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[e90b2f]: src / gc-unstable / sparc_sunos4_mach_dep.s Maximize Restore History

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sparc_sunos4_mach_dep.s    39 lines (30 with data), 847 Bytes

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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 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:
ta 0x3 ! ST_FLUSH_WINDOWS
mov %sp,%o0
retl
nop
.globl _GC_clear_stack_inner
_GC_clear_stack_inner:
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