mirror of
https://github.com/golang/go
synced 2024-11-20 06:54:42 -07:00
3e804631d9
This is to reduce the delta between dev.cc and dev.garbage to just garbage collector changes.
These are the files that had merge conflicts and have been edited by hand:
malloc.go
mem_linux.go
mgc.go
os1_linux.go
proc1.go
panic1.go
runtime1.go
LGTM=austin
R=austin
CC=golang-codereviews
https://golang.org/cl/174180043
383 lines
7.3 KiB
ArmAsm
383 lines
7.3 KiB
ArmAsm
// 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 386, 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,$-4
|
|
MOVL $469, AX // umtx_sleep
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
NEGL AX
|
|
MOVL AX, ret+12(FP)
|
|
RET
|
|
|
|
TEXT runtime·sys_umtx_wakeup(SB),NOSPLIT,$-4
|
|
MOVL $470, AX // umtx_wakeup
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
NEGL AX
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·lwp_create(SB),NOSPLIT,$-4
|
|
MOVL $495, AX // lwp_create
|
|
INT $0x80
|
|
MOVL AX, ret+4(FP)
|
|
RET
|
|
|
|
TEXT runtime·lwp_start(SB),NOSPLIT,$0
|
|
|
|
// Set GS to point at m->tls.
|
|
MOVL mm+0(FP), BX
|
|
MOVL m_g0(BX), DX
|
|
LEAL m_tls(BX), BP
|
|
PUSHAL
|
|
PUSHL BP
|
|
CALL runtime·settls(SB)
|
|
POPL AX
|
|
POPAL
|
|
|
|
// Now segment is established. Initialize m, g.
|
|
get_tls(CX)
|
|
MOVL BX, g_m(DX)
|
|
MOVL DX, g(CX)
|
|
|
|
CALL runtime·stackcheck(SB) // smashes AX, CX
|
|
MOVL 0(DX), DX // paranoia; check they are not nil
|
|
MOVL 0(BX), BX
|
|
|
|
// More paranoia; check that stack splitting code works.
|
|
PUSHAL
|
|
CALL runtime·emptyfunc(SB)
|
|
POPAL
|
|
|
|
CALL runtime·mstart(SB)
|
|
|
|
CALL runtime·exit1(SB)
|
|
MOVL $0x1234, 0x1005
|
|
RET
|
|
|
|
// Exit the entire program (like C exit)
|
|
TEXT runtime·exit(SB),NOSPLIT,$-4
|
|
MOVL $1, AX
|
|
INT $0x80
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·exit1(SB),NOSPLIT,$16
|
|
MOVL $0, 0(SP) // syscall gap
|
|
MOVL $0x10000, 4(SP) // arg 1 - how (EXTEXIT_LWP)
|
|
MOVL $0, 8(SP) // arg 2 - status
|
|
MOVL $0, 12(SP) // arg 3 - addr
|
|
MOVL $494, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·open(SB),NOSPLIT,$-4
|
|
MOVL $5, AX
|
|
INT $0x80
|
|
MOVL AX, ret+12(FP)
|
|
RET
|
|
|
|
TEXT runtime·close(SB),NOSPLIT,$-4
|
|
MOVL $6, AX
|
|
INT $0x80
|
|
MOVL AX, ret+4(FP)
|
|
RET
|
|
|
|
TEXT runtime·read(SB),NOSPLIT,$-4
|
|
MOVL $3, AX
|
|
INT $0x80
|
|
MOVL AX, ret+12(FP)
|
|
RET
|
|
|
|
TEXT runtime·write(SB),NOSPLIT,$-4
|
|
MOVL $4, AX
|
|
INT $0x80
|
|
MOVL AX, ret+12(FP)
|
|
RET
|
|
|
|
TEXT runtime·getrlimit(SB),NOSPLIT,$-4
|
|
MOVL $194, AX
|
|
INT $0x80
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·raise(SB),NOSPLIT,$16
|
|
MOVL $496, AX // lwp_gettid
|
|
INT $0x80
|
|
MOVL $0, 0(SP)
|
|
MOVL $-1, 4(SP) // arg 1 - pid
|
|
MOVL AX, 8(SP) // arg 2 - tid
|
|
MOVL sig+0(FP), AX
|
|
MOVL AX, 8(SP) // arg 3 - signum
|
|
MOVL $497, AX // lwp_kill
|
|
INT $0x80
|
|
RET
|
|
|
|
TEXT runtime·mmap(SB),NOSPLIT,$36
|
|
LEAL addr+0(FP), SI
|
|
LEAL 4(SP), DI
|
|
CLD
|
|
MOVSL // arg 1 - addr
|
|
MOVSL // arg 2 - len
