diff options
Diffstat (limited to 'gcc-4.4.0/boehm-gc/mach_dep.c')
| -rw-r--r-- | gcc-4.4.0/boehm-gc/mach_dep.c | 627 |
1 files changed, 0 insertions, 627 deletions
diff --git a/gcc-4.4.0/boehm-gc/mach_dep.c b/gcc-4.4.0/boehm-gc/mach_dep.c deleted file mode 100644 index ba1e0b6fe..000000000 --- a/gcc-4.4.0/boehm-gc/mach_dep.c +++ /dev/null @@ -1,627 +0,0 @@ -/* - * 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(RS6000) || defined(POWERPC) -# include <ucontext.h> -#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. */ - -#if !defined(USE_GENERIC_PUSH_REGS) && !defined(USE_ASM_PUSH_REGS) -#undef HAVE_PUSH_REGS -void GC_push_regs() -{ -# ifdef RT - register long TMP_SP; /* must be bound to r11 */ -# endif - -# 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"); -# define HAVE_PUSH_REGS -# 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 */ -# define HAVE_PUSH_REGS -# 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 */ -# define HAVE_PUSH_REGS -# 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 */ -# define HAVE_PUSH_REGS -# 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)); -# define HAVE_PUSH_REGS -# 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. - } -# define HAVE_PUSH_REGS -# undef PushMacReg -# endif /* THINK_C */ -# if defined(__MWERKS__) - PushMacRegisters(); -# define HAVE_PUSH_REGS -# 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"); -# define HAVE_PUSH_REGS -# 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__) ) \ - || ( defined(I386) && defined(DGUX) ) - - /* 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"); -# define HAVE_PUSH_REGS -# 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"); -# define HAVE_PUSH_REGS -# 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 -# define HAVE_PUSH_REGS -# 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"); -# define HAVE_PUSH_REGS -# 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"); -# define HAVE_PUSH_REGS -# endif - -# if defined(SPARC) - GC_save_regs_ret_val = GC_save_regs_in_stack(); -# define HAVE_PUSH_REGS -# 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); -# define HAVE_PUSH_REGS -# 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 */ -# define HAVE_PUSH_REGS -# 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 */ -# define HAVE_PUSH_REGS -# 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); -# define HAVE_PUSH_REGS - /* Isn't this redundant with the code to push the stack? */ - } -# endif - - /* other machines... */ -# if !defined(HAVE_PUSH_REGS) - --> We just generated an empty GC_push_regs, which - --> is almost certainly broken. Try defining - --> USE_GENERIC_PUSH_REGS instead. -# endif -} -#endif /* !USE_GENERIC_PUSH_REGS && !USE_ASM_PUSH_REGS */ - -void GC_with_callee_saves_pushed(fn, arg) -void (*fn)(); -ptr_t arg; -{ - word dummy; - -# if defined(USE_GENERIC_PUSH_REGS) -# 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 */ -# if defined(RS6000) || defined(POWERPC) - /* FIXME: RS6000 means AIX. */ - /* This should probably be used in all Posix/non-gcc */ - /* settings. We defer that change to minimize risk. */ - ucontext_t ctxt; - getcontext(&ctxt); -# else - /* 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(MSWIN32) || defined(MSWINCE) \ - || defined(UTS4) || defined(LINUX) || defined(EWS4800) - (void) setjmp(regs); -# else - (void) _setjmp(regs); - /* We don't want to mess with signals. According to */ - /* SUSV3, setjmp() may or may not save signal mask. */ - /* _setjmp won't, but is less portable. */ -# endif -# endif /* !AIX ... */ -# endif /* !HAVE_BUILTIN_UNWIND_INIT */ -# else -# if defined(PTHREADS) && !defined(MSWIN32) /* !USE_GENERIC_PUSH_REGS */ - /* We may still need this to save thread contexts. */ - ucontext_t ctxt; - getcontext(&ctxt); -# else /* Shouldn't be needed */ - ABORT("Unexpected call to GC_with_callee_saves_pushed"); -# endif -# endif -# 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. */ - { - 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 - fn(arg); - /* Strongly discourage the compiler from treating the above */ - /* as a tail-call, since that would pop the register */ - /* contents before we get a chance to look at them. */ - GC_noop1((word)(&dummy)); -} - -#if defined(USE_GENERIC_PUSH_REGS) -void GC_generic_push_regs(cold_gc_frame) -ptr_t cold_gc_frame; -{ - GC_with_callee_saves_pushed(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\""); -# if defined(SVR4) || defined(NETBSD) || defined(FREEBSD) - 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 |