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runtime: define racefuncenter and racefuncexit as ABIInternal

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They are called from compiler instrumented code as ABIInternal.
Define them as ABIInternal to avoid the wrappers and save some
stack space, to avoid nosplit overflow in -race -N -l build.

For #51247.

Change-Id: Iadad7d6da8ac03780a7b02b03b004c52d34e020a
Reviewed-on: https://go-review.googlesource.com/c/go/+/386715
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Cherry Mui 2022-02-17 19:43:49 -05:00
parent 20b177268f
commit d93cc8cb96
1 changed files with 6 additions and 2 deletions
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8
src/runtime/race_arm64.s
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@ -188,8 +188,12 @@ ret:
// func runtime·racefuncenter(pc uintptr) // func runtime·racefuncenter(pc uintptr)
// Called from instrumented code. // Called from instrumented code.
TEXT runtime·racefuncenter(SB), NOSPLIT, $0-8 TEXT runtime·racefuncenter<ABIInternal>(SB), NOSPLIT, $0-8
#ifdef GOEXPERIMENT_regabiargs
MOVD R0, R9 // callpc
#else
MOVD callpc+0(FP), R9 MOVD callpc+0(FP), R9
#endif
JMP racefuncenter<>(SB) JMP racefuncenter<>(SB)
// Common code for racefuncenter // Common code for racefuncenter
@ -205,7 +209,7 @@ TEXT racefuncenter<>(SB), NOSPLIT, $0-0
// func runtime·racefuncexit() // func runtime·racefuncexit()
// Called from instrumented code. // Called from instrumented code.
TEXT runtime·racefuncexit(SB), NOSPLIT, $0-0 TEXT runtime·racefuncexit<ABIInternal>(SB), NOSPLIT, $0-0
load_g load_g
MOVD g_racectx(g), R0 // race context MOVD g_racectx(g), R0 // race context
// void __tsan_func_exit(ThreadState *thr); // void __tsan_func_exit(ThreadState *thr);