From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- src/runtime/sys_linux_mips64x.s | 645 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 645 insertions(+) create mode 100644 src/runtime/sys_linux_mips64x.s (limited to 'src/runtime/sys_linux_mips64x.s') diff --git a/src/runtime/sys_linux_mips64x.s b/src/runtime/sys_linux_mips64x.s new file mode 100644 index 0000000..c3e9f37 --- /dev/null +++ b/src/runtime/sys_linux_mips64x.s @@ -0,0 +1,645 @@ +// Copyright 2015 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. + +// +build linux +// +build mips64 mips64le + +// +// System calls and other sys.stuff for mips64, Linux +// + +#include "go_asm.h" +#include "go_tls.h" +#include "textflag.h" + +#define AT_FDCWD -100 + +#define SYS_exit 5058 +#define SYS_read 5000 +#define SYS_write 5001 +#define SYS_close 5003 +#define SYS_getpid 5038 +#define SYS_kill 5060 +#define SYS_fcntl 5070 +#define SYS_mmap 5009 +#define SYS_munmap 5011 +#define SYS_setitimer 5036 +#define SYS_clone 5055 +#define SYS_nanosleep 5034 +#define SYS_sched_yield 5023 +#define SYS_rt_sigreturn 5211 +#define SYS_rt_sigaction 5013 +#define SYS_rt_sigprocmask 5014 +#define SYS_sigaltstack 5129 +#define SYS_madvise 5027 +#define SYS_mincore 5026 +#define SYS_gettid 5178 +#define SYS_futex 5194 +#define SYS_sched_getaffinity 5196 +#define SYS_exit_group 5205 +#define SYS_epoll_create 5207 +#define SYS_epoll_ctl 5208 +#define SYS_tgkill 5225 +#define SYS_openat 5247 +#define SYS_epoll_pwait 5272 +#define SYS_clock_gettime 5222 +#define SYS_epoll_create1 5285 +#define SYS_brk 5012 +#define SYS_pipe2 5287 + +TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0-4 + MOVW code+0(FP), R4 + MOVV $SYS_exit_group, R2 + SYSCALL + RET + +// func exitThread(wait *uint32) +TEXT runtime·exitThread(SB),NOSPLIT|NOFRAME,$0-8 + MOVV wait+0(FP), R1 + // We're done using the stack. + MOVW $0, R2 + SYNC + MOVW R2, (R1) + SYNC + MOVW $0, R4 // exit code + MOVV $SYS_exit, R2 + SYSCALL + JMP 0(PC) + +TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0-20 + // This uses openat instead of open, because Android O blocks open. + MOVW $AT_FDCWD, R4 // AT_FDCWD, so this acts like open + MOVV name+0(FP), R5 + MOVW mode+8(FP), R6 + MOVW perm+12(FP), R7 + MOVV $SYS_openat, R2 + SYSCALL + BEQ R7, 2(PC) + MOVW $-1, R2 + MOVW R2, ret+16(FP) + RET + +TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0-12 + MOVW fd+0(FP), R4 + MOVV $SYS_close, R2 + SYSCALL + BEQ R7, 2(PC) + MOVW $-1, R2 + MOVW R2, ret+8(FP) + RET + +TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0-28 + MOVV fd+0(FP), R4 + MOVV p+8(FP), R5 + MOVW n+16(FP), R6 + MOVV $SYS_write, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28 + MOVW fd+0(FP), R4 + MOVV p+8(FP), R5 + MOVW n+16(FP), R6 + MOVV $SYS_read, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +// func