| // 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) |