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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
| commit | ccd992355df7192993c666236047820244914598 (patch) | |
| tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/rt0_linux_loong64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip | |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/rt0_linux_loong64.s')
| -rw-r--r-- | src/runtime/rt0_linux_loong64.s | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/runtime/rt0_linux_loong64.s b/src/runtime/rt0_linux_loong64.s new file mode 100644 index 0000000..b52f7d5 --- /dev/null +++ b/src/runtime/rt0_linux_loong64.s @@ -0,0 +1,72 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" +#include "cgo/abi_loong64.h" + +TEXT _rt0_loong64_linux(SB),NOSPLIT|NOFRAME,$0 + // In a statically linked binary, the stack contains argc, + // argv as argc string pointers followed by a NULL, envv as a + // sequence of string pointers followed by a NULL, and auxv. + // There is no TLS base pointer. + MOVW 0(R3), R4 // argc + ADDV $8, R3, R5 // argv + JMP main(SB) + +// When building with -buildmode=c-shared, this symbol is called when the shared +// library is loaded. +TEXT _rt0_loong64_linux_lib(SB),NOSPLIT,$168 + // Preserve callee-save registers. + SAVE_R22_TO_R31(3*8) + SAVE_F24_TO_F31(13*8) + + // Initialize g as nil in case of using g later e.g. sigaction in cgo_sigaction.go + MOVV R0, g + + MOVV R4, _rt0_loong64_linux_lib_argc<>(SB) + MOVV R5, _rt0_loong64_linux_lib_argv<>(SB) + + // Synchronous initialization. + MOVV $runtime·libpreinit(SB), R19 + JAL (R19) + + // Create a new thread to do the runtime initialization and return. + MOVV _cgo_sys_thread_create(SB), R19 + BEQ R19, nocgo + MOVV $_rt0_loong64_linux_lib_go(SB), R4 + MOVV $0, R5 + JAL (R19) + JMP restore + +nocgo: + MOVV $0x800000, R4 // stacksize = 8192KB + MOVV $_rt0_loong64_linux_lib_go(SB), R5 + MOVV R4, 8(R3) + MOVV R5, 16(R3) + MOVV $runtime·newosproc0(SB), R19 + JAL (R19) + +restore: + // Restore callee-save registers. + RESTORE_R22_TO_R31(3*8) + RESTORE_F24_TO_F31(13*8) + RET + +TEXT _rt0_loong64_linux_lib_go(SB),NOSPLIT,$0 + MOVV _rt0_loong64_linux_lib_argc<>(SB), R4 + MOVV _rt0_loong64_linux_lib_argv<>(SB), R5 + MOVV $runtime·rt0_go(SB),R19 + JMP (R19) + +DATA _rt0_loong64_linux_lib_argc<>(SB)/8, $0 +GLOBL _rt0_loong64_linux_lib_argc<>(SB),NOPTR, $8 +DATA _rt0_loong64_linux_lib_argv<>(SB)/8, $0 +GLOBL _rt0_loong64_linux_lib_argv<>(SB),NOPTR, $8 + +TEXT main(SB),NOSPLIT|NOFRAME,$0 + // in external linking, glibc jumps to main with argc in R4 + // and argv in R5 + + MOVV $runtime·rt0_go(SB), R19 + JMP (R19) |