|
|
MOVSL // arg 3 - prot
|
|
MOVSL // arg 4 - flags
|
|
MOVSL // arg 5 - fd
|
|
MOVL $0, AX
|
|
STOSL // arg 6 - pad
|
|
MOVSL // arg 7 - offset
|
|
MOVL $0, AX // top 32 bits of file offset
|
|
STOSL
|
|
MOVL $197, AX // sys_mmap
|
|
INT $0x80
|
|
MOVL AX, ret+24(FP)
|
|
RET
|
|
|
|
TEXT runtime·munmap(SB),NOSPLIT,$-4
|
|
MOVL $73, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·madvise(SB),NOSPLIT,$-4
|
|
MOVL $75, AX // madvise
|
|
INT $0x80
|
|
// ignore failure - maybe pages are locked
|
|
RET
|
|
|
|
TEXT runtime·setitimer(SB), NOSPLIT, $-4
|
|
MOVL $83, AX
|
|
INT $0x80
|
|
RET
|
|
|
|
// func now() (sec int64, nsec int32)
|
|
TEXT time·now(SB), NOSPLIT, $32
|
|
MOVL $232, AX
|
|
LEAL 12(SP), BX
|
|
MOVL $0, 4(SP) // CLOCK_REALTIME
|
|
MOVL BX, 8(SP)
|
|
INT $0x80
|
|
MOVL 12(SP), AX // sec
|
|
MOVL 16(SP), BX // nsec
|
|
|
|
// sec is in AX, nsec in BX
|
|
MOVL AX, sec+0(FP)
|
|
MOVL $0, sec+4(FP)
|
|
MOVL BX, nsec+8(FP)
|
|
RET
|
|
|
|
// int64 nanotime(void) so really
|
|
// void nanotime(int64 *nsec)
|
|
TEXT runtime·nanotime(SB), NOSPLIT, $32
|
|
MOVL $232, AX
|
|
LEAL 12(SP), BX
|
|
MOVL $4, 4(SP) // CLOCK_MONOTONIC
|
|
MOVL BX, 8(SP)
|
|
INT $0x80
|
|
MOVL 12(SP), AX // sec
|
|
MOVL 16(SP), BX // nsec
|
|
|
|
// sec is in AX, nsec in BX
|
|
// convert to DX:AX nsec
|
|
MOVL $1000000000, CX
|
|
MULL CX
|
|
ADDL BX, AX
|
|
ADCL $0, DX
|
|
|
|
MOVL AX, ret_lo+0(FP)
|
|
MOVL DX, ret_hi+4(FP)
|
|
RET
|
|
|
|
|
|
TEXT runtime·sigaction(SB),NOSPLIT,$-4
|
|
MOVL $342, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·sigtramp(SB),NOSPLIT,$44
|
|
get_tls(CX)
|
|
|
|
// check that g exists
|
|
MOVL g(CX), DI
|
|
CMPL DI, $0
|
|
JNE 6(PC)
|
|
MOVL signo+0(FP), BX
|
|
MOVL BX, 0(SP)
|
|
MOVL $runtime·badsignal(SB), AX
|
|
CALL AX
|
|
JMP ret
|
|
|
|
// save g
|
|
MOVL DI, 20(SP)
|
|
|
|
// g = m->gsignal
|
|
MOVL g_m(DI), BX
|
|
MOVL m_gsignal(BX), BX
|
|
MOVL BX, g(CX)
|
|
|
|
// copy arguments for call to sighandler
|
|
MOVL signo+0(FP), BX
|
|
MOVL BX, 0(SP)
|
|
MOVL info+4(FP), BX
|
|
MOVL BX, 4(SP)
|
|
MOVL context+8(FP), BX
|
|
MOVL BX, 8(SP)
|
|
MOVL DI, 12(SP)
|
|
|
|
CALL runtime·sighandler(SB)
|
|
|
|
// restore g
|
|
get_tls(CX)
|
|
MOVL 20(SP), BX
|
|
MOVL BX, g(CX)
|
|
|
|
ret:
|
|
// call sigreturn
|
|
MOVL context+8(FP), AX
|
|
MOVL $0, 0(SP) // syscall gap
|
|
MOVL AX, 4(SP)
|
|
MOVL $344, AX // sigreturn(ucontext)
|
|
INT $0x80
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·sigaltstack(SB),NOSPLIT,$0
|
|
MOVL $53, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
TEXT runtime·usleep(SB),NOSPLIT,$20
|
|
MOVL $0, DX
|
|
MOVL usec+0(FP), AX
|
|
MOVL $1000000, CX
|
|
DIVL CX
|
|
MOVL AX, 12(SP) // tv_sec
|
|
MOVL $1000, AX
|
|
MULL DX
|
|
MOVL AX, 16(SP) // tv_nsec
|
|
|
|
MOVL $0, 0(SP)
|
|
LEAL 12(SP), AX
|
|
MOVL AX, 4(SP) // arg 1 - rqtp
|
|
MOVL $0, 8(SP) // arg 2 - rmtp
|
|
MOVL $240, AX // sys_nanosleep
|
|
INT $0x80
|
|
RET
|
|
|
|
TEXT runtime·setldt(SB),NOSPLIT,$4
|
|
// Under DragonFly we set the GS base instead of messing with the LDT.
