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cmd/internal/obj, runtime: add NOFRAME flag to suppress stack frame set up on ppc64x
Replace the confusing game where a frame size of $-8 would suppress the implicit setting up of a stack frame with a nice explicit flag. The code to set up the function prologue is still a little confusing but better than it was. Change-Id: I1d49278ff42c6bc734ebfb079998b32bc53f8d9a Reviewed-on: https://go-review.googlesource.com/15670 Reviewed-by: Minux Ma <minux@golang.org>
This commit is contained in:
parent
d0c9b40964
commit
45c06b27a4
@ -7,7 +7,7 @@
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#include "textflag.h"
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TEXT ·RewindAndSetgid(SB),NOSPLIT,$-8-0
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TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
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// Rewind stack pointer so anything that happens on the stack
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// will clobber the test pattern created by the caller
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ADD $(1024 * 8), R1
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@ -412,7 +412,7 @@ func span9(ctxt *obj.Link, cursym *obj.LSym) {
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return
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}
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ctxt.Cursym = cursym
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ctxt.Autosize = int32(p.To.Offset + 8)
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ctxt.Autosize = int32(p.To.Offset)
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if oprange[AANDN&obj.AMask].start == nil {
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buildop(ctxt)
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@ -124,6 +124,19 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
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p := cursym.Text
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textstksiz := p.To.Offset
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if textstksiz == -8 {
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// Compatibility hack.
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p.From3.Offset |= obj.NOFRAME
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textstksiz = 0
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}
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if textstksiz%8 != 0 {
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ctxt.Diag("frame size %d not a multiple of 8", textstksiz)
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}
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if p.From3.Offset&obj.NOFRAME != 0 {
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if textstksiz != 0 {
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ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
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}
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}
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cursym.Args = p.To.Val.(int32)
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cursym.Locals = int32(textstksiz)
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@ -314,13 +327,20 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
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case obj.ATEXT:
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mov = AMOVD
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aoffset = 0
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autosize = int32(textstksiz + 8)
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if (p.Mark&LEAF != 0) && autosize <= 8 {
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autosize = 0
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} else if autosize&4 != 0 {
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autosize += 4
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autosize = int32(textstksiz)
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if p.Mark&LEAF != 0 && autosize == 0 && p.From3.Offset&obj.NOFRAME == 0 {
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// A leaf function with no locals has no frame.
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p.From3.Offset |= obj.NOFRAME
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}
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p.To.Offset = int64(autosize) - 8
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if p.From3.Offset&obj.NOFRAME == 0 {
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// If there is a stack frame at all, it includes
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// space to save the LR.
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autosize += 8
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}
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p.To.Offset = int64(autosize)
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if p.From3.Offset&obj.NOSPLIT == 0 {
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p = stacksplit(ctxt, p, autosize) // emit split check
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@ -344,11 +364,9 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
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q.Spadj = +autosize
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}
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} else if cursym.Text.Mark&LEAF == 0 {
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if ctxt.Debugvlog != 0 {
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fmt.Fprintf(ctxt.Bso, "save suppressed in: %s\n", cursym.Name)
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ctxt.Bso.Flush()
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}
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// A very few functions that do not return to their caller
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// (e.g. gogo) are not identified as leaves but still have
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// no frame.
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cursym.Text.Mark |= LEAF
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}
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@ -39,4 +39,9 @@ const (
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// Allocate a word of thread local storage and store the offset from the
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// thread local base to the thread local storage in this variable.
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TLSBSS = 256
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// Do not insert instructions to allocate a stack frame for this function.
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// Only valid on functions that declare a frame size of 0.
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// TODO(mwhudson): only implemented for ppc64x at present.
