diff options
| author | Russ Cox <rsc@golang.org> | 2009-06-17 15:12:16 -0700 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2009-06-17 15:12:16 -0700 |
| commit | 7343e03c433ebb0c302ed97bf832ad3bd3170de6 (patch) | |
| tree | 26899cbde2c38fd1275b590dcdd6bf92ab0f80c9 /src/pkg/runtime/linux/amd64 | |
| parent | 3b576a770413e799d487e861e3a75027f59ee81c (diff) | |
| download | go-7343e03c433ebb0c302ed97bf832ad3bd3170de6.tar.xz | |
runtime: stack growth adjustments, cleanup
* keep coherent SP/PC in gobuf
(i.e., SP that would be in use at that PC)
* gogocall replaces setspgoto,
should work better in presence of link registers
* delete unused system calls
only amd64; 386 is now broken
R=r
DELTA=548 (183 added, 183 deleted, 182 changed)
OCL=30381
CL=30442
Diffstat (limited to 'src/pkg/runtime/linux/amd64')
| -rw-r--r-- | src/pkg/runtime/linux/amd64/sys.s | 41 |
1 files changed, 11 insertions, 30 deletions
diff --git a/src/pkg/runtime/linux/amd64/sys.s b/src/pkg/runtime/linux/amd64/sys.s index f90c704faf..8ee0ed2f90 100644 --- a/src/pkg/runtime/linux/amd64/sys.s +++ b/src/pkg/runtime/linux/amd64/sys.s @@ -6,6 +6,8 @@ // System calls and other sys.stuff for AMD64, Linux // +#include "amd64/asm.h" + TEXT exit(SB),7,$0-8 MOVL 8(SP), DI MOVL $231, AX // exitgroup - force all os threads to exi @@ -26,27 +28,6 @@ TEXT open(SB),7,$0-16 SYSCALL RET -TEXT close(SB),7,$0-8 - MOVL 8(SP), DI - MOVL $3, AX // syscall entry - SYSCALL - RET - -TEXT fstat(SB),7,$0-16 - MOVL 8(SP), DI - MOVQ 16(SP), SI - MOVL $5, AX // syscall entry - SYSCALL - RET - -TEXT read(SB),7,$0-24 - MOVL 8(SP), DI - MOVQ 16(SP), SI - MOVL 24(SP), DX - MOVL $0, AX // syscall entry - SYSCALL - RET - TEXT write(SB),7,$0-24 MOVL 8(SP), DI MOVQ 16(SP), SI @@ -73,10 +54,10 @@ TEXT rt_sigaction(SB),7,$0-32 RET TEXT sigtramp(SB),7,$24-16 - MOVQ 32(R14), R15 // g = m->gsignal - MOVQ DI,0(SP) - MOVQ SI,8(SP) - MOVQ DX,16(SP) + MOVQ m_gsignal(m), g + MOVQ DI, 0(SP) + MOVQ SI, 8(SP) + MOVQ DX, 16(SP) CALL sighandler(SB) RET @@ -151,8 +132,8 @@ TEXT clone(SB),7,$0 // Copy m, g, fn off parent stack for use by child. // Careful: Linux system call clobbers CX and R11. - MOVQ m+24(SP), R8 - MOVQ g+32(SP), R9 + MOVQ mm+24(SP), R8 + MOVQ gg+32(SP), R9 MOVQ fn+40(SP), R12 MOVL $56, AX @@ -165,13 +146,13 @@ TEXT clone(SB),7,$0 // In child, set up new stack MOVQ SI, SP - MOVQ R8, R14 // m - MOVQ R9, R15 // g + MOVQ R8, m + MOVQ R9, g // Initialize m->procid to Linux tid MOVL $186, AX // gettid SYSCALL - MOVQ AX, 24(R14) + MOVQ AX, m_procid(m) // Call fn CALL R12 |