pipe() (r, w int32, errno int32) +TEXT runtime·pipe(SB),NOSPLIT|NOFRAME,$0-12 + MOVV $r+0(FP), R4 + MOVV R0, R5 + MOVV $SYS_pipe2, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, errno+8(FP) + RET + +// func pipe2(flags int32) (r, w int32, errno int32) +TEXT runtime·pipe2(SB),NOSPLIT|NOFRAME,$0-20 + MOVV $r+8(FP), R4 + MOVW flags+0(FP), R5 + MOVV $SYS_pipe2, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, errno+16(FP) + RET + +TEXT runtime·usleep(SB),NOSPLIT,$16-4 + MOVWU usec+0(FP), R3 + MOVV R3, R5 + MOVW $1000000, R4 + DIVVU R4, R3 + MOVV LO, R3 + MOVV R3, 8(R29) + MOVW $1000, R4 + MULVU R3, R4 + MOVV LO, R4 + SUBVU R4, R5 + MOVV R5, 16(R29) + + // nanosleep(&ts, 0) + ADDV $8, R29, R4 + MOVW $0, R5 + MOVV $SYS_nanosleep, R2 + SYSCALL + RET + +TEXT runtime·gettid(SB),NOSPLIT,$0-4 + MOVV $SYS_gettid, R2 + SYSCALL + MOVW R2, ret+0(FP) + RET + +TEXT runtime·raise(SB),NOSPLIT|NOFRAME,$0 + MOVV $SYS_getpid, R2 + SYSCALL + MOVW R2, R16 + MOVV $SYS_gettid, R2 + SYSCALL + MOVW R2, R5 // arg 2 tid + MOVW R16, R4 // arg 1 pid + MOVW sig+0(FP), R6 // arg 3 + MOVV $SYS_tgkill, R2 + SYSCALL + RET + +TEXT runtime·raiseproc(SB),NOSPLIT|NOFRAME,$0 + MOVV $SYS_getpid, R2 + SYSCALL + MOVW R2, R4 // arg 1 pid + MOVW sig+0(FP), R5 // arg 2 + MOVV $SYS_kill, R2 + SYSCALL + RET + +TEXT ·getpid(SB),NOSPLIT|NOFRAME,$0-8 + MOVV $SYS_getpid, R2 + SYSCALL + MOVV R2, ret+0(FP) + RET + +TEXT ·tgkill(SB),NOSPLIT|NOFRAME,$0-24 + MOVV tgid+0(FP), R4 + MOVV tid+8(FP), R5 + MOVV sig+16(FP), R6 + MOVV $SYS_tgkill, R2 + SYSCALL + RET + +TEXT runtime·setitimer(SB),NOSPLIT|NOFRAME,$0-24 + MOVW mode+0(FP), R4 + MOVV new+8(FP), R5 + MOVV old+16(FP), R6 + MOVV $SYS_setitimer, R2 + SYSCALL + RET + +TEXT runtime·mincore(SB),NOSPLIT|NOFRAME,$0-28 + MOVV addr+0(FP), R4 + MOVV n+8(FP), R5 + MOVV dst+16(FP), R6 + MOVV $SYS_mincore, R2 + SYSCALL + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +// func walltime1() (sec int64, nsec int32) +TEXT runtime·walltime1(SB),NOSPLIT,$16-12 + MOVV R29, R16 // R16 is unchanged by C code + MOVV R29, R1 + + MOVV g_m(g), R17 // R17 = m + + // Set vdsoPC and vdsoSP for SIGPROF traceback. + // Save the old values on stack and restore them on exit, + // so this function is reentrant. + MOVV m_vdsoPC(R17), R2 + MOVV m_vdsoSP(R17), R3 + MOVV R2, 8(R29) + MOVV R3, 16(R29) + + MOVV R31, m_vdsoPC(R17) + MOVV R29, m_vdsoSP(R17) + + MOVV m_curg(R17), R4 + MOVV g, R5 + BNE R4, R5, noswitch + + MOVV m_g0(R17), R4 + MOVV (g_sched+gobuf_sp)(R4), R1 // Set SP to g0 stack + +noswitch: + SUBV $16, R1 + AND $~15, R1 // Align for C code + MOVV R1, R29 + + MOVW $0, R4 // CLOCK_REALTIME + MOVV $0(R29), R5 + + MOVV runtime·vdsoClockgettimeSym(SB), R25 + BEQ R25, fallback + + JAL (R25) + // check on vdso call return for kernel compatibility + // see https://golang.org/issues/39046 + // if we get