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NOFRAME = 512
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)
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@ -85,19 +85,19 @@ nocgo:
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DATA runtime·mainPC+0(SB)/8,$runtime·main(SB)
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GLOBL runtime·mainPC(SB),RODATA,$8
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TEXT runtime·breakpoint(SB),NOSPLIT,$-8-0
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TEXT runtime·breakpoint(SB),NOSPLIT|NOFRAME,$0-0
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MOVD R0, 2(R0) // TODO: TD
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RET
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TEXT runtime·asminit(SB),NOSPLIT,$-8-0
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TEXT runtime·asminit(SB),NOSPLIT|NOFRAME,$0-0
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RET
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TEXT _cgo_reginit(SB),NOSPLIT,$-8-0
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TEXT _cgo_reginit(SB),NOSPLIT|NOFRAME,$0-0
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// crosscall_ppc64 and crosscall2 need to reginit, but can't
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// get at the 'runtime.reginit' symbol.
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BR runtime·reginit(SB)
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TEXT runtime·reginit(SB),NOSPLIT,$-8-0
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TEXT runtime·reginit(SB),NOSPLIT|NOFRAME,$0-0
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// set R0 to zero, it's expected by the toolchain
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XOR R0, R0
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// initialize essential FP registers
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@ -114,7 +114,7 @@ TEXT runtime·reginit(SB),NOSPLIT,$-8-0
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// void gosave(Gobuf*)
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// save state in Gobuf; setjmp
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TEXT runtime·gosave(SB), NOSPLIT, $-8-8
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TEXT runtime·gosave(SB), NOSPLIT|NOFRAME, $0-8
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MOVD buf+0(FP), R3
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MOVD R1, gobuf_sp(R3)
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MOVD LR, R31
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@ -127,7 +127,7 @@ TEXT runtime·gosave(SB), NOSPLIT, $-8-8
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// void gogo(Gobuf*)
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// restore state from Gobuf; longjmp
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TEXT runtime·gogo(SB), NOSPLIT, $-8-8
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TEXT runtime·gogo(SB), NOSPLIT|NOFRAME, $0-8
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MOVD buf+0(FP), R5
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MOVD gobuf_g(R5), g // make sure g is not nil
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BL runtime·save_g(SB)
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@ -151,7 +151,7 @@ TEXT runtime·gogo(SB), NOSPLIT, $-8-8
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// Switch to m->g0's stack, call fn(g).
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// Fn must never return. It should gogo(&g->sched)
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// to keep running g.
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TEXT runtime·mcall(SB), NOSPLIT, $-8-8
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TEXT runtime·mcall(SB), NOSPLIT|NOFRAME, $0-8
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// Save caller state in g->sched
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MOVD R1, (g_sched+gobuf_sp)(g)
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MOVD LR, R31
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@ -262,7 +262,7 @@ noswitch:
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// the top of a stack (for example, morestack calling newstack
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// calling the scheduler calling newm calling gc), so we must
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// record an argument size. For that purpose, it has no arguments.
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TEXT runtime·morestack(SB),NOSPLIT,$-8-0
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TEXT runtime·morestack(SB),NOSPLIT|NOFRAME,$0-0
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// Cannot grow scheduler stack (m->g0).
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MOVD g_m(g), R7
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MOVD m_g0(R7), R8
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@ -300,7 +300,7 @@ TEXT runtime·morestack(SB),NOSPLIT,$-8-0
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// is still in this function, and not the beginning of the next.
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UNDEF
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TEXT runtime·morestack_noctxt(SB),NOSPLIT,$-8-0
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TEXT runtime·morestack_noctxt(SB),NOSPLIT|NOFRAME,$0-0
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MOVD R0, R11
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BR runtime·morestack(SB)
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@ -340,7 +340,7 @@ TEXT runtime·stackBarrier(SB),NOSPLIT,$0
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TEXT reflect·call(SB), NOSPLIT, $0-0
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BR ·reflectcall(SB)
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TEXT ·reflectcall(SB), NOSPLIT, $-8-32
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TEXT ·reflectcall(SB), NOSPLIT|NOFRAME, $0-32
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MOVWZ argsize+24(FP), R3
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// NOTE(rsc): No call16, because CALLFN needs four words
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// of argument space to invoke callwritebarrier.
