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runtime: start new darwin/amd64 threads on correct stack,

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then enable stack check.

R=r
https://golang.org/cl/165100
This commit is contained in:
Russ Cox 2009-12-08 23:34:45 -08:00
parent aacb515668
commit 0400a7f8b1
1 changed files with 13 additions and 11 deletions
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24
src/pkg/runtime/darwin/amd64/sys.s
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@ -11,7 +11,7 @@
#include "amd64/asm.h" #include "amd64/asm.h"
// Exit the entire program (like C exit) // Exit the entire program (like C exit)
TEXT exit(SB),7,$-8 TEXT exit(SB),7,$0
MOVL 8(SP), DI // arg 1 exit status MOVL 8(SP), DI // arg 1 exit status
MOVL $(0x2000000+1), AX // syscall entry MOVL $(0x2000000+1), AX // syscall entry
SYSCALL SYSCALL
@ -20,14 +20,14 @@ TEXT exit(SB),7,$-8
// Exit this OS thread (like pthread_exit, which eventually // Exit this OS thread (like pthread_exit, which eventually
// calls __bsdthread_terminate). // calls __bsdthread_terminate).
TEXT exit1(SB),7,$-8 TEXT exit1(SB),7,$0
MOVL 8(SP), DI // arg 1 exit status MOVL 8(SP), DI // arg 1 exit status
MOVL $(0x2000000+361), AX // syscall entry MOVL $(0x2000000+361), AX // syscall entry
SYSCALL SYSCALL
CALL notok(SB) CALL notok(SB)
RET RET
TEXT write(SB),7,$-8 TEXT write(SB),7,$0
MOVL 8(SP), DI // arg 1 fd MOVL 8(SP), DI // arg 1 fd
MOVQ 16(SP), SI // arg 2 buf MOVQ 16(SP), SI // arg 2 buf
MOVL 24(SP), DX // arg 3 count MOVL 24(SP), DX // arg 3 count
@ -37,7 +37,7 @@ TEXT write(SB),7,$-8
CALL notok(SB) CALL notok(SB)
RET RET
TEXT sigaction(SB),7,$-8 TEXT sigaction(SB),7,$0
MOVL 8(SP), DI // arg 1 sig MOVL 8(SP), DI // arg 1 sig
MOVQ 16(SP), SI // arg 2 act MOVQ 16(SP), SI // arg 2 act
MOVQ 24(SP), DX // arg 3 oact MOVQ 24(SP), DX // arg 3 oact
@ -63,7 +63,7 @@ TEXT sigtramp(SB),7,$40
SYSCALL SYSCALL
INT $3 // not reached INT $3 // not reached
TEXT runtime·mmap(SB),7,$-8 TEXT runtime·mmap(SB),7,$0
MOVQ 8(SP), DI // arg 1 addr MOVQ 8(SP), DI // arg 1 addr
MOVL 16(SP), SI // arg 2 len MOVL 16(SP), SI // arg 2 len
MOVL 20(SP), DX // arg 3 prot MOVL 20(SP), DX // arg 3 prot
@ -76,12 +76,12 @@ TEXT runtime·mmap(SB),7,$-8
CALL notok(SB) CALL notok(SB)
RET RET
TEXT notok(SB),7,$-8 TEXT notok(SB),7,$0
MOVL $0xf1, BP MOVL $0xf1, BP
MOVQ BP, (BP) MOVQ BP, (BP)
RET RET
TEXT runtime·memclr(SB),7,$-8 TEXT runtime·memclr(SB),7,$0
MOVQ 8(SP), DI // arg 1 addr MOVQ 8(SP), DI // arg 1 addr
MOVL 16(SP), CX // arg 2 count MOVL 16(SP), CX // arg 2 count
ADDL $7, CX ADDL $7, CX
@ -103,7 +103,7 @@ TEXT runtime·setcallerpc+0(SB),7,$0
MOVQ BX, -8(AX) // set calling pc MOVQ BX, -8(AX) // set calling pc
RET RET
TEXT sigaltstack(SB),7,$-8 TEXT sigaltstack(SB),7,$0
MOVQ new+8(SP), DI MOVQ new+8(SP), DI
MOVQ old+16(SP), SI MOVQ old+16(SP), SI
MOVQ $(0x2000000+53), AX MOVQ $(0x2000000+53), AX
@ -113,7 +113,7 @@ TEXT sigaltstack(SB),7,$-8
RET RET
// void bsdthread_create(void *stk, M *m, G *g, void (*fn)(void)) // void bsdthread_create(void *stk, M *m, G *g, void (*fn)(void))
TEXT bsdthread_create(SB),7,$-8 TEXT bsdthread_create(SB),7,$0
// Set up arguments to bsdthread_create system call. // Set up arguments to bsdthread_create system call.
// The ones in quotes pass through to the thread callback // The ones in quotes pass through to the thread callback
// uninterpreted, so we can put whatever we want there. // uninterpreted, so we can put whatever we want there.
@ -139,9 +139,11 @@ TEXT bsdthread_create(SB),7,$-8
// R8 = stack // R8 = stack
// R9 = flags (= 0) // R9 = flags (= 0)
// SP = stack - C_64_REDZONE_LEN (= stack - 128) // SP = stack - C_64_REDZONE_LEN (= stack - 128)
TEXT bsdthread_start(SB),7,$-8 TEXT bsdthread_start(SB),7,$0
MOVQ R8, SP // empirically, SP is very wrong but R8 is right
MOVQ CX, m MOVQ CX, m
MOVQ m_g0(m), g MOVQ m_g0(m), g
CALL stackcheck(SB)
MOVQ SI, m_procid(m) // thread port is m->procid MOVQ SI, m_procid(m) // thread port is m->procid
CALL DX // fn CALL DX // fn
CALL exit1(SB) CALL exit1(SB)
@ -150,7 +152,7 @@ TEXT bsdthread_start(SB),7,$-8
// void bsdthread_register(void) // void bsdthread_register(void)
// registers callbacks for threadstart (see bsdthread_create above // registers callbacks for threadstart (see bsdthread_create above
// and wqthread and pthsize (not used). returns 0 on success. // and wqthread and pthsize (not used). returns 0 on success.
TEXT bsdthread_register(SB),7,$-8 TEXT bsdthread_register(SB),7,$0
MOVQ $bsdthread_start(SB), DI // threadstart MOVQ $bsdthread_start(SB), DI // threadstart
MOVQ $0, SI // wqthread, not used by us MOVQ $0, SI // wqthread, not used by us
MOVQ $0, DX // pthsize, not used by us MOVQ $0, DX // pthsize, not used by us