHORT_ADDRESS_P (addr, temp))
- {
- if (reg == 0)
- {
- if (reload_in_progress || reload_completed)
- abort ();
- else
- reg = gen_reg_rtx (Pmode);
- }
-
- emit_insn (gen_rtx_SET (VOIDmode,
- reg, gen_rtx_HIGH (SImode, addr)));
- new = gen_rtx_LO_SUM (SImode, reg, addr);
- }
-
- if (new != orig
- && GET_CODE (orig) == MEM)
- {
- new = gen_rtx_MEM (GET_MODE (orig), new);
- MEM_COPY_ATTRIBUTES (new, orig);
- }
- return new;
-}
-\f
-/* Support functions for code to emit a block move. There are four methods
- used to perform the block move:
- + call memcpy
- + call the looping library function, e.g. __movstrSI64n8
- + call a non-looping library function, e.g. __movstrHI15x11
- + produce an inline sequence of ld/st instructions
-
- The parameters below describe the library functions produced by
- movstr-m88k.sh. */
-
-#define MOVSTR_LOOP 64 /* __movstrSI64n68 .. __movstrSI64n8 */
-#define MOVSTR_QI 16 /* __movstrQI16x16 .. __movstrQI16x2 */
-#define MOVSTR_HI 48 /* __movstrHI48x48 .. __movstrHI48x4 */
-#define MOVSTR_SI 96 /* __movstrSI96x96 .. __movstrSI96x8 */
-#define MOVSTR_DI 96 /* __movstrDI96x96 .. __movstrDI96x16 */
-#define MOVSTR_ODD_HI 16 /* __movstrHI15x15 .. __movstrHI15x5 */
-#define MOVSTR_ODD_SI 48 /* __movstrSI47x47 .. __movstrSI47x11,
- __movstrSI46x46 .. __movstrSI46x10,
- __movstrSI45x45 .. __movstrSI45x9 */
-#define MOVSTR_ODD_DI 48 /* __movstrDI47x47 .. __movstrDI47x23,
- __movstrDI46x46 .. __movstrDI46x22,
- __movstrDI45x45 .. __movstrDI45x21,
- __movstrDI44x44 .. __movstrDI44x20,
- __movstrDI43x43 .. __movstrDI43x19,
- __movstrDI42x42 .. __movstrDI42x18,
- __movstrDI41x41 .. __movstrDI41x17 */
-
-/* Limits for using the non-looping movstr functions. For the m88100
- processor, we assume the source and destination are word aligned.
- The QImode and HImode limits are the break even points where memcpy
- does just as well and beyond which memcpy does better. For the
- m88110, we tend to assume double word alignment, but also analyze
- the word aligned cases. The analysis is complicated because memcpy
- may use the cache control instructions for better performance. */
-
-#define MOVSTR_QI_LIMIT_88100 13
-#define MOVSTR_HI_LIMIT_88100 38
-#define MOVSTR_SI_LIMIT_88100 MOVSTR_SI
-#define MOVSTR_DI_LIMIT_88100 MOVSTR_SI
-
-#define MOVSTR_QI_LIMIT_88000 16
-#define MOVSTR_HI_LIMIT_88000 38
-#define MOVSTR_SI_LIMIT_88000 72
-#define MOVSTR_DI_LIMIT_88000 72
-
-#define MOVSTR_QI_LIMIT_88110 16
-#define MOVSTR_HI_LIMIT_88110 38
-#define MOVSTR_SI_LIMIT_88110 72
-#define MOVSTR_DI_LIMIT_88110 72
-
-static const enum machine_mode mode_from_align[] =
- {VOIDmode, QImode, HImode, VOIDmode, SImode,
- VOIDmode, VOIDmode, VOIDmode, DImode};
-static const int max_from_align[] = {0, MOVSTR_QI, MOVSTR_HI, 0, MOVSTR_SI,
- 0, 0, 0, MOVSTR_DI};
-static const int all_from_align[] = {0, MOVSTR_QI, MOVSTR_ODD_HI, 0,
- MOVSTR_ODD_SI, 0, 0, 0, MOVSTR_ODD_DI};
-
-static const int best_from_align[3][9] = {
- {0, MOVSTR_QI_LIMIT_88100, MOVSTR_HI_LIMIT_88100, 0, MOVSTR_SI_LIMIT_88100,
- 0, 0, 0, MOVSTR_DI_LIMIT_88100},
- {0, MOVSTR_QI_LIMIT_88110, MOVSTR_HI_LIMIT_88110, 0, MOVSTR_SI_LIMIT_88110,
- 0, 0, 0, MOVSTR_DI_LIMIT_88110},
- {0, MOVSTR_QI_LIMIT_88000, MOVSTR_HI_LIMIT_88000, 0, MOVSTR_SI_LIMIT_88000,
- 0, 0, 0, MOVSTR_DI_LIMIT_88000}
-};
-
-static void block_move_loop PARAMS ((rtx, rtx, rtx, rtx, int, int));
-static void block_move_no_loop PARAMS ((rtx, rtx, rtx, rtx, int, int));
-static void block_move_sequence PARAMS ((rtx, rtx, rtx, rtx, int, int, int));
-static void output_short_branch_defs PARAMS ((FILE *));
-static int output_option PARAMS ((FILE *, const char *, const char *,
- const char *, const char *, int, int));
-
-/* Emit code to perform a block move. Choose the best method.
-
- OPERANDS[0] is the destination.
- OPERANDS[1] is the source.
- OPERANDS[2] is the size.
- OPERANDS[3] is the alignment safe to use. */
-
-void
-expand_block_move (dest_mem, src_mem, operands)
- rtx dest_mem;
- rtx src_mem;
- rtx *operands;
-{
- int align = INTVAL (operands[3]);
- int constp = (GET_CODE (operands[2]) == CONST_INT);
- int bytes = (constp ? INTVAL (operands[2]) : 0);
- int target = (int) m88k_cpu;
-
- if (! (PROCESSOR_M88100 == 0
- && PROCESSOR_M88110 == 1
- && PROCESSOR_M88000 == 2))
- abort ();
-
- if (constp && bytes <= 0)
- return;
-
- /* Determine machine mode to do move with. */
- if (align > 4 && !TARGET_88110)
- align = 4;
- else if (align <= 0 || align == 3)
- abort (); /* block move invalid alignment. */
-
- if (constp && bytes <= 3 * align)
- block_move_sequence (operands[0], dest_mem, operands[1], src_mem,
- bytes, align, 0);
-
- else if (constp && bytes <= best_from_align[target][align])
- block_move_no_loop (operands[0], dest_mem, operands[1], src_mem,
- bytes, align);
-
- else if (constp && align == 4 && TARGET_88100)
- block_move_loop (operands[0], dest_mem, operands[1], src_mem,
- bytes, align);
-
- else
- {
-#ifdef TARGET_MEM_FUNCTIONS
- emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "memcpy"), 0,
- VOIDmode, 3,
- operands[0], Pmode,
- operands[1], Pmode,
- convert_to_mode (TYPE_MODE (sizetype), operands[2],
- TREE_UNSIGNED (sizetype)),
- TYPE_MODE (sizetype));
-#else
- emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "bcopy"), 0,
- VOIDmode, 3,
- operands[1], Pmode,
- operands[0], Pmode,
- convert_to_mode (TYPE_MODE (integer_type_node),
- operands[2],
- TREE_UNSIGNED (integer_type_node)),
- TYPE_MODE (integer_type_node));
-#endif
- }
-}
-
-/* Emit code to perform a block move by calling a looping movstr library
- function. SIZE and ALIGN are known constants. DEST and SRC are
- registers. */
-
-static void
-block_move_loop (dest, dest_mem, src, src_mem, size, align)
- rtx dest, dest_mem;
- rtx src, src_mem;
- int size;
- int align;
-{
- enum machine_mode mode;
- int count;
- int units;
- int remainder;
- rtx offset_rtx;
- rtx value_rtx;
- char entry[30];
- tree entry_name;
-
- /* Determine machine mode to do move with. */
- if (align != 4)
- abort ();
-
- /* Determine the structure of the loop. */
- count = size / MOVSTR_LOOP;
- units = (size - count * MOVSTR_LOOP) / align;
-
- if (units < 2)
- {
- count--;
- units += MOVSTR_LOOP / align;
- }
-
- if (count <= 0)
- {
- block_move_no_loop (dest, dest_mem, src, src_mem, size, align);
- return;
- }
-
- remainder = size - count * MOVSTR_LOOP - units * align;
-
- mode = mode_from_align[align];
- sprintf (entry, "__movstr%s%dn%d",
- GET_MODE_NAME (mode), MOVSTR_LOOP, units * align);
- entry_name = get_identifier (entry);
-
- offset_rtx = GEN_INT (MOVSTR_LOOP + (1 - units) * align);
-
- value_rtx = gen_rtx_MEM (MEM_IN_STRUCT_P (src_mem) ? mode : BLKmode,
- gen_rtx_PLUS (Pmode,
- gen_rtx_REG (Pmode, 3),
- offset_rtx));
- MEM_COPY_ATTRIBUTES (value_rtx, src_mem);
-
- emit_insn (gen_call_movstrsi_loop
- (gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (entry_name)),
- dest, src, offset_rtx, value_rtx,
- gen_rtx_REG (mode, ((units & 1) ? 4 : 5)),
- GEN_INT (count)));
-
- if (remainder)
- block_move_sequence (gen_rtx_REG (Pmode, 2), dest_mem,
- gen_rtx_REG (Pmode, 3), src_mem,
- remainder, align, MOVSTR_LOOP + align);
-}
-
-/* Emit code to perform a block move by calling a non-looping library
- function. SIZE and ALIGN are known constants. DEST and SRC are
- registers. OFFSET is the known starting point for the output pattern. */
-
-static void
-block_move_no_loop (dest, dest_mem, src, src_mem, size, align)
- rtx dest, dest_mem;
- rtx src, src_mem;
- int size;
- int align;
-{
- enum machine_mode mode = mode_from_align[align];
- int units = size / align;
- int remainder = size - units * align;
- int most;
- int value_reg;
- rtx offset_rtx;
- rtx value_rtx;
- char entry[30];
- tree entry_name;
-
- if (remainder && size <= all_from_align[align])
- {
- most = all_from_align[align] - (align - remainder);
- remainder = 0;
- }
- else
- {
- most = max_from_align[align];
- }
-
- sprintf (entry, "__movstr%s%dx%d",
- GET_MODE_NAME (mode), most, size - remainder);
- entry_name = get_identifier (entry);
-
- offset_rtx = GEN_INT (most - (size - remainder));
-
- value_rtx = gen_rtx_MEM (MEM_IN_STRUCT_P (src_mem) ? mode : BLKmode,
- gen_rtx_PLUS (Pmode,
- gen_rtx_REG (Pmode, 3),
- offset_rtx));
-
- MEM_COPY_ATTRIBUTES (value_rtx, src_mem);
-
- value_reg = ((((most - (size - remainder)) / align) & 1) == 0
- ? (align == 8 ? 6 : 5) : 4);
-
- emit_insn (gen_call_block_move
- (gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (entry_name)),
- dest, src, offset_rtx, value_rtx,
- gen_rtx_REG (mode, value_reg)));
-
- if (remainder)
- block_move_sequence (gen_rtx_REG (Pmode, 2), dest_mem,
- gen_rtx_REG (Pmode, 3), src_mem,
- remainder, align, most);
-}
-
-/* Emit code to perform a block move with an offset sequence of ld/st
- instructions (..., ld 0, st 1, ld 1, st 0, ...). SIZE and ALIGN are
- known constants. DEST and SRC are registers. OFFSET is the known
- starting point for the output pattern. */
-
-static void
-block_move_sequence (dest, dest_mem, src, src_mem, size, align, offset)
- rtx dest, dest_mem;
- rtx src, src_mem;
- int size;
- int align;
- int offset;
-{
- rtx temp[2];
- enum machine_mode mode[2];
- int amount[2];
- int active[2];
- int phase = 0;
- int next;
- int offset_ld = offset;
- int offset_st = offset;
-
- active[0] = active[1] = FALSE;
-
- /* Establish parameters for the first load and for the second load if
- it is known to be the same mode as the first. */
- amount[0] = amount[1] = align;
- mode[0] = mode_from_align[align];
- temp[0] = gen_reg_rtx (mode[0]);
- if (size >= 2 * align)
- {
- mode[1] = mode[0];
- temp[1] = gen_reg_rtx (mode[1]);
- }
-
- do
- {
- rtx srcp, dstp;
- next = phase;
- phase = !phase;
-
- if (size > 0)
- {
- /* Change modes as the sequence tails off. */
- if (size < amount[next])
- {
- amount[next] = (size >= 4 ? 4 : (size >= 2 ? 2 : 1));
- mode[next] = mode_from_align[amount[next]];
- temp[next] = gen_reg_rtx (mode[next]);
- }
- size -= amount[next];
- srcp = gen_rtx_MEM (MEM_IN_STRUCT_P (src_mem) ? mode[next] : BLKmode,
- plus_constant (src, offset_ld));
-
- MEM_COPY_ATTRIBUTES (srcp, src_mem);
