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sys_openbsd_mips64.s
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// Copyright 2020 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. // // System calls and other sys.stuff for mips64, OpenBSD // /usr/src/sys/kern/syscalls.master for syscall numbers. // #include "go_asm.h" #include "go_tls.h" #include "textflag.h" #define CLOCK_REALTIME $0 #define CLOCK_MONOTONIC $3 // Exit the entire program (like C exit) TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0 MOVW code+0(FP), R4 // arg 1 - status MOVV $1, R2 // sys_exit SYSCALL BEQ R7, 3(PC) MOVV $0, R2 // crash on syscall failure MOVV R2, (R2) RET // func exitThread(wait *atomic.Uint32) TEXT runtime·exitThread(SB),NOSPLIT,$0 MOVV wait+0(FP), R4 // arg 1 - notdead MOVV $302, R2 // sys___threxit SYSCALL MOVV $0, R2 // crash on syscall failure MOVV R2, (R2) JMP 0(PC) TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0 MOVV name+0(FP), R4 // arg 1 - path MOVW mode+8(FP), R5 // arg 2 - mode MOVW perm+12(FP), R6 // arg 3 - perm MOVV $5, R2 // sys_open SYSCALL BEQ R7, 2(PC) MOVW $-1, R2 MOVW R2, ret+16(FP) RET TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0 MOVW fd+0(FP), R4 // arg 1 - fd MOVV $6, R2 // sys_close SYSCALL BEQ R7, 2(PC) MOVW $-1, R2 MOVW R2, ret+8(FP) RET TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0 MOVW fd+0(FP), R4 // arg 1 - fd MOVV p+8(FP), R5 // arg 2 - buf MOVW n+16(FP), R6 // arg 3 - nbyte MOVV $3, R2 // sys_read SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+24(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 $101, R2 // sys_pipe2 SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, errno+16(FP) RET TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0 MOVV fd+0(FP), R4 // arg 1 - fd MOVV p+8(FP), R5 // arg 2 - buf MOVW n+16(FP), R6 // arg 3 - nbyte MOVV $4, R2 // sys_write SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+24(FP) RET TEXT runtime·usleep(SB),NOSPLIT,$24-4 MOVWU usec+0(FP), R3 MOVV R3, R5 MOVW $1000000, R4 DIVVU R4, R3 MOVV LO, R3 MOVV R3, 8(R29) // tv_sec MOVW $1000, R4 MULVU R3, R4 MOVV LO, R4 SUBVU R4, R5 MOVV R5, 16(R29) // tv_nsec ADDV $8, R29, R4 // arg 1 - rqtp MOVV $0, R5 // arg 2 - rmtp MOVV $91, R2 // sys_nanosleep SYSCALL RET TEXT runtime·getthrid(SB),NOSPLIT,$0-4 MOVV $299, R2 // sys_getthrid SYSCALL MOVW R2, ret+0(FP) RET TEXT runtime·thrkill(SB),NOSPLIT,$0-16 MOVW tid+0(FP), R4 // arg 1 - tid MOVV sig+8(FP), R5 // arg 2 - signum MOVW $0, R6 // arg 3 - tcb MOVV $119, R2 // sys_thrkill SYSCALL RET TEXT runtime·raiseproc(SB),NOSPLIT,$0 MOVV $20, R4 // sys_getpid SYSCALL MOVV R2, R4 // arg 1 - pid MOVW sig+0(FP), R5 // arg 2 - signum MOVV $122, R2 // sys_kill SYSCALL RET TEXT runtime·mmap(SB),NOSPLIT,$0 MOVV addr+0(FP), R4 // arg 1 - addr MOVV n+8(FP), R5 // arg 2 - len MOVW prot+16(FP), R6 // arg 3 - prot MOVW flags+20(FP), R7 // arg 4 - flags MOVW fd+24(FP), R8 // arg 5 - fd MOVW $0, R9 // arg 6 - pad MOVW off+28(FP), R10 // arg 7 - offset MOVV $197, R2 // sys_mmap SYSCALL MOVV $0, R4 BEQ R7, 3(PC) MOVV R2, R4 // if error, move to R4 MOVV $0, R2 MOVV R2, p+32(FP) MOVV R4, err+40(FP) RET TEXT runtime·munmap(SB),NOSPLIT,$0 MOVV addr+0(FP), R4 // arg 1 - addr MOVV n+8(FP), R5 // arg 2 - len MOVV $73, R2 // sys_munmap SYSCALL BEQ R7, 3(PC) MOVV $0, R2 // crash on syscall failure MOVV R2, (R2) RET TEXT runtime·madvise(SB),NOSPLIT,$0 MOVV addr+0(FP), R4 // arg 1 - addr MOVV n+8(FP), R5 // arg 2 - len MOVW flags+16(FP), R6 // arg 2 - flags MOVV $75, R2 // sys_madvise SYSCALL BEQ R7, 2(PC) MOVW $-1, R2 MOVW R2, ret+24(FP) RET TEXT runtime·setitimer(SB),NOSPLIT,$0 MOVW mode+0(FP), R4 // arg 1 - mode MOVV new+8(FP), R5 // arg 2 - new value MOVV old+16(FP), R6 // arg 3 - old value MOVV $69, R2 // sys_setitimer SYSCALL RET // func walltime() (sec int64, nsec int32) TEXT runtime·walltime(SB), NOSPLIT, $32 MOVW CLOCK_REALTIME, R4 // arg 1 - clock_id MOVV $8(R29), R5 // arg 2 - tp MOVV $87, R2 // sys_clock_gettime SYSCALL MOVV 