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@ -511,10 +511,10 @@ cas64_fail:
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TEXT runtime·casuintptr(SB), NOSPLIT, $0-25
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BR runtime·cas64(SB)
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TEXT runtime·atomicloaduintptr(SB), NOSPLIT, $-8-16
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TEXT runtime·atomicloaduintptr(SB), NOSPLIT|NOFRAME, $0-16
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BR runtime·atomicload64(SB)
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TEXT runtime·atomicloaduint(SB), NOSPLIT, $-8-16
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TEXT runtime·atomicloaduint(SB), NOSPLIT|NOFRAME, $0-16
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BR runtime·atomicload64(SB)
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TEXT runtime·atomicstoreuintptr(SB), NOSPLIT, $0-16
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@ -669,7 +669,7 @@ again:
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// 1. grab stored LR for caller
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// 2. sub 4 bytes to get back to BL deferreturn
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// 3. BR to fn
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TEXT runtime·jmpdefer(SB), NOSPLIT, $-8-16
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TEXT runtime·jmpdefer(SB), NOSPLIT|NOFRAME, $0-16
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MOVD 0(R1), R31
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SUB $4, R31
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MOVD R31, LR
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@ -682,7 +682,7 @@ TEXT runtime·jmpdefer(SB), NOSPLIT, $-8-16
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BR (CTR)
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// Save state of caller into g->sched. Smashes R31.
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TEXT gosave<>(SB),NOSPLIT,$-8
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TEXT gosave<>(SB),NOSPLIT|NOFRAME,$0
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MOVD LR, R31
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MOVD R31, (g_sched+gobuf_pc)(g)
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MOVD R1, (g_sched+gobuf_sp)(g)
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@ -873,7 +873,7 @@ TEXT runtime·setg(SB), NOSPLIT, $0-8
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// void setg_gcc(G*); set g in C TLS.
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// Must obey the gcc calling convention.
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TEXT setg_gcc<>(SB),NOSPLIT,$-8-0
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TEXT setg_gcc<>(SB),NOSPLIT|NOFRAME,$0-0
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// The standard prologue clobbers R31, which is callee-save in
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// the C ABI, so we have to use $-8-0 and save LR ourselves.
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MOVD LR, R4
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@ -921,7 +921,7 @@ TEXT runtime·getcallersp(SB),NOSPLIT,$0-16
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MOVD R3, ret+8(FP)
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RET
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TEXT runtime·abort(SB),NOSPLIT,$-8-0
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TEXT runtime·abort(SB),NOSPLIT|NOFRAME,$0-0
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MOVW (R0), R0
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UNDEF
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@ -958,16 +958,16 @@ TEXT runtime·memhash_varlen(SB),NOSPLIT,$40-24
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RET
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// AES hashing not implemented for ppc64
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TEXT runtime·aeshash(SB),NOSPLIT,$-8-0
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TEXT runtime·aeshash(SB),NOSPLIT|NOFRAME,$0-0
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MOVW (R0), R1
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TEXT runtime·aeshash32(SB),NOSPLIT,$-8-0
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TEXT runtime·aeshash32(SB),NOSPLIT|NOFRAME,$0-0
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MOVW (R0), R1
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TEXT runtime·aeshash64(SB),NOSPLIT,$-8-0
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TEXT runtime·aeshash64(SB),NOSPLIT|NOFRAME,$0-0
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MOVW (R0), R1
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TEXT runtime·aeshashstr(SB),NOSPLIT,$-8-0
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TEXT runtime·aeshashstr(SB),NOSPLIT|NOFRAME,$0-0
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MOVW (R0), R1
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TEXT runtime·memeq(SB),NOSPLIT,$-8-25
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TEXT runtime·memeq(SB),NOSPLIT|NOFRAME,$0-25
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MOVD a+0(FP), R3
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MOVD b+8(FP), R4
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MOVD size+16(FP), R5
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@ -1115,7 +1115,7 @@ notfound:
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MOVD R3, ret+24(FP)
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RET
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TEXT runtime·cmpstring(SB),NOSPLIT,$-4-40
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TEXT runtime·cmpstring(SB),NOSPLIT|NOFRAME,$0-40
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MOVD s1_base+0(FP), R5
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MOVD s1_len+8(FP), R3
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MOVD s2_base+16(FP), R6
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@ -1123,7 +1123,7 @@ TEXT runtime·cmpstring(SB),NOSPLIT,$-4-40
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MOVD $ret+32(FP), R7
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BR runtime·cmpbody<>(SB)
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TEXT bytes·Compare(SB),NOSPLIT,$-4-56
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TEXT bytes·Compare(SB),NOSPLIT|NOFRAME,$0-56
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MOVD s1+0(FP), R5
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MOVD s1+8(FP), R3
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MOVD s2+24(FP), R6
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@ -1140,7 +1140,7 @@ TEXT bytes·Compare(SB),NOSPLIT,$-4-56
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//
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// On exit:
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// R5, R6, R8, R9 and R10 are clobbered
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TEXT runtime·cmpbody<>(SB),NOSPLIT,$-4-0
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TEXT runtime·cmpbody<>(SB),NOSPLIT|NOFRAME,$0-0
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CMP R5, R6
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BEQ samebytes // same starting pointers; compare lengths
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SUB $1, R5
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@ -1191,7 +1191,7 @@ TEXT runtime·return0(SB), NOSPLIT, $0
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// Called from cgo wrappers, this function returns g->m->curg.stack.hi.