- emit_insn (gen_rtx_SET (VOIDmode, temp[next], srcp));
- offset_ld += amount[next];
- active[next] = TRUE;
- }
-
- if (active[phase])
- {
- active[phase] = FALSE;
- dstp
- = gen_rtx_MEM (MEM_IN_STRUCT_P (dest_mem) ? mode[phase] : BLKmode,
- plus_constant (dest, offset_st));
-
- MEM_COPY_ATTRIBUTES (dstp, dest_mem);
- emit_insn (gen_rtx_SET (VOIDmode, dstp, temp[phase]));
- offset_st += amount[phase];
- }
- }
- while (active[next]);
-}
-\f
-/* Emit the code to do an AND operation. */
-
-const char *
-output_and (operands)
- rtx operands[];
-{
- unsigned int value;
-
- if (REG_P (operands[2]))
- return "and %0,%1,%2";
-
- value = INTVAL (operands[2]);
- if (SMALL_INTVAL (value))
- return "mask %0,%1,%2";
- else if ((value & 0xffff0000) == 0xffff0000)
- return "and %0,%1,%x2";
- else if ((value & 0xffff) == 0xffff)
- return "and.u %0,%1,%X2";
- else if ((value & 0xffff) == 0)
- return "mask.u %0,%1,%X2";
- else if (integer_ok_for_set (~value))
- return "clr %0,%1,%S2";
- else
- return "and.u %0,%1,%X2\n\tand %0,%0,%x2";
-}
-
-/* Emit the code to do an inclusive OR operation. */
-
-const char *
-output_ior (operands)
- rtx operands[];
-{
- unsigned int value;
-
- if (REG_P (operands[2]))
- return "or %0,%1,%2";
-
- value = INTVAL (operands[2]);
- if (SMALL_INTVAL (value))
- return "or %0,%1,%2";
- else if ((value & 0xffff) == 0)
- return "or.u %0,%1,%X2";
- else if (integer_ok_for_set (value))
- return "set %0,%1,%s2";
- else
- return "or.u %0,%1,%X2\n\tor %0,%0,%x2";
-}
-
-/* Emit the instructions for doing an XOR. */
-
-const char *
-output_xor (operands)
- rtx operands[];
-{
- unsigned int value;
-
- if (REG_P (operands[2]))
- return "xor %0,%1,%2";
-
- value = INTVAL (operands[2]);
- if (SMALL_INTVAL (value))
- return "xor %0,%1,%2";
- else if ((value & 0xffff) == 0)
- return "xor.u %0,%1,%X2";
- else
- return "xor.u %0,%1,%X2\n\txor %0,%0,%x2";
-}
-\f
-/* Output a call. Normally this is just bsr or jsr, but this also deals with
- accomplishing a branch after the call by incrementing r1. This requires
- that various assembler bugs be accommodated. The 4.30 DG/UX assembler
- requires that forward references not occur when computing the difference of
- two labels. The [version?] Motorola assembler computes a word difference.
- No doubt there's more to come!
-
- It would seem the same idea could be used to tail call, but in this case,
- the epilogue will be non-null. */
-
-static rtx sb_name = 0;
-static rtx sb_high = 0;
-static rtx sb_low = 0;
-
-const char *
-output_call (operands, addr)
- rtx operands[];
- rtx addr;
-{
- operands[0] = addr;
- if (final_sequence)
- {
- rtx jump;
- rtx seq_insn;
-
- /* This can be generalized, but there is currently no need. */
- if (XVECLEN (final_sequence, 0) != 2)
- abort ();
-
- /* The address of interior insns is not computed, so use the sequence. */
- seq_insn = NEXT_INSN (PREV_INSN (XVECEXP (final_sequence, 0, 0)));
- jump = XVECEXP (final_sequence, 0, 1);
- if (GET_CODE (jump) == JUMP_INSN)
- {
- rtx low, high;
- const char *last;
- rtx dest = XEXP (SET_SRC (PATTERN (jump)), 0);
- int delta = 4 * (INSN_ADDRESSES (INSN_UID (dest))
- - INSN_ADDRESSES (INSN_UID (seq_insn))
- - 2);
-#if (MONITOR_GCC & 0x2) /* How often do long branches happen? */
- if ((unsigned) (delta + 0x8000) >= 0x10000)
- warning ("internal gcc monitor: short-branch(%x)", delta);
-#endif
-
- /* Delete the jump. */
- PUT_CODE (jump, NOTE);
- NOTE_LINE_NUMBER (jump) = NOTE_INSN_DELETED;
- NOTE_SOURCE_FILE (jump) = 0;
-
- /* We only do this optimization if -O2, modifying the value of
- r1 in the delay slot confuses debuggers and profilers on some
- systems.
-
- If we loose, we must use the non-delay form. This is unlikely
- to ever happen. If it becomes a problem, claim that a call
- has two delay slots and only the second can be filled with
- a jump.
-
- The 88110 can lose when a jsr.n r1 is issued and a page fault
- occurs accessing the delay slot. So don't use jsr.n form when
- jumping thru r1.
- */
-#ifdef AS_BUG_IMMEDIATE_LABEL /* The assembler restricts immediate values. */
- if (optimize < 2
- || ! ADD_INTVAL (delta * 2)
-#else
- if (optimize < 2
- || ! ADD_INTVAL (delta)
-#endif
- || (REG_P (addr) && REGNO (addr) == 1))
- {
- operands[1] = dest;
- return (REG_P (addr)
- ? "jsr %0\n\tbr %l1"
- : (flag_pic
- ? "bsr %0#plt\n\tbr %l1"
- : "bsr %0\n\tbr %l1"));
- }
-
- /* Output the short branch form. */
- output_asm_insn ((REG_P (addr)
- ? "jsr.n %0"
- : (flag_pic ? "bsr.n %0#plt" : "bsr.n %0")),
- operands);
-
-#ifdef USE_GAS
- last = (delta < 0
- ? "subu %#r1,%#r1,.-%l0+4"
- : "addu %#r1,%#r1,%l0-.-4");
- operands[0] = dest;
-#else
- operands[0] = gen_label_rtx ();
- operands[1] = gen_label_rtx ();
- if (delta < 0)
- {
- low = dest;
- high = operands[1];
- last = "subu %#r1,%#r1,%l0\n%l1:";
- }
- else
- {
- low = operands[1];
- high = dest;
- last = "addu %#r1,%#r1,%l0\n%l1:";
- }
-
- /* Record the values to be computed later as "def name,high-low". */
- sb_name = gen_rtx_EXPR_LIST (VOIDmode, operands[0], sb_name);
- sb_high = gen_rtx_EXPR_LIST (VOIDmode, high, sb_high);
- sb_low = gen_rtx_EXPR_LIST (VOIDmode, low, sb_low);
-#endif /* Don't USE_GAS */
-
- return last;
- }
- }
- return (REG_P (addr)
- ? "jsr%. %0"
- : (flag_pic ? "bsr%. %0#plt" : "bsr%. %0"));
-}
-
-static void
-output_short_branch_defs (stream)
- FILE *stream;
-{
- char name[256], high[256], low[256];
-
- for (; sb_name && sb_high && sb_low;
- sb_name = XEXP (sb_name, 1),
- sb_high = XEXP (sb_high, 1),
- sb_low = XEXP (sb_low, 1))
- {
- ASM_GENERATE_INTERNAL_LABEL
- (name, "L", CODE_LABEL_NUMBER (XEXP (sb_name, 0)));
- ASM_GENERATE_INTERNAL_LABEL
- (high, "L", CODE_LABEL_NUMBER (XEXP (sb_high, 0)));
- ASM_GENERATE_INTERNAL_LABEL
- (low, "L", CODE_LABEL_NUMBER (XEXP (sb_low, 0)));
- /* This will change as the assembler requirements become known. */
- fprintf (stream, "%s%s,%s-%s\n",
- SET_ASM_OP, &name[1], &high[1], &low[1]);
- }
- if (sb_name || sb_high || sb_low)
- abort ();
-}
-\f
-/* Return truth value of the statement that this conditional branch is likely
- to fall through. CONDITION, is the condition that JUMP_INSN is testing. */
-
-int
-mostly_false_jump (jump_insn, condition)
- rtx jump_insn, condition;
-{
- rtx target_label = JUMP_LABEL (jump_insn);
- rtx insnt, insnj;
-
- /* Much of this isn't computed unless we're optimizing. */
- if (optimize == 0)
- return 0;
-
- /* Determine if one path or the other leads to a return. */
- for (insnt = NEXT_INSN (target_label);
- insnt;
- insnt = NEXT_INSN (insnt))
- {
- if (GET_CODE (insnt) == JUMP_INSN)
- break;
- else if (GET_CODE (insnt) == INSN
- && GET_CODE (PATTERN (insnt)) == SEQUENCE
- && GET_CODE (XVECEXP (PATTERN (insnt), 0, 0)) == JUMP_INSN)
- {
- insnt = XVECEXP (PATTERN (insnt), 0, 0);
- break;
- }
- }
- if (insnt
- && (GET_CODE (PATTERN (insnt)) == RETURN
- || (GET_CODE (PATTERN (insnt)) == SET
- && GET_CODE (SET_SRC (PATTERN (insnt))) == REG
- && REGNO (SET_SRC (PATTERN (insnt))) == 1)))
- insnt = 0;
-
- for (insnj = NEXT_INSN (jump_insn);
- insnj;
- insnj = NEXT_INSN (insnj))
- {
- if (GET_CODE (insnj) == JUMP_INSN)
- break;
- else if (GET_CODE (insnj) == INSN
- && GET_CODE (PATTERN (insnj)) == SEQUENCE
- && GET_CODE (XVECEXP (PATTERN (insnj), 0, 0)) == JUMP_INSN)
- {
- insnj = XVECEXP (PATTERN (insnj), 0, 0);
- break;
- }
- }
- if (insnj
- && (GET_CODE (PATTERN (insnj)) == RETURN
- || (GET_CODE (PATTERN (insnj)) == SET
- && GET_CODE (SET_SRC (PATTERN (insnj))) == REG
- && REGNO (SET_SRC (PATTERN (insnj))) == 1)))
- insnj = 0;
-
- /* Predict to not return. */
- if ((insnt == 0) != (insnj == 0))
- return (insnt == 0);
-
- /* Predict loops to loop. */
- for (insnt = PREV_INSN (target_label);
- insnt && GET_CODE (insnt) == NOTE;
- insnt = PREV_INSN (insnt))
- if (NOTE_LINE_NUMBER (insnt) == NOTE_INSN_LOOP_END)
- return 1;
- else if (NOTE_LINE_NUMBER (insnt) == NOTE_INSN_LOOP_BEG)
- return 0;
- else if (NOTE_LINE_NUMBER (insnt) == NOTE_INSN_LOOP_CONT)
- return 0;
-
- /* Predict backward branches usually take. */
- if (final_sequence)
- insnj = NEXT_INSN (PREV_INSN (XVECEXP (final_sequence, 0, 0)));
- else
- insnj = jump_insn;
- if (INSN_ADDRESSES (INSN_UID (insnj))
- > INSN_ADDRESSES (INSN_UID (target_label)))
- return 0;
-
- /* EQ tests are usually false and NE tests are usually true. Also,
- most quantities are positive, so we can make the appropriate guesses
- about signed comparisons against zero. Consider unsigned comparisons
- to be a range check and assume quantities to be in range. */
- switch (GET_CODE (condition))
- {
- case CONST_INT:
- /* Unconditional branch. */
- return 0;
- case EQ:
- return 1;
- case NE:
- return 0;
- case LE:
- case LT:
- case GEU:
- case GTU: /* Must get casesi right at least. */
- if (XEXP (condition, 1) == const0_rtx)
- return 1;
- break;
- case GE:
- case GT:
- case LEU:
- case LTU:
- if (XEXP (condition, 1) == const0_rtx)
- return 0;
- break;
- default:
- break;
- }
-
- return 0;
-}
-\f
-/* Return true if the operand is a power of two and is a floating
- point type (to optimize division by power of two into multiplication). */
-
-int
-real_power_of_2_operand (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- union {
- REAL_VALUE_TYPE d;
- int i[sizeof (REAL_VALUE_TYPE) / sizeof (int)];
- struct { /* IEEE double precision format */
- unsigned sign : 1;
- unsigned exponent : 11;
- unsigned mantissa1 : 20;
- unsigned mantissa2;
- } s;
- struct { /* IEEE double format to quick check */
- unsigned sign : 1; /* if it fits in a float */
- unsigned exponent1 : 4;
- unsigned exponent2 : 7;
- unsigned mantissa1 : 20;
- unsigned mantissa2;
- } s2;
- } u;
-
- if (GET_MODE (op) != DFmode && GET_MODE (op) != SFmode)
- return 0;
-
- if (GET_CODE (op) != CONST_DOUBLE)
- return 0;
-
- u.i[0] = CONST_DOUBLE_LOW (op);
- u.i[1] = CONST_DOUBLE_HIGH (op);
-
- if (u.s.mantissa1 != 0 || u.s.mantissa2 != 0 /* not a power of two */
- || u.s.exponent == 0 /* constant 0.0 */
- || u.s.exponent == 0x7ff /* NAN */
- || (u.s2.exponent1 != 0x8 && u.s2.exponent1 != 0x7))
- return 0; /* const won't fit in float */
-
- return 1;
-}
-\f