any error make fallback permanent. + BEQ R2, R0, finish + MOVV R0, runtime·vdsoClockgettimeSym(SB) + MOVW $0, R4 // CLOCK_REALTIME + MOVV $0(R29), R5 + JMP fallback + +finish: + MOVV 0(R29), R3 // sec + MOVV 8(R29), R5 // nsec + + MOVV R16, R29 // restore SP + // Restore vdsoPC, vdsoSP + // We don't worry about being signaled between the two stores. + // If we are not in a signal handler, we'll restore vdsoSP to 0, + // and no one will care about vdsoPC. If we are in a signal handler, + // we cannot receive another signal. + MOVV 16(R29), R1 + MOVV R1, m_vdsoSP(R17) + MOVV 8(R29), R1 + MOVV R1, m_vdsoPC(R17) + + MOVV R3, sec+0(FP) + MOVW R5, nsec+8(FP) + RET + +fallback: + MOVV $SYS_clock_gettime, R2 + SYSCALL + JMP finish + +TEXT runtime·nanotime1(SB),NOSPLIT,$16-8 + MOVV R29, R16 // R16 is unchanged by C code + MOVV R29, R1 + + MOVV g_m(g), R17 // R17 = m + + // Set vdsoPC and vdsoSP for SIGPROF traceback. + // Save the old values on stack and restore them on exit, + // so this function is reentrant. + MOVV m_vdsoPC(R17), R2 + MOVV m_vdsoSP(R17), R3 + MOVV R2, 8(R29) + MOVV R3, 16(R29) + + MOVV R31, m_vdsoPC(R17) + MOVV R29, m_vdsoSP(R17) + + MOVV m_curg(R17), R4 + MOVV g, R5 + BNE R4, R5, noswitch + + MOVV m_g0(R17), R4 + MOVV (g_sched+gobuf_sp)(R4), R1 // Set SP to g0 stack + +noswitch: + SUBV $16, R1 + AND $~15, R1 // Align for C code + MOVV R1, R29 + + MOVW $1, R4 // CLOCK_MONOTONIC + MOVV $0(R29), R5 + + MOVV runtime·vdsoClockgettimeSym(SB), R25 + BEQ R25, fallback + + JAL (R25) + // see walltime1 for detail + BEQ R2, R0, finish + MOVV R0, runtime·vdsoClockgettimeSym(SB) + MOVW $1, R4 // CLOCK_MONOTONIC + MOVV $0(R29), R5 + JMP fallback + +finish: + MOVV 0(R29), R3 // sec + MOVV 8(R29), R5 // nsec + + MOVV R16, R29 // restore SP + // Restore vdsoPC, vdsoSP + // We don't worry about being signaled between the two stores. + // If we are not in a signal handler, we'll restore vdsoSP to 0, + // and no one will care about vdsoPC. If we are in a signal handler, + // we cannot receive another signal. + MOVV 16(R29), R1 + MOVV R1, m_vdsoSP(R17) + MOVV 8(R29), R1 + MOVV R1, m_vdsoPC(R17) + + // sec is in R3, nsec in R5 + // return nsec in R3 + MOVV $1000000000, R4 + MULVU R4, R3 + MOVV LO, R3 + ADDVU R5, R3 + MOVV R3, ret+0(FP) + RET + +fallback: + MOVV $SYS_clock_gettime, R2 + SYSCALL + JMP finish + +TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28 + MOVW how+0(FP), R4 + MOVV new+8(FP), R5 + MOVV old+16(FP), R6 + MOVW size+24(FP), R7 + MOVV $SYS_rt_sigprocmask, R2 + SYSCALL + BEQ R7, 2(PC) + MOVV R0, 0xf1(R0) // crash + RET + +TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36 + MOVV sig+0(FP), R4 + MOVV new+8(FP), R5 + MOVV old+16(FP), R6 + MOVV size+24(FP), R7 + MOVV $SYS_rt_sigaction, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+32(FP) + RET + +TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 + MOVW sig+8(FP), R4 + MOVV info+16(FP), R5 + MOVV ctx+24(FP), R6 + MOVV fn+0(FP), R25 + JAL (R25) + RET + +TEXT runtime·sigtramp(SB),NOSPLIT,$64 + // initialize REGSB = PC&0xffffffff00000000 + BGEZAL R0, 1(PC) + SRLV $32, R31, RSB + SLLV $32, RSB + + // this might be called in external code context, + // where g is not set. + MOVB runtime·iscgo(SB), R1 + BEQ R1, 2(PC) + JAL runtime·load_g(SB) + + MOVW R4, 8(R29) + MOVV R5, 16(R29) + MOVV R6, 24(R29) + MOVV $runtime·sigtrampgo(SB), R1 + JAL (R1) + RET + +TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0 + JMP runtime·sigtramp(SB) + +TEXT runtime·mmap(SB),NOSPLIT|NOFRAME,$0 + MOVV addr+0(FP), R4 + MOVV n+8(FP), R5 + MOVW prot+16(FP), R6 + MOVW flags+20(FP), R7 + MOVW fd+24(FP), R8 + MOVW off+28(FP), R9 + + MOVV $SYS_mmap, R2 + SYSCALL + BEQ R7, ok + MOVV $0, p+32(FP) + MOVV R2, err+40(FP) + RET +ok: + MOVV R2, p+32(FP) + MOVV $0, err+40(FP) + RET + +TEXT runtime·munmap(SB),NOSPLIT|NOFRAME,$0 + MOVV addr+0(FP), R4 + MOVV n+8(FP), R5 + MOVV $SYS_munmap, R2 + SYSCALL + BEQ R7, 2(PC) + MOVV R0, 0xf3(R0) // crash + RET + +TEXT runtime·madvise(SB),NOSPLIT|NOFRAME,$0 + MOVV addr+0(FP), R4 + MOVV n+8(FP), R5 + MOVW flags+16(FP), R6 + MOVV $SYS_madvise, R2 + SYSCALL + MOVW R2, ret+24(FP) + RET + +// int64 futex(int32 *uaddr, int32 op, int32 val, +// struct timespec *timeout, int32 *uaddr2, int32 val2); +TEXT runtime·futex(SB),NOSPLIT|NOFRAME,$0 + MOVV addr+0(FP), R4 + MOVW op+8(FP), R5 + MOVW val+12(FP), R6 + MOVV ts+16(FP), R7 + MOVV addr2+24(FP), R8 + MOVW val3+32(FP), R9 + MOVV $SYS_futex, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+40(FP) + RET + +// int64 clone(int32 flags, void *stk, M *mp, G *gp, void (*fn)(void)); +TEXT runtime·clone(SB),NOSPLIT|NOFRAME,$0 + MOVW flags+0(FP), R4 + MOVV stk+8(FP), R5 + + // Copy mp, gp, fn off parent stack for use by child. + // Careful: Linux system call clobbers ???. + MOVV mp+16(FP), R16 + MOVV gp+24(FP), R17 + MOVV fn+32(FP), R18 + + MOVV R16, -8(R5) + MOVV R17, -16(R5) + MOVV R18, -24(R5) + MOVV $1234, R16 + MOVV R16, -32(R5) + + MOVV $SYS_clone, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + + // In parent, return. + BEQ R2, 3(PC) + MOVW R2, ret+40(FP) + RET + + // In child, on new stack. + MOVV -32(R29), R16 + MOVV $1234, R1 + BEQ R16, R1, 2(PC) + MOVV R0, 0(R0) + + // Initialize m->procid to Linux tid + MOVV $SYS_gettid, R2 + SYSCALL + + MOVV -24(R29), R18 // fn + MOVV -16(R29), R17 // g + MOVV -8(R29), R16 // m + + BEQ R16, nog + BEQ R17, nog + + MOVV R2, m_procid(R16) + + // TODO: setup TLS. + + // In child, set up new stack + MOVV R16, g_m(R17) + MOVV R17, g + //CALL runtime·stackcheck(SB) + +nog: + // Call fn + JAL (R18) + + // It shouldn't return. If it does, exit that thread. + MOVW $111, R4 + MOVV $SYS_exit, R2 + SYSCALL + JMP -3(PC) // keep exiting + +TEXT runtime·sigaltstack(SB),NOSPLIT|NOFRAME,$0 + MOVV new+0(FP), R4 + MOVV old+8(FP), R5 + MOVV $SYS_sigaltstack, R2 + SYSCALL + BEQ R7, 2(PC) + MOVV R0, 0xf1(R0) // crash + RET + +TEXT runtime·osyield(SB),NOSPLIT|NOFRAME,$0 + MOVV $SYS_sched_yield, R2 + SYSCALL + RET + +TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0 + MOVV pid+0(FP), R4 + MOVV len+8(FP), R5 + MOVV buf+16(FP), R6 + MOVV $SYS_sched_getaffinity, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +// int32 runtime·epollcreate(int32 size); +TEXT runtime·epollcreate(SB),NOSPLIT|NOFRAME,$0 + MOVW size+0(FP), R4 + MOVV $SYS_epoll_create, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+8(FP) + RET + +// int32 runtime·epollcreate1(int32 flags); +TEXT runtime·epollcreate1(SB),NOSPLIT|NOFRAME,$0 + MOVW flags+0(FP), R4 + MOVV $SYS_epoll_create1, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+8(FP) + RET + +// func epollctl(epfd, op, fd int32, ev *epollEvent) int +TEXT runtime·epollctl(SB),NOSPLIT|NOFRAME,$0 + MOVW epfd+0(FP), R4 + MOVW op+4(FP), R5 + MOVW fd+8(FP), R6 + MOVV ev+16(FP), R7 + MOVV $SYS_epoll_ctl, R2 + SYSCALL + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +// int32 runtime·epollwait(int32 epfd, EpollEvent *ev, int32 nev, int32 timeout); +TEXT runtime·epollwait(SB),NOSPLIT|NOFRAME,$0 + // This uses pwait instead of wait, because Android O blocks wait. + MOVW epfd+0(FP), R4 + MOVV ev+8(FP), R5 + MOVW nev+16(FP), R6 + MOVW timeout+20(FP), R7 + MOVV $0, R8 + MOVV $SYS_epoll_pwait, R2 + SYSCALL + BEQ R7, 2(PC) + SUBVU R2, R0, R2 // caller expects negative errno + MOVW R2, ret+24(FP) + RET + +// void runtime·closeonexec(int32 fd); +TEXT runtime·closeonexec(SB),NOSPLIT|NOFRAME,$0 + MOVW fd+0(FP), R4 // fd + MOVV $2, R5 // F_SETFD + MOVV $1, R6 // FD_CLOEXEC + MOVV $SYS_fcntl, R2 + SYSCALL + RET + +// func runtime·setNonblock(int32 fd) +TEXT runtime·setNonblock(SB),NOSPLIT|NOFRAME,$0-4 + MOVW fd+0(FP), R4 // fd + MOVV $3, R5 // F_GETFL + MOVV $0, R6 + MOVV $SYS_fcntl, R2 + SYSCALL + MOVW $0x80, R6 // O_NONBLOCK + OR R2, R6 + MOVW fd+0(FP), R4 // fd + MOVV $4, R5 // F_SETFL + MOVV $SYS_fcntl, R2 + SYSCALL + RET + +// func sbrk0() uintptr +TEXT runtime·sbrk0(SB),NOSPLIT|NOFRAME,$0-8 + // Implemented as brk(NULL). + MOVV $0, R4 + MOVV $SYS_brk, R2 + SYSCALL + MOVV R2, ret+0(FP) + RET + +TEXT runtime·access(SB),$0-20 + MOVV R0, 2(R0) // unimplemented, only needed for android; declared in stubs_linux.go + MOVW R0, ret+16(FP) // for vet + RET + +TEXT runtime·connect(SB),$0-28 + MOVV R0, 2(R0) // unimplemented, only needed for android; declared in stubs_linux.go + MOVW R0, ret+24(FP) // for vet + RET + +TEXT runtime·socket(SB),$0-20 + MOVV R0, 2(R0) // unimplemented, only needed for android; declared in stubs_linux.go + MOVW R0, ret+16(FP) // for vet + RET -- cgit v1.2.3