| // Copyright 2009 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 AMD64, FreeBSD |
| // /usr/src/sys/kern/syscalls.master for syscall numbers. |
| // |
| |
| #include "go_asm.h" |
| #include "go_tls.h" |
| #include "textflag.h" |
| |
| TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI // arg 1 - ptr |
| MOVL val+8(FP), SI // arg 2 - value |
| MOVL timeout+12(FP), DX // arg 3 - timeout |
| MOVL $469, AX // umtx_sleep |
| SYSCALL |
| JCC 2(PC) |
| NEGQ AX |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·sys_umtx_wakeup(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI // arg 1 - ptr |
| MOVL val+8(FP), SI // arg 2 - count |
| MOVL $470, AX // umtx_wakeup |
| SYSCALL |
| JCC 2(PC) |
| NEGQ AX |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·lwp_create(SB),NOSPLIT,$0 |
| MOVQ param+0(FP), DI // arg 1 - params |
| MOVL $495, AX // lwp_create |
| SYSCALL |
| MOVL AX, ret+8(FP) |
| RET |
| |
| TEXT runtime·lwp_start(SB),NOSPLIT,$0 |
| MOVQ DI, R13 // m |
| |
| // set up FS to point at m->tls |
| LEAQ m_tls(R13), DI |
| CALL runtime·settls(SB) // smashes DI |
| |
| // set up m, g |
| get_tls(CX) |
| MOVQ m_g0(R13), DI |
| MOVQ R13, g_m(DI) |
| MOVQ DI, g(CX) |
| |
| CALL runtime·stackcheck(SB) |
| CALL runtime·mstart(SB) |
| |
| MOVQ 0, AX // crash (not reached) |
| |
| // Exit the entire program (like C exit) |
| TEXT runtime·exit(SB),NOSPLIT,$-8 |
| MOVL code+0(FP), DI // arg 1 exit status |
| MOVL $1, AX |
| SYSCALL |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·exit1(SB),NOSPLIT,$-8 |
| MOVL code+0(FP), DI // arg 1 exit status |
| MOVL $431, AX |
| SYSCALL |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·open(SB),NOSPLIT,$-8 |
| MOVQ name+0(FP), DI // arg 1 pathname |
| MOVL mode+8(FP), SI // arg 2 flags |
| MOVL perm+12(FP), DX // arg 3 mode |
| MOVL $5, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $-1, AX |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·closefd(SB),NOSPLIT,$-8 |
| MOVL fd+0(FP), DI // arg 1 fd |
| MOVL $6, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $-1, AX |
| MOVL AX, ret+8(FP) |
| RET |
| |
| TEXT runtime·read(SB),NOSPLIT,$-8 |
| MOVL fd+0(FP), DI // arg 1 fd |
| MOVQ p+8(FP), SI // arg 2 buf |
| MOVL n+16(FP), DX // arg 3 count |
| MOVL $3, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $-1, AX |
| MOVL AX, ret+24(FP) |
| RET |
| |
| TEXT runtime·write(SB),NOSPLIT,$-8 |
| MOVQ fd+0(FP), DI // arg 1 fd |
| MOVQ p+8(FP), SI // arg 2 buf |
| MOVL n+16(FP), DX // arg 3 count |
| MOVL $4, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $-1, AX |
| MOVL AX, ret+24(FP) |
| RET |
| |
| TEXT runtime·getrlimit(SB),NOSPLIT,$-8 |
| MOVL kind+0(FP), DI |
| MOVQ limit+8(FP), SI |
| MOVL $194, AX |
| SYSCALL |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·raise(SB),NOSPLIT,$16 |
| MOVL $496, AX // lwp_gettid |
| SYSCALL |
| MOVQ $-1, DI // arg 1 - pid |
| MOVQ 8(SP), DI // arg 2 - tid |
| MOVL sig+0(FP), SI // arg 3 - signum |
| MOVL $497, AX // lwp_kill |
| SYSCALL |
| RET |
| |
| TEXT runtime·setitimer(SB), NOSPLIT, $-8 |
| MOVL mode+0(FP), DI |
| MOVQ new+8(FP), SI |
| MOVQ old+16(FP), DX |
| MOVL $83, AX |
| SYSCALL |
| RET |
| |
| // func now() (sec int64, nsec int32) |
| TEXT time·now(SB), NOSPLIT, $32 |
| MOVL $232, AX |
| MOVQ $0, DI // CLOCK_REALTIME |
| LEAQ 8(SP), SI |
| SYSCALL |
| MOVQ 8(SP), AX // sec |
| MOVQ 16(SP), DX // nsec |
| |
| // sec is in AX, nsec in DX |
| MOVQ AX, sec+0(FP) |
| MOVL DX, nsec+8(FP) |
| RET |
| |
| TEXT runtime·nanotime(SB), NOSPLIT, $32 |
| MOVL $232, AX |
| MOVQ $4, DI // CLOCK_MONOTONIC |
| LEAQ 8(SP), SI |
| SYSCALL |
| MOVQ 8(SP), AX // sec |
| MOVQ 16(SP), DX // nsec |
| |
| // sec is in AX, nsec in DX |
| // return nsec in AX |
| IMULQ $1000000000, AX |
| ADDQ DX, AX |
| MOVQ AX, ret+0(FP) |
| RET |
| |
| TEXT runtime·sigaction(SB),NOSPLIT,$-8 |
| MOVL sig+0(FP), DI // arg 1 sig |