-/* Make OP legitimate for mode MODE. Currently this only deals with DFmode
- operands, putting them in registers and making CONST_DOUBLE values
- SFmode where possible. */
-
-struct rtx_def *
-legitimize_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- rtx temp;
- union {
- union real_extract r;
- struct { /* IEEE double precision format */
- unsigned sign : 1;
- unsigned exponent : 11;
- unsigned mantissa1 : 20;
- unsigned mantissa2;
- } d;
- struct { /* IEEE double format to quick check */
- unsigned sign : 1; /* if it fits in a float */
- unsigned exponent1 : 4;
- unsigned exponent2 : 7;
- unsigned mantissa1 : 20;
- unsigned mantissa2;
- } s;
- } u;
-
- if (GET_CODE (op) == REG || mode != DFmode)
- return op;
-
- if (GET_CODE (op) == CONST_DOUBLE)
- {
- memcpy (&u.r, &CONST_DOUBLE_LOW (op), sizeof u);
- if (u.d.exponent != 0x7ff /* NaN */
- && u.d.mantissa2 == 0 /* Mantissa fits */
- && (u.s.exponent1 == 0x8 || u.s.exponent1 == 0x7) /* Exponent fits */
- && (temp = simplify_unary_operation (FLOAT_TRUNCATE, SFmode,
- op, mode)) != 0)
- return gen_rtx_FLOAT_EXTEND (mode, force_reg (SFmode, temp));
- }
- else if (register_operand (op, mode))
- return op;
-
- return force_reg (mode, op);
-}
-\f
-/* Return true if OP is a suitable input for a move insn. */
-
-int
-move_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- if (register_operand (op, mode))
- return 1;
- if (GET_CODE (op) == CONST_INT)
- return (classify_integer (mode, INTVAL (op)) < m88k_oru_hi16);
- if (GET_MODE (op) != mode)
- return 0;
- if (GET_CODE (op) == SUBREG)
- op = SUBREG_REG (op);
- if (GET_CODE (op) != MEM)
- return 0;
-
- op = XEXP (op, 0);
- if (GET_CODE (op) == LO_SUM)
- return (REG_P (XEXP (op, 0))
- && symbolic_address_p (XEXP (op, 1)));
- return memory_address_p (mode, op);
-}
-
-/* Return true if OP is suitable for a call insn. */
-
-int
-call_address_operand (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return (REG_P (op) || symbolic_address_p (op));
-}
-
-/* Returns true if OP is either a symbol reference or a sum of a symbol
- reference and a constant. */
-
-int
-symbolic_address_p (op)
- register rtx op;
-{
- switch (GET_CODE (op))
- {
- case SYMBOL_REF:
- case LABEL_REF:
- return 1;
-
- case CONST:
- op = XEXP (op, 0);
- return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
- || GET_CODE (XEXP (op, 0)) == LABEL_REF)
- && GET_CODE (XEXP (op, 1)) == CONST_INT);
-
- default:
- return 0;
- }
-}
-
-/* Return true if OP is a register or const0_rtx. */
-
-int
-reg_or_0_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (op == const0_rtx || register_operand (op, mode));
-}
-
-/* Nonzero if OP is a valid second operand for an arithmetic insn. */
-
-int
-arith_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (register_operand (op, mode)
- || (GET_CODE (op) == CONST_INT && SMALL_INT (op)));
-}
-
-/* Return true if OP is a register or 5 bit integer. */
-
-int
-arith5_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (register_operand (op, mode)
- || (GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 32));
-}
-
-int
-arith32_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (register_operand (op, mode) || GET_CODE (op) == CONST_INT);
-}
-
-int
-arith64_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (register_operand (op, mode)
- || GET_CODE (op) == CONST_INT
- || (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == VOIDmode));
-}
-
-int
-int5_operand (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return (GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 32);
-}
-
-int
-int32_operand (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return (GET_CODE (op) == CONST_INT);
-}
-
-/* Return true if OP is a register or a valid immediate operand for
- addu or subu. */
-
-int
-add_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- return (register_operand (op, mode)
- || (GET_CODE (op) == CONST_INT && ADD_INT (op)));
-}
-
-/* Nonzero if this is a bitmask filling the bottom bits, for optimizing and +
- shift left combinations into a single mak instruction. */
-
-int
-mak_mask_p (value)
- int value;
-{
- return (value && POWER_OF_2_or_0 (value + 1));
-}
-
-int
-reg_or_bbx_mask_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- int value;
- if (register_operand (op, mode))
- return 1;
- if (GET_CODE (op) != CONST_INT)
- return 0;
-
- value = INTVAL (op);
- if (POWER_OF_2 (value))
- return 1;
-
- return 0;
-}
-
-/* Return true if OP is valid to use in the context of a floating
- point operation. Special case 0.0, since we can use r0. */
-
-int
-real_or_0_operand (op, mode)
- rtx op;
- enum machine_mode mode;
-{
- if (mode != SFmode && mode != DFmode)
- return 0;
-
- return (register_operand (op, mode)
- || (GET_CODE (op) == CONST_DOUBLE
- && op == CONST0_RTX (mode)));
-}
-
-/* Return true if OP is valid to use in the context of logic arithmetic
- on condition codes. */
-
-int
-partial_ccmode_register_operand (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return register_operand (op, CCmode) || register_operand (op, CCEVENmode);
-}
-
-/* Return true if OP is a relational operator. */
-
-int
-relop (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- switch (GET_CODE (op))
- {
- case EQ:
- case NE:
- case LT:
- case LE:
- case GE:
- case GT:
- case LTU:
- case LEU:
- case GEU:
- case GTU:
- return 1;
- default:
- return 0;
- }
-}
-
-int
-even_relop (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- switch (GET_CODE (op))
- {
- case EQ:
- case LT:
- case GT:
- case LTU:
- case GTU:
- return 1;
- default:
- return 0;
- }
-}
-
-int
-odd_relop (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- switch (GET_CODE (op))
- {
- case NE:
- case LE:
- case GE:
- case LEU:
- case GEU:
- return 1;
- default:
- return 0;
- }
-}
-
-/* Return true if OP is a relational operator, and is not an unsigned
- relational operator. */
-
-int
-relop_no_unsigned (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- switch (GET_CODE (op))
- {
- case EQ:
- case NE:
- case LT:
- case LE:
- case GE:
- case GT:
- /* @@ What is this test doing? Why not use `mode'? */
- if (GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT
- || GET_MODE (op) == DImode
- || GET_MODE_CLASS (GET_MODE (XEXP (op, 0))) == MODE_FLOAT
- || GET_MODE (XEXP (op, 0)) == DImode
- || GET_MODE_CLASS (GET_MODE (XEXP (op, 1))) == MODE_FLOAT
- || GET_MODE (XEXP (op, 1)) == DImode)
- return 0;
- return 1;
- default:
- return 0;
- }
-}
-
-/* Return true if the code of this rtx pattern is EQ or NE. */
-
-int
-equality_op (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return (GET_CODE (op) == EQ || GET_CODE (op) == NE);
-}
-
-/* Return true if the code of this rtx pattern is pc or label_ref. */
-
-int
-pc_or_label_ref (op, mode)
- rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- return (GET_CODE (op) == PC || GET_CODE (op) == LABEL_REF);
-}
-\f
-/* Output to FILE the start of the assembler file. */
-
-/* This definition must match lang_independent_options from toplev.c. */
-struct m88k_lang_independent_options
-{
- const char *const string;
- int *const variable;
- const int on_value;
- const char *const description;
-};
-
-static void output_options PARAMS ((FILE *,
- const struct m88k_lang_independent_options *,
- int,
- const struct m88k_lang_independent_options *,
- int, int, int, const char *, const char *,
- const char *));
-
-static int
-output_option (file, sep, type, name, indent, pos, max)
- FILE *file;
- const char *sep;
- const char *type;
- const char *name;
- const char *indent;
- int pos;
- int max;
-{
- if ((long)(strlen (sep) + strlen (type) + strlen (name) + pos) > max)
- {
- fprintf (file, indent);
- return fprintf (file, "%s%s", type, name);
- }
- return pos + fprintf (file, "%s%s%s", sep, type, name);
-}
-
-static const struct { const char *const name; const int value; } m_options[] =
-TARGET_SWITCHES;
-
-static void
-output_options (file, f_options, f_len, W_options, W_len,
- pos, max, sep, indent, term)
- FILE *file;
- const struct m88k_lang_independent_options *f_options;
- const struct m88k_lang_independent_options *W_options;
- int f_len, W_len;
- int pos;
- int max;
- const char *sep;
- const char *indent;
- const char *term;
-{
- register int j;
-
- if (optimize)
- pos = output_option (file, sep, "-O", "", indent, pos, max);
- if (write_symbols != NO_DEBUG)
- pos = output_option (file, sep, "-g", "", indent, pos, max);
- if (flag_traditional)
- pos = output_option (file, sep, "-traditional", "", indent, pos, max);
- if (profile_flag)
- pos = output_option (file, sep, "-p", "", indent, pos, max);
- for (j = 0; j < f_len; j++)
- if (*f_options[j].variable == f_options[j].on_value)
- pos = output_option (file, sep, "-f", f_options[j].string,
- indent, pos, max);
-
- for (j = 0; j < W_len; j++)
- if (*W_options[j].variable == W_options[j].on_value)
- pos = output_option (file, sep, "-W", W_options[j].string,
- indent, pos, max);
-
- for (j = 0; j < (long) ARRAY_SIZE (m_options); j++)
- if (m_options[j].name[0] != '\0'
- && m_options[j].value > 0
- && ((m_options[j].value & target_flags)
- == m_options[j].value))
- pos = output_option (file, sep, "-m", m_options[j].name,
- indent, pos, max);
-
- if (m88k_short_data)
- pos = output_option (file, sep, "-mshort-data-", m88k_short_data,
- indent, pos, max);
-
- fprintf (file, term);
-}
-
-void
-output_file_start (file, f_options, f_len, W_options, W_len)
- FILE *file;
- const struct m88k_lang_independent_options *f_options;
- const struct m88k_lang_independent_options *W_options;
- int f_len, W_len;
-{
- register int pos;
-
- ASM_FIRST_LINE (file);
- if (TARGET_88110
- && TARGET_SVR4)
- fprintf (file, "%s\n", REQUIRES_88110_ASM_OP);
- output_file_directive (file, main_input_filename);
- /* Switch to the data section so that the coffsem symbol
- isn't in the text section. */
- ASM_COFFSEM (file);
-
- if (TARGET_IDENTIFY_REVISION)
- {
- char indent[256];
-
- time_t now = time ((time_t *)0);
- sprintf (indent, "]\"\n%s\"@(#)%s [", IDENT_ASM_OP, main_input_filename);
- fprintf (file, indent+3);
- pos = fprintf (file, "gcc %s, %.24s,", version_string, ctime (&now));
-#if 1
