| // 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, NetBSD |
| // /usr/src/sys/kern/syscalls.master for syscall numbers. |
| // |
| |
| #include "go_asm.h" |
| #include "go_tls.h" |
| #include "textflag.h" |
| |
| // int32 lwp_create(void *context, uintptr flags, void *lwpid) |
| TEXT runtime·lwp_create(SB),NOSPLIT,$0 |
| MOVQ ctxt+0(FP), DI |
| MOVQ flags+8(FP), SI |
| MOVQ lwpid+16(FP), DX |
| MOVL $309, AX // sys__lwp_create |
| SYSCALL |
| JCC 2(PC) |
| NEGQ AX |
| MOVL AX, ret+24(FP) |
| RET |
| |
| TEXT runtime·lwp_tramp(SB),NOSPLIT,$0 |
| |
| // Set FS to point at m->tls. |
| LEAQ m_tls(R8), DI |
| CALL runtime·settls(SB) |
| |
| // Set up new stack. |
| get_tls(CX) |
| MOVQ R8, g_m(R9) |
| MOVQ R9, g(CX) |
| CALL runtime·stackcheck(SB) |
| |
| // Call fn |
| CALL R12 |
| |
| // It shouldn't return. If it does, exit. |
| MOVL $310, AX // sys__lwp_exit |
| SYSCALL |
| JMP -3(PC) // keep exiting |
| |
| TEXT runtime·osyield(SB),NOSPLIT,$0 |
| MOVL $350, AX // sys_sched_yield |
| SYSCALL |
| RET |
| |
| TEXT runtime·lwp_park(SB),NOSPLIT,$0 |
| MOVQ abstime+0(FP), DI // arg 1 - abstime |
| MOVL unpark+8(FP), SI // arg 2 - unpark |
| MOVQ hint+16(FP), DX // arg 3 - hint |
| MOVQ unparkhint+24(FP), R10 // arg 4 - unparkhint |
| MOVL $434, AX // sys__lwp_park |
| SYSCALL |
| MOVL AX, ret+32(FP) |
| RET |
| |
| TEXT runtime·lwp_unpark(SB),NOSPLIT,$0 |
| MOVL lwp+0(FP), DI // arg 1 - lwp |
| MOVQ hint+8(FP), SI // arg 2 - hint |
| MOVL $321, AX // sys__lwp_unpark |
| SYSCALL |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·lwp_self(SB),NOSPLIT,$0 |
| MOVL $311, AX // sys__lwp_self |
| SYSCALL |
| MOVL AX, ret+0(FP) |
| RET |
| |
| // Exit the entire program (like C exit) |
| TEXT runtime·exit(SB),NOSPLIT,$-8 |
| MOVL code+0(FP), DI // arg 1 - exit status |
| MOVL $1, AX // sys_exit |
| SYSCALL |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·exit1(SB),NOSPLIT,$-8 |
| MOVL $310, AX // sys__lwp_exit |
| 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 - nbyte |
| MOVL $4, AX // sys_write |
| SYSCALL |
| JCC 2(PC) |
| MOVL $-1, AX |
| MOVL AX, ret+24(FP) |
| 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 $430, AX // sys_nanosleep |
| SYSCALL |
| RET |
| |
| TEXT runtime·raise(SB),NOSPLIT,$16 |
| MOVL $311, AX // sys__lwp_self |
| SYSCALL |
| MOVQ AX, DI // arg 1 - target |
| MOVL sig+0(FP), SI // arg 2 - signo |
| MOVL $318, AX // sys__lwp_kill |
| SYSCALL |
| RET |
| |
| TEXT runtime·raiseproc(SB),NOSPLIT,$16 |
| MOVL $20, AX // sys_getpid |
| SYSCALL |
| MOVQ AX, DI // arg 1 - pid |
| MOVL sig+0(FP), SI // arg 2 - signo |
| MOVL $37, AX // sys_kill |
| SYSCALL |
| RET |
| |
| TEXT runtime·setitimer(SB),NOSPLIT,$-8 |
| MOVL mode+0(FP), DI // arg 1 - which |
| MOVQ new+8(FP), SI // arg 2 - itv |
| MOVQ old+16(FP), DX // arg 3 - oitv |
| MOVL $425, AX // sys_setitimer |
| SYSCALL |
| RET |
| |
| // func walltime() (sec int64, nsec int32) |
| TEXT runtime·walltime(SB), NOSPLIT, $32 |
| MOVQ $0, DI // arg 1 - clock_id |
| LEAQ 8(SP), SI // arg 2 - tp |
| MOVL $427, AX // sys_clock_gettime |
| SYSCALL |
| MOVQ 8(SP), AX // sec |
| MOVL 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 |
| MOVQ $0, DI // arg 1 - clock_id |
| LEAQ 8(SP), SI // arg 2 - tp |
| MOVL $427, AX // sys_clock_gettime |
| SYSCALL |
| MOVQ 8(SP), AX // sec |
