mirror of
https://github.com/golang/go
synced 2024-11-19 13:14:42 -07:00
ef30a1c8aa
For vet. There are more. This is a start. Change-Id: Ibbbb2b20b5db60ee3fac4a1b5913d18fab01f6b9 Reviewed-on: https://go-review.googlesource.com/36939 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
467 lines
9.6 KiB
ArmAsm
467 lines
9.6 KiB
ArmAsm
// Copyright 2013 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"
|
|
#include "syscall_nacl.h"
|
|
|
|
#define NACL_SYSCALL(code) \
|
|
MOVL $(0x10000 + ((code)<<5)), AX; CALL AX
|
|
|
|
TEXT runtime·settls(SB),NOSPLIT,$0
|
|
MOVL DI, TLS // really BP
|
|
RET
|
|
|
|
TEXT runtime·exit(SB),NOSPLIT,$0
|
|
MOVL code+0(FP), DI
|
|
NACL_SYSCALL(SYS_exit)
|
|
RET
|
|
|
|
TEXT runtime·exit1(SB),NOSPLIT,$0
|
|
MOVL code+0(FP), DI
|
|
NACL_SYSCALL(SYS_thread_exit)
|
|
RET
|
|
|
|
TEXT runtime·open(SB),NOSPLIT,$0
|
|
MOVL name+0(FP), DI
|
|
MOVL mode+4(FP), SI
|
|
MOVL perm+8(FP), DX
|
|
NACL_SYSCALL(SYS_open)
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT runtime·closefd(SB),NOSPLIT,$0
|
|
MOVL fd+0(FP), DI
|
|
NACL_SYSCALL(SYS_close)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·read(SB),NOSPLIT,$0
|
|
MOVL fd+0(FP), DI
|
|
MOVL p+4(FP), SI
|
|
MOVL n+8(FP), DX
|
|
NACL_SYSCALL(SYS_read)
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT syscall·naclWrite(SB), NOSPLIT, $24-20
|
|
MOVL arg1+0(FP), DI
|
|
MOVL arg2+4(FP), SI
|
|
MOVL arg3+8(FP), DX
|
|
MOVL DI, 0(SP)
|
|
MOVL SI, 4(SP)
|
|
MOVL DX, 8(SP)
|
|
CALL runtime·write(SB)
|
|
MOVL 16(SP), AX
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT runtime·write(SB),NOSPLIT,$16-20
|
|
// If using fake time and writing to stdout or stderr,
|
|
// emit playback header before actual data.
|
|
MOVQ runtime·faketime(SB), AX
|
|
CMPQ AX, $0
|
|
JEQ write
|
|
MOVL fd+0(FP), DI
|
|
CMPL DI, $1
|
|
JEQ playback
|
|
CMPL DI, $2
|
|
JEQ playback
|
|
|
|
write:
|
|
// Ordinary write.
|
|
MOVL fd+0(FP), DI
|
|
MOVL p+4(FP), SI
|
|
MOVL n+8(FP), DX
|
|
NACL_SYSCALL(SYS_write)
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
// Write with playback header.
|
|
// First, lock to avoid interleaving writes.
|
|
playback:
|
|
MOVL $1, BX
|
|
XCHGL runtime·writelock(SB), BX
|
|
CMPL BX, $0
|
|
JNE playback
|
|
|
|
// Playback header: 0 0 P B <8-byte time> <4-byte data length>
|
|
MOVL $(('B'<<24) | ('P'<<16)), 0(SP)
|
|
BSWAPQ AX
|
|
MOVQ AX, 4(SP)
|
|
MOVL n+8(FP), DX
|
|
BSWAPL DX
|
|
MOVL DX, 12(SP)
|
|
MOVL fd+0(FP), DI
|
|
MOVL SP, SI
|
|
MOVL $16, DX
|
|
NACL_SYSCALL(SYS_write)
|
|
|
|
// Write actual data.
|
|
MOVL fd+0(FP), DI
|
|
MOVL p+4(FP), SI
|
|
MOVL n+8(FP), DX
|
|
NACL_SYSCALL(SYS_write)
|
|
|
|
// Unlock.