- /* ??? It would be nice to call print_switch_values here (and thereby
- let us delete output_options) but this is kept in until it is known
- whether the change in content format matters. */
- output_options (file, f_options, f_len, W_options, W_len,
- pos, 150 - strlen (indent), " ", indent, "]\"\n\n");
-#else
- fprintf (file, "]\"\n");
- print_switch_values (file, 0, 150 - strlen (indent),
- indent + 3, " ", "]\"\n");
-#endif
- }
-}
-\f
-/* Output an ascii string. */
-
-void
-output_ascii (file, opcode, max, p, size)
- FILE *file;
- const char *opcode;
- int max;
- const char *p;
- int size;
-{
- int i;
- int in_escape = 0;
-
- register int num = 0;
-
- fprintf (file, "%s\"", opcode);
- for (i = 0; i < size; i++)
- {
- register int c = (unsigned char) p[i];
-
- if (num > max)
- {
- fprintf (file, "\"\n%s\"", opcode);
- num = 0;
- }
-
- if (c == '\"' || c == '\\')
- {
- escape:
- putc ('\\', file);
- putc (c, file);
- num += 2;
- in_escape = 0;
- }
- else if (in_escape && ISDIGIT (c))
- {
- /* If a digit follows an octal-escape, the VAX assembler fails
- to stop reading the escape after three digits. Continue to
- output the values as an octal-escape until a non-digit is
- found. */
- fprintf (file, "\\%03o", c);
- num += 4;
- }
- else if ((c >= ' ' && c < 0177) || (c == '\t'))
- {
- putc (c, file);
- num++;
- in_escape = 0;
- }
- else
- {
- switch (c)
- {
- /* Some assemblers can't handle \a, \v, or \?. */
- case '\f': c = 'f'; goto escape;
- case '\b': c = 'b'; goto escape;
- case '\r': c = 'r'; goto escape;
- case '\n': c = 'n'; goto escape;
- }
-
- fprintf (file, "\\%03o", c);
- num += 4;
- in_escape = 1;
- }
- }
- fprintf (file, "\"\n");
-}
-\f
-/* Output a label (allows insn-output.c to be compiled without including
- m88k.c or needing to include stdio.h). */
-
-void
-output_label (label_number)
- int label_number;
-{
- ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "L", label_number);
-}
-\f
-/* Generate the assembly code for function entry.
-
- The prologue is responsible for setting up the stack frame,
- initializing the frame pointer register, saving registers that must be
- saved, and allocating SIZE additional bytes of storage for the
- local variables. SIZE is an integer. FILE is a stdio
- stream to which the assembler code should be output.
-
- The label for the beginning of the function need not be output by this
- macro. That has already been done when the macro is run.
-
- To determine which registers to save, the macro can refer to the array
- `regs_ever_live': element R is nonzero if hard register
- R is used anywhere within the function. This implies the
- function prologue should save register R, but not if it is one
- of the call-used registers.
-
- On machines where functions may or may not have frame-pointers, the
- function entry code must vary accordingly; it must set up the frame
- pointer if one is wanted, and not otherwise. To determine whether a
- frame pointer is in wanted, the macro can refer to the variable
- `frame_pointer_needed'. The variable's value will be 1 at run
- time in a function that needs a frame pointer.
-
- On machines where an argument may be passed partly in registers and
- partly in memory, this macro must examine the variable
- `current_function_pretend_args_size', and allocate that many bytes
- of uninitialized space on the stack just underneath the first argument
- arriving on the stack. (This may not be at the very end of the stack,
- if the calling sequence has pushed anything else since pushing the stack
- arguments. But usually, on such machines, nothing else has been pushed
- yet, because the function prologue itself does all the pushing.)
-
- If `ACCUMULATE_OUTGOING_ARGS' is defined, the variable
- `current_function_outgoing_args_size' contains the size in bytes
- required for the outgoing arguments. This macro must add that
- amount of uninitialized space to very bottom of the stack.
-
- The stack frame we use looks like this:
-
- caller callee
- |==============================================|
- | caller's frame |
- |==============================================|
- | [caller's outgoing memory arguments] |
- |==============================================|
- | caller's outgoing argument area (32 bytes) |
- sp -> |==============================================| <- ap
- | [local variable space] |
- |----------------------------------------------|
- | [return address (r1)] |
- |----------------------------------------------|
- | [previous frame pointer (r30)] |
- |==============================================| <- fp
- | [preserved registers (r25..r14)] |
- |----------------------------------------------|
- | [preserved registers (x29..x22)] |
- |==============================================|
- | [dynamically allocated space (alloca)] |
- |==============================================|
- | [callee's outgoing memory arguments] |
- |==============================================|
- | [callee's outgoing argument area (32 bytes)] |
- |==============================================| <- sp
-
- Notes:
-
- r1 and r30 must be saved if debugging.
-
- fp (if present) is located two words down from the local
- variable space.
- */
-
-static void emit_add PARAMS ((rtx, rtx, int));
-static void preserve_registers PARAMS ((int, int));
-static void emit_ldst PARAMS ((int, int, enum machine_mode, int));
-static void output_tdesc PARAMS ((FILE *, int));
-static int uses_arg_area_p PARAMS ((void));
-
-static int nregs;
-static int nxregs;
-static char save_regs[FIRST_PSEUDO_REGISTER];
-static int frame_laid_out;
-static int frame_size;
-static int variable_args_p;
-static int epilogue_marked;
-static int prologue_marked;
-
-#define FIRST_OCS_PRESERVE_REGISTER 14
-#define LAST_OCS_PRESERVE_REGISTER 30
-
-#define FIRST_OCS_EXTENDED_PRESERVE_REGISTER (32 + 22)
-#define LAST_OCS_EXTENDED_PRESERVE_REGISTER (32 + 31)
-
-#define STACK_UNIT_BOUNDARY (STACK_BOUNDARY / BITS_PER_UNIT)
-#define ROUND_CALL_BLOCK_SIZE(BYTES) \
- (((BYTES) + (STACK_UNIT_BOUNDARY - 1)) & ~(STACK_UNIT_BOUNDARY - 1))
-\f
-/* Establish the position of the FP relative to the SP. This is done
- either during output_function_prologue() or by
- INITIAL_ELIMINATION_OFFSET. */
-
-void
-m88k_layout_frame ()
-{
- int regno, sp_size;
-
- frame_laid_out++;
-
- memset ((char *) &save_regs[0], 0, sizeof (save_regs));
- sp_size = nregs = nxregs = 0;
- frame_size = get_frame_size ();
-
- /* Since profiling requires a call, make sure r1 is saved. */
- if (current_function_profile)
- save_regs[1] = 1;
-
- /* If we are producing debug information, store r1 and r30 where the
- debugger wants to find them (r30 at r30+0, r1 at r30+4). Space has
- already been reserved for r1/r30 in STARTING_FRAME_OFFSET. */
- if (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION)
- save_regs[1] = 1;
-
- /* If there is a call, alloca is used, __builtin_alloca is used, or
- a dynamic-sized object is defined, add the 8 additional words
- for the callee's argument area. The common denominator is that the
- FP is required. may_call_alloca only gets calls to alloca;
- current_function_calls_alloca gets alloca and __builtin_alloca. */
- if (regs_ever_live[1] || frame_pointer_needed)
- {
- save_regs[1] = 1;
- sp_size += REG_PARM_STACK_SPACE (0);
- }
-
- /* If we are producing PIC, save the addressing base register and r1. */
- if (flag_pic && current_function_uses_pic_offset_table)
- {
- save_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
- nregs++;
- }
-
- /* If a frame is requested, save the previous FP, and the return
- address (r1), so that a traceback can be done without using tdesc
- information. Otherwise, simply save the FP if it is used as
- a preserve register. */
- if (frame_pointer_needed)
- save_regs[FRAME_POINTER_REGNUM] = save_regs[1] = 1;
- else if (regs_ever_live[FRAME_POINTER_REGNUM])
- save_regs[FRAME_POINTER_REGNUM] = 1;
-
- /* Figure out which extended register(s) needs to be saved. */
- for (regno = FIRST_EXTENDED_REGISTER + 1; regno < FIRST_PSEUDO_REGISTER;
- regno++)
- if (regs_ever_live[regno] && ! call_used_regs[regno])
- {
- save_regs[regno] = 1;
- nxregs++;
- }
-
- /* Figure out which normal register(s) needs to be saved. */
- for (regno = 2; regno < FRAME_POINTER_REGNUM; regno++)
- if (regs_ever_live[regno] && ! call_used_regs[regno])
- {
- save_regs[regno] = 1;
- nregs++;
- }
-
- /* Achieve greatest use of double memory ops. Either we end up saving
- r30 or we use that slot to align the registers we do save. */
- if (nregs >= 2 && save_regs[1] && !save_regs[FRAME_POINTER_REGNUM])
- sp_size += 4;
-
- nregs += save_regs[1] + save_regs[FRAME_POINTER_REGNUM];
- /* if we need to align extended registers, add a word */
- if (nxregs > 0 && (nregs & 1) != 0)
- sp_size +=4;
- sp_size += 4 * nregs;
- sp_size += 8 * nxregs;
- sp_size += current_function_outgoing_args_size;
-
- /* The first two saved registers are placed above the new frame pointer
- if any. In the only case this matters, they are r1 and r30. */
- if (frame_pointer_needed || sp_size)
- m88k_fp_offset = ROUND_CALL_BLOCK_SIZE (sp_size - STARTING_FRAME_OFFSET);
- else
- m88k_fp_offset = -STARTING_FRAME_OFFSET;
- m88k_stack_size = m88k_fp_offset + STARTING_FRAME_OFFSET;
-
- /* First, combine m88k_stack_size and size. If m88k_stack_size is
- non-zero, align the frame size to 8 mod 16; otherwise align the
- frame size to 0 mod 16. (If stacks are 8 byte aligned, this ends
- up as a NOP. */
- {
- int need
- = ((m88k_stack_size ? STACK_UNIT_BOUNDARY - STARTING_FRAME_OFFSET : 0)
- - (frame_size % STACK_UNIT_BOUNDARY));
- if (need < 0)
- need += STACK_UNIT_BOUNDARY;
- m88k_stack_size
- = ROUND_CALL_BLOCK_SIZE (m88k_stack_size + frame_size + need
- + current_function_pretend_args_size);
- }
-}
-
-/* Return true if this function is known to have a null prologue. */
-
-int
-null_prologue ()
-{
- if (! reload_completed)
- return 0;
- if (! frame_laid_out)
- m88k_layout_frame ();
- return (! frame_pointer_needed
- && nregs == 0
- && nxregs == 0
- && m88k_stack_size == 0);
-}
-
-/* Determine if the current function has any references to the arg pointer.
