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runtime: add address sanitizer support for ppc64le

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updates #44853

Change-Id: I71905ee1bcb99ce7300bbed2daad3617d2643c53
Reviewed-on: https://go-review.googlesource.com/c/go/+/408814
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Archana Ravindar <aravind5@in.ibm.com>
This commit is contained in:
Archana R 2022-05-26 05:24:38 -05:00 committed by Lynn Boger
parent 62125c9b79
commit 9e810997c0
5 changed files with 91 additions and 4 deletions
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2
misc/cgo/testsanitizers/cc_test.go
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@ -527,7 +527,7 @@ func mSanSupported(goos, goarch string) bool {
func aSanSupported(goos, goarch string) bool {
switch goos {
case "linux":
return goarch == "amd64" || goarch == "arm64" || goarch == "riscv64"
return goarch == "amd64" || goarch == "arm64" || goarch == "riscv64" || goarch == "ppc64le"
default:
return false
}

2
src/cmd/dist/test.go vendored
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@ -836,7 +836,7 @@ func (t *tester) registerTests() {
if t.supportedBuildmode("plugin") {
t.registerTest("testplugin", "../misc/cgo/testplugin", t.goTest(), t.timeout(600), ".")
}
if gohostos == "linux" && goarch == "amd64" {
if gohostos == "linux" && (goarch == "amd64" || goarch == "ppc64le") {
t.registerTest("testasan", "../misc/cgo/testasan", "go", "run", ".")
}
if goos == "linux" {

2
src/cmd/internal/sys/supported.go
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@ -40,7 +40,7 @@ func MSanSupported(goos, goarch string) bool {
func ASanSupported(goos, goarch string) bool {
switch goos {
case "linux":
return goarch == "arm64" || goarch == "amd64" || goarch == "riscv64"
return goarch == "arm64" || goarch == "amd64" || goarch == "riscv64" || goarch == "ppc64le"
default:
return false
}

2
src/runtime/asan/asan.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build asan && linux && (arm64 || amd64 || riscv64)
//go:build asan && linux && (arm64 || amd64 || riscv64 || ppc64le)
package asan

87
src/runtime/asan_ppc64le.s Normal file
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@ -0,0 +1,87 @@
// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build asan
#include "go_asm.h"
#include "textflag.h"
#define RARG0 R3
#define RARG1 R4
#define RARG2 R5
#define RARG3 R6
#define FARG R12
// Called from instrumented code.
// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT runtime·doasanread(SB),NOSPLIT|NOFRAME,$0-32
MOVD addr+0(FP), RARG0
MOVD sz+8(FP), RARG1
MOVD sp+16(FP), RARG2
MOVD pc+24(FP), RARG3
// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
MOVD $__asan_read_go(SB), FARG
BR asancall<>(SB)
// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT runtime·doasanwrite(SB),NOSPLIT|NOFRAME,$0-32
MOVD addr+0(FP), RARG0
MOVD sz+8(FP), RARG1
MOVD sp+16(FP), RARG2
MOVD pc+24(FP), RARG3
// void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc);
MOVD $__asan_write_go(SB), FARG
BR asancall<>(SB)
// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
TEXT runtime·asanunpoison(SB),NOSPLIT|NOFRAME,$0-16
MOVD addr+0(FP), RARG0
MOVD sz+8(FP), RARG1
// void __asan_unpoison_go(void *addr, uintptr_t sz);
MOVD $__asan_unpoison_go(SB), FARG
BR asancall<>(SB)
// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
TEXT runtime·asanpoison(SB),NOSPLIT|NOFRAME,$0-16
MOVD addr+0(FP), RARG0
MOVD sz+8(FP), RARG1
// void __asan_poison_go(void *addr, uintptr_t sz);
MOVD $__asan_poison_go(SB), FARG
BR asancall<>(SB)
// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
TEXT runtime·asanregisterglobals(SB),NOSPLIT|NOFRAME,$0-16
MOVD addr+0(FP), RARG0
MOVD n+8(FP), RARG1
// void __asan_register_globals_go(void *addr, uintptr_t n);
MOVD $__asan_register_globals_go(SB), FARG
BR asancall<>(SB)
// Switches SP to g0 stack and calls (FARG). Arguments already set.
TEXT asancall<>(SB), NOSPLIT, $0-0
// LR saved in generated prologue
// Get info from the current goroutine
MOVD runtime·tls_g(SB), R10 // g offset in TLS
MOVD 0(R10), g
MOVD g_m(g), R7 // m for g
MOVD R1, R16 // callee-saved, preserved across C call
MOVD m_g0(R7), R10 // g0 for m
CMP R10, g // same g0?
BEQ call // already on g0
MOVD (g_sched+gobuf_sp)(R10), R1 // switch R1
call:
// prepare frame for C ABI
SUB $32, R1 // create frame for callee saving LR, CR, R2 etc.
RLDCR $0, R1, $~15, R1 // align SP to 16 bytes
MOVD FARG, CTR // address of function to be called
MOVD R0, 0(R1) // clear back chain pointer
BL (CTR)
MOVD $0, R0 // C code can clobber R0 set it back to 0
MOVD R16, R1 // restore R1;
MOVD runtime·tls_g(SB), R10 // find correct g
MOVD 0(R10), g
RET
// tls_g, g value for each thread in TLS
GLOBL runtime·tls_g+0(SB), TLSBSS+DUPOK, $8