+++ /dev/null
-/*
- * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
- * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
-/* Boehm, November 17, 1995 12:13 pm PST */
-# include "private/gc_priv.h"
-# include <stdio.h>
-# include <setjmp.h>
-# if defined(OS2) || defined(CX_UX)
-# define _setjmp(b) setjmp(b)
-# define _longjmp(b,v) longjmp(b,v)
-# endif
-# ifdef AMIGA
-# ifndef __GNUC__
-# include <dos.h>
-# else
-# include <machine/reg.h>
-# endif
-# endif
-
-#if defined(__MWERKS__) && !defined(POWERPC)
-
-asm static void PushMacRegisters()
-{
- sub.w #4,sp // reserve space for one parameter.
- move.l a2,(sp)
- jsr GC_push_one
- move.l a3,(sp)
- jsr GC_push_one
- move.l a4,(sp)
- jsr GC_push_one
-# if !__option(a6frames)
- // <pcb> perhaps a6 should be pushed if stack frames are not being used.
- move.l a6,(sp)
- jsr GC_push_one
-# endif
- // skip a5 (globals), a6 (frame pointer), and a7 (stack pointer)
- move.l d2,(sp)
- jsr GC_push_one
- move.l d3,(sp)
- jsr GC_push_one
- move.l d4,(sp)
- jsr GC_push_one
- move.l d5,(sp)
- jsr GC_push_one
- move.l d6,(sp)
- jsr GC_push_one
- move.l d7,(sp)
- jsr GC_push_one
- add.w #4,sp // fix stack.
- rts
-}
-
-#endif /* __MWERKS__ */
-
-# if defined(SPARC) || defined(IA64)
- /* Value returned from register flushing routine; either sp (SPARC) */
- /* or ar.bsp (IA64) */
- word GC_save_regs_ret_val;
-# endif
-
-/* Routine to mark from registers that are preserved by the C compiler. */
-/* This must be ported to every new architecture. There is a generic */
-/* version at the end, that is likely, but not guaranteed to work */
-/* on your architecture. Run the test_setjmp program to see whether */
-/* there is any chance it will work. */
-
-#ifndef USE_GENERIC_PUSH_REGS
-void GC_push_regs()
-{
-# ifdef RT
- register long TMP_SP; /* must be bound to r11 */
-# endif
-
-# if defined(MIPS) && defined(LINUX)
- /* I'm not sure whether this has actually been tested. */
-# define call_push(x) asm("move $4," x ";"); asm("jal GC_push_one")
- call_push("$2");
- call_push("$3");
- call_push("$16");
- call_push("$17");
- call_push("$18");
- call_push("$19");
- call_push("$20");
- call_push("$21");
- call_push("$22");
- call_push("$23");
- call_push("$30");
-# undef call_push
-# endif /* MIPS && LINUX */
-
-# ifdef VAX
- /* VAX - generic code below does not work under 4.2 */
- /* r1 through r5 are caller save, and therefore */
- /* on the stack or dead. */
- asm("pushl r11"); asm("calls $1,_GC_push_one");
- asm("pushl r10"); asm("calls $1,_GC_push_one");
- asm("pushl r9"); asm("calls $1,_GC_push_one");
- asm("pushl r8"); asm("calls $1,_GC_push_one");
- asm("pushl r7"); asm("calls $1,_GC_push_one");
- asm("pushl r6"); asm("calls $1,_GC_push_one");
-# endif
-# if defined(M68K) && (defined(SUNOS4) || defined(NEXT))
- /* M68K SUNOS - could be replaced by generic code */
- /* a0, a1 and d1 are caller save */
- /* and therefore are on stack or dead. */
-
- asm("subqw #0x4,sp"); /* allocate word on top of stack */
-
- asm("movl a2,sp@"); asm("jbsr _GC_push_one");
- asm("movl a3,sp@"); asm("jbsr _GC_push_one");
- asm("movl a4,sp@"); asm("jbsr _GC_push_one");
- asm("movl a5,sp@"); asm("jbsr _GC_push_one");
- /* Skip frame pointer and stack pointer */
- asm("movl d1,sp@"); asm("jbsr _GC_push_one");
- asm("movl d2,sp@"); asm("jbsr _GC_push_one");
- asm("movl d3,sp@"); asm("jbsr _GC_push_one");
- asm("movl d4,sp@"); asm("jbsr _GC_push_one");
- asm("movl d5,sp@"); asm("jbsr _GC_push_one");
- asm("movl d6,sp@"); asm("jbsr _GC_push_one");
- asm("movl d7,sp@"); asm("jbsr _GC_push_one");
-
- asm("addqw #0x4,sp"); /* put stack back where it was */
-# endif
-
-# if defined(M68K) && defined(HP)
- /* M68K HP - could be replaced by generic code */
- /* a0, a1 and d1 are caller save. */
-
- asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
-