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// Must obey the gcc calling convention.
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TEXT _cgo_topofstack(SB),NOSPLIT,$-8
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TEXT _cgo_topofstack(SB),NOSPLIT|NOFRAME,$0
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// g (R30) and R31 are callee-save in the C ABI, so save them
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MOVD g, R4
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MOVD R31, R5
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@ -1209,7 +1209,7 @@ TEXT _cgo_topofstack(SB),NOSPLIT,$-8
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// The top-most function running on a goroutine
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// returns to goexit+PCQuantum.
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TEXT runtime·goexit(SB),NOSPLIT,$-8-0
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TEXT runtime·goexit(SB),NOSPLIT|NOFRAME,$0-0
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MOVD R0, R0 // NOP
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BL runtime·goexit1(SB) // does not return
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// traceback from goexit1 must hit code range of goexit
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@ -7,7 +7,7 @@
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#include "textflag.h"
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// uint32 runtime·atomicload(uint32 volatile* addr)
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TEXT ·atomicload(SB),NOSPLIT,$-8-12
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TEXT ·atomicload(SB),NOSPLIT|NOFRAME,$0-12
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MOVD addr+0(FP), R3
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SYNC
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MOVWZ 0(R3), R3
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@ -18,7 +18,7 @@ TEXT ·atomicload(SB),NOSPLIT,$-8-12
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RET
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// uint64 runtime·atomicload64(uint64 volatile* addr)
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TEXT ·atomicload64(SB),NOSPLIT,$-8-16
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TEXT ·atomicload64(SB),NOSPLIT|NOFRAME,$0-16
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MOVD addr+0(FP), R3
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SYNC
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MOVD 0(R3), R3
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@ -29,7 +29,7 @@ TEXT ·atomicload64(SB),NOSPLIT,$-8-16
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RET
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// void *runtime·atomicloadp(void *volatile *addr)
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TEXT ·atomicloadp(SB),NOSPLIT,$-8-16
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TEXT ·atomicloadp(SB),NOSPLIT|NOFRAME,$0-16
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MOVD addr+0(FP), R3
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SYNC
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MOVD 0(R3), R3
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@ -39,7 +39,7 @@ TEXT ·atomicloadp(SB),NOSPLIT,$-8-16
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MOVD R3, ret+8(FP)
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RET
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TEXT ·publicationBarrier(SB),NOSPLIT,$-8-0
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TEXT ·publicationBarrier(SB),NOSPLIT|NOFRAME,$0-0
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// LWSYNC is the "export" barrier recommended by Power ISA
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// v2.07 book II, appendix B.2.2.2.
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// LWSYNC is a load/load, load/store, and store/store barrier.
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@ -11,7 +11,7 @@
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* Save registers and call fn with two arguments.
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* crosscall2 obeys the C ABI; fn obeys the Go ABI.
