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runtime: remove hand-generated ptr bitmaps for reflectcall

Browse Source 
A Go prototype can be used instead now, and the compiler
will do a better job than we will doing it by hand.
(We got it wrong in amd64p32, causing the current build
breakage.)

The auto-prototype-matching only applies to functions
without an explicit package path, so the TEXT lines for
reflectcall and callXX are s/runtime·/·/.

LGTM=khr
R=khr
CC=golang-codereviews, iant, r
https://golang.org/cl/153600043
This commit is contained in:
Russ Cox 2014-10-15 13:12:16 -04:00
parent 5318a1b5b1
commit cb6f5ac0b0
5 changed files with 151 additions and 170 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
src/runtime/asm_386.s
View File

@ -353,7 +353,7 @@ TEXT runtime·morestack_noctxt(SB),NOSPLIT,$0-0
JMP AX JMP AX
// Note: can't just "JMP NAME(SB)" - bad inlining results. // Note: can't just "JMP NAME(SB)" - bad inlining results.
TEXT runtime·reflectcall(SB), NOSPLIT, $0-16 TEXT ·reflectcall(SB), NOSPLIT, $0-16
MOVL argsize+8(FP), CX MOVL argsize+8(FP), CX
DISPATCH(runtime·call16, 16) DISPATCH(runtime·call16, 16)
DISPATCH(runtime·call32, 32) DISPATCH(runtime·call32, 32)
@ -385,21 +385,9 @@ TEXT runtime·reflectcall(SB), NOSPLIT, $0-16
MOVL $runtime·badreflectcall(SB), AX MOVL $runtime·badreflectcall(SB), AX
JMP AX JMP AX
// Argument map for the callXX frames. Each has one stack map.
DATA gcargs_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gcargs_reflectcall<>+0x04(SB)/4, $8 // 4 words
DATA gcargs_reflectcall<>+0x08(SB)/1, $(const_BitsPointer+(const_BitsPointer<<2)+(const_BitsScalar<<4)+(const_BitsScalar<<6))
GLOBL gcargs_reflectcall<>(SB),RODATA,$12
// callXX frames have no locals
DATA gclocals_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gclocals_reflectcall<>+0x04(SB)/4, $0 // 0 locals
GLOBL gclocals_reflectcall<>(SB),RODATA,$8
#define CALLFN(NAME,MAXSIZE) \ #define CALLFN(NAME,MAXSIZE) \
TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
FUNCDATA $FUNCDATA_ArgsPointerMaps,gcargs_reflectcall<>(SB); \ NO_LOCAL_POINTERS; \
FUNCDATA $FUNCDATA_LocalsPointerMaps,gclocals_reflectcall<>(SB);\
/* copy arguments to stack */ \ /* copy arguments to stack */ \
MOVL argptr+4(FP), SI; \ MOVL argptr+4(FP), SI; \
MOVL argsize+8(FP), CX; \ MOVL argsize+8(FP), CX; \
@ -421,33 +409,33 @@ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
REP;MOVSB; \ REP;MOVSB; \
RET RET
CALLFN(runtime·call16, 16) CALLFN(·call16, 16)
CALLFN(runtime·call32, 32) CALLFN(·call32, 32)
CALLFN(runtime·call64, 64) CALLFN(·call64, 64)
CALLFN(runtime·call128, 128) CALLFN(·call128, 128)
CALLFN(runtime·call256, 256) CALLFN(·call256, 256)
CALLFN(runtime·call512, 512) CALLFN(·call512, 512)
CALLFN(runtime·call1024, 1024) CALLFN(·call1024, 1024)
CALLFN(runtime·call2048, 2048) CALLFN(·call2048, 2048)
CALLFN(runtime·call4096, 4096) CALLFN(·call4096, 4096)
CALLFN(runtime·call8192, 8192) CALLFN(·call8192, 8192)
CALLFN(runtime·call16384, 16384) CALLFN(·call16384, 16384)
CALLFN(runtime·call32768, 32768) CALLFN(·call32768, 32768)
CALLFN(runtime·call65536, 65536) CALLFN(·call65536, 65536)
CALLFN(runtime·call131072, 131072) CALLFN(·call131072, 131072)
CALLFN(runtime·call262144, 262144) CALLFN(·call262144, 262144)
CALLFN(runtime·call524288, 524288) CALLFN(·call524288, 524288)
CALLFN(runtime·call1048576, 1048576) CALLFN(·call1048576, 1048576)
CALLFN(runtime·call2097152, 2097152) CALLFN(·call2097152, 2097152)
CALLFN(runtime·call4194304, 4194304) CALLFN(·call4194304, 4194304)
CALLFN(runtime·call8388608, 8388608) CALLFN(·call8388608, 8388608)
CALLFN(runtime·call16777216, 16777216) CALLFN(·call16777216, 16777216)
CALLFN(runtime·call33554432, 33554432) CALLFN(·call33554432, 33554432)
CALLFN(runtime·call67108864, 67108864) CALLFN(·call67108864, 67108864)
CALLFN(runtime·call134217728, 134217728) CALLFN(·call134217728, 134217728)
CALLFN(runtime·call268435456, 268435456) CALLFN(·call268435456, 268435456)
CALLFN(runtime·call536870912, 536870912) CALLFN(·call536870912, 536870912)
CALLFN(runtime·call1073741824, 1073741824) CALLFN(·call1073741824, 1073741824)
// bool cas(int32 *val, int32 old, int32 new) // bool cas(int32 *val, int32 old, int32 new)
// Atomically: // Atomically:

72
src/runtime/asm_amd64.s
View File

@ -339,11 +339,11 @@ TEXT runtime·morestack_noctxt(SB),NOSPLIT,$0
#define DISPATCH(NAME,MAXSIZE) \ #define DISPATCH(NAME,MAXSIZE) \
CMPQ CX, $MAXSIZE; \ CMPQ CX, $MAXSIZE; \
JA 3(PC); \ JA 3(PC); \
MOVQ $NAME(SB), AX; \ MOVQ $NAME(SB), AX; \
JMP AX JMP AX
// Note: can't just "JMP NAME(SB)" - bad inlining results. // Note: can't just "JMP NAME(SB)" - bad inlining results.
TEXT runtime·reflectcall(SB), NOSPLIT, $0-24 TEXT ·reflectcall(SB), NOSPLIT, $0-24
MOVLQZX argsize+16(FP), CX MOVLQZX argsize+16(FP), CX
DISPATCH(runtime·call16, 16) DISPATCH(runtime·call16, 16)
DISPATCH(runtime·call32, 32) DISPATCH(runtime·call32, 32)
@ -375,21 +375,9 @@ TEXT runtime·reflectcall(SB), NOSPLIT, $0-24
MOVQ $runtime·badreflectcall(SB), AX MOVQ $runtime·badreflectcall(SB), AX
JMP AX JMP AX
// Argument map for the callXX frames. Each has one stack map.
DATA gcargs_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gcargs_reflectcall<>+0x04(SB)/4, $6 // 3 words
DATA gcargs_reflectcall<>+0x08(SB)/1, $(const_BitsPointer+(const_BitsPointer<<2)+(const_BitsScalar<<4))
GLOBL gcargs_reflectcall<>(SB),RODATA,$12
// callXX frames have no locals
DATA gclocals_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gclocals_reflectcall<>+0x04(SB)/4, $0 // 0 locals
GLOBL gclocals_reflectcall<>(SB),RODATA,$8
#define CALLFN(NAME,MAXSIZE) \ #define CALLFN(NAME,MAXSIZE) \
TEXT NAME(SB), WRAPPER, $MAXSIZE-24; \ TEXT NAME(SB), WRAPPER, $MAXSIZE-24; \
FUNCDATA $FUNCDATA_ArgsPointerMaps,gcargs_reflectcall<>(SB); \ NO_LOCAL_POINTERS; \
FUNCDATA $FUNCDATA_LocalsPointerMaps,gclocals_reflectcall<>(SB);\
/* copy arguments to stack */ \ /* copy arguments to stack */ \
MOVQ argptr+8(FP), SI; \ MOVQ argptr+8(FP), SI; \
MOVLQZX argsize+16(FP), CX; \ MOVLQZX argsize+16(FP), CX; \
@ -410,33 +398,33 @@ TEXT NAME(SB), WRAPPER, $MAXSIZE-24; \
REP;MOVSB; \ REP;MOVSB; \
RET RET
CALLFN(runtime·call16, 16) CALLFN(·call16, 16)
CALLFN(runtime·call32, 32) CALLFN(·call32, 32)
CALLFN(runtime·call64, 64) CALLFN(·call64, 64)
CALLFN(runtime·call128, 128) CALLFN(·call128, 128)
CALLFN(runtime·call256, 256) CALLFN(·call256, 256)
CALLFN(runtime·call512, 512) CALLFN(·call512, 512)
CALLFN(runtime·call1024, 1024) CALLFN(·call1024, 1024)
CALLFN(runtime·call2048, 2048) CALLFN(·call2048, 2048)
CALLFN(runtime·call4096, 4096) CALLFN(·call4096, 4096)
CALLFN(runtime·call8192, 8192) CALLFN(·call8192, 8192)
CALLFN(runtime·call16384, 16384) CALLFN(·call16384, 16384)
CALLFN(runtime·call32768, 32768) CALLFN(·call32768, 32768)
CALLFN(runtime·call65536, 65536) CALLFN(·call65536, 65536)
CALLFN(runtime·call131072, 131072) CALLFN(·call131072, 131072)
CALLFN(runtime·call262144, 262144) CALLFN(·call262144, 262144)
CALLFN(runtime·call524288, 524288) CALLFN(·call524288, 524288)
CALLFN(runtime·call1048576, 1048576) CALLFN(·call1048576, 1048576)
CALLFN(runtime·call2097152, 2097152) CALLFN(·call2097152, 2097152)
CALLFN(runtime·call4194304, 4194304) CALLFN(·call4194304, 4194304)
CALLFN(runtime·call8388608, 8388608) CALLFN(·call8388608, 8388608)
CALLFN(runtime·call16777216, 16777216) CALLFN(·call16777216, 16777216)
CALLFN(runtime·call33554432, 33554432) CALLFN(·call33554432, 33554432)
CALLFN(runtime·call67108864, 67108864) CALLFN(·call67108864, 67108864)
CALLFN(runtime·call134217728, 134217728) CALLFN(·call134217728, 134217728)
CALLFN(runtime·call268435456, 268435456) CALLFN(·call268435456, 268435456)
CALLFN(runtime·call536870912, 536870912) CALLFN(·call536870912, 536870912)
CALLFN(runtime·call1073741824, 1073741824) CALLFN(·call1073741824, 1073741824)
// bool cas(int32 *val, int32 old, int32 new) // bool cas(int32 *val, int32 old, int32 new)
// Atomically: // Atomically:

