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https://gitlab.alpinelinux.org/alpine/aports.git
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0f1a6d44b3
my attempt at unblocking the Chromium security upgrade, while waiting for !82919 to make it buildable with Clang 20
118 lines
4.3 KiB
Diff
118 lines
4.3 KiB
Diff
fixes some sanitizers on ppc64le
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From 95fa3d049e35b141f0c2c3b3b0abb6c1b3702e46 Mon Sep 17 00:00:00 2001
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From: Daniel Kolesa <daniel@octaforge.org>
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Date: Wed, 6 Apr 2022 00:54:03 +0200
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Subject: [PATCH 07/19] compiler-rt: ppc sanitizer fixes
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---
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.../lib/sanitizer_common/sanitizer_linux.cpp | 4 ++
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.../sanitizer_platform_limits_posix.cpp | 2 +-
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.../sanitizer_stoptheworld_linux_libcdep.cpp | 2 +-
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compiler-rt/lib/xray/xray_powerpc64.inc | 37 ++++++++++++++++++-
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4 files changed, 42 insertions(+), 3 deletions(-)
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diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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index 24c6acaa9..5d79dea48 100644
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--- a/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_linux.cpp
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+++ b/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_linux.cpp
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@@ -74,6 +74,10 @@
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#include <sys/utsname.h>
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#endif
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+#if SANITIZER_LINUX && defined(__powerpc__)
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+#include <asm/ptrace.h>
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+#endif
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+
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#if SANITIZER_LINUX && !SANITIZER_ANDROID
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#include <sys/personality.h>
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#endif
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diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
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index fc01498aa..2fd663d88 100644
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--- a/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
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+++ b/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
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@@ -94,7 +94,7 @@
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# include <utime.h>
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# include <sys/ptrace.h>
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# if defined(__mips64) || defined(__aarch64__) || defined(__arm__) || \
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- defined(__hexagon__) || defined(__loongarch__) ||SANITIZER_RISCV64
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+ defined(__hexagon__) || defined(__loongarch__) || defined(__powerpc__) || SANITIZER_RISCV64
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# include <asm/ptrace.h>
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# ifdef __arm__
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typedef struct user_fpregs elf_fpregset_t;
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diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
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index 13b90ce9b..f8702753e 100644
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--- a/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
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+++ b/compiler-rt-16.0.6.src/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
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@@ -31,7 +31,7 @@
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#include <sys/types.h> // for pid_t
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#include <sys/uio.h> // for iovec
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#include <elf.h> // for NT_PRSTATUS
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-#if (defined(__aarch64__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64) && \
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+#if (defined(__aarch64__) || defined(__powerpc__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64) && \
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!SANITIZER_ANDROID
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// GLIBC 2.20+ sys/user does not include asm/ptrace.h
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# include <asm/ptrace.h>
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diff --git a/compiler-rt/lib/xray/xray_powerpc64.inc b/compiler-rt/lib/xray/xray_powerpc64.inc
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index 7e872b5b4..9616a09d8 100644
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--- a/compiler-rt-16.0.6.src/lib/xray/xray_powerpc64.inc
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+++ b/compiler-rt-16.0.6.src/lib/xray/xray_powerpc64.inc
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@@ -12,7 +12,7 @@
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#include <cstdint>
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#include <mutex>
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-#ifdef __linux__
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+#ifdef __GLIBC__
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#include <sys/platform/ppc.h>
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#elif defined(__FreeBSD__)
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#include <sys/types.h>
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@@ -27,6 +27,14 @@ uint64_t __ppc_get_timebase_freq (void)
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sysctlbyname("kern.timecounter.tc.timebase.frequency", &tb_freq, &length, nullptr, 0);
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return tb_freq;
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}
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+#else
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+#include <cctype>
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+#include <cstdio>
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+#include <cstring>
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+#include <cstdlib>
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+
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+#define __ppc_get_timebase __builtin_ppc_get_timebase
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+
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#endif
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#include "xray_defs.h"
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@@ -41,7 +48,35 @@ ALWAYS_INLINE uint64_t readTSC(uint8_t &CPU) XRAY_NEVER_INSTRUMENT {
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inline uint64_t getTSCFrequency() XRAY_NEVER_INSTRUMENT {
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static std::mutex M;
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std::lock_guard<std::mutex> Guard(M);
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+#ifdef __GLIBC__
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return __ppc_get_timebase_freq();
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+#else
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+ /* FIXME: a less dirty implementation? */
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+ static uint64_t base;
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+ if (!base) {
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+ FILE *f = fopen("/proc/cpuinfo", "rb");
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+ if (f) {
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+ ssize_t nr;
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+ /* virtually always big enough to hold the line */
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+ char buf[512];
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+ while (fgets(buf, sizeof(buf), f)) {
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+ char *ret = strstr(buf, "timebase");
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+ if (!ret) {
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+ continue;
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+ }
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+ ret += sizeof("timebase") - 1;
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+ ret = strchr(ret, ':');
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+ if (!ret) {
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+ continue;
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+ }
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+ base = strtoul(ret + 1, nullptr, 10);
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+ break;
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+ }
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+ fclose(f);
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+ }
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+ }
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+ return base;
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+#endif
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}
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inline bool probeRequiredCPUFeatures() XRAY_NEVER_INSTRUMENT {
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