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*/
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TEXT crosscall2(SB),NOSPLIT,$-8
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TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0
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// TODO(austin): ABI v1 (fn is probably a function descriptor)
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// Start with standard C stack frame layout and linkage
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@ -41,7 +41,7 @@ TEXT crosscall2(SB),NOSPLIT,$-8
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MOVD R0, LR
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RET
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TEXT saveregs2<>(SB),NOSPLIT,$-8
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TEXT saveregs2<>(SB),NOSPLIT|NOFRAME,$0
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// O=-288; for R in R{14..31}; do echo "\tMOVD\t$R, $O(R1)"|sed s/R30/g/; ((O+=8)); done; for F in F{14..31}; do echo "\tFMOVD\t$F, $O(R1)"; ((O+=8)); done
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MOVD R14, -288(R1)
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MOVD R15, -280(R1)
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@ -82,7 +82,7 @@ TEXT saveregs2<>(SB),NOSPLIT,$-8
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RET
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TEXT restoreregs2<>(SB),NOSPLIT,$-8
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TEXT restoreregs2<>(SB),NOSPLIT|NOFRAME,$0
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// O=-288; for R in R{14..31}; do echo "\tMOVD\t$O(R1), $R"|sed s/R30/g/; ((O+=8)); done; for F in F{14..31}; do echo "\tFMOVD\t$O(R1), $F"; ((O+=8)); done
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MOVD -288(R1), R14
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MOVD -280(R1), R15
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@ -6,7 +6,7 @@
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#include "textflag.h"
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TEXT runtime·duffzero(SB), NOSPLIT, $-8-0
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TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0
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MOVDU R0, 8(R3)
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MOVDU R0, 8(R3)
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MOVDU R0, 8(R3)
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@ -7,7 +7,7 @@
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#include "textflag.h"
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// void runtime·memclr(void*, uintptr)
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TEXT runtime·memclr(SB),NOSPLIT,$0-16
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TEXT runtime·memclr(SB),NOSPLIT|NOFRAME,$0-16
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MOVD ptr+0(FP), R3
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MOVD n+8(FP), R4
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SRADCC $3, R4, R6 // R6 is the number of words to zero
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@ -7,7 +7,7 @@
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#include "textflag.h"
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// void runtime·memmove(void*, void*, uintptr)
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TEXT runtime·memmove(SB), NOSPLIT, $-8-24