- asm("mov.l %a2,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a3,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a4,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a5,(%sp)"); asm("jsr _GC_push_one");
- /* Skip frame pointer and stack pointer */
- asm("mov.l %d1,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d2,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d3,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d4,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d5,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d6,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d7,(%sp)"); asm("jsr _GC_push_one");
-
- asm("addq.w &0x4,%sp"); /* put stack back where it was */
-# endif /* M68K HP */
-
-# if defined(M68K) && defined(AMIGA)
- /* AMIGA - could be replaced by generic code */
- /* a0, a1, d0 and d1 are caller save */
-
-# ifdef __GNUC__
- asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
-
- asm("mov.l %a2,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a3,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a4,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a5,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %a6,(%sp)"); asm("jsr _GC_push_one");
- /* Skip frame pointer and stack pointer */
- asm("mov.l %d2,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d3,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d4,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d5,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d6,(%sp)"); asm("jsr _GC_push_one");
- asm("mov.l %d7,(%sp)"); asm("jsr _GC_push_one");
-
- asm("addq.w &0x4,%sp"); /* put stack back where it was */
-# else /* !__GNUC__ */
- GC_push_one(getreg(REG_A2));
- GC_push_one(getreg(REG_A3));
-# ifndef __SASC
- /* Can probably be changed to #if 0 -Kjetil M. (a4=globals)*/
- GC_push_one(getreg(REG_A4));
-# endif
- GC_push_one(getreg(REG_A5));
- GC_push_one(getreg(REG_A6));
- /* Skip stack pointer */
- GC_push_one(getreg(REG_D2));
- GC_push_one(getreg(REG_D3));
- GC_push_one(getreg(REG_D4));
- GC_push_one(getreg(REG_D5));
- GC_push_one(getreg(REG_D6));
- GC_push_one(getreg(REG_D7));
-# endif /* !__GNUC__ */
-# endif /* AMIGA */
-
-# if defined(M68K) && defined(MACOS)
-# if defined(THINK_C)
-# define PushMacReg(reg) \
- move.l reg,(sp) \
- jsr GC_push_one
- asm {
- sub.w #4,sp ; reserve space for one parameter.
- PushMacReg(a2);
- PushMacReg(a3);
- PushMacReg(a4);
- ; skip a5 (globals), a6 (frame pointer), and a7 (stack pointer)
- PushMacReg(d2);
- PushMacReg(d3);
- PushMacReg(d4);
- PushMacReg(d5);
- PushMacReg(d6);
- PushMacReg(d7);
- add.w #4,sp ; fix stack.
- }
-# undef PushMacReg
-# endif /* THINK_C */
-# if defined(__MWERKS__)
- PushMacRegisters();
-# endif /* __MWERKS__ */
-# endif /* MACOS */
-
-# if defined(I386) &&!defined(OS2) &&!defined(SVR4) \
- && (defined(__MINGW32__) || !defined(MSWIN32)) \
- && !defined(SCO) && !defined(SCO_ELF) \
- && !(defined(LINUX) && defined(__ELF__)) \
- && !(defined(FREEBSD) && defined(__ELF__)) \
- && !(defined(NETBSD) && defined(__ELF__)) \
- && !(defined(OPENBSD) && defined(__ELF__)) \
- && !(defined(BEOS) && defined(__ELF__)) \
- && !defined(DOS4GW) && !defined(HURD)
- /* I386 code, generic code does not appear to work */
- /* It does appear to work under OS2, and asms dont */
- /* This is used for some 38g UNIX variants and for CYGWIN32 */
- asm("pushl %eax"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ecx"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %edx"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ebp"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %esi"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %edi"); asm("call _GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ebx"); asm("call _GC_push_one"); asm("addl $4,%esp");
-# endif
-
