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| author | Russ Cox <rsc@golang.org> | 2012-04-10 10:09:27 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2012-04-10 10:09:27 -0400 |
| commit | 3d462449f670e2c0a810a6ef3bfc732a117f3cf7 (patch) | |
| tree | 5a7fdcbbba7b83038b8e8b12fc7c6b3d0627c5bf /src | |
| parent | 35d260fa4c1952079083b8868e9be5e4c77f70dc (diff) | |
| download | go-3d462449f670e2c0a810a6ef3bfc732a117f3cf7.tar.xz | |
8a, 8l: add PREFETCH instructions
R=ken2
CC=golang-dev
https://golang.org/cl/5992082
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/8a/lex.c | 4 | ||||
| -rw-r--r-- | src/cmd/8l/8.out.h | 5 | ||||
| -rw-r--r-- | src/cmd/8l/optab.c | 10 | ||||
| -rw-r--r-- | src/pkg/runtime/asm_386.s | 3 |
4 files changed, 20 insertions, 2 deletions
diff --git a/src/cmd/8a/lex.c b/src/cmd/8a/lex.c index c54e4fe462..5d361f53c5 100644 --- a/src/cmd/8a/lex.c +++ b/src/cmd/8a/lex.c @@ -667,6 +667,10 @@ struct "MFENCE", LTYPE0, AMFENCE, "SFENCE", LTYPE0, ASFENCE, "EMMS", LTYPE0, AEMMS, + "PREFETCHT0", LTYPE2, APREFETCHT0, + "PREFETCHT1", LTYPE2, APREFETCHT1, + "PREFETCHT2", LTYPE2, APREFETCHT2, + "PREFETCHNTA", LTYPE2, APREFETCHNTA, 0 }; diff --git a/src/cmd/8l/8.out.h b/src/cmd/8l/8.out.h index 9d2751cf0a..e13f1d3454 100644 --- a/src/cmd/8l/8.out.h +++ b/src/cmd/8l/8.out.h @@ -451,6 +451,11 @@ enum as ASFENCE, AEMMS, + + APREFETCHT0, + APREFETCHT1, + APREFETCHT2, + APREFETCHNTA, ALAST }; diff --git a/src/cmd/8l/optab.c b/src/cmd/8l/optab.c index 856482290d..bb2e4705a5 100644 --- a/src/cmd/8l/optab.c +++ b/src/cmd/8l/optab.c @@ -349,6 +349,11 @@ uchar ysvrs[] = Ym, Ynone, Zm_o, 2, 0 }; +uchar yprefetch[] = +{ + Ym, Ynone, Zm_o, 2, + 0, +}; Optab optab[] = /* as, ytab, andproto, opcode */ @@ -761,5 +766,10 @@ Optab optab[] = { AEMMS, ynone, Pm, 0x77 }, + { APREFETCHT0, yprefetch, Pm, 0x18,(01) }, + { APREFETCHT1, yprefetch, Pm, 0x18,(02) }, + { APREFETCHT2, yprefetch, Pm, 0x18,(03) }, + { APREFETCHNTA, yprefetch, Pm, 0x18,(00) }, + 0 }; diff --git a/src/pkg/runtime/asm_386.s b/src/pkg/runtime/asm_386.s index 3ab34d34cb..f3de78cbb9 100644 --- a/src/pkg/runtime/asm_386.s +++ b/src/pkg/runtime/asm_386.s @@ -417,8 +417,7 @@ TEXT runtime·atomicstore64(SB), 7, $0 TEXT runtime·prefetch(SB), 7, $0 MOVL 4(SP), AX - // PREFETCHNTA (AX) - BYTE $0x0f; BYTE $0x18; BYTE $0x00 + PREFETCHNTA (AX) RET // void jmpdefer(fn, sp); |