| MOVQ new+8(FP), SI // arg 2 act |
| MOVQ old+16(FP), DX // arg 3 oact |
| MOVL $342, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·sigtramp(SB),NOSPLIT,$64 |
| get_tls(BX) |
| |
| // check that g exists |
| MOVQ g(BX), R10 |
| CMPQ R10, $0 |
| JNE 5(PC) |
| MOVQ DI, 0(SP) |
| MOVQ $runtime·badsignal(SB), AX |
| CALL AX |
| RET |
| |
| // save g |
| MOVQ R10, 40(SP) |
| |
| // g = m->signal |
| MOVQ g_m(R10), AX |
| MOVQ m_gsignal(AX), AX |
| MOVQ AX, g(BX) |
| |
| MOVQ DI, 0(SP) |
| MOVQ SI, 8(SP) |
| MOVQ DX, 16(SP) |
| MOVQ R10, 24(SP) |
| |
| CALL runtime·sighandler(SB) |
| |
| // restore g |
| get_tls(BX) |
| MOVQ 40(SP), R10 |
| MOVQ R10, g(BX) |
| RET |
| |
| TEXT runtime·mmap(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI // arg 1 - addr |
| MOVQ n+8(FP), SI // arg 2 - len |
| MOVL prot+16(FP), DX // arg 3 - prot |
| MOVL flags+20(FP), R10 // arg 4 - flags |
| MOVL fd+24(FP), R8 // arg 5 - fd |
| MOVL off+28(FP), R9 |
| SUBQ $16, SP |
| MOVQ R9, 8(SP) // arg 7 - offset (passed on stack) |
| MOVQ $0, R9 // arg 6 - pad |
| MOVL $197, AX |
| SYSCALL |
| ADDQ $16, SP |
| MOVQ AX, ret+32(FP) |
| RET |
| |
| TEXT runtime·munmap(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI // arg 1 addr |
| MOVQ n+8(FP), SI // arg 2 len |
| MOVL $73, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·madvise(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI |
| MOVQ n+8(FP), SI |
| MOVL flags+16(FP), DX |
| MOVQ $75, AX // madvise |
| SYSCALL |
| // ignore failure - maybe pages are locked |
| RET |
| |
| TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 |
| MOVQ new+8(SP), DI |
| MOVQ old+16(SP), SI |
| MOVQ $53, AX |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·usleep(SB),NOSPLIT,$16 |
| MOVL $0, DX |
| MOVL usec+0(FP), AX |
| MOVL $1000000, CX |
| DIVL CX |
| MOVQ AX, 0(SP) // tv_sec |
| MOVL $1000, AX |
| MULL DX |
| MOVQ AX, 8(SP) // tv_nsec |
| |
| MOVQ SP, DI // arg 1 - rqtp |
| MOVQ $0, SI // arg 2 - rmtp |
| MOVL $240, AX // sys_nanosleep |
| SYSCALL |
| RET |
| |
| // set tls base to DI |
| TEXT runtime·settls(SB),NOSPLIT,$16 |
| ADDQ $8, DI // adjust for ELF: wants to use -8(FS) for g |
| MOVQ DI, 0(SP) |
| MOVQ $16, 8(SP) |
| MOVQ $0, DI // arg 1 - which |
| MOVQ SP, SI // arg 2 - tls_info |
| MOVQ $16, DX // arg 3 - infosize |
| MOVQ $472, AX // set_tls_area |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·sysctl(SB),NOSPLIT,$0 |
| MOVQ mib+0(FP), DI // arg 1 - name |
| MOVL miblen+8(FP), SI // arg 2 - namelen |
| MOVQ out+16(FP), DX // arg 3 - oldp |
| MOVQ size+24(FP), R10 // arg 4 - oldlenp |
| MOVQ dst+32(FP), R8 // arg 5 - newp |
| MOVQ ndst+40(FP), R9 // arg 6 - newlen |
| MOVQ $202, AX // sys___sysctl |
| SYSCALL |
| JCC 4(PC) |
| NEGQ AX |
| MOVL AX, ret+48(FP) |
| RET |
| MOVL $0, AX |
| MOVL AX, ret+48(FP) |
| RET |
| |
| TEXT runtime·osyield(SB),NOSPLIT,$-4 |
| MOVL $331, AX // sys_sched_yield |
| SYSCALL |
| RET |
| |
| TEXT runtime·sigprocmask(SB),NOSPLIT,$0 |
| MOVL $3, DI // arg 1 - how (SIG_SETMASK) |
| MOVQ new+0(FP), SI // arg 2 - set |
| MOVQ old+8(FP), DX // arg 3 - oset |
| MOVL $340, AX // sys_sigprocmask |
| SYSCALL |
| JAE 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| // int32 runtime·kqueue(void); |
| TEXT runtime·kqueue(SB),NOSPLIT,$0 |
| MOVQ $0, DI |
| MOVQ $0, SI |
| MOVQ $0, DX |
| MOVL $362, AX |
| SYSCALL |
| JCC 2(PC) |
| NEGQ AX |
| MOVL AX, 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 |
| MOVL fd+0(FP), DI |
| MOVQ ev1+8(FP), SI |
| MOVL nev1+16(FP), DX |
| MOVQ ev2+24(FP), R10 |
| MOVL nev2+32(FP), R8 |
| MOVQ ts+40(FP), R9 |
| MOVL $363, AX |
| SYSCALL |
| JCC 2(PC) |
| NEGQ AX |
| MOVL AX, ret+48(FP) |
| RET |
| |
| // void runtime·closeonexec(int32 fd); |
| TEXT runtime·closeonexec(SB),NOSPLIT,$0 |
| MOVL fd+0(FP), DI // fd |
| MOVQ $2, SI // F_SETFD |
| MOVQ $1, DX // FD_CLOEXEC |
| MOVL $92, AX // fcntl |
| SYSCALL |
| RET |