- This is done indirectly by examining the DECL_ARGUMENTS' DECL_RTL.
- It is OK to return TRUE if there are no references, but FALSE must be
- correct. */
-
-static int
-uses_arg_area_p ()
-{
- register tree parm;
-
- if (current_function_decl == 0
- || current_function_varargs
- || variable_args_p)
- return 1;
-
- for (parm = DECL_ARGUMENTS (current_function_decl);
- parm;
- parm = TREE_CHAIN (parm))
- {
- if (DECL_RTL (parm) == 0
- || GET_CODE (DECL_RTL (parm)) == MEM)
- return 1;
-
- if (DECL_INCOMING_RTL (parm) == 0
- || GET_CODE (DECL_INCOMING_RTL (parm)) == MEM)
- return 1;
- }
- return 0;
-}
-\f
-static void
-m88k_output_function_prologue (stream, size)
- FILE *stream ATTRIBUTE_UNUSED;
- HOST_WIDE_INT size ATTRIBUTE_UNUSED;
-{
- if (TARGET_OMIT_LEAF_FRAME_POINTER && ! quiet_flag && leaf_function_p ())
- fprintf (stderr, "$");
-
- m88k_prologue_done = 1; /* it's ok now to put out ln directives */
-}
-
-static void
-m88k_output_function_end_prologue (stream)
- FILE *stream;
-{
- if (TARGET_OCS_DEBUG_INFO && !prologue_marked)
- {
- PUT_OCS_FUNCTION_START (stream);
- prologue_marked = 1;
-
- /* If we've already passed the start of the epilogue, say that
- it starts here. This marks the function as having a null body,
- but at a point where the return address is in a known location.
-
- Originally, I thought this couldn't happen, but the pic prologue
- for leaf functions ends with the instruction that restores the
- return address from the temporary register. If the temporary
- register is never used, that instruction can float all the way
- to the end of the function. */
- if (epilogue_marked)
- PUT_OCS_FUNCTION_END (stream);
- }
-}
-
-void
-m88k_expand_prologue ()
-{
- m88k_layout_frame ();
-
- if (TARGET_OPTIMIZE_ARG_AREA
- && m88k_stack_size
- && ! uses_arg_area_p ())
- {
- /* The incoming argument area is used for stack space if it is not
- used (or if -mno-optimize-arg-area is given). */
- if ((m88k_stack_size -= REG_PARM_STACK_SPACE (0)) < 0)
- m88k_stack_size = 0;
- }
-
- if (m88k_stack_size)
- emit_add (stack_pointer_rtx, stack_pointer_rtx, -m88k_stack_size);
-
- if (nregs || nxregs)
- preserve_registers (m88k_fp_offset + 4, 1);
-
- if (frame_pointer_needed)
- emit_add (frame_pointer_rtx, stack_pointer_rtx, m88k_fp_offset);
-
- if (flag_pic && save_regs[PIC_OFFSET_TABLE_REGNUM])
- {
- rtx return_reg = gen_rtx_REG (SImode, 1);
- rtx label = gen_label_rtx ();
- rtx temp_reg = NULL_RTX;
-
- if (! save_regs[1])
- {
- temp_reg = gen_rtx_REG (SImode, TEMP_REGNUM);
- emit_move_insn (temp_reg, return_reg);
- }
- emit_insn (gen_locate1 (pic_offset_table_rtx, label));
- emit_insn (gen_locate2 (pic_offset_table_rtx, label));
- emit_insn (gen_addsi3 (pic_offset_table_rtx,
- pic_offset_table_rtx, return_reg));
- if (! save_regs[1])
- emit_move_insn (return_reg, temp_reg);
- }
- if (current_function_profile)
- emit_insn (gen_blockage ());
-}
-\f
-/* This function generates the assembly code for function exit,
- on machines that need it.
-
- The function epilogue should not depend on the current stack pointer!
- It should use the frame pointer only, if there is a frame pointer.
- This is mandatory because of alloca; we also take advantage of it to
- omit stack adjustments before returning. */
-
-static void
-m88k_output_function_begin_epilogue (stream)
- FILE *stream;
-{
- if (TARGET_OCS_DEBUG_INFO && !epilogue_marked && prologue_marked)
- {
- PUT_OCS_FUNCTION_END (stream);
- }
- epilogue_marked = 1;
-}
-
-static void
-m88k_output_function_epilogue (stream, size)
- FILE *stream;
- HOST_WIDE_INT size ATTRIBUTE_UNUSED;
-{
- rtx insn = get_last_insn ();
-
- if (TARGET_OCS_DEBUG_INFO && !epilogue_marked)
- PUT_OCS_FUNCTION_END (stream);
-
- /* If the last insn isn't a BARRIER, we must write a return insn. This
- should only happen if the function has no prologue and no body. */
- if (GET_CODE (insn) == NOTE)
- insn = prev_nonnote_insn (insn);
- if (insn == 0 || GET_CODE (insn) != BARRIER)
- fprintf (stream, "\tjmp\t %s\n", reg_names[1]);
-
- /* If the last insn is a barrier, and the insn before that is a call,
- then add a nop instruction so that tdesc can walk the stack correctly
- even though there is no epilogue. (Otherwise, the label for the
- end of the tdesc region ends up at the start of the next function. */
- if (insn && GET_CODE (insn) == BARRIER)
- {
- insn = prev_nonnote_insn (insn);
- if (insn && GET_CODE (insn) == CALL_INSN)
- fprintf (stream, "\tor\t %s,%s,%s\n",reg_names[0],reg_names[0],reg_names[0]);
- }
-
- output_short_branch_defs (stream);
-
- fprintf (stream, "\n");
-
- if (TARGET_OCS_DEBUG_INFO)
- output_tdesc (stream, m88k_fp_offset + 4);
-
- m88k_function_number++;
- m88k_prologue_done = 0; /* don't put out ln directives */
- variable_args_p = 0; /* has variable args */
- frame_laid_out = 0;
- epilogue_marked = 0;
- prologue_marked = 0;
-}
-
-void
-m88k_expand_epilogue ()
-{
-#if (MONITOR_GCC & 0x4) /* What are interesting prologue/epilogue values? */
- fprintf (stream, "; size = %d, m88k_fp_offset = %d, m88k_stack_size = %d\n",
- size, m88k_fp_offset, m88k_stack_size);
-#endif
-
- if (frame_pointer_needed)
- emit_add (stack_pointer_rtx, frame_pointer_rtx, -m88k_fp_offset);
-
- if (nregs || nxregs)
- preserve_registers (m88k_fp_offset + 4, 0);
-
- if (m88k_stack_size)
- emit_add (stack_pointer_rtx, stack_pointer_rtx, m88k_stack_size);
-}
-\f
-/* Emit insns to set DSTREG to SRCREG + AMOUNT during the prologue or
- epilogue. */
-
-static void
-emit_add (dstreg, srcreg, amount)
- rtx dstreg;
- rtx srcreg;
- int amount;
-{
- rtx incr = GEN_INT (abs (amount));
-
- if (! ADD_INTVAL (amount))
- {
- rtx temp = gen_rtx_REG (SImode, TEMP_REGNUM);
- emit_move_insn (temp, incr);
- incr = temp;
- }
- emit_insn ((amount < 0 ? gen_subsi3 : gen_addsi3) (dstreg, srcreg, incr));
-}
-
-/* Save/restore the preserve registers. base is the highest offset from
- r31 at which a register is stored. store_p is true if stores are to
- be done; otherwise loads. */
-
-static void
-preserve_registers (base, store_p)
- int base;
- int store_p;
-{
- int regno, offset;
- struct mem_op {
- int regno;
- int nregs;
- int offset;
- } mem_op[FIRST_PSEUDO_REGISTER];
- struct mem_op *mo_ptr = mem_op;
-
- /* The 88open OCS mandates that preserved registers be stored in
- increasing order. For compatibility with current practice,
- the order is r1, r30, then the preserve registers. */
-
- offset = base;
- if (save_regs[1])
- {
- /* An extra word is given in this case to make best use of double
- memory ops. */
- if (nregs > 2 && !save_regs[FRAME_POINTER_REGNUM])
- offset -= 4;
- emit_ldst (store_p, 1, SImode, offset);
- offset -= 4;
- base = offset;
- }
-
- /* Walk the registers to save recording all single memory operations. */
- for (regno = FRAME_POINTER_REGNUM; regno > 1; regno--)
- if (save_regs[regno])
- {
- if ((offset & 7) != 4 || (regno & 1) != 1 || !save_regs[regno-1])
- {
- mo_ptr->nregs = 1;
- mo_ptr->regno = regno;
- mo_ptr->offset = offset;
- mo_ptr++;
- offset -= 4;
- }
- else
- {
- regno--;
- offset -= 2*4;
- }
- }
-
- /* Walk the registers to save recording all double memory operations.
- This avoids a delay in the epilogue (ld.d/ld). */
- offset = base;
- for (regno = FRAME_POINTER_REGNUM; regno > 1; regno--)
- if (save_regs[regno])
- {
- if ((offset & 7) != 4 || (regno & 1) != 1 || !save_regs[regno-1])
- {
- offset -= 4;
- }
- else
- {
- mo_ptr->nregs = 2;
- mo_ptr->regno = regno-1;
- mo_ptr->offset = offset-4;
- mo_ptr++;
- regno--;
- offset -= 2*4;
- }
- }
-
- /* Walk the extended registers to record all memory operations. */
- /* Be sure the offset is double word aligned. */
- offset = (offset - 1) & ~7;
- for (regno = FIRST_PSEUDO_REGISTER - 1; regno > FIRST_EXTENDED_REGISTER;
- regno--)
- if (save_regs[regno])
- {
- mo_ptr->nregs = 2;
- mo_ptr->regno = regno;
- mo_ptr->offset = offset;
- mo_ptr++;
- offset -= 2*4;
- }
-
- mo_ptr->regno = 0;
-
- /* Output the memory operations. */
- for (mo_ptr = mem_op; mo_ptr->regno; mo_ptr++)
- {
- if (mo_ptr->nregs)
- emit_ldst (store_p, mo_ptr->regno,
- (mo_ptr->nregs > 1 ? DImode : SImode),
- mo_ptr->offset);
- }
-}
-
-static void
-emit_ldst (store_p, regno, mode, offset)
- int store_p;
- int regno;
- enum machine_mode mode;
- int offset;
-{
- rtx reg = gen_rtx_REG (mode, regno);
- rtx mem;
-
- if (SMALL_INTVAL (offset))
- {
- mem = gen_rtx_MEM (mode, plus_constant (stack_pointer_rtx, offset));
- }
- else
- {
- /* offset is too large for immediate index must use register */
-
- rtx disp = GEN_INT (offset);
- rtx temp = gen_rtx_REG (SImode, TEMP_REGNUM);
- rtx regi = gen_rtx_PLUS (SImode, stack_pointer_rtx, temp);
-
- emit_move_insn (temp, disp);
- mem = gen_rtx_MEM (mode, regi);
- }
-
- if (store_p)
- emit_move_insn (mem, reg);
- else
- emit_move_insn (reg, mem);
-}
-
-/* Convert the address expression REG to a CFA offset. */
-
-int
-m88k_debugger_offset (reg, offset)
- register rtx reg;
- register int offset;
-{
- if (GET_CODE (reg) == PLUS)
- {
- offset = INTVAL (XEXP (reg, 1));
- reg = XEXP (reg, 0);
- }
-
- /* Put the offset in terms of the CFA (arg pointer). */
- if (reg == frame_pointer_rtx)
- offset += m88k_fp_offset - m88k_stack_size;
- else if (reg == stack_pointer_rtx)
- offset -= m88k_stack_size;
- else if (reg != arg_pointer_rtx)
- {
-#if (MONITOR_GCC & 0x10) /* Watch for suspicious symbolic locations. */
- if (! (GET_CODE (reg) == REG
- && REGNO (reg) >= FIRST_PSEUDO_REGISTER))
- warning ("internal gcc error: Can't express symbolic location");
-#endif
- return 0;
- }
-
- return offset;
-}
-
-/* Output the 88open OCS proscribed text description information.