-# if ( defined(I386) && defined(LINUX) && defined(__ELF__) ) \
- || ( defined(I386) && defined(FREEBSD) && defined(__ELF__) ) \
- || ( defined(I386) && defined(NETBSD) && defined(__ELF__) ) \
- || ( defined(I386) && defined(OPENBSD) && defined(__ELF__) ) \
- || ( defined(I386) && defined(HURD) && defined(__ELF__) )
-
- /* This is modified for Linux with ELF (Note: _ELF_ only) */
- /* This section handles FreeBSD with ELF. */
- /* Eax is caller-save and dead here. Other caller-save */
- /* registers could also be skipped. We assume there are no */
- /* pointers in MMX registers, etc. */
- /* We combine instructions in a single asm to prevent gcc from */
- /* inserting code in the middle. */
- asm("pushl %ecx; call GC_push_one; addl $4,%esp");
- asm("pushl %edx; call GC_push_one; addl $4,%esp");
- asm("pushl %ebp; call GC_push_one; addl $4,%esp");
- asm("pushl %esi; call GC_push_one; addl $4,%esp");
- asm("pushl %edi; call GC_push_one; addl $4,%esp");
- asm("pushl %ebx; call GC_push_one; addl $4,%esp");
-# endif
-
-# if ( defined(I386) && defined(BEOS) && defined(__ELF__) )
- /* As far as I can understand from */
- /* http://www.beunited.org/articles/jbq/nasm.shtml, */
- /* only ebp, esi, edi and ebx are not scratch. How MMX */
- /* etc. registers should be treated, I have no idea. */
- asm("pushl %ebp; call GC_push_one; addl $4,%esp");
- asm("pushl %esi; call GC_push_one; addl $4,%esp");
- asm("pushl %edi; call GC_push_one; addl $4,%esp");
- asm("pushl %ebx; call GC_push_one; addl $4,%esp");
-# endif
-
-# if defined(I386) && defined(MSWIN32) && !defined(__MINGW32__) \
- && !defined(USE_GENERIC)
- /* I386 code, Microsoft variant */
- __asm push eax
- __asm call GC_push_one
- __asm add esp,4
- __asm push ebx
- __asm call GC_push_one
- __asm add esp,4
- __asm push ecx
- __asm call GC_push_one
- __asm add esp,4
- __asm push edx
- __asm call GC_push_one
- __asm add esp,4
- __asm push ebp
- __asm call GC_push_one
- __asm add esp,4
- __asm push esi
- __asm call GC_push_one
- __asm add esp,4
- __asm push edi
- __asm call GC_push_one
- __asm add esp,4
-# endif
-
-# if defined(I386) && (defined(SVR4) || defined(SCO) || defined(SCO_ELF))
- /* I386 code, SVR4 variant, generic code does not appear to work */
- asm("pushl %eax"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ebx"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ecx"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %edx"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %ebp"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %esi"); asm("call GC_push_one"); asm("addl $4,%esp");
- asm("pushl %edi"); asm("call GC_push_one"); asm("addl $4,%esp");
-# endif
-
-# ifdef NS32K
- asm ("movd r3, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
- asm ("movd r4, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
- asm ("movd r5, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
- asm ("movd r6, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
- asm ("movd r7, tos"); asm ("bsr ?_GC_push_one"); asm ("adjspb $-4");
-# endif
-
-# if defined(SPARC)
- {
- word GC_save_regs_in_stack();
-
- GC_save_regs_ret_val = GC_save_regs_in_stack();
- }
-# endif
-
-# ifdef RT
- GC_push_one(TMP_SP); /* GC_push_one from r11 */
-
- asm("cas r11, r6, r0"); GC_push_one(TMP_SP); /* r6 */
- asm("cas r11, r7, r0"); GC_push_one(TMP_SP); /* through */
- asm("cas r11, r8, r0"); GC_push_one(TMP_SP); /* r10 */
- asm("cas r11, r9, r0"); GC_push_one(TMP_SP);
- asm("cas r11, r10, r0"); GC_push_one(TMP_SP);
-
- asm("cas r11, r12, r0"); GC_push_one(TMP_SP); /* r12 */
- asm("cas r11, r13, r0"); GC_push_one(TMP_SP); /* through */
- asm("cas r11, r14, r0"); GC_push_one(TMP_SP); /* r15 */
- asm("cas r11, r15, r0"); GC_push_one(TMP_SP);
-# endif
-
-# if defined(M68K) && defined(SYSV)
- /* Once again similar to SUN and HP, though setjmp appears to work.
