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runtime: add -buildmode=c-archive/c-shared support for linux/386

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Change-Id: I87147ca6bb53e3121cc4245449c519509f107638
Reviewed-on: https://go-review.googlesource.com/9009
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Ian Lance Taylor 2015-04-17 11:38:58 -07:00
parent 17228f44b2
commit 9c1868d06d
2 changed files with 42 additions and 1 deletions
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2
src/cmd/dist/test.go vendored
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@ -378,7 +378,7 @@ func (t *tester) buildmode(mode string) bool {
case t.goos == "darwin" && t.goarch == "amd64":
// TODO(crawshaw): add darwin/arm{,64}
return true
case t.goos == "linux" && t.goarch == "amd64":
case t.goos == "linux" && (t.goarch == "amd64" || t.goarch == "386"):
return true
default:
return false

41
src/runtime/rt0_linux_386.s
View File

@ -12,6 +12,47 @@ TEXT _rt0_386_linux(SB),NOSPLIT,$8
CALL main(SB)
INT $3
// When building with -buildmode=c-shared, this symbol is called when the shared
// library is loaded.
TEXT _rt0_386_linux_lib(SB),NOSPLIT,$12
MOVL 16(SP), AX
MOVL AX, _rt0_386_linux_lib_argc<>(SB)
MOVL 20(SP), AX
MOVL AX, _rt0_386_linux_lib_argv<>(SB)
// Create a new thread to do the runtime initialization.
MOVL _cgo_sys_thread_create(SB), AX
TESTL AX, AX
JZ nocgo
MOVL $_rt0_386_linux_lib_go(SB), BX
MOVL BX, 0(SP)
MOVL $0, 4(SP)
CALL AX
RET
nocgo:
MOVL $0x800000, 0(SP) // stacksize = 8192KB
MOVL $_rt0_386_linux_lib_go(SB), AX
MOVL AX, 4(SP) // fn
MOVL $0, 8(SP) // fnarg
MOVL $runtime·newosproc0(SB), AX
CALL AX
RET
TEXT _rt0_386_linux_lib_go(SB),NOSPLIT,$12
MOVL _rt0_386_linux_lib_argc<>(SB), AX
MOVL AX, 0(SP)
MOVL _rt0_386_linux_lib_argv<>(SB), AX
MOVL AX, 4(SP)
MOVL $runtime·rt0_go(SB), AX
CALL AX
RET
DATA _rt0_386_linux_lib_argc<>(SB)/4, $0
GLOBL _rt0_386_linux_lib_argc<>(SB),NOPTR, $4
DATA _rt0_386_linux_lib_argv<>(SB)/4, $0
GLOBL _rt0_386_linux_lib_argv<>(SB),NOPTR, $4
TEXT main(SB),NOSPLIT,$0
JMP runtime·rt0_go(SB)