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TEXT runtime·memmove(SB), NOSPLIT|NOFRAME, $0-24
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MOVD to+0(FP), R3
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MOVD from+8(FP), R4
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MOVD n+16(FP), R5
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@ -173,11 +173,11 @@ func zeroPPC64x(w io.Writer) {
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// R0: always zero
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// R3 (aka REGRT1): ptr to memory to be zeroed - 8
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// On return, R3 points to the last zeroed dword.
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fmt.Fprintln(w, "TEXT runtime·duffzero(SB), NOSPLIT, $-8-0")
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fmt.Fprintln(w, "TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0")
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for i := 0; i < 128; i++ {
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fmt.Fprintln(w, "\tMOVDU\tR0, 8(R3)")
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}
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fmt.Fprintln(w, "\tRETURN")
|
||||
fmt.Fprintln(w, "\tRET")
|
||||
}
|
||||
|
||||
func copyPPC64x(w io.Writer) {
|
||||
|
@ -47,17 +47,17 @@
|
||||
#define SYS_clock_gettime 246
|
||||
#define SYS_epoll_create1 315
|
||||
|
||||
TEXT runtime·exit(SB),NOSPLIT,$-8-4
|
||||
TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0-4
|
||||
MOVW code+0(FP), R3
|
||||
SYSCALL $SYS_exit_group
|
||||
RET
|
||||
|
||||
TEXT runtime·exit1(SB),NOSPLIT,$-8-4
|
||||
TEXT runtime·exit1(SB),NOSPLIT|NOFRAME,$0-4
|
||||
MOVW code+0(FP), R3
|
||||
SYSCALL $SYS_exit
|
||||
RET
|
||||
|
||||
TEXT runtime·open(SB),NOSPLIT,$-8-20
|
||||
TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0-20
|
||||
MOVD name+0(FP), R3
|
||||
MOVW mode+8(FP), R4
|
||||
MOVW perm+12(FP), R5
|
||||
@ -67,7 +67,7 @@ TEXT runtime·open(SB),NOSPLIT,$-8-20
|
||||
MOVW R3, ret+16(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·closefd(SB),NOSPLIT,$-8-12
|
||||
TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12
|
||||
MOVW fd+0(FP), R3
|
||||
SYSCALL $SYS_close
|
||||
BVC 2(PC)
|
||||
@ -75,7 +75,7 @@ TEXT runtime·closefd(SB),NOSPLIT,$-8-12
|
||||
MOVW R3, ret+8(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·write(SB),NOSPLIT,$-8-28
|
||||
TEXT runtime·write(SB),NOSPLIT|NOFRAME,$0-28
|
||||
MOVD fd+0(FP), R3
|
||||
MOVD p+8(FP), R4
|
||||
MOVW n+16(FP), R5
|
||||
@ -85,7 +85,7 @@ TEXT runtime·write(SB),NOSPLIT,$-8-28
|
||||
MOVW R3, ret+24(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·read(SB),NOSPLIT,$-8-28
|
||||
TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28
|
||||
MOVW fd+0(FP), R3
|
||||
MOVD p+8(FP), R4
|
||||
MOVW n+16(FP), R5
|
||||
@ -95,7 +95,7 @@ TEXT runtime·read(SB),NOSPLIT,$-8-28
|
||||
MOVW R3, ret+24(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·getrlimit(SB),NOSPLIT,$-8-20
|
||||
TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0-20
|
||||
MOVW kind+0(FP), R3
|
||||
MOVD limit+8(FP), R4
|
||||
SYSCALL $SYS_ugetrlimit
|
||||
@ -126,28 +126,28 @@ TEXT runtime·gettid(SB),NOSPLIT,$0-4
|
||||
MOVW R3, ret+0(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·raise(SB),NOSPLIT,$-8
|
||||
TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0
