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// Copyright 2010 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.
#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"
TEXT runtime·open(SB),NOSPLIT,$0
MOVQ $14, BP
SYSCALL
MOVL AX, ret+16(FP)
RET
TEXT runtime·pread(SB),NOSPLIT,$0
MOVQ $50, BP
SYSCALL
MOVL AX, ret+32(FP)
RET
TEXT runtime·pwrite(SB),NOSPLIT,$0
MOVQ $51, BP
SYSCALL
MOVL AX, ret+32(FP)
RET
// int32 _seek(int64*, int32, int64, int32)
TEXT _seek<>(SB),NOSPLIT,$0
MOVQ $39, BP
SYSCALL
RET
// int64 seek(int32, int64, int32)
// Convenience wrapper around _seek, the actual system call.
TEXT runtime·seek(SB),NOSPLIT,$32
LEAQ ret+24(FP), AX
MOVL fd+0(FP), BX
MOVQ offset+8(FP), CX
MOVL whence+16(FP), DX
MOVQ AX, 0(SP)
MOVL BX, 8(SP)
MOVQ CX, 16(SP)
MOVL DX, 24(SP)
CALL _seek<>(SB)
CMPL AX, $0
JGE 2(PC)
MOVQ $-1, ret+24(FP)
RET
TEXT runtime·closefd(SB),NOSPLIT,$0
MOVQ $4, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·exits(SB),NOSPLIT,$0
MOVQ $8, BP
SYSCALL
RET
TEXT runtime·brk_(SB),NOSPLIT,$0
MOVQ $24, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·sleep(SB),NOSPLIT,$0
MOVQ $17, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·plan9_semacquire(SB),NOSPLIT,$0
MOVQ $37, BP
SYSCALL
MOVL AX, ret+16(FP)
RET
TEXT runtime·plan9_tsemacquire(SB),NOSPLIT,$0
MOVQ $52, BP
SYSCALL
MOVL AX, ret+16(FP)
RET
TEXT runtime·nsec(SB),NOSPLIT,$0
MOVQ $53, BP
SYSCALL
MOVQ AX, ret+8(FP)
RET
// func walltime() (sec int64, nsec int32)
TEXT runtime·walltime(SB),NOSPLIT,$8-12
CALL runtime·nanotime1(SB)
MOVQ 0(SP), AX
// generated code for
// func f(x uint64) (uint64, uint64) { return x/1000000000, x%1000000000 }
// adapted to reduce duplication
MOVQ AX, CX
MOVQ $1360296554856532783, AX
MULQ CX
ADDQ CX, DX
RCRQ $1, DX
SHRQ $29, DX
MOVQ DX, sec+0(FP)
IMULQ $1000000000, DX
SUBQ DX, CX
MOVL CX, nsec+8(FP)
RET
TEXT runtime·notify(SB),NOSPLIT,$0
MOVQ $28, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·noted(SB),NOSPLIT,$0
MOVQ $29, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·plan9_semrelease(SB),NOSPLIT,$0
MOVQ $38, BP
SYSCALL
MOVL AX, ret+16(FP)
RET
TEXT runtime·rfork(SB),NOSPLIT,$0
MOVQ $19, BP
SYSCALL
MOVL AX, ret+8(FP)
RET
TEXT runtime·tstart_plan9(SB),NOSPLIT,$8
MOVQ newm+0(FP), CX
MOVQ m_g0(CX), DX
// Layout new m scheduler stack on os stack.
MOVQ SP, AX
MOVQ AX, (g_stack+stack_hi)(DX)
SUBQ $(64*1024), AX // stack size
MOVQ AX, (g_stack+stack_lo)(DX)
MOVQ AX, g_stackguard0(DX)
MOVQ AX, g_stackguard1(DX)
// Initialize procid from TOS struct.
MOVQ _tos(SB), AX
MOVL 64(AX), AX
MOVQ AX, m_procid(CX) // save pid as m->procid
// Finally, initialize g.
get_tls(BX)
MOVQ DX, g(BX)
CALL runtime·stackcheck(SB) // smashes AX, CX
CALL runtime·mstart(SB)
// Exit the thread.
MOVQ $0, 0(SP)
CALL runtime·exits(SB)
JMP 0(PC)
// This is needed by asm_amd64.s
TEXT runtime·settls(SB),NOSPLIT,$0
RET
// void sigtramp(void *ureg, int8 *note)
TEXT runtime·sigtramp(SB),NOSPLIT,$0
get_tls(AX)
// check that g exists
MOVQ g(AX), BX
CMPQ BX, $0
JNE 3(PC)
CALL runtime·badsignal2(SB) // will exit
RET
// save args
MOVQ ureg+0(FP), CX
MOVQ note+8(FP), DX
// change stack
MOVQ g_m(BX), BX
MOVQ m_gsignal(BX), R10
MOVQ (g_stack+stack_hi)(R10), BP
MOVQ BP, SP
// make room for args and g
SUBQ $128, SP
// save g
MOVQ g(AX), BP
MOVQ BP, 32(SP)
// g = m->gsignal
MOVQ R10, g(AX)
// load args and call sighandler
MOVQ CX, 0(SP)
MOVQ DX, 8(SP)
MOVQ BP, 16(SP)
CALL runtime·sighandler(SB)
MOVL 24(SP), AX
// restore g
get_tls(BX)
MOVQ 32(SP), R10
MOVQ R10, g(BX)
// call noted(AX)
MOVQ AX, 0(SP)
CALL runtime·noted(SB)
RET
TEXT runtime·setfpmasks(SB),NOSPLIT,$8
STMXCSR 0(SP)
MOVL 0(SP), AX
ANDL $~0x3F, AX
ORL $(0x3F<<7), AX
MOVL AX, 0(SP)
LDMXCSR 0(SP)
RET
#define ERRMAX 128 /* from os_plan9.h */
// void errstr(int8 *buf, int32 len)
TEXT errstr<>(SB),NOSPLIT,$0
MOVQ $41, BP
SYSCALL
RET
// func errstr() string
// Only used by package syscall.
// Grab error string due to a syscall made
// in entersyscall mode, without going
// through the allocator (issue 4994).
// See ../syscall/asm_plan9_amd64.s:/·Syscall/
TEXT runtime·errstr(SB),NOSPLIT,$16-16
get_tls(AX)
MOVQ g(AX), BX
MOVQ g_m(BX), BX
MOVQ (m_mOS+mOS_errstr)(BX), CX
MOVQ CX, 0(SP)
MOVQ $ERRMAX, 8(SP)
CALL errstr<>(SB)
CALL runtime·findnull(SB)
MOVQ 8(SP), AX
MOVQ AX, ret_len+8(FP)
MOVQ 0(SP), AX
MOVQ AX, ret_base+0(FP)
RET
// never called on this platform
TEXT ·sigpanictramp(SB),NOSPLIT,$0-0
UNDEF
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