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| author | qmuntal <quimmuntal@gmail.com> | 2025-09-24 10:34:25 +0200 |
|---|---|---|
| committer | Quim Muntal <quimmuntal@gmail.com> | 2025-09-30 23:52:53 -0700 |
| commit | eb1c7f6e69b0e62067ff22a0656cedff792c8438 (patch) | |
| tree | 7e30fafed9132ac8f2d96cc4db8bacb99620358b /src/runtime | |
| parent | c9257151e5600af10cdd6c6db907ed83811a54a4 (diff) | |
| download | go-eb1c7f6e69b0e62067ff22a0656cedff792c8438.tar.xz | |
runtime: move loong64 library entry point to os-agnostic file
The library entry point for loong64 is agnostic to the OS, so move it to
asm_loong64.s. This is similar to what we do for other architectures.
Cq-Include-Trybots: luci.golang.try:gotip-linux-loong64
Change-Id: I6915eb76d3ea72a779e05e78d85f24793169c61f
Reviewed-on: https://go-review.googlesource.com/c/go/+/706416
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/asm_loong64.s | 51 | ||||
| -rw-r--r-- | src/runtime/rt0_linux_loong64.s | 50 |
2 files changed, 53 insertions, 48 deletions
diff --git a/src/runtime/asm_loong64.s b/src/runtime/asm_loong64.s index ee7f825e1f..586bf89a5d 100644 --- a/src/runtime/asm_loong64.s +++ b/src/runtime/asm_loong64.s @@ -6,6 +6,57 @@ #include "go_tls.h" #include "funcdata.h" #include "textflag.h" +#include "cgo/abi_loong64.h" + +// When building with -buildmode=c-shared, this symbol is called when the shared +// library is loaded. +TEXT _rt0_loong64_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_lib_argc<>(SB) + MOVV R5, _rt0_loong64_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_lib_go(SB), R4 + MOVV $0, R5 + JAL (R19) + JMP restore + +nocgo: + MOVV $0x800000, R4 // stacksize = 8192KB + MOVV $_rt0_loong64_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_lib_go(SB),NOSPLIT,$0 + MOVV _rt0_loong64_lib_argc<>(SB), R4 + MOVV _rt0_loong64_lib_argv<>(SB), R5 + MOVV $runtime·rt0_go(SB),R19 + JMP (R19) + +DATA _rt0_loong64_lib_argc<>(SB)/8, $0 +GLOBL _rt0_loong64_lib_argc<>(SB),NOPTR, $8 +DATA _rt0_loong64_lib_argv<>(SB)/8, $0 +GLOBL _rt0_loong64_lib_argv<>(SB),NOPTR, $8 #define REGCTXT R29 diff --git a/src/runtime/rt0_linux_loong64.s b/src/runtime/rt0_linux_loong64.s index b52f7d530a..d8da4461a2 100644 --- a/src/runtime/rt0_linux_loong64.s +++ b/src/runtime/rt0_linux_loong64.s @@ -3,7 +3,6 @@ // 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, @@ -16,53 +15,8 @@ TEXT _rt0_loong64_linux(SB),NOSPLIT|NOFRAME,$0 // 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 _rt0_loong64_linux_lib(SB),NOSPLIT,$0 + JMP _rt0_loong64_lib(SB) TEXT main(SB),NOSPLIT|NOFRAME,$0 // in external linking, glibc jumps to main with argc in R4 |