|
||||
SYSCALL $SYS_gettid
|
||||
MOVW R3, R3 // arg 1 tid
|
||||
MOVW sig+0(FP), R4 // arg 2
|
||||
SYSCALL $SYS_tkill
|
||||
RET
|
||||
|
||||
TEXT runtime·raiseproc(SB),NOSPLIT,$-8
|
||||
TEXT runtime·raiseproc(SB),NOSPLIT|NOFRAME,$0
|
||||
SYSCALL $SYS_getpid
|
||||
MOVW R3, R3 // arg 1 pid
|
||||
MOVW sig+0(FP), R4 // arg 2
|
||||
SYSCALL $SYS_kill
|
||||
RET
|
||||
|
||||
TEXT runtime·setitimer(SB),NOSPLIT,$-8-24
|
||||
TEXT runtime·setitimer(SB),NOSPLIT|NOFRAME,$0-24
|
||||
MOVW mode+0(FP), R3
|
||||
MOVD new+8(FP), R4
|
||||
MOVD old+16(FP), R5
|
||||
SYSCALL $SYS_setitimer
|
||||
RET
|
||||
|
||||
TEXT runtime·mincore(SB),NOSPLIT,$-8-28
|
||||
TEXT runtime·mincore(SB),NOSPLIT|NOFRAME,$0-28
|
||||
MOVD addr+0(FP), R3
|
||||
MOVD n+8(FP), R4
|
||||
MOVD dst+16(FP), R5
|
||||
@ -182,7 +182,7 @@ TEXT runtime·nanotime(SB),NOSPLIT,$16
|
||||
MOVD R3, ret+0(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·rtsigprocmask(SB),NOSPLIT,$-8-28
|
||||
TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28
|
||||
MOVW sig+0(FP), R3
|
||||
MOVD new+8(FP), R4
|
||||
MOVD old+16(FP), R5
|
||||
@ -192,7 +192,7 @@ TEXT runtime·rtsigprocmask(SB),NOSPLIT,$-8-28
|
||||
MOVD R0, 0xf1(R0) // crash
|
||||
RET
|
||||
|
||||
TEXT runtime·rt_sigaction(SB),NOSPLIT,$-8-36
|
||||
TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36
|
||||
MOVD sig+0(FP), R3
|
||||
MOVD new+8(FP), R4
|
||||
MOVD old+16(FP), R5
|
||||
@ -215,7 +215,7 @@ TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
|
||||
TEXT runtime·sigtramp(SB),NOSPLIT,$64
|
||||
#else
|
||||
// function descriptor for the real sigtramp
|
||||
TEXT runtime·sigtramp(SB),NOSPLIT,$-8
|
||||
TEXT runtime·sigtramp(SB),NOSPLIT|NOFRAME,$0
|
||||
DWORD $runtime·_sigtramp(SB)
|
||||
DWORD $0
|
||||
DWORD $0
|
||||
@ -239,7 +239,7 @@ TEXT runtime·_sigtramp(SB),NOSPLIT,$64
|
||||
BL (CTR)
|
||||
RET
|
||||
|
||||
TEXT runtime·mmap(SB),NOSPLIT,$-8
|
||||
TEXT runtime·mmap(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD addr+0(FP), R3
|
||||
MOVD n+8(FP), R4
|
||||
MOVW prot+16(FP), R5
|
||||
@ -251,7 +251,7 @@ TEXT runtime·mmap(SB),NOSPLIT,$-8
|
||||
MOVD R3, ret+32(FP)
|
||||
RET
|
||||
|
||||
TEXT runtime·munmap(SB),NOSPLIT,$-8
|
||||
TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD addr+0(FP), R3
|
||||
MOVD n+8(FP), R4
|
||||
SYSCALL $SYS_munmap
|
||||
@ -259,7 +259,7 @@ TEXT runtime·munmap(SB),NOSPLIT,$-8
|
||||
MOVD R0, 0xf3(R0)
|
||||
RET
|
||||
|
||||
TEXT runtime·madvise(SB),NOSPLIT,$-8
|
||||
TEXT runtime·madvise(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD addr+0(FP), R3
|
||||
MOVD n+8(FP), R4
|
||||
MOVW flags+16(FP), R5
|
||||
@ -269,7 +269,7 @@ TEXT runtime·madvise(SB),NOSPLIT,$-8
|
||||
|
||||
// int64 futex(int32 *uaddr, int32 op, int32 val,
|
||||
// struct timespec *timeout, int32 *uaddr2, int32 val2);
|
||||
TEXT runtime·futex(SB),NOSPLIT,$-8
|
||||
TEXT runtime·futex(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD addr+0(FP), R3
|
||||
MOVW op+8(FP), R4
|
||||
MOVW val+12(FP), R5
|
||||
@ -281,7 +281,7 @@ TEXT runtime·futex(SB),NOSPLIT,$-8
|
||||
RET
|
||||
|
||||
// int64 clone(int32 flags, void *stk, M *mp, G *gp, void (*fn)(void));
|
||||
TEXT runtime·clone(SB),NOSPLIT,$-8
|
||||
TEXT runtime·clone(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW flags+0(FP), R3
|
||||
MOVD stk+8(FP), R4
|
||||
|
||||
@ -344,7 +344,7 @@ nog:
|
||||
SYSCALL $SYS_exit
|
||||
BR -2(PC) // keep exiting
|
