/
sparc_mach_dep.S
67 lines (57 loc) · 1.7 KB
/
sparc_mach_dep.S
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! SPARCompiler 3.0 and later apparently no longer handles
! asm outside functions. So we need a separate .s file
! This is only set up for SunOS 5, not SunOS 4.
! Assumes this is called before the stack contents are
! examined.
.seg "text"
.globl GC_save_regs_in_stack
.globl GC_push_regs
GC_save_regs_in_stack:
GC_push_regs:
#if defined(__arch64__) || defined(__sparcv9)
save %sp,-128,%sp
flushw
ret
restore %sp,2047+128,%o0
#else /* 32 bit SPARC */
ta 0x3 ! ST_FLUSH_WINDOWS
mov %sp,%o0
retl
nop
#endif /* 32 bit SPARC */
.GC_save_regs_in_stack_end:
.size GC_save_regs_in_stack,.GC_save_regs_in_stack_end-GC_save_regs_in_stack
.globl GC_clear_stack_inner
GC_clear_stack_inner:
#if defined(__arch64__) || defined(__sparcv9)
mov %sp,%o2 ! Save sp
add %sp,2047-8,%o3 ! p = sp+bias-8
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.
loop:
stx %g0,[%o3] ! *(long *)p = 0
cmp %o3,%o1
bgu,pt %xcc, loop ! if (p > limit) goto loop
add %o3,-8,%o3 ! p -= 8 (delay slot)
retl
mov %o2,%sp ! Restore sp., delay slot
#else /* 32 bit SPARC */
mov %sp,%o2 ! Save sp
add %sp,-8,%o3 ! p = sp-8
clr %g1 ! [g0,g1] = 0
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.
loop:
std %g0,[%o3] ! *(long long *)p = 0
cmp %o3,%o1
bgu loop ! if (p > limit) goto loop
add %o3,-8,%o3 ! p -= 8 (delay slot)
retl
mov %o2,%sp ! Restore sp., delay slot
#endif /* 32 bit SPARC */
.GC_clear_stack_inner_end:
.size GC_clear_stack_inner,.GC_clear_stack_inner_end-GC_clear_stack_inner