+++ /dev/null
-/* Special varargs support for i860.
- Copyright (C) 2001 Free Software Foundation, Inc.
-
-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.
-
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
-
-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. */
-
-#if defined(__svr4__) || defined(__alliant__)
- .text
- .align 4
-
-/* The Alliant needs the added underscore. */
- .globl __builtin_saveregs
-__builtin_saveregs:
- .globl ___builtin_saveregs
-___builtin_saveregs:
-
- andnot 0x0f,%sp,%sp /* round down to 16-byte boundary */
- adds -96,%sp,%sp /* allocate stack space for reg save
- area and also for a new va_list
- structure */
- /* Save all argument registers in the arg reg save area. The
- arg reg save area must have the following layout (according
- to the svr4 ABI):
-
- struct {
- union {
- float freg[8];
- double dreg[4];
- } float_regs;
- long ireg[12];
- };
- */
-
- fst.q %f8, 0(%sp) /* save floating regs (f8-f15) */
- fst.q %f12,16(%sp)
-
- st.l %r16,32(%sp) /* save integer regs (r16-r27) */
- st.l %r17,36(%sp)
- st.l %r18,40(%sp)
- st.l %r19,44(%sp)
- st.l %r20,48(%sp)
- st.l %r21,52(%sp)
- st.l %r22,56(%sp)
- st.l %r23,60(%sp)
- st.l %r24,64(%sp)
- st.l %r25,68(%sp)
- st.l %r26,72(%sp)
- st.l %r27,76(%sp)
-
- adds 80,%sp,%r16 /* compute the address of the new
- va_list structure. Put in into
- r16 so that it will be returned
- to the caller. */
-
- /* Initialize all fields of the new va_list structure. This
- structure looks like:
-
- typedef struct {
- unsigned long ireg_used;
- unsigned long freg_used;
- long *reg_base;
- long *mem_ptr;
- } va_list;
- */
-
- st.l %r0, 0(%r16) /* nfixed */
- st.l %r0, 4(%r16) /* nfloating */
- st.l %sp, 8(%r16) /* __va_ctl points to __va_struct. */
- bri %r1 /* delayed return */
- st.l %r28,12(%r16) /* pointer to overflow args */
-
-#else /* not __svr4__ */
-#if defined(__PARAGON__)
- /*
- * we'll use SVR4-ish varargs but need SVR3.2 assembler syntax,
- * and we stand a better chance of hooking into libraries
- * compiled by PGI. [andyp@ssd.intel.com]
- */
- .text
- .align 4
- .globl __builtin_saveregs
-__builtin_saveregs:
- .globl ___builtin_saveregs
-___builtin_saveregs:
-
- andnot 0x0f,sp,sp /* round down to 16-byte boundary */
- adds -96,sp,sp /* allocate stack space for reg save
- area and also for a new va_list
- structure */
- /* Save all argument registers in the arg reg save area. The
- arg reg save area must have the following layout (according
- to the svr4 ABI):
-
- struct {
- union {
- float freg[8];
- double dreg[4];
- } float_regs;
- long ireg[12];
- };
- */
-
- fst.q f8, 0(sp)
- fst.q f12,16(sp)
- st.l r16,32(sp)
- st.l r17,36(sp)
- st.l r18,40(sp)
- st.l r19,44(sp)
- st.l r20,48(sp)
- st.l r21,52(sp)
- st.l r22,56(sp)
- st.l r23,60(sp)
- st.l r24,64(sp)
- st.l r25,68(sp)
- st.l r26,72(sp)
- st.l r27,76(sp)
-
- adds 80,sp,r16 /* compute the address of the new
- va_list structure. Put in into
- r16 so that it will be returned
- to the caller. */
-
- /* Initialize all fields of the new va_list structure. This
- structure looks like:
-
- typedef struct {
- unsigned long ireg_used;
- unsigned long freg_used;
- long *reg_base;
- long *mem_ptr;
- } va_list;
- */
-
- st.l r0, 0(r16) /* nfixed */
- st.l r0, 4(r16) /* nfloating */
- st.l sp, 8(r16) /* __va_ctl points to __va_struct. */
- bri r1 /* delayed return */
- st.l r28,12(r16) /* pointer to overflow args */
-#else /* not __PARAGON__ */
- .text
- .align 4
-
- .globl ___builtin_saveregs
-___builtin_saveregs:
- mov sp,r30
- andnot 0x0f,sp,sp
- adds -96,sp,sp /* allocate sufficient space on the stack */
-
-/* Fill in the __va_struct. */
- st.l r16, 0(sp) /* save integer regs (r16-r27) */
- st.l r17, 4(sp) /* int fixed[12] */
- st.l r18, 8(sp)
- st.l r19,12(sp)
- st.l r20,16(sp)
- st.l r21,20(sp)
- st.l r22,24(sp)
- st.l r23,28(sp)
- st.l r24,32(sp)
- st.l r25,36(sp)
- st.l r26,40(sp)
- st.l r27,44(sp)
-
- fst.q f8, 48(sp) /* save floating regs (f8-f15) */
- fst.q f12,64(sp) /* int floating[8] */
-
-/* Fill in the __va_ctl. */
- st.l sp, 80(sp) /* __va_ctl points to __va_struct. */
- st.l r28,84(sp) /* pointer to more args */
- st.l r0, 88(sp) /* nfixed */
- st.l r0, 92(sp) /* nfloating */
-
- adds 80,sp,r16 /* return address of the __va_ctl. */
- bri r1
- mov r30,sp
- /* recover stack and pass address to start
- of data. */
-#endif /* not __PARAGON__ */
-#endif /* not __svr4__ */
projects / msp430-gcc.git / blobdiff