github.com/code-reading/golang@v0.0.0-20220303082512-ba5bc0e589a3/go/src/runtime/rt0_linux_mips64x.s (about) 1 // Copyright 2015 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build linux && (mips64 || mips64le) 6 // +build linux 7 // +build mips64 mips64le 8 9 #include "textflag.h" 10 11 TEXT _rt0_mips64_linux(SB),NOSPLIT,$0 12 JMP _main<>(SB) 13 14 TEXT _rt0_mips64le_linux(SB),NOSPLIT,$0 15 JMP _main<>(SB) 16 17 TEXT _main<>(SB),NOSPLIT|NOFRAME,$0 18 // In a statically linked binary, the stack contains argc, 19 // argv as argc string pointers followed by a NULL, envv as a 20 // sequence of string pointers followed by a NULL, and auxv. 21 // There is no TLS base pointer. 22 #ifdef GOARCH_mips64 23 MOVW 4(R29), R4 // argc, big-endian ABI places int32 at offset 4 24 #else 25 MOVW 0(R29), R4 // argc 26 #endif 27 ADDV $8, R29, R5 // argv 28 JMP main(SB) 29 30 TEXT main(SB),NOSPLIT|NOFRAME,$0 31 // in external linking, glibc jumps to main with argc in R4 32 // and argv in R5 33 34 // initialize REGSB = PC&0xffffffff00000000 35 BGEZAL R0, 1(PC) 36 SRLV $32, R31, RSB 37 SLLV $32, RSB 38 39 MOVV $runtime·rt0_go(SB), R1 40 JMP (R1)