90 lines
3.7 KiB
Diff
90 lines
3.7 KiB
Diff
An all-in-one patch that fixes several issues:
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1) UnscaledCycleClock not fully implemented for ppc*-musl (disabled on musl)
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2) powerpc stacktrace implementation only works on glibc (disabled on musl)
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3) powerpc stacktrace implementation has ppc64 assumptions (fixed)
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4) examine_stack.cpp makes glibc assumptions on powerpc (fixed)
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--- third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc
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+++ third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc
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@@ -20,7 +20,7 @@
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#include <intrin.h>
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#endif
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-#if defined(__powerpc__) || defined(__ppc__)
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+#if (defined(__powerpc__) || defined(__ppc__)) && defined(__GLIBC__)
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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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@@ -59,7 +59,7 @@
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return base_internal::NominalCPUFrequency();
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}
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-#elif defined(__powerpc__) || defined(__ppc__)
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+#elif (defined(__powerpc__) || defined(__ppc__)) && defined(__GLIBC__)
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int64_t UnscaledCycleClock::Now() {
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#ifdef __GLIBC__
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--- third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.h
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+++ third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.h
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@@ -46,7 +46,7 @@
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// The following platforms have an implementation of a hardware counter.
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#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
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- defined(__powerpc__) || defined(__ppc__) || \
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+ ((defined(__powerpc__) || defined(__ppc__)) && defined(__GLIBC__)) || \
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defined(_M_IX86) || defined(_M_X64)
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#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1
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#else
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--- third_party/abseil-cpp/absl/debugging/internal/examine_stack.cc
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+++ third_party/abseil-cpp/absl/debugging/internal/examine_stack.cc
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@@ -27,6 +27,10 @@
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#include <csignal>
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#include <cstdio>
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+#if defined(__powerpc__)
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+#include <asm/ptrace.h>
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+#endif
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+
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#include "absl/base/attributes.h"
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#include "absl/base/internal/raw_logging.h"
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#include "absl/base/macros.h"
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@@ -55,8 +59,10 @@
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return reinterpret_cast<void*>(context->uc_mcontext.pc);
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#elif defined(