77
src/runtime/asm_amd64p32.s
View File

@ -310,11 +310,11 @@ TEXT runtime·morestack_noctxt(SB),NOSPLIT,$0
#define DISPATCH(NAME,MAXSIZE) \ #define DISPATCH(NAME,MAXSIZE) \
CMPL CX, $MAXSIZE; \ CMPL CX, $MAXSIZE; \
JA 3(PC); \ JA 3(PC); \
MOVL $NAME(SB), AX; \ MOVL $NAME(SB), AX; \
JMP AX JMP AX
// Note: can't just "JMP NAME(SB)" - bad inlining results. // Note: can't just "JMP NAME(SB)" - bad inlining results.
TEXT runtime·reflectcall(SB), NOSPLIT, $0-16 TEXT ·reflectcall(SB), NOSPLIT, $0-16
MOVLQZX argsize+8(FP), CX MOVLQZX argsize+8(FP), CX
DISPATCH(runtime·call16, 16) DISPATCH(runtime·call16, 16)
DISPATCH(runtime·call32, 32) DISPATCH(runtime·call32, 32)
@ -346,22 +346,9 @@ TEXT runtime·reflectcall(SB), NOSPLIT, $0-16
MOVL $runtime·badreflectcall(SB), AX MOVL $runtime·badreflectcall(SB), AX
JMP AX JMP AX
// Argument map for the callXX frames. Each has one stack map.
DATA gcargs_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gcargs_reflectcall<>+0x04(SB)/4, $10 // 5 words
DATA gcargs_reflectcall<>+0x08(SB)/1, $(const_BitsPointer+(const_BitsPointer<<2)+(const_BitsScalar<<4)+(const_BitsScalar<<6))
DATA gcargs_reflectcall<>+0x09(SB)/1, $(const_BitsPointer)
GLOBL gcargs_reflectcall<>(SB),RODATA,$12
// callXX frames have no locals
DATA gclocals_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gclocals_reflectcall<>+0x04(SB)/4, $0 // 0 locals
GLOBL gclocals_reflectcall<>(SB),RODATA,$8
#define CALLFN(NAME,MAXSIZE) \ #define CALLFN(NAME,MAXSIZE) \
TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
FUNCDATA $FUNCDATA_ArgsPointerMaps,gcargs_reflectcall<>(SB); \ NO_LOCAL_POINTERS; \
FUNCDATA $FUNCDATA_LocalsPointerMaps,gclocals_reflectcall<>(SB);\
/* copy arguments to stack */ \ /* copy arguments to stack */ \
MOVL argptr+4(FP), SI; \ MOVL argptr+4(FP), SI; \
MOVL argsize+8(FP), CX; \ MOVL argsize+8(FP), CX; \
@ -369,8 +356,8 @@ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
REP;MOVSB; \ REP;MOVSB; \
/* call function */ \ /* call function */ \
MOVL f+0(FP), DX; \ MOVL f+0(FP), DX; \
MOVL (DX), AX; \ MOVL (DX), AX; \