- The information is:
- 0 8: zero
- 0 22: info-byte-length (16 or 20 bytes)
- 0 2: info-alignment (word 2)
- 1 32: info-protocol (version 1 or 2(pic))
- 2 32: starting-address (inclusive, not counting prologue)
- 3 32: ending-address (exclusive, not counting epilog)
- 4 8: info-variant (version 1 or 3(extended registers))
- 4 17: register-save-mask (from register 14 to 30)
- 4 1: zero
- 4 1: return-address-info-discriminant
- 4 5: frame-address-register
- 5 32: frame-address-offset
- 6 32: return-address-info
- 7 32: register-save-offset
- 8 16: extended-register-save-mask (x16 - x31)
- 8 16: extended-register-save-offset (WORDS from register-save-offset) */
-
-static void
-output_tdesc (file, offset)
- FILE *file;
- int offset;
-{
- int regno, i, j;
- long mask, return_address_info, register_save_offset;
- long xmask, xregister_save_offset;
- char buf[256];
-
- for (mask = 0, i = 0, regno = FIRST_OCS_PRESERVE_REGISTER;
- regno <= LAST_OCS_PRESERVE_REGISTER;
- regno++)
- {
- mask <<= 1;
- if (save_regs[regno])
- {
- mask |= 1;
- i++;
- }
- }
-
- for (xmask = 0, j = 0, regno = FIRST_OCS_EXTENDED_PRESERVE_REGISTER;
- regno <= LAST_OCS_EXTENDED_PRESERVE_REGISTER;
- regno++)
- {
- xmask <<= 1;
- if (save_regs[regno])
- {
- xmask |= 1;
- j++;
- }
- }
-
- if (save_regs[1])
- {
- if ((nxregs > 0 || nregs > 2) && !save_regs[FRAME_POINTER_REGNUM])
- offset -= 4;
- return_address_info = - m88k_stack_size + offset;
- register_save_offset = return_address_info - i*4;
- }
- else
- {
- return_address_info = 1;
- register_save_offset = - m88k_stack_size + offset + 4 - i*4;
- }
-
- xregister_save_offset = - (j * 2 + ((register_save_offset >> 2) & 1));
-
- tdesc_section ();
-
- /* 8:0,22:(20 or 16),2:2 */
- fprintf (file, "%s%d,%d", integer_asm_op (4, TRUE),
- (((xmask != 0) ? 20 : 16) << 2) | 2,
- flag_pic ? 2 : 1);
-
- ASM_GENERATE_INTERNAL_LABEL (buf, OCS_START_PREFIX, m88k_function_number);
- fprintf (file, ",%s%s", buf+1, flag_pic ? "#rel" : "");
- ASM_GENERATE_INTERNAL_LABEL (buf, OCS_END_PREFIX, m88k_function_number);
- fprintf (file, ",%s%s", buf+1, flag_pic ? "#rel" : "");
-
- fprintf (file, ",0x%x,0x%x,0x%lx,0x%lx",
- /* 8:1,17:0x%.3x,1:0,1:%d,5:%d */
- (int)(((xmask ? 3 : 1) << (17+1+1+5))
- | (mask << (1+1+5))
- | ((!!save_regs[1]) << 5)
- | (frame_pointer_needed
- ? FRAME_POINTER_REGNUM
- : STACK_POINTER_REGNUM)),
- (m88k_stack_size - (frame_pointer_needed ? m88k_fp_offset : 0)),
- return_address_info,
- register_save_offset);
- if (xmask)
- fprintf (file, ",0x%lx%04lx", xmask, (0xffff & xregister_save_offset));
- fputc ('\n', file);
-
- text_section ();
-}
-\f
-/* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry. NAME is the mcount function name
- (varies), SAVEP indicates whether the parameter registers need to
- be saved and restored. */
-
-void
-output_function_profiler (file, labelno, name, savep)
- FILE *file;
- int labelno;
- const char *name;
- int savep;
-{
- char label[256];
- char dbi[256];
- const char *const temp = (savep ? reg_names[2] : reg_names[10]);
-
- /* Remember to update FUNCTION_PROFILER_LENGTH. */
-
- if (savep)
- {
- fprintf (file, "\tsubu\t %s,%s,64\n", reg_names[31], reg_names[31]);
- fprintf (file, "\tst.d\t %s,%s,32\n", reg_names[2], reg_names[31]);
- fprintf (file, "\tst.d\t %s,%s,40\n", reg_names[4], reg_names[31]);
- fprintf (file, "\tst.d\t %s,%s,48\n", reg_names[6], reg_names[31]);
- fprintf (file, "\tst.d\t %s,%s,56\n", reg_names[8], reg_names[31]);
- }
-
- ASM_GENERATE_INTERNAL_LABEL (label, "LP", labelno);
- if (flag_pic == 2)
- {
- fprintf (file, "\tor.u\t %s,%s,%shi16(%s#got_rel)\n",
- temp, reg_names[0], m88k_pound_sign, &label[1]);
- fprintf (file, "\tor\t %s,%s,%slo16(%s#got_rel)\n",
- temp, temp, m88k_pound_sign, &label[1]);
- sprintf (dbi, "\tld\t %s,%s,%s\n", temp,
- reg_names[PIC_OFFSET_TABLE_REGNUM], temp);
- }
- else if (flag_pic)
- {
- sprintf (dbi, "\tld\t %s,%s,%s#got_rel\n", temp,
- reg_names[PIC_OFFSET_TABLE_REGNUM], &label[1]);
- }
- else
- {
- fprintf (file, "\tor.u\t %s,%s,%shi16(%s)\n",
- temp, reg_names[0], m88k_pound_sign, &label[1]);
- sprintf (dbi, "\tor\t %s,%s,%slo16(%s)\n",
- temp, temp, m88k_pound_sign, &label[1]);
- }
-
- if (flag_pic)
- fprintf (file, "\tbsr.n\t %s#plt\n", name);
- else
- fprintf (file, "\tbsr.n\t %s\n", name);
- fputs (dbi, file);
-
- if (savep)
- {
- fprintf (file, "\tld.d\t %s,%s,32\n", reg_names[2], reg_names[31]);
- fprintf (file, "\tld.d\t %s,%s,40\n", reg_names[4], reg_names[31]);
- fprintf (file, "\tld.d\t %s,%s,48\n", reg_names[6], reg_names[31]);
- fprintf (file, "\tld.d\t %s,%s,56\n", reg_names[8], reg_names[31]);
- fprintf (file, "\taddu\t %s,%s,64\n", reg_names[31], reg_names[31]);
- }
-}
-\f
-/* Determine whether a function argument is passed in a register, and
- which register.
-
- The arguments are CUM, which summarizes all the previous
- arguments; MODE, the machine mode of the argument; TYPE,
- the data type of the argument as a tree node or 0 if that is not known
- (which happens for C support library functions); and NAMED,
- which is 1 for an ordinary argument and 0 for nameless arguments that
- correspond to `...' in the called function's prototype.
-
- The value of the expression should either be a `reg' RTX for the
- hard register in which to pass the argument, or zero to pass the
- argument on the stack.
-
- On the m88000 the first eight words of args are normally in registers
- and the rest are pushed. Double precision floating point must be
- double word aligned (and if in a register, starting on an even
- register). Structures and unions which are not 4 byte, and word
- aligned are passed in memory rather than registers, even if they
- would fit completely in the registers under OCS rules.
-
- Note that FUNCTION_ARG and FUNCTION_INCOMING_ARG were different.
- For structures that are passed in memory, but could have been
- passed in registers, we first load the structure into the
- register, and then when the last argument is passed, we store
- the registers into the stack locations. This fixes some bugs
- where GCC did not expect to have register arguments, followed
- by stack arguments, followed by register arguments. */
-
-struct rtx_def *
-m88k_function_arg (args_so_far, mode, type, named)
- CUMULATIVE_ARGS args_so_far;
- enum machine_mode mode;
- tree type;
- int named ATTRIBUTE_UNUSED;
-{
- int bytes, words;
-
- if (type != 0 /* undo putting struct in register */
- && (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE))
- mode = BLKmode;
-
- if (mode == BLKmode && TARGET_WARN_PASS_STRUCT)
- warning ("argument #%d is a structure", args_so_far + 1);
-
- if ((args_so_far & 1) != 0
- && (mode == DImode || mode == DFmode
- || (type != 0 && TYPE_ALIGN (type) > 32)))
- args_so_far++;
-
-#ifdef ESKIT
- if (no_reg_params)
- return (rtx) 0; /* don't put args in registers */
-#endif
-
- if (type == 0 && mode == BLKmode)
- abort (); /* m88k_function_arg argument `type' is NULL for BLKmode. */
-
- bytes = (mode != BLKmode) ? GET_MODE_SIZE (mode) : int_size_in_bytes (type);
- words = (bytes + 3) / 4;
-
- if (args_so_far + words > 8)
- return (rtx) 0; /* args have exhausted registers */
-
- else if (mode == BLKmode
- && (TYPE_ALIGN (type) != BITS_PER_WORD
- || bytes != UNITS_PER_WORD))
- return (rtx) 0;
-
- return gen_rtx_REG (((mode == BLKmode) ? TYPE_MODE (type) : mode),
- 2 + args_so_far);
-}
-\f
-/* Do what is necessary for `va_start'. We look at the current function
- to determine if stdargs or varargs is used and spill as necessary.