- --Parag
- */
-# ifdef __GNUC__
- asm("subqw #0x4,%sp"); /* allocate word on top of stack */
-
- asm("movl %a2,%sp@"); asm("jbsr GC_push_one");
- asm("movl %a3,%sp@"); asm("jbsr GC_push_one");
- asm("movl %a4,%sp@"); asm("jbsr GC_push_one");
- asm("movl %a5,%sp@"); asm("jbsr GC_push_one");
- /* Skip frame pointer and stack pointer */
- asm("movl %d1,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d2,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d3,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d4,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d5,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d6,%sp@"); asm("jbsr GC_push_one");
- asm("movl %d7,%sp@"); asm("jbsr GC_push_one");
-
- asm("addqw #0x4,%sp"); /* put stack back where it was */
-# else /* !__GNUC__*/
- asm("subq.w &0x4,%sp"); /* allocate word on top of stack */
-
- asm("mov.l %a2,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %a3,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %a4,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %a5,(%sp)"); asm("jsr GC_push_one");
- /* Skip frame pointer and stack pointer */
- asm("mov.l %d1,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d2,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d3,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d4,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d5,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d6,(%sp)"); asm("jsr GC_push_one");
- asm("mov.l %d7,(%sp)"); asm("jsr GC_push_one");
-
- asm("addq.w &0x4,%sp"); /* put stack back where it was */
-# endif /* !__GNUC__ */
-# endif /* M68K/SYSV */
-
-# if defined(PJ)
- {
- register int * sp asm ("optop");
- extern int *__libc_stack_end;
-
- GC_push_all_stack (sp, __libc_stack_end);
- }
-# endif
-
- /* other machines... */
-# if !defined(M68K) && !defined(VAX) && !defined(RT)
-# if !defined(SPARC) && !defined(I386) && !defined(NS32K)
-# if !defined(POWERPC) && !defined(UTS4)
-# if !defined(PJ) && !(defined(MIPS) && defined(LINUX))
- --> bad news <--
-# endif
-# endif
-# endif
-# endif
-}
-#endif /* !USE_GENERIC_PUSH_REGS */
-
-#if defined(USE_GENERIC_PUSH_REGS)
-void GC_generic_push_regs(cold_gc_frame)
-ptr_t cold_gc_frame;
-{
- {
-# ifdef HAVE_BUILTIN_UNWIND_INIT
- /* This was suggested by Richard Henderson as the way to */
- /* force callee-save registers and register windows onto */
- /* the stack. */
- __builtin_unwind_init();
-# else /* !HAVE_BUILTIN_UNWIND_INIT */
- /* Generic code */
- /* The idea is due to Parag Patel at HP. */
- /* We're not sure whether he would like */
- /* to be he acknowledged for it or not. */
- jmp_buf regs;
- register word * i = (word *) regs;
- register ptr_t lim = (ptr_t)(regs) + (sizeof regs);
-
- /* Setjmp doesn't always clear all of the buffer. */
- /* That tends to preserve garbage. Clear it. */
- for (; (char *)i < lim; i++) {
- *i = 0;
- }
-# if defined(POWERPC) || defined(MSWIN32) || defined(MSWINCE) \
- || defined(UTS4) || defined(LINUX) || defined(EWS4800)
- (void) setjmp(regs);
-# else
- (void) _setjmp(regs);
-# endif
-# endif /* !HAVE_BUILTIN_UNWIND_INIT */
-# if (defined(SPARC) && !defined(HAVE_BUILTIN_UNWIND_INIT)) \
- || defined(IA64)
- /* On a register window machine, we need to save register */
- /* contents on the stack for this to work. The setjmp */
- /* is probably not needed on SPARC, since pointers are */
- /* only stored in windowed or scratch registers. It is */
- /* needed on IA64, since some non-windowed registers are */
- /* preserved. */
- {
- word GC_save_regs_in_stack();
-
- GC_save_regs_ret_val = GC_save_regs_in_stack();
- /* On IA64 gcc, could use __builtin_ia64_flushrs() and */
- /* __builtin_ia64_flushrs(). The latter will be done */
- /* implicitly by __builtin_unwind_init() for gcc3.0.1 */
- /* and later. */
- }
-# endif
- GC_push_current_stack(cold_gc_frame);
- }
-}
-#endif /* USE_GENERIC_PUSH_REGS */
-
-/* On register window machines, we need a way to force registers into */
