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| author | David Crawshaw <crawshaw@golang.org> | 2015-07-20 12:33:39 -0400 |
|---|---|---|
| committer | David Crawshaw <crawshaw@golang.org> | 2015-10-02 11:45:52 +0000 |
| commit | 47ccf96a9581c3db8ed5dbcb2a6318e8b9566557 (patch) | |
| tree | c98a129af0dd16e09a91859097fc93567cbe8a22 /src | |
| parent | 2c911143fda5f9d1aa46d02cc80bd60f9ba17775 (diff) | |
| download | go-47ccf96a9581c3db8ed5dbcb2a6318e8b9566557.tar.xz | |
runtime: darwin/386 entrypoint for c-archive
Change-Id: Ic22597b5e2824cffe9598cb9b506af3426c285fd
Reviewed-on: https://go-review.googlesource.com/12412
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/dist/test.go | 2 | ||||
| -rw-r--r-- | src/cmd/link/internal/ld/macho.go | 2 | ||||
| -rw-r--r-- | src/runtime/rt0_darwin_386.s | 55 |
3 files changed, 57 insertions, 2 deletions
diff --git a/src/cmd/dist/test.go b/src/cmd/dist/test.go index 858ad58dd3..0afe4c6060 100644 --- a/src/cmd/dist/test.go +++ b/src/cmd/dist/test.go @@ -573,7 +573,7 @@ func (t *tester) supportedBuildmode(mode string) bool { return false } switch pair { - case "darwin-amd64", "darwin-arm", "darwin-arm64", + case "darwin-386", "darwin-amd64", "darwin-arm", "darwin-arm64", "linux-amd64", "linux-386": return true } diff --git a/src/cmd/link/internal/ld/macho.go b/src/cmd/link/internal/ld/macho.go index c02b83f3fc..af93361000 100644 --- a/src/cmd/link/internal/ld/macho.go +++ b/src/cmd/link/internal/ld/macho.go @@ -444,7 +444,7 @@ func Asmbmacho() { ms = newMachoSeg("", 40) ms.fileoffset = Segtext.Fileoff - if Thearch.Thechar == '5' { + if Thearch.Thechar == '5' || Buildmode == BuildmodeCArchive { ms.filesize = Segdata.Fileoff + Segdata.Filelen - Segtext.Fileoff } else { ms.filesize = Segdwarf.Fileoff + Segdwarf.Filelen - Segtext.Fileoff diff --git a/src/runtime/rt0_darwin_386.s b/src/runtime/rt0_darwin_386.s index 4c8c92dda8..be2e5640ed 100644 --- a/src/runtime/rt0_darwin_386.s +++ b/src/runtime/rt0_darwin_386.s @@ -12,5 +12,60 @@ TEXT _rt0_386_darwin(SB),NOSPLIT,$8 CALL main(SB) INT $3 +// With -buildmode=c-archive, this symbol is called from a global constructor. +TEXT _rt0_386_darwin_lib(SB),NOSPLIT,$0 + PUSHL BP + MOVL SP, BP + PUSHL BX + PUSHL SI + PUSHL DI + + MOVL 8(BP), AX + MOVL AX, _rt0_386_darwin_lib_argc<>(SB) + MOVL 12(BP), AX + MOVL AX, _rt0_386_darwin_lib_argv<>(SB) + + SUBL $12, SP + + // Create a new thread to do the runtime initialization and return. + MOVL _cgo_sys_thread_create(SB), AX + TESTL AX, AX + JZ nocgo + MOVL $_rt0_386_darwin_lib_go(SB), BX + MOVL BX, 0(SP) + MOVL $0, 4(SP) + CALL AX + JMP restore + +nocgo: + MOVL $0x800000, 0(SP) // stacksize = 8192KB + MOVL $_rt0_386_darwin_lib_go(SB), AX + MOVL AX, 4(SP) // fn + MOVL $0, 8(SP) // fnarg + MOVL $runtime·newosproc0(SB), AX + CALL AX + +restore: + ADDL $12, SP + POPL DI + POPL SI + POPL BX + POPL BP + RET + +TEXT _rt0_386_darwin_lib_go(SB),NOSPLIT,$12 + MOVL _rt0_386_darwin_lib_argc<>(SB), AX + MOVL AX, 0(SP) + MOVL _rt0_386_darwin_lib_argv<>(SB), AX + MOVL AX, 4(SP) + MOVL $runtime·rt0_go(SB), AX + CALL AX + RET + +DATA _rt0_386_darwin_lib_argc<>(SB)/4, $0 +GLOBL _rt0_386_darwin_lib_argc<>(SB),NOPTR, $4 +DATA _rt0_386_darwin_lib_argv<>(SB)/4, $0 +GLOBL _rt0_386_darwin_lib_argv<>(SB),NOPTR, $4 + TEXT main(SB),NOSPLIT,$0 JMP runtime·rt0_go(SB) |