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runtime: remove tracebackinit and unused skipPC
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@ -11,24 +11,3 @@
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DATA runtime·no_pointers_stackmap+0x00(SB)/4, $2
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DATA runtime·no_pointers_stackmap+0x04(SB)/4, $0
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GLOBL runtime·no_pointers_stackmap(SB),RODATA, $8
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// NaCl requires that these skips be verifiable machine code.
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#ifdef GOARCH_amd64
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#define SKIP4 BYTE $0x90; BYTE $0x90; BYTE $0x90; BYTE $0x90
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#endif
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#ifdef GOARCH_386
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#define SKIP4 BYTE $0x90; BYTE $0x90; BYTE $0x90; BYTE $0x90
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#endif
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#ifdef GOARCH_wasm
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#define SKIP4 UNDEF; UNDEF; UNDEF; UNDEF
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#endif
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#ifndef SKIP4
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#define SKIP4 WORD $0
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#endif
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#define SKIP16 SKIP4; SKIP4; SKIP4; SKIP4
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#define SKIP64 SKIP16; SKIP16; SKIP16; SKIP16
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// This function must be sizeofSkipFunction bytes.
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TEXT runtime·skipPleaseUseCallersFrames(SB),NOSPLIT,$0-0
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SKIP64; SKIP64; SKIP64; SKIP64
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@ -557,7 +557,6 @@ func schedinit() {
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sched.maxmcount = 10000
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tracebackinit()
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moduledataverify()
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stackinit()
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mallocinit()
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@ -35,16 +35,6 @@ import (
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const usesLR = sys.MinFrameSize > 0
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var skipPC uintptr
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func tracebackinit() {
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// Go variable initialization happens late during runtime startup.
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// Instead of initializing the variables above in the declarations,
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// schedinit calls this function so that the variables are
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// initialized and available earlier in the startup sequence.
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skipPC = funcPC(skipPleaseUseCallersFrames)
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}
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// Traceback over the deferred function calls.
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// Report them like calls that have been invoked but not started executing yet.
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func tracebackdefers(gp *g, callback func(*stkframe, unsafe.Pointer) bool, v unsafe.Pointer) {
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@ -82,9 +72,6 @@ func tracebackdefers(gp *g, callback func(*stkframe, unsafe.Pointer) bool, v uns
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const sizeofSkipFunction = 256
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// This function is defined in asm.s to be sizeofSkipFunction bytes long.
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func skipPleaseUseCallersFrames()
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// Generic traceback. Handles runtime stack prints (pcbuf == nil),
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// the runtime.Callers function (pcbuf != nil), as well as the garbage
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// collector (callback != nil). A little clunky to merge these, but avoids
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