-/* the stack. Return sp. */
-# ifdef SPARC
- asm(" .seg \"text\"");
-# ifdef SVR4
- asm(" .globl GC_save_regs_in_stack");
- asm("GC_save_regs_in_stack:");
- asm(" .type GC_save_regs_in_stack,#function");
-# else
- asm(" .globl _GC_save_regs_in_stack");
- asm("_GC_save_regs_in_stack:");
-# endif
-# if defined(__arch64__) || defined(__sparcv9)
- asm(" save %sp,-128,%sp");
- asm(" flushw");
- asm(" ret");
- asm(" restore %sp,2047+128,%o0");
-# else
- asm(" ta 0x3 ! ST_FLUSH_WINDOWS");
- asm(" retl");
- asm(" mov %sp,%o0");
-# endif
-# ifdef SVR4
- asm(" .GC_save_regs_in_stack_end:");
- asm(" .size GC_save_regs_in_stack,.GC_save_regs_in_stack_end-GC_save_regs_in_stack");
-# endif
-# ifdef LINT
- word GC_save_regs_in_stack() { return(0 /* sp really */);}
-# endif
-# endif
-
-/* On IA64, we also need to flush register windows. But they end */
-/* up on the other side of the stack segment. */
-/* Returns the backing store pointer for the register stack. */
-/* We now implement this as a separate assembly file, since inline */
-/* assembly code here doesn't work with either the Intel or HP */
-/* compilers. */
-# if 0
-# ifdef LINUX
- asm(" .text");
- asm(" .psr abi64");
- asm(" .psr lsb");
- asm(" .lsb");
- asm("");
- asm(" .text");
- asm(" .align 16");
- asm(" .global GC_save_regs_in_stack");
- asm(" .proc GC_save_regs_in_stack");
- asm("GC_save_regs_in_stack:");
- asm(" .body");
- asm(" flushrs");
- asm(" ;;");
- asm(" mov r8=ar.bsp");
- asm(" br.ret.sptk.few rp");
- asm(" .endp GC_save_regs_in_stack");
-# endif /* LINUX */
-# if 0 /* Other alternatives that don't work on HP/UX */
- word GC_save_regs_in_stack() {
-# if USE_BUILTINS
- __builtin_ia64_flushrs();
- return __builtin_ia64_bsp();
-# else
-# ifdef HPUX
- _asm(" flushrs");
- _asm(" ;;");
- _asm(" mov r8=ar.bsp");
- _asm(" br.ret.sptk.few rp");
-# else
- asm(" flushrs");
- asm(" ;;");
- asm(" mov r8=ar.bsp");
- asm(" br.ret.sptk.few rp");
-# endif
-# endif
- }
-# endif
-# endif
-
-/* GC_clear_stack_inner(arg, limit) clears stack area up to limit and */
-/* returns arg. Stack clearing is crucial on SPARC, so we supply */
-/* an assembly version that's more careful. Assumes limit is hotter */
-/* than sp, and limit is 8 byte aligned. */
-#if defined(ASM_CLEAR_CODE)
-#ifndef SPARC
- --> fix it
-#endif
-# ifdef SUNOS4
- asm(".globl _GC_clear_stack_inner");
- asm("_GC_clear_stack_inner:");
-# else
- asm(".globl GC_clear_stack_inner");
- asm("GC_clear_stack_inner:");
- asm(".type GC_save_regs_in_stack,#function");
-# endif
-#if defined(__arch64__) || defined(__sparcv9)
- asm("mov %sp,%o2"); /* Save sp */
- asm("add %sp,2047-8,%o3"); /* p = sp+bias-8 */
- asm("add %o1,-2047-192,%sp"); /* Move sp out of the way, */
- /* so that traps still work. */
- /* Includes some extra words */
- /* so we can be sloppy below. */
- asm("loop:");
- asm("stx %g0,[%o3]"); /* *(long *)p = 0 */
- asm("cmp %o3,%o1");
- asm("bgu,pt %xcc, loop"); /* if (p > limit) goto loop */
- asm("add %o3,-8,%o3"); /* p -= 8 (delay slot) */
- asm("retl");
- asm("mov %o2,%sp"); /* Restore sp., delay slot */
-#else
- asm("mov %sp,%o2"); /* Save sp */
- asm("add %sp,-8,%o3"); /* p = sp-8 */
- asm("clr %g1"); /* [g0,g1] = 0 */
- asm("add %o1,-0x60,%sp"); /* Move sp out of the way, */
- /* so that traps still work. */
- /* Includes some extra words */
- /* so we can be sloppy below. */
- asm("loop:");
- asm("std %g0,[%o3]"); /* *(long long *)p = 0 */
- asm("cmp %o3,%o1");
- asm("bgu loop "); /* if (p > limit) goto loop */
- asm("add %o3,-8,%o3"); /* p -= 8 (delay slot) */
- asm("retl");
- asm("mov %o2,%sp"); /* Restore sp., delay slot */
-#endif /* old SPARC */
- /* First argument = %o0 = return value */
-# ifdef SVR4
- asm(" .GC_clear_stack_inner_end:");
- asm(" .size GC_clear_stack_inner,.GC_clear_stack_inner_end-GC_clear_stack_inner");
-# endif
-
-# ifdef LINT
- /*ARGSUSED*/
- ptr_t GC_clear_stack_inner(arg, limit)
- ptr_t arg; word limit;
- { return(arg); }
-# endif
-#endif
projects / msp430-gcc.git / blobdiff