|
|
MOVL tls0+4(FP), AX
|
|
MOVL AX, 0(SP)
|
|
CALL runtime·settls(SB)
|
|
RET
|
|
|
|
TEXT runtime·settls(SB),NOSPLIT,$24
|
|
// adjust for ELF: wants to use -8(GS) and -4(GS) for g and m
|
|
MOVL tlsbase+0(FP), CX
|
|
ADDL $8, CX
|
|
|
|
// Set up a struct tls_info - a size of -1 maps the whole address
|
|
// space and is required for direct-tls access of variable data
|
|
// via negative offsets.
|
|
LEAL 16(SP), BX
|
|
MOVL CX, 16(SP) // base
|
|
MOVL $-1, 20(SP) // size
|
|
|
|
// set_tls_area returns the descriptor that needs to be loaded into GS.
|
|
MOVL $0, 0(SP) // syscall gap
|
|
MOVL $0, 4(SP) // arg 1 - which
|
|
MOVL BX, 8(SP) // arg 2 - tls_info
|
|
MOVL $8, 12(SP) // arg 3 - infosize
|
|
MOVL $472, AX // set_tls_area
|
|
INT $0x80
|
|
JCC 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
MOVW AX, GS
|
|
RET
|
|
|
|
TEXT runtime·sysctl(SB),NOSPLIT,$28
|
|
LEAL mib+0(FP), SI
|
|
LEAL 4(SP), DI
|
|
CLD
|
|
MOVSL // arg 1 - name
|
|
MOVSL // arg 2 - namelen
|
|
MOVSL // arg 3 - oldp
|
|
MOVSL // arg 4 - oldlenp
|
|
MOVSL // arg 5 - newp
|
|
MOVSL // arg 6 - newlen
|
|
MOVL $202, AX // sys___sysctl
|
|
INT $0x80
|
|
JCC 4(PC)
|
|
NEGL AX
|
|
MOVL AX, ret+24(FP)
|
|
RET
|
|
MOVL $0, AX
|
|
MOVL AX, ret+24(FP)
|
|
RET
|
|
|
|
TEXT runtime·osyield(SB),NOSPLIT,$-4
|
|
MOVL $331, AX // sys_sched_yield
|
|
INT $0x80
|
|
RET
|
|
|
|
TEXT runtime·sigprocmask(SB),NOSPLIT,$16
|
|
MOVL $0, 0(SP) // syscall gap
|
|
MOVL $3, 4(SP) // arg 1 - how (SIG_SETMASK)
|
|
MOVL new+0(FP), AX
|
|
MOVL AX, 8(SP) // arg 2 - set
|
|
MOVL old+4(FP), AX
|
|
MOVL AX, 12(SP) // arg 3 - oset
|
|
MOVL $340, AX // sys_sigprocmask
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
MOVL $0xf1, 0xf1 // crash
|
|
RET
|
|
|
|
// int32 runtime·kqueue(void);
|
|
TEXT runtime·kqueue(SB),NOSPLIT,$0
|
|
MOVL $362, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
NEGL 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 $363, AX
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
NEGL AX
|
|
MOVL AX, ret+24(FP)
|
|
RET
|
|
|
|
// int32 runtime·closeonexec(int32 fd);
|
|
TEXT runtime·closeonexec(SB),NOSPLIT,$32
|
|
MOVL $92, AX // fcntl
|
|
// 0(SP) is where the caller PC would be; kernel skips it
|
|
MOVL fd+0(FP), BX
|
|
MOVL BX, 4(SP) // fd
|
|
MOVL $2, 8(SP) // F_SETFD
|
|
MOVL $1, 12(SP) // FD_CLOEXEC
|
|
INT $0x80
|
|
JAE 2(PC)
|
|
NEGL AX
|
|
RET
|
|
|
|
GLOBL runtime·tlsoffset(SB),NOPTR,$4
|