|
|
MOVL $0, runtime·writelock(SB)
|
|
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_exception_stack(SB),NOSPLIT,$0
|
|
MOVL p+0(FP), DI
|
|
MOVL size+4(FP), SI
|
|
NACL_SYSCALL(SYS_exception_stack)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_exception_handler(SB),NOSPLIT,$0
|
|
MOVL fn+0(FP), DI
|
|
MOVL arg+4(FP), SI
|
|
NACL_SYSCALL(SYS_exception_handler)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_sem_create(SB),NOSPLIT,$0
|
|
MOVL flag+0(FP), DI
|
|
NACL_SYSCALL(SYS_sem_create)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_sem_wait(SB),NOSPLIT,$0
|
|
MOVL sem+0(FP), DI
|
|
NACL_SYSCALL(SYS_sem_wait)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_sem_post(SB),NOSPLIT,$0
|
|
MOVL sem+0(FP), DI
|
|
NACL_SYSCALL(SYS_sem_post)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_mutex_create(SB),NOSPLIT,$0
|
|
MOVL flag+0(FP), DI
|
|
NACL_SYSCALL(SYS_mutex_create)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_mutex_lock(SB),NOSPLIT,$0
|
|
MOVL mutex+0(FP), DI
|
|
NACL_SYSCALL(SYS_mutex_lock)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_mutex_trylock(SB),NOSPLIT,$0
|
|
MOVL mutex+0(FP), DI
|
|
NACL_SYSCALL(SYS_mutex_trylock)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_mutex_unlock(SB),NOSPLIT,$0
|
|
MOVL mutex+0(FP), DI
|
|
NACL_SYSCALL(SYS_mutex_unlock)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_cond_create(SB),NOSPLIT,$0
|
|
MOVL flag+0(FP), DI
|
|
NACL_SYSCALL(SYS_cond_create)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_cond_wait(SB),NOSPLIT,$0
|
|
MOVL cond+0(FP), DI
|
|
MOVL n+4(FP), SI
|
|
NACL_SYSCALL(SYS_cond_wait)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_cond_signal(SB),NOSPLIT,$0
|
|
MOVL cond+0(FP), DI
|
|
NACL_SYSCALL(SYS_cond_signal)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_cond_broadcast(SB),NOSPLIT,$0
|
|
MOVL cond+0(FP), DI
|
|
NACL_SYSCALL(SYS_cond_broadcast)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_cond_timed_wait_abs(SB),NOSPLIT,$0
|
|
MOVL cond+0(FP), DI
|
|
MOVL lock+4(FP), SI
|
|
MOVL ts+8(FP), DX
|
|
NACL_SYSCALL(SYS_cond_timed_wait_abs)
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT runtime·nacl_thread_create(SB),NOSPLIT,$0
|
|
MOVL fn+0(FP), DI
|
|
MOVL stk+4(FP), SI
|
|
MOVL tls+8(FP), DX
|
|
MOVL xx+12(FP), CX
|
|
NACL_SYSCALL(SYS_thread_create)
|
|
MOVL AX, ret+16(FP)
|
|
RET
|
|
|
|
TEXT runtime·mstart_nacl(SB),NOSPLIT,$0
|
|
NACL_SYSCALL(SYS_tls_get)
|
|
SUBL $8, AX
|
|
MOVL AX, TLS
|
|
JMP runtime·mstart(SB)
|
|
|
|
TEXT runtime·nacl_nanosleep(SB),NOSPLIT,$0
|
|
MOVL ts+0(FP), DI
|
|
MOVL extra+4(FP), SI
|
|
NACL_SYSCALL(SYS_nanosleep)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·osyield(SB),NOSPLIT,$0