- We return a pointer to the spill area. */
-
-struct rtx_def *
-m88k_builtin_saveregs ()
-{
- rtx addr;
- tree fntype = TREE_TYPE (current_function_decl);
- int argadj = ((!(TYPE_ARG_TYPES (fntype) != 0
- && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
- != void_type_node)))
- ? -UNITS_PER_WORD : 0) + UNITS_PER_WORD - 1;
- int fixed;
-
- variable_args_p = 1;
-
- fixed = 0;
- if (GET_CODE (current_function_arg_offset_rtx) == CONST_INT)
- fixed = ((INTVAL (current_function_arg_offset_rtx) + argadj)
- / UNITS_PER_WORD);
-
- /* Allocate the register space, and store it as the __va_reg member. */
- addr = assign_stack_local (BLKmode, 8 * UNITS_PER_WORD, -1);
- set_mem_alias_set (addr, get_varargs_alias_set ());
- RTX_UNCHANGING_P (addr) = 1;
- RTX_UNCHANGING_P (XEXP (addr, 0)) = 1;
-
- /* Now store the incoming registers. */
- if (fixed < 8)
- move_block_from_reg (2 + fixed,
- adjust_address (addr, Pmode, fixed * UNITS_PER_WORD),
- 8 - fixed,
- UNITS_PER_WORD * (8 - fixed));
-
- /* Return the address of the save area, but don't put it in a
- register. This fails when not optimizing and produces worse code
- when optimizing. */
- return XEXP (addr, 0);
-}
-
-/* Define the `__builtin_va_list' type for the ABI. */
-
-tree
-m88k_build_va_list ()
-{
- tree field_reg, field_stk, field_arg, int_ptr_type_node, record;
-
- int_ptr_type_node = build_pointer_type (integer_type_node);
-
- record = make_node (RECORD_TYPE);
-
- field_arg = build_decl (FIELD_DECL, get_identifier ("__va_arg"),
- integer_type_node);
- field_stk = build_decl (FIELD_DECL, get_identifier ("__va_stk"),
- int_ptr_type_node);
- field_reg = build_decl (FIELD_DECL, get_identifier ("__va_reg"),
- int_ptr_type_node);
-
- DECL_FIELD_CONTEXT (field_arg) = record;
- DECL_FIELD_CONTEXT (field_stk) = record;
- DECL_FIELD_CONTEXT (field_reg) = record;
-
- TYPE_FIELDS (record) = field_arg;
- TREE_CHAIN (field_arg) = field_stk;
- TREE_CHAIN (field_stk) = field_reg;
-
- layout_type (record);
- return record;
-}
-
-/* Implement `va_start' for varargs and stdarg. */
-
-void
-m88k_va_start (stdarg_p, valist, nextarg)
- int stdarg_p ATTRIBUTE_UNUSED;
- tree valist;
- rtx nextarg ATTRIBUTE_UNUSED;
-{
- tree field_reg, field_stk, field_arg;
- tree reg, stk, arg, t;
-
- field_arg = TYPE_FIELDS (va_list_type_node);
- field_stk = TREE_CHAIN (field_arg);
- field_reg = TREE_CHAIN (field_stk);
-
- arg = build (COMPONENT_REF, TREE_TYPE (field_arg), valist, field_arg);
- stk = build (COMPONENT_REF, TREE_TYPE (field_stk), valist, field_stk);
- reg = build (COMPONENT_REF, TREE_TYPE (field_reg), valist, field_reg);
-
- /* Fill in the ARG member. */
- {
- tree fntype = TREE_TYPE (current_function_decl);
- int argadj = ((!(TYPE_ARG_TYPES (fntype) != 0
- && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
- != void_type_node)))
- ? -UNITS_PER_WORD : 0) + UNITS_PER_WORD - 1;
- tree argsize;
-
- if (CONSTANT_P (current_function_arg_offset_rtx))
- {
- int fixed = (INTVAL (current_function_arg_offset_rtx)
- + argadj) / UNITS_PER_WORD;
-
- argsize = build_int_2 (fixed, 0);
- }
- else
- {
- argsize = make_tree (integer_type_node,
- current_function_arg_offset_rtx);
- argsize = fold (build (PLUS_EXPR, integer_type_node, argsize,
- build_int_2 (argadj, 0)));
- argsize = fold (build (RSHIFT_EXPR, integer_type_node, argsize,
- build_int_2 (2, 0)));
- }
-
- t = build (MODIFY_EXPR, TREE_TYPE (arg), arg, argsize);
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
- }
-
- /* Store the arg pointer in the __va_stk member. */
- t = make_tree (TREE_TYPE (stk), virtual_incoming_args_rtx);
- t = build (MODIFY_EXPR, TREE_TYPE (stk), stk, t);
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
-
- /* Tuck the return value from __builtin_saveregs into __va_reg. */
- t = make_tree (TREE_TYPE (reg), expand_builtin_saveregs ());
- t = build (MODIFY_EXPR, TREE_TYPE (reg), reg, t);
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
-}
-
-/* Implement `va_arg'. */
-
-rtx
-m88k_va_arg (valist, type)
- tree valist, type;
-{
- tree field_reg, field_stk, field_arg;
- tree reg, stk, arg, arg_align, base, t;
- int size, wsize, align, reg_p;
- rtx addr_rtx;
-
- field_arg = TYPE_FIELDS (va_list_type_node);
- field_stk = TREE_CHAIN (field_arg);
- field_reg = TREE_CHAIN (field_stk);
-
- arg = build (COMPONENT_REF, TREE_TYPE (field_arg), valist, field_arg);
- stk = build (COMPONENT_REF, TREE_TYPE (field_stk), valist, field_stk);
- reg = build (COMPONENT_REF, TREE_TYPE (field_reg), valist, field_reg);
-
- size = int_size_in_bytes (type);
- wsize = (size + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
- align = 1 << ((TYPE_ALIGN (type) / BITS_PER_UNIT) >> 3);
- reg_p = (AGGREGATE_TYPE_P (type)
- ? size == UNITS_PER_WORD && TYPE_ALIGN (type) == BITS_PER_WORD
- : size <= 2*UNITS_PER_WORD);
-
- /* Align __va_arg to the (doubleword?) boundary above. */
- t = build (PLUS_EXPR, TREE_TYPE (arg), arg, build_int_2 (align - 1, 0));
- arg_align = build (BIT_AND_EXPR, TREE_TYPE (t), t, build_int_2 (-align, -1));
- arg_align = save_expr (arg_align);
-
- /* Decide if we should read from stack or regs. */
- t = build (LT_EXPR, integer_type_node, arg_align, build_int_2 (8, 0));
- base = build (COND_EXPR, TREE_TYPE (reg), t, reg, stk);
-
- /* Find the final address. */
- t = build (PLUS_EXPR, TREE_TYPE (base), base, arg_align);
- addr_rtx = expand_expr (t, NULL_RTX, Pmode, EXPAND_NORMAL);
- addr_rtx = copy_to_reg (addr_rtx);
-
- /* Increment __va_arg. */
- t = build (PLUS_EXPR, TREE_TYPE (arg), arg_align, build_int_2 (wsize, 0));
- t = build (MODIFY_EXPR, TREE_TYPE (arg), arg, t);
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
-
- return addr_rtx;
-}
-\f
-/* If cmpsi has not been generated, emit code to do the test. Return the
- expression describing the test of operator OP. */
-
-rtx
-emit_test (op, mode)
- enum rtx_code op;
- enum machine_mode mode;
-{
- if (m88k_compare_reg == 0)
- emit_insn (gen_test (m88k_compare_op0, m88k_compare_op1));
- return (gen_rtx (op, mode, m88k_compare_reg, const0_rtx));
-}
-
-/* Determine how to best perform cmpsi/bxx, where cmpsi has a constant
- operand. All tests with zero (albeit swapped) and all equality tests
- with a constant are done with bcnd. The remaining cases are swapped
- as needed. */
-
-void
-emit_bcnd (op, label)
- enum rtx_code op;
- rtx label;
-{
- if (m88k_compare_op1 == const0_rtx)
- emit_jump_insn (gen_bcnd
- (gen_rtx (op, VOIDmode,m88k_compare_op0, const0_rtx),
- label));
- else if (m88k_compare_op0 == const0_rtx)
- emit_jump_insn (gen_bcnd
- (gen_rtx (swap_condition (op),
- VOIDmode, m88k_compare_op1, const0_rtx),
- label));
- else if (op != EQ && op != NE)
- emit_jump_insn (gen_bxx (emit_test (op, VOIDmode), label));
- else
- {
- rtx zero = gen_reg_rtx (SImode);
- rtx reg, constant;
- int value;
-
- if (GET_CODE (m88k_compare_op1) == CONST_INT)
- {
- reg = force_reg (SImode, m88k_compare_op0);
- constant = m88k_compare_op1;
- }
- else
- {
- reg = force_reg (SImode, m88k_compare_op1);
- constant = m88k_compare_op0;
- }
- value = INTVAL (constant);
-
- /* Perform an arithmetic computation to make the compared-to value
- zero, but avoid loosing if the bcnd is later changed into sxx. */
- if (SMALL_INTVAL (value))
- emit_jump_insn (gen_bxx (emit_test (op, VOIDmode), label));
- else
- {
- if (SMALL_INTVAL (-value))
- emit_insn (gen_addsi3 (zero, reg,
- GEN_INT (-value)));
- else
- emit_insn (gen_xorsi3 (zero, reg, constant));
-
- emit_jump_insn (gen_bcnd (gen_rtx (op, VOIDmode,
- zero, const0_rtx),
- label));
- }
- }
-}
-\f
-/* Print an operand. Recognize special options, documented below. */
-
-void
-print_operand (file, x, code)
- FILE *file;
- rtx x;
- int code;
-{
- enum rtx_code xc = (x ? GET_CODE (x) : UNKNOWN);
- register int value = (xc == CONST_INT ? INTVAL (x) : 0);
- static int sequencep;
- static int reversep;
-
- if (sequencep)
- {
- if (code < 'B' || code > 'E')
- output_operand_lossage ("%%R not followed by %%B/C/D/E");
- if (reversep)
- xc = reverse_condition (xc);
- sequencep = 0;
- }
-
- switch (code)
- {
- case '*': /* addressing base register for PIC */
- fputs (reg_names[PIC_OFFSET_TABLE_REGNUM], file); return;
-
- case '#': /* SVR4 pound-sign syntax character (empty if SVR3) */
- fputs (m88k_pound_sign, file); return;
-
- case 'V': /* Output a serializing instruction as needed if the operand
- (assumed to be a MEM) is a volatile load. */
- case 'v': /* ditto for a volatile store. */
- if (MEM_VOLATILE_P (x) && TARGET_SERIALIZE_VOLATILE)
- {
- /* The m88110 implements two FIFO queues, one for loads and
- one for stores. These queues mean that loads complete in
- their issue order as do stores. An interaction between the
- history buffer and the store reservation station ensures
- that a store will not bypass load. Finally, a load will not
- bypass store, but only when they reference the same address.
-
- To avoid this reordering (a load bypassing a store) for
- volatile references, a serializing instruction is output.
- We choose the fldcr instruction as it does not serialize on
- the m88100 so that -m88000 code will not be degraded.
-
- The mechanism below is completed by having CC_STATUS_INIT set
- the code to the unknown value. */
-
- /*
- hassey 6/30/93
- A problem with 88110 4.1 & 4.2 makes the use of fldcr for
- this purpose undesirable. Instead we will use tb1, this will
- cause serialization on the 88100 but such is life.