||||
|
||||
TEXT runtime·sigaltstack(SB),NOSPLIT,$-8
|
||||
TEXT runtime·sigaltstack(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD new+0(FP), R3
|
||||
MOVD old+8(FP), R4
|
||||
SYSCALL $SYS_sigaltstack
|
||||
@ -352,11 +352,11 @@ TEXT runtime·sigaltstack(SB),NOSPLIT,$-8
|
||||
MOVD R0, 0xf1(R0) // crash
|
||||
RET
|
||||
|
||||
TEXT runtime·osyield(SB),NOSPLIT,$-8
|
||||
TEXT runtime·osyield(SB),NOSPLIT|NOFRAME,$0
|
||||
SYSCALL $SYS_sched_yield
|
||||
RET
|
||||
|
||||
TEXT runtime·sched_getaffinity(SB),NOSPLIT,$-8
|
||||
TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVD pid+0(FP), R3
|
||||
MOVD len+8(FP), R4
|
||||
MOVD buf+16(FP), R5
|
||||
@ -365,21 +365,21 @@ TEXT runtime·sched_getaffinity(SB),NOSPLIT,$-8
|
||||
RET
|
||||
|
||||
// int32 runtime·epollcreate(int32 size);
|
||||
TEXT runtime·epollcreate(SB),NOSPLIT,$-8
|
||||
TEXT runtime·epollcreate(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW size+0(FP), R3
|
||||
SYSCALL $SYS_epoll_create
|
||||
MOVW R3, ret+8(FP)
|
||||
RET
|
||||
|
||||
// int32 runtime·epollcreate1(int32 flags);
|
||||
TEXT runtime·epollcreate1(SB),NOSPLIT,$-8
|
||||
TEXT runtime·epollcreate1(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW flags+0(FP), R3
|
||||
SYSCALL $SYS_epoll_create1
|
||||
MOVW R3, ret+8(FP)
|
||||
RET
|
||||
|
||||
// func epollctl(epfd, op, fd int32, ev *epollEvent) int
|
||||
TEXT runtime·epollctl(SB),NOSPLIT,$-8
|
||||
TEXT runtime·epollctl(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW epfd+0(FP), R3
|
||||
MOVW op+4(FP), R4
|
||||
MOVW fd+8(FP), R5
|
||||
@ -389,7 +389,7 @@ TEXT runtime·epollctl(SB),NOSPLIT,$-8
|
||||
RET
|
||||
|
||||
// int32 runtime·epollwait(int32 epfd, EpollEvent *ev, int32 nev, int32 timeout);
|
||||
TEXT runtime·epollwait(SB),NOSPLIT,$-8
|
||||
TEXT runtime·epollwait(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW epfd+0(FP), R3
|
||||
MOVD ev+8(FP), R4
|
||||
MOVW nev+16(FP), R5
|
||||
@ -399,7 +399,7 @@ TEXT runtime·epollwait(SB),NOSPLIT,$-8
|
||||
RET
|
||||
|
||||
// void runtime·closeonexec(int32 fd);
|
||||
TEXT runtime·closeonexec(SB),NOSPLIT,$-8
|
||||
TEXT runtime·closeonexec(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW fd+0(FP), R3 // fd
|
||||
MOVD $2, R4 // F_SETFD
|
||||
MOVD $1, R5 // FD_CLOEXEC
|
||||
|
@ -24,3 +24,7 @@
|
||||
// Allocate a word of thread local storage and store the offset from the
|
||||
// thread local base to the thread local storage in this variable.
|
||||
#define TLSBSS 256
|
||||
// Do not insert instructions to allocate a stack frame for this function.
|
||||
// Only valid on functions that declare a frame size of 0.
|
||||
// TODO(mwhudson): only implemented for ppc64x at present.
|
||||
#define NOFRAME 512
|
||||
|
@ -22,7 +22,7 @@
|
||||
// If !iscgo, this is a no-op.
|
||||
//
|
||||
// NOTE: setg_gcc<> assume this clobbers only R31.
|
||||
TEXT runtime·save_g(SB),NOSPLIT,$-8-0
|
||||
TEXT runtime·save_g(SB),NOSPLIT|NOFRAME,$0-0
|
||||
MOVB runtime·iscgo(SB), R31
|
||||
CMP R31, $0
|
||||
BEQ nocgo
|
||||
@ -50,7 +50,7 @@ nocgo:
|
||||
// usual Go registers aren't set up.
|
||||
//
|
||||
// NOTE: _cgo_topofstack assumes this only clobbers g (R30), and R31.
|
||||
TEXT runtime·load_g(SB),NOSPLIT,$-8-0
|
||||
TEXT runtime·load_g(SB),NOSPLIT|NOFRAME,$0-0
|
||||
MOVD $runtime·tls_g(SB), R31
|
||||
// R13 is the C ABI TLS base pointer + 0x7000
|
||||
ADD R13, R31
|
||||
|
Loading…
Reference in New Issue
Block a user