|
|
NACL_SYSCALL(SYS_sched_yield)
|
|
RET
|
|
|
|
TEXT runtime·mmap(SB),NOSPLIT,$8
|
|
MOVL addr+0(FP), DI
|
|
MOVL n+4(FP), SI
|
|
MOVL prot+8(FP), DX
|
|
MOVL flags+12(FP), CX
|
|
MOVL fd+16(FP), R8
|
|
MOVL off+20(FP), AX
|
|
MOVQ AX, 0(SP)
|
|
MOVL SP, R9
|
|
NACL_SYSCALL(SYS_mmap)
|
|
CMPL AX, $-4095
|
|
JNA 2(PC)
|
|
NEGL AX
|
|
MOVL AX, ret+24(FP)
|
|
RET
|
|
|
|
TEXT runtime·walltime(SB),NOSPLIT,$16
|
|
MOVQ runtime·faketime(SB), AX
|
|
CMPQ AX, $0
|
|
JEQ realtime
|
|
MOVQ $0, DX
|
|
MOVQ $1000000000, CX
|
|
DIVQ CX
|
|
MOVQ AX, sec+0(FP)
|
|
MOVL DX, nsec+8(FP)
|
|
RET
|
|
realtime:
|
|
MOVL $0, DI // real time clock
|
|
LEAL 0(SP), AX
|
|
MOVL AX, SI // timespec
|
|
NACL_SYSCALL(SYS_clock_gettime)
|
|
MOVL 0(SP), AX // low 32 sec
|
|
MOVL 4(SP), CX // high 32 sec
|
|
MOVL 8(SP), BX // nsec
|
|
|
|
// sec is in AX, nsec in BX
|
|
MOVL AX, sec_lo+0(FP)
|
|
MOVL CX, sec_hi+4(FP)
|
|
MOVL BX, nsec+8(FP)
|
|
RET
|
|
|
|
TEXT syscall·now(SB),NOSPLIT,$0
|
|
JMP runtime·walltime(SB)
|
|
|
|
TEXT runtime·nacl_clock_gettime(SB),NOSPLIT,$0
|
|
MOVL arg1+0(FP), DI
|
|
MOVL arg2+4(FP), SI
|
|
NACL_SYSCALL(SYS_clock_gettime)
|
|
MOVL AX, ret+8(FP)
|
|
RET
|
|
|
|
TEXT runtime·nanotime(SB),NOSPLIT,$16
|
|
MOVQ runtime·faketime(SB), AX
|
|
CMPQ AX, $0
|
|
JEQ 3(PC)
|
|
MOVQ AX, ret+0(FP)
|
|
RET
|
|
MOVL $0, DI // real time clock
|
|
LEAL 0(SP), AX
|
|
MOVL AX, SI // timespec
|
|
NACL_SYSCALL(SYS_clock_gettime)
|
|
MOVQ 0(SP), AX // sec
|
|
MOVL 8(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·sigtramp(SB),NOSPLIT,$80
|
|
// restore TLS register at time of execution,
|
|
// in case it's been smashed.
|
|
// the TLS register is really BP, but for consistency
|
|
// with non-NaCl systems it is referred to here as TLS.
|
|
// NOTE: Cannot use SYS_tls_get here (like we do in mstart_nacl),
|
|
// because the main thread never calls tls_set.
|
|
LEAL ctxt+0(FP), AX
|
|
MOVL (16*4+5*8)(AX), AX
|
|
MOVL AX, TLS
|
|
|
|
// check that g exists
|
|
get_tls(CX)
|
|
MOVL g(CX), DI
|
|
|
|
CMPL DI, $0
|
|
JEQ nog
|
|
|
|
// save g
|
|
MOVL DI, 20(SP)
|
|
|
|
// g = m->gsignal
|
|
MOVL g_m(DI), BX
|
|
MOVL m_gsignal(BX), BX
|
|
MOVL BX, g(CX)
|
|
|
|
//JMP debughandler
|
|
|
|
// copy arguments for sighandler
|
|
MOVL $11, 0(SP) // signal
|
|
MOVL $0, 4(SP) // siginfo
|
|
LEAL ctxt+0(FP), AX
|
|
MOVL AX, 8(SP) // context
|
|
MOVL DI, 12(SP) // g
|
|
|
|
CALL runtime·sighandler(SB)
|
|
|
|
// restore g
|
|
get_tls(CX)
|
|
MOVL 20(SP), BX
|
|
MOVL BX, g(CX)
|
|
|
|
// Enable exceptions again.
|
|
NACL_SYSCALL(SYS_exception_clear_flag)
|
|
|
|
// Restore registers as best we can. Impossible to do perfectly.
|
|
// See comment in sys_nacl_386.s for extended rationale.