- */
-
- static rtx last_addr = 0;
- if (code == 'V' /* Only need to serialize before a load. */
- && m88k_volatile_code != 'V' /* Loads complete in FIFO order. */
- && !(m88k_volatile_code == 'v'
- && GET_CODE (XEXP (x, 0)) == LO_SUM
- && rtx_equal_p (XEXP (XEXP (x, 0), 1), last_addr)))
- fprintf (file,
-#if 0
-#ifdef AS_BUG_FLDCR
- "fldcr\t %s,%scr63\n\t",
-#else
- "fldcr\t %s,%sfcr63\n\t",
-#endif
- reg_names[0], m88k_pound_sign);
-#else /* 0 */
- "tb1\t 1,%s,0xff\n\t", reg_names[0]);
-#endif /* 0 */
- m88k_volatile_code = code;
- last_addr = (GET_CODE (XEXP (x, 0)) == LO_SUM
- ? XEXP (XEXP (x, 0), 1) : 0);
- }
- return;
-
- case 'X': /* print the upper 16 bits... */
- value >>= 16;
- case 'x': /* print the lower 16 bits of the integer constant in hex */
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%x/X value");
- fprintf (file, "0x%x", value & 0xffff); return;
-
- case 'H': /* print the low 16 bits of the negated integer constant */
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%H value");
- value = -value;
- case 'h': /* print the register or low 16 bits of the integer constant */
- if (xc == REG)
- goto reg;
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%h value");
- fprintf (file, "%d", value & 0xffff);
- return;
-
- case 'Q': /* print the low 8 bits of the negated integer constant */
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%Q value");
- value = -value;
- case 'q': /* print the register or low 8 bits of the integer constant */
- if (xc == REG)
- goto reg;
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%q value");
- fprintf (file, "%d", value & 0xff);
- return;
-
- case 'w': /* print the integer constant (X == 32 ? 0 : 32 - X) */
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%o value");
- fprintf (file, "%d", value == 32 ? 0 : 32 - value);
- return;
-
- case 'p': /* print the logarithm of the integer constant */
- if (xc != CONST_INT
- || (value = exact_log2 (value)) < 0)
- output_operand_lossage ("invalid %%p value");
- fprintf (file, "%d", value);
- return;
-
- case 'S': /* compliment the value and then... */
- value = ~value;
- case 's': /* print the width and offset values forming the integer
- constant with a SET instruction. See integer_ok_for_set. */
- {
- register unsigned mask, uval = value;
- register int top, bottom;
-
- if (xc != CONST_INT)
- output_operand_lossage ("invalid %%s/S value");
- /* All the "one" bits must be contiguous. If so, MASK will be
- a power of two or zero. */
- mask = (uval | (uval - 1)) + 1;
- if (!(uval && POWER_OF_2_or_0 (mask)))
- output_operand_lossage ("invalid %%s/S value");
- top = mask ? exact_log2 (mask) : 32;
- bottom = exact_log2 (uval & ~(uval - 1));
- fprintf (file,"%d<%d>", top - bottom, bottom);
- return;
- }
-
- case 'P': /* print nothing if pc_rtx; output label_ref */
- if (xc == LABEL_REF)
- output_addr_const (file, x);
- else if (xc != PC)
- output_operand_lossage ("invalid %%P operand");
- return;
-
- case 'L': /* print 0 or 1 if operand is label_ref and then... */
- fputc (xc == LABEL_REF ? '1' : '0', file);
- case '.': /* print .n if delay slot is used */
- fputs ((final_sequence
- && ! INSN_ANNULLED_BRANCH_P (XVECEXP (final_sequence, 0, 0)))
- ? ".n\t" : "\t", file);
- return;
-
- case '!': /* Reverse the following condition. */
- sequencep++;
- reversep = 1;
- return;
- case 'R': /* reverse the condition of the next print_operand
- if operand is a label_ref. */
- sequencep++;
- reversep = (xc == LABEL_REF);
- return;
-
- case 'B': /* bcnd branch values */
- fputs (m88k_pound_sign, file);
- switch (xc)
- {
- case EQ: fputs ("eq0", file); return;
- case NE: fputs ("ne0", file); return;
- case GT: fputs ("gt0", file); return;
- case LE: fputs ("le0", file); return;
- case LT: fputs ("lt0", file); return;
- case GE: fputs ("ge0", file); return;
- default: output_operand_lossage ("invalid %%B value");
- }
-
- case 'C': /* bb0/bb1 branch values for comparisons */
- fputs (m88k_pound_sign, file);
- switch (xc)
- {
- case EQ: fputs ("eq", file); return;
- case NE: fputs ("ne", file); return;
- case GT: fputs ("gt", file); return;
- case LE: fputs ("le", file); return;
- case LT: fputs ("lt", file); return;
- case GE: fputs ("ge", file); return;
- case GTU: fputs ("hi", file); return;
- case LEU: fputs ("ls", file); return;
- case LTU: fputs ("lo", file); return;
- case GEU: fputs ("hs", file); return;
- default: output_operand_lossage ("invalid %%C value");
- }
-
- case 'D': /* bcnd branch values for float comparisons */
- switch (xc)
- {
- case EQ: fputs ("0xa", file); return;
- case NE: fputs ("0x5", file); return;
- case GT: fputs (m88k_pound_sign, file);
- fputs ("gt0", file); return;
- case LE: fputs ("0xe", file); return;
- case LT: fputs ("0x4", file); return;
- case GE: fputs ("0xb", file); return;
- default: output_operand_lossage ("invalid %%D value");
- }
-
- case 'E': /* bcnd branch values for special integers */
- switch (xc)
- {
- case EQ: fputs ("0x8", file); return;
- case NE: fputs ("0x7", file); return;
- default: output_operand_lossage ("invalid %%E value");
- }
-
- case 'd': /* second register of a two register pair */
- if (xc != REG)
- output_operand_lossage ("`%%d' operand isn't a register");
- fputs (reg_names[REGNO (x) + 1], file);
- return;
-
- case 'r': /* an immediate 0 should be represented as `r0' */
- if (x == const0_rtx)
- {
- fputs (reg_names[0], file);
- return;
- }
- else if (xc != REG)
- output_operand_lossage ("invalid %%r value");
- case 0:
- name:
- if (xc == REG)
- {
- reg:
- if (REGNO (x) == ARG_POINTER_REGNUM)
- output_operand_lossage ("operand is r0");
- else
- fputs (reg_names[REGNO (x)], file);
- }
- else if (xc == PLUS)
- output_address (x);
- else if (xc == MEM)
- output_address (XEXP (x, 0));
- else if (flag_pic && xc == UNSPEC)
- {
- output_addr_const (file, XVECEXP (x, 0, 0));
- fputs ("#got_rel", file);
- }
- else if (xc == CONST_DOUBLE)
- output_operand_lossage ("operand is const_double");
- else
- output_addr_const (file, x);
- return;
-
- case 'g': /* append #got_rel as needed */
- if (flag_pic && (xc == SYMBOL_REF || xc == LABEL_REF))
- {
- output_addr_const (file, x);
- fputs ("#got_rel", file);
- return;
- }
- goto name;
-
- case 'a': /* (standard), assume operand is an address */
- case 'c': /* (standard), assume operand is an immediate value */
- case 'l': /* (standard), assume operand is a label_ref */
- case 'n': /* (standard), like %c, except negate first */
- default:
- output_operand_lossage ("invalid code");
- }
-}
-
-void
-print_operand_address (file, addr)
- FILE *file;
- rtx addr;
-{
- register rtx reg0, reg1, temp;
-
- switch (GET_CODE (addr))
- {
- case REG:
- if (REGNO (addr) == ARG_POINTER_REGNUM)
- abort ();
- else
- fprintf (file, "%s,%s", reg_names[0], reg_names [REGNO (addr)]);
- break;
-
- case LO_SUM:
- fprintf (file, "%s,%slo16(",
- reg_names[REGNO (XEXP (addr, 0))], m88k_pound_sign);
- output_addr_const (file, XEXP (addr, 1));
- fputc (')', file);
- break;
-
- case PLUS:
- reg0 = XEXP (addr, 0);
- reg1 = XEXP (addr, 1);
- if (GET_CODE (reg0) == MULT || GET_CODE (reg0) == CONST_INT)
- {
- rtx tmp = reg0;
- reg0 = reg1;
- reg1 = tmp;
- }
-
- if ((REG_P (reg0) && REGNO (reg0) == ARG_POINTER_REGNUM)
- || (REG_P (reg1) && REGNO (reg1) == ARG_POINTER_REGNUM))
- abort ();
-
- else if (REG_P (reg0))
- {
- if (REG_P (reg1))
- fprintf (file, "%s,%s",
- reg_names [REGNO (reg0)], reg_names [REGNO (reg1)]);
-
- else if (GET_CODE (reg1) == CONST_INT)
- fprintf (file, "%s,%d",
- reg_names [REGNO (reg0)], INTVAL (reg1));
-
- else if (GET_CODE (reg1) == MULT)
- {
- rtx mreg = XEXP (reg1, 0);
- if (REGNO (mreg) == ARG_POINTER_REGNUM)
- abort ();
-
- fprintf (file, "%s[%s]", reg_names[REGNO (reg0)],
- reg_names[REGNO (mreg)]);
- }
-
- else if (GET_CODE (reg1) == ZERO_EXTRACT)
- {
- fprintf (file, "%s,%slo16(",
- reg_names[REGNO (reg0)], m88k_pound_sign);
- output_addr_const (file, XEXP (reg1, 0));
- fputc (')', file);
- }
-
- else if (flag_pic)
- {
- fprintf (file, "%s,", reg_names[REGNO (reg0)]);
- output_addr_const (file, reg1);
- fputs ("#got_rel", file);
- }
- else abort ();
- }
-
- else
- abort ();
- break;
-
- case MULT:
- if (REGNO (XEXP (addr, 0)) == ARG_POINTER_REGNUM)
- abort ();
-
- fprintf (file, "%s[%s]",
- reg_names[0], reg_names[REGNO (XEXP (addr, 0))]);
- break;
-
- case CONST_INT:
- fprintf (file, "%s,%d", reg_names[0], INTVAL (addr));
- break;
-
- default:
- fprintf (file, "%s,", reg_names[0]);
- if (SHORT_ADDRESS_P (addr, temp))
- {
- fprintf (file, "%siw16(", m88k_pound_sign);
- output_addr_const (file, addr);
- fputc (')', file);
- }
- else
- output_addr_const (file, addr);
- }
-}
-
-/* Return true if X is an address which needs a temporary register when
- reloaded while generating PIC code. */
-
-int
-pic_address_needs_scratch (x)
- rtx x;
-{
- /* An address which is a symbolic plus a non SMALL_INT needs a temp reg. */
- if (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == PLUS
- && GET_CODE (XEXP (XEXP (x, 0), 0)) == SYMBOL_REF
- && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
- && ! ADD_INT (XEXP (XEXP (x, 0), 1)))
- return 1;
-
- return 0;
-}
-
-/* Returns 1 if OP is either a symbol reference or a sum of a symbol
- reference and a constant. */
-
-int
-symbolic_operand (op, mode)
- register rtx op;
- enum machine_mode mode;
-{
- switch (GET_CODE (op))
- {
- case SYMBOL_REF:
- case LABEL_REF:
- return 1;
-
- case CONST:
- op = XEXP (op, 0);
- return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
- || GET_CODE (XEXP (op, 0)) == LABEL_REF)
- && GET_CODE (XEXP (op, 1)) == CONST_INT);
-
- /* ??? This clause seems to be irrelevant. */
- case CONST_DOUBLE:
- return GET_MODE (op) == mode;
-
- default:
- return 0;
- }
-}
-
-#if defined (CTOR_LIST_BEGIN) && !defined (OBJECT_FORMAT_ELF)
-static void
-m88k_svr3_asm_out_constructor (symbol, priority)
- rtx symbol;
- int priority ATTRIBUTE_UNUSED;
-{
- const char *name = XSTR (symbol, 0);
-
- init_section ();
- fprintf (asm_out_file, "\tor.u\t r13,r0,hi16(");
- assemble_name (asm_out_file, name);
- fprintf (asm_out_file, ")\n\tor\t r13,r13,lo16(");
- assemble_name (asm_out_file, name);
- fprintf (asm_out_file, ")\n\tsubu\t r31,r31,%d\n\tst\t r13,r31,%d\n",
- STACK_BOUNDARY / BITS_PER_UNIT, REG_PARM_STACK_SPACE (0));
-}
-
-static void
-m88k_svr3_asm_out_destructor (symbol, priority)
- rtx symbol;
- int priority ATTRIBUTE_UNUSED;
-{
- int i;
-
- fini_section ();
- assemble_integer (symbol, UNITS_PER_WORD, BITS_PER_WORD, 1);
- for (i = 1; i < 4; i++)
- assemble_integer (constm1_rtx, UNITS_PER_WORD, BITS_PER_WORD, 1);
-}
-#endif /* INIT_SECTION_ASM_OP && ! OBJECT_FORMAT_ELF */
-
-/* Adjust the cost of INSN based on the relationship between INSN that
- is dependent on DEP_INSN through the dependence LINK. The default
- is to make no adjustment to COST.
-
- On the m88k, ignore the cost of anti- and output-dependencies. On
- the m88100, a store can issue two cycles before the value (not the
- address) has finished computing. */
-
-static int
-m88k_adjust_cost (insn, link, dep, cost)
- rtx insn;
- rtx link;
- rtx dep;
- int cost;
-{
- if (REG_NOTE_KIND (link) != 0)
- return 0; /* Anti or output dependence. */
-
- if (! TARGET_88100
- && recog_memoized (insn) >= 0
- && get_attr_type (insn) == TYPE_STORE
- && SET_SRC (PATTERN (insn)) == SET_DEST (PATTERN (dep)))
- return cost - 4; /* 88110 store reservation station. */
-
- return cost;
-}
projects / msp430-gcc.git / blobdiff