| MOVL 16(SP), DX // nsec |
| |
| // sec is in AX, nsec in DX |
| // return nsec in AX |
| IMULQ $1000000000, AX |
| ADDQ DX, AX |
| MOVQ AX, ret+0(FP) |
| RET |
| |
| TEXT runtime·getcontext(SB),NOSPLIT,$-8 |
| MOVQ ctxt+0(FP), DI // arg 1 - context |
| MOVL $307, AX // sys_getcontext |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·sigprocmask(SB),NOSPLIT,$0 |
| MOVL how+0(FP), DI // arg 1 - how |
| MOVQ new+8(FP), SI // arg 2 - set |
| MOVQ old+16(FP), DX // arg 3 - oset |
| MOVL $293, AX // sys_sigprocmask |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·sigreturn_tramp(SB),NOSPLIT,$-8 |
| MOVQ R15, DI // Load address of ucontext |
| MOVQ $308, AX // sys_setcontext |
| SYSCALL |
| MOVQ $-1, DI // Something failed... |
| MOVL $1, AX // sys_exit |
| SYSCALL |
| |
| TEXT runtime·sigaction(SB),NOSPLIT,$-8 |
| MOVL sig+0(FP), DI // arg 1 - signum |
| MOVQ new+8(FP), SI // arg 2 - nsa |
| MOVQ old+16(FP), DX // arg 3 - osa |
| // arg 4 - tramp |
| LEAQ runtime·sigreturn_tramp(SB), R10 |
| MOVQ $2, R8 // arg 5 - vers |
| MOVL $340, AX // sys___sigaction_sigtramp |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 |
| MOVQ fn+0(FP), AX |
| MOVL sig+8(FP), DI |
| MOVQ info+16(FP), SI |
| MOVQ ctx+24(FP), DX |
| PUSHQ BP |
| MOVQ SP, BP |
| ANDQ $~15, SP // alignment for x86_64 ABI |
| CALL AX |
| MOVQ BP, SP |
| POPQ BP |
| RET |
| |
| TEXT runtime·sigtramp(SB),NOSPLIT,$72 |
| // Save callee-saved C registers, since the caller may be a C signal handler. |
| MOVQ BX, bx-8(SP) |
| MOVQ BP, bp-16(SP) // save in case GOEXPERIMENT=noframepointer is set |
| MOVQ R12, r12-24(SP) |
| MOVQ R13, r13-32(SP) |
| MOVQ R14, r14-40(SP) |
| MOVQ R15, r15-48(SP) |
| // We don't save mxcsr or the x87 control word because sigtrampgo doesn't |
| // modify them. |
| |
| MOVQ DX, ctx-56(SP) |
| MOVQ SI, info-64(SP) |
| MOVQ DI, signum-72(SP) |
| CALL runtime·sigtrampgo(SB) |
| |
| MOVQ r15-48(SP), R15 |
| MOVQ r14-40(SP), R14 |
| MOVQ r13-32(SP), R13 |
| MOVQ r12-24(SP), R12 |
| MOVQ bp-16(SP), BP |
| MOVQ bx-8(SP), 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 // sys_mmap |
| 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 // sys_munmap |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| |
| TEXT runtime·madvise(SB),NOSPLIT,$0 |
| MOVQ addr+0(FP), DI // arg 1 - addr |
| MOVQ n+8(FP), SI // arg 2 - len |
| MOVL flags+16(FP), DX // arg 3 - behav |
| MOVQ $75, AX // sys_madvise |
| SYSCALL |
| // ignore failure - maybe pages are locked |
| RET |
| |
| TEXT runtime·sigaltstack(SB),NOSPLIT,$-8 |
| MOVQ new+0(FP), DI // arg 1 - nss |
| MOVQ old+8(FP), SI // arg 2 - oss |
| MOVQ $281, AX // sys___sigaltstack14 |
| SYSCALL |
| JCC 2(PC) |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| // set tls base to DI |
| TEXT runtime·settls(SB),NOSPLIT,$8 |
| // adjust for ELF: wants to use -8(FS) for g |
| ADDQ $8, DI // arg 1 - ptr |
| MOVQ $317, AX // sys__lwp_setprivate |
| 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 |
| |
| // int32 runtime·kqueue(void) |
| TEXT runtime·kqueue(SB),NOSPLIT,$0 |
| MOVQ $0, DI |
| MOVL $344, 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 kq+0(FP), DI |
| MOVQ ch+8(FP), SI |
| MOVL nch+16(FP), DX |
| MOVQ ev+24(FP), R10 |
| MOVL nev+32(FP), R8 |
| MOVQ ts+40(FP), R9 |
| MOVL $435, 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 |