8(R29), R4 // sec MOVV 16(R29), R5 // nsec MOVV R4, sec+0(FP) MOVW R5, nsec+8(FP) RET // int64 nanotime1(void) so really // void nanotime1(int64 *nsec) TEXT runtime·nanotime1(SB),NOSPLIT,$32 MOVW CLOCK_MONOTONIC, R4 // arg 1 - clock_id MOVV $8(R29), R5 // arg 2 - tp MOVV $87, R2 // sys_clock_gettime SYSCALL MOVV 8(R29), R3 // sec MOVV 16(R29), R5 // nsec MOVV $1000000000, R4 MULVU R4, R3 MOVV LO, R3 ADDVU R5, R3 MOVV R3, ret+0(FP) RET TEXT runtime·sigaction(SB),NOSPLIT,$0 MOVW sig+0(FP), R4 // arg 1 - signum MOVV new+8(FP), R5 // arg 2 - new sigaction MOVV old+16(FP), R6 // arg 3 - old sigaction MOVV $46, R2 // sys_sigaction SYSCALL BEQ R7, 3(PC) MOVV $3, R2 // crash on syscall failure MOVV R2, (R2) RET TEXT runtime·obsdsigprocmask(SB),NOSPLIT,$0 MOVW how+0(FP), R4 // arg 1 - mode MOVW new+4(FP), R5 // arg 2 - new MOVV $48, R2 // sys_sigprocmask SYSCALL BEQ R7, 3(PC) MOVV $3, R2 // crash on syscall failure MOVV R2, (R2) MOVW R2, ret+8(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 // Must use R25, needed for PIC code. CALL (R25) RET TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$192 // 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 // int32 tfork(void *param, uintptr psize, M *mp, G *gp, void (*fn)(void)); TEXT runtime·tfork(SB),NOSPLIT,$0 // Copy mp, gp and fn off parent stack for use by child. MOVV mm+16(FP), R16 MOVV gg+24(FP), R17 MOVV fn+32(FP), R18 MOVV param+0(FP), R4 // arg 1 - param MOVV psize+8(FP), R5 // arg 2 - psize MOVV $8, R2 // sys___tfork SYSCALL // Return if syscall failed. BEQ R7, 4(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+40(FP) RET // In parent, return. BEQ R2, 3(PC) MOVW $0, ret+40(FP) RET // Initialise m, g. MOVV R17, g MOVV R16, g_m(g) // Call fn. CALL (R18) // fn should never return. MOVV $2, R8 // crash if reached MOVV R8, (R8) RET TEXT runtime·sigaltstack(SB),NOSPLIT,$0 MOVV new+0(FP), R4 // arg 1 - new sigaltstack MOVV old+8(FP), R5 // arg 2 - old sigaltstack MOVV $288, R2 // sys_sigaltstack SYSCALL BEQ R7, 3(PC) MOVV $0, R8 // crash on syscall failure MOVV R8, (R8) RET TEXT runtime·osyield(SB),NOSPLIT,$0 MOVV $298, R2 // sys_sched_yield SYSCALL RET TEXT runtime·thrsleep(SB),NOSPLIT,$0 MOVV ident+0(FP), R4 // arg 1 - ident MOVW clock_id+8(FP), R5 // arg 2 - clock_id MOVV tsp+16(FP), R6 // arg 3 - tsp MOVV lock+24(FP), R7 // arg 4 - lock MOVV abort+32(FP), R8 // arg 5 - abort MOVV $94, R2 // sys___thrsleep SYSCALL MOVW R2, ret+40(FP) RET TEXT runtime·thrwakeup(SB),NOSPLIT,$0 MOVV ident+0(FP), R4 // arg 1 - ident MOVW n+8(FP), R5 // arg 2 - n MOVV $301, R2 // sys___thrwakeup SYSCALL MOVW R2, ret+16(FP) RET TEXT runtime·sysctl(SB),NOSPLIT,$0 MOVV mib+0(FP), R4 // arg 1 - mib MOVW miblen+8(FP), R5 // arg 2 - miblen MOVV out+16(FP), R6 // arg 3 - out MOVV size+24(FP), R7 // arg 4 - size MOVV dst+32(FP), R8 // arg 5 - dest MOVV ndst+40(FP), R9 // arg 6 - newlen MOVV $202, R2 // sys___sysctl SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+48(FP) RET // int32 runtime·kqueue(void); TEXT runtime·kqueue(SB),NOSPLIT,$0 MOVV $269, R2 // sys_kqueue SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+0(FP) RET // int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout); TEXT runtime·kevent(SB),NOSPLIT,$0 MOVW kq+0(FP), R4 // arg 1 - kq MOVV ch+8(FP), R5 // arg 2 - changelist MOVW nch+16(FP), R6 // arg 3 - nchanges MOVV ev+24(FP), R7 // arg 4 - eventlist MOVW nev+32(FP), R8 // arg 5 - nevents MOVV ts+40(FP), R9 // arg 6 - timeout MOVV $72, R2 // sys_kevent SYSCALL BEQ R7, 2(PC) SUBVU R2, R0, R2 // caller expects negative errno MOVW R2, ret+48(FP) RET // func fcntl(fd, cmd, arg int32) (int32, int32) TEXT runtime·fcntl(SB),NOSPLIT,$0 MOVW fd+0(FP), R4 // fd MOVW cmd+4(FP), R5 // cmd MOVW arg+8(FP), R6 // arg MOVV $92, R2 // sys_fcntl SYSCALL MOVV $0, R4 BEQ R7, noerr MOVV R2, R4 MOVW $-1, R2 noerr: MOVW R2, ret+16(FP) MOVW R4, errno+20(FP) RET // func issetugid() int32 TEXT runtime·issetugid(SB),NOSPLIT,$0 MOVV $253, R2 // sys_issetugid SYSCALL MOVW R2, ret+0(FP) RET