|
|
LEAL ctxt+0(FP), SI
|
|
ADDL $64, SI
|
|
MOVQ 0(SI), AX
|
|
MOVQ 8(SI), CX
|
|
MOVQ 16(SI), DX
|
|
MOVQ 24(SI), BX
|
|
MOVL 32(SI), SP // MOVL for SP sandboxing
|
|
// 40(SI) is saved BP aka TLS, already restored above
|
|
// 48(SI) is saved SI, never to be seen again
|
|
MOVQ 56(SI), DI
|
|
MOVQ 64(SI), R8
|
|
MOVQ 72(SI), R9
|
|
MOVQ 80(SI), R10
|
|
MOVQ 88(SI), R11
|
|
MOVQ 96(SI), R12
|
|
MOVQ 104(SI), R13
|
|
MOVQ 112(SI), R14
|
|
// 120(SI) is R15, which is owned by Native Client and must not be modified
|
|
MOVQ 128(SI), SI // saved PC
|
|
// 136(SI) is saved EFLAGS, never to be seen again
|
|
JMP SI
|
|
|
|
//debughandler:
|
|
//// print basic information
|
|
//LEAL ctxt+0(FP), DI
|
|
//MOVL $runtime·sigtrampf(SB), AX
|
|
//MOVL AX, 0(SP)
|
|
//MOVQ (16*4+16*8)(DI), BX // rip
|
|
//MOVQ BX, 8(SP)
|
|
//MOVQ (16*4+0*8)(DI), BX // rax
|
|
//MOVQ BX, 16(SP)
|
|
//MOVQ (16*4+1*8)(DI), BX // rcx
|
|
//MOVQ BX, 24(SP)
|
|
//MOVQ (16*4+2*8)(DI), BX // rdx
|
|
//MOVQ BX, 32(SP)
|
|
//MOVQ (16*4+3*8)(DI), BX // rbx
|
|
//MOVQ BX, 40(SP)
|
|
//MOVQ (16*4+7*8)(DI), BX // rdi
|
|
//MOVQ BX, 48(SP)
|
|
//MOVQ (16*4+15*8)(DI), BX // r15
|
|
//MOVQ BX, 56(SP)
|
|
//MOVQ (16*4+4*8)(DI), BX // rsp
|
|
//MOVQ 0(BX), BX
|
|
//MOVQ BX, 64(SP)
|
|
//CALL runtime·printf(SB)
|
|
//
|
|
//LEAL ctxt+0(FP), DI
|
|
//MOVQ (16*4+16*8)(DI), BX // rip
|
|
//MOVL BX, 0(SP)
|
|
//MOVQ (16*4+4*8)(DI), BX // rsp
|
|
//MOVL BX, 4(SP)
|
|
//MOVL $0, 8(SP) // lr
|
|
//get_tls(CX)
|
|
//MOVL g(CX), BX
|
|
//MOVL BX, 12(SP) // gp
|
|
//CALL runtime·traceback(SB)
|
|
|
|
notls:
|
|
MOVL 0, AX
|
|
RET
|
|
|
|
nog:
|
|
MOVL 0, AX
|
|
RET
|
|
|
|
// cannot do real signal handling yet, because gsignal has not been allocated.
|
|
MOVL $1, DI; NACL_SYSCALL(SYS_exit)
|
|
|
|
// func getRandomData([]byte)
|
|
TEXT runtime·getRandomData(SB),NOSPLIT,$0-12
|
|
MOVL arg_base+0(FP), DI
|
|
MOVL arg_len+4(FP), SI
|
|
NACL_SYSCALL(SYS_get_random_bytes)
|
|
RET
|
|
|
|
TEXT runtime·nacl_sysinfo(SB),NOSPLIT,$16
|
|
/*
|
|
MOVL di+0(FP), DI
|
|
LEAL 12(DI), BX
|
|
MOVL 8(DI), AX
|
|
ADDL 4(DI), AX
|
|
ADDL $2, AX
|
|
LEAL (BX)(AX*4), BX
|
|
MOVL BX, runtime·nacl_irt_query(SB)
|
|
auxloop:
|
|
MOVL 0(BX), DX
|
|
CMPL DX, $0
|
|
JNE 2(PC)
|
|
RET
|
|
CMPL DX, $32
|
|
JEQ auxfound
|
|
ADDL $8, BX
|
|
JMP auxloop
|
|
auxfound:
|
|
MOVL 4(BX), BX
|
|
MOVL BX, runtime·nacl_irt_query(SB)
|
|
|
|
LEAL runtime·nacl_irt_basic_v0_1_str(SB), DI
|
|
LEAL runtime·nacl_irt_basic_v0_1(SB), SI
|
|
MOVL runtime·nacl_irt_basic_v0_1_size(SB), DX
|
|
MOVL runtime·nacl_irt_query(SB), BX
|
|
CALL BX
|
|
|
|
LEAL runtime·nacl_irt_memory_v0_3_str(SB), DI
|
|
LEAL runtime·nacl_irt_memory_v0_3(SB), SI
|
|
MOVL runtime·nacl_irt_memory_v0_3_size(SB), DX
|
|
MOVL runtime·nacl_irt_query(SB), BX
|
|
CALL BX
|
|
|
|
LEAL runtime·nacl_irt_thread_v0_1_str(SB), DI
|
|
LEAL runtime·nacl_irt_thread_v0_1(SB), SI
|
|
MOVL runtime·nacl_irt_thread_v0_1_size(SB), DX
|
|
MOVL runtime·nacl_irt_query(SB), BX
|
|
CALL BX
|
|
|
|
// TODO: Once we have a NaCl SDK with futex syscall support,
|
|
// try switching to futex syscalls and here load the
|
|
// nacl-irt-futex-0.1 table.
|
|
*/
|
|
RET
|