CALL AX; \ CALL AX; \
/* copy return values back */ \ /* copy return values back */ \
MOVL argptr+4(FP), DI; \ MOVL argptr+4(FP), DI; \
MOVL argsize+8(FP), CX; \ MOVL argsize+8(FP), CX; \
@ -382,33 +369,33 @@ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
REP;MOVSB; \ REP;MOVSB; \
RET RET
CALLFN(runtime·call16, 16) CALLFN(·call16, 16)
CALLFN(runtime·call32, 32) CALLFN(·call32, 32)
CALLFN(runtime·call64, 64) CALLFN(·call64, 64)
CALLFN(runtime·call128, 128) CALLFN(·call128, 128)
CALLFN(runtime·call256, 256) CALLFN(·call256, 256)
CALLFN(runtime·call512, 512) CALLFN(·call512, 512)
CALLFN(runtime·call1024, 1024) CALLFN(·call1024, 1024)
CALLFN(runtime·call2048, 2048) CALLFN(·call2048, 2048)
CALLFN(runtime·call4096, 4096) CALLFN(·call4096, 4096)
CALLFN(runtime·call8192, 8192) CALLFN(·call8192, 8192)
CALLFN(runtime·call16384, 16384) CALLFN(·call16384, 16384)
CALLFN(runtime·call32768, 32768) CALLFN(·call32768, 32768)
CALLFN(runtime·call65536, 65536) CALLFN(·call65536, 65536)
CALLFN(runtime·call131072, 131072) CALLFN(·call131072, 131072)
CALLFN(runtime·call262144, 262144) CALLFN(·call262144, 262144)
CALLFN(runtime·call524288, 524288) CALLFN(·call524288, 524288)
CALLFN(runtime·call1048576, 1048576) CALLFN(·call1048576, 1048576)
CALLFN(runtime·call2097152, 2097152) CALLFN(·call2097152, 2097152)
CALLFN(runtime·call4194304, 4194304) CALLFN(·call4194304, 4194304)
CALLFN(runtime·call8388608, 8388608) CALLFN(·call8388608, 8388608)
CALLFN(runtime·call16777216, 16777216) CALLFN(·call16777216, 16777216)
CALLFN(runtime·call33554432, 33554432) CALLFN(·call33554432, 33554432)
CALLFN(runtime·call67108864, 67108864) CALLFN(·call67108864, 67108864)
CALLFN(runtime·call134217728, 134217728) CALLFN(·call134217728, 134217728)
CALLFN(runtime·call268435456, 268435456) CALLFN(·call268435456, 268435456)
CALLFN(runtime·call536870912, 536870912) CALLFN(·call536870912, 536870912)
CALLFN(runtime·call1073741824, 1073741824) CALLFN(·call1073741824, 1073741824)
// bool cas(int32 *val, int32 old, int32 new) // bool cas(int32 *val, int32 old, int32 new)
// Atomically: // Atomically:

70
src/runtime/asm_arm.s
View File

@ -343,7 +343,7 @@ TEXT runtime·morestack_noctxt(SB),NOSPLIT,$-4-0
MOVW $NAME(SB), R1; \ MOVW $NAME(SB), R1; \
B (R1) B (R1)
TEXT runtime·reflectcall(SB),NOSPLIT,$-4-16 TEXT ·reflectcall(SB),NOSPLIT,$-4-16
MOVW argsize+8(FP), R0 MOVW argsize+8(FP), R0
DISPATCH(runtime·call16, 16) DISPATCH(runtime·call16, 16)
DISPATCH(runtime·call32, 32) DISPATCH(runtime·call32, 32)
@ -375,21 +375,9 @@ TEXT runtime·reflectcall(SB),NOSPLIT,$-4-16
MOVW $runtime·badreflectcall(SB), R1 MOVW $runtime·badreflectcall(SB), R1
B (R1) B (R1)
// Argument map for the callXX frames. Each has one stack map.
DATA gcargs_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gcargs_reflectcall<>+0x04(SB)/4, $8 // 4 words
DATA gcargs_reflectcall<>+0x08(SB)/1, $(const_BitsPointer+(const_BitsPointer<<2)+(const_BitsScalar<<4)+(const_BitsScalar<<6))
GLOBL gcargs_reflectcall<>(SB),RODATA,$12
// callXX frames have no locals
DATA gclocals_reflectcall<>+0x00(SB)/4, $1 // 1 stackmap
DATA gclocals_reflectcall<>+0x04(SB)/4, $0 // 0 locals
GLOBL gclocals_reflectcall<>(SB),RODATA,$8
#define CALLFN(NAME,MAXSIZE) \ #define CALLFN(NAME,MAXSIZE) \
TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
FUNCDATA $FUNCDATA_ArgsPointerMaps,gcargs_reflectcall<>(SB); \ NO_LOCAL_POINTERS; \
FUNCDATA $FUNCDATA_LocalsPointerMaps,gclocals_reflectcall<>(SB);\
/* copy arguments to stack */ \ /* copy arguments to stack */ \
MOVW argptr+4(FP), R0; \ MOVW argptr+4(FP), R0; \
MOVW argsize+8(FP), R2; \ MOVW argsize+8(FP), R2; \
@ -420,33 +408,33 @@ TEXT NAME(SB), WRAPPER, $MAXSIZE-16; \
SUB $1, R2, R2; \ SUB $1, R2, R2; \
B -5(PC) \ B -5(PC) \
CALLFN(runtime·call16, 16) CALLFN(·call16, 16)
CALLFN(runtime·call32, 32) CALLFN(·call32, 32)
CALLFN(runtime·call64, 64) CALLFN(·call64, 64)
CALLFN(runtime·call128, 128) CALLFN(·call128, 128)
CALLFN(runtime·call256, 256) CALLFN(·call256, 256)
CALLFN(runtime·call512, 512) CALLFN(·call512, 512)
CALLFN(runtime·call1024, 1024) CALLFN(·call1024, 1024)
CALLFN(runtime·call2048, 2048) CALLFN(·call2048, 2048)
CALLFN(runtime·call4096, 4096) CALLFN(·call4096, 4096)
CALLFN(runtime·call8192, 8192) CALLFN(·call8192, 8192)
CALLFN(runtime·call16384, 16384) CALLFN(·call16384, 16384)
CALLFN(runtime·call32768, 32768) CALLFN(·call32768, 32768)
CALLFN(runtime·call65536, 65536) CALLFN(·call65536, 65536)
CALLFN(runtime·call131072, 131072) CALLFN(·call131072, 131072)
CALLFN(runtime·call262144, 262144) CALLFN(·call262144, 262144)
CALLFN(runtime·call524288, 524288) CALLFN(·call524288, 524288)
CALLFN(runtime·call1048576, 1048576) CALLFN(·call1048576, 1048576)
CALLFN(runtime·call2097152, 2097152) CALLFN(·call2097152, 2097152)
CALLFN(runtime·call4194304, 4194304) CALLFN(·call4194304, 4194304)
CALLFN(runtime·call8388608, 8388608) CALLFN(·call8388608, 8388608)
CALLFN(runtime·call16777216, 16777216) CALLFN(·call16777216, 16777216)
CALLFN(runtime·call33554432, 33554432) CALLFN(·call33554432, 33554432)
CALLFN(runtime·call67108864, 67108864) CALLFN(·call67108864, 67108864)
CALLFN(runtime·call134217728, 134217728) CALLFN(·call134217728, 134217728)
CALLFN(runtime·call268435456, 268435456) CALLFN(·call268435456, 268435456)
CALLFN(runtime·call536870912, 536870912) CALLFN(·call536870912, 536870912)
CALLFN(runtime·call1073741824, 1073741824) CALLFN(·call1073741824, 1073741824)
// void jmpdefer(fn, sp); // void jmpdefer(fn, sp);
// called from deferreturn. // called from deferreturn.

30
src/runtime/stubs.go
View File

@ -252,3 +252,33 @@ func return0()
// thunk to call time.now. // thunk to call time.now.
func timenow() (sec int64, nsec int32) func timenow() (sec int64, nsec int32)
// in asm_*.s
// not called directly; definitions here supply type information for traceback.
func call16(fn, arg unsafe.Pointer, n, retoffset uint32)
func call32(fn, arg unsafe.Pointer, n, retoffset uint32)
func call64(fn, arg unsafe.Pointer, n, retoffset uint32)
func call128(fn, arg unsafe.Pointer, n, retoffset uint32)
func call256(fn, arg unsafe.Pointer, n, retoffset uint32)
func call512(fn, arg unsafe.Pointer, n, retoffset uint32)
func call1024(fn, arg unsafe.Pointer, n, retoffset uint32)
func call2048(fn, arg unsafe.Pointer, n, retoffset uint32)
func call4096(fn, arg unsafe.Pointer, n, retoffset uint32)
func call8192(fn, arg unsafe.Pointer, n, retoffset uint32)
func call16384(fn, arg unsafe.Pointer, n, retoffset uint32)
func call32768(fn, arg unsafe.Pointer, n, retoffset uint32)
func call65536(fn, arg unsafe.Pointer, n, retoffset uint32)
func call131072(fn, arg unsafe.Pointer, n, retoffset uint32)
func call262144(fn, arg unsafe.Pointer, n, retoffset uint32)
func call524288(fn, arg unsafe.Pointer, n, retoffset uint32)
func call1048576(fn, arg unsafe.Pointer, n, retoffset uint32)
func call2097152(fn, arg unsafe.Pointer, n, retoffset uint32)
func call4194304(fn, arg unsafe.Pointer, n, retoffset uint32)
func call8388608(fn, arg unsafe.Pointer, n, retoffset uint32)
func call16777216(fn, arg unsafe.Pointer, n, retoffset uint32)
func call33554432(fn, arg unsafe.Pointer, n, retoffset uint32)
func call67108864(fn, arg unsafe.Pointer, n, retoffset uint32)
func call134217728(fn, arg unsafe.Pointer, n, retoffset uint32)
func call268435456(fn, arg unsafe.Pointer, n, retoffset uint32)
func call536870912(fn, arg unsafe.Pointer, n, retoffset uint32)
func call1073741824(fn, arg unsafe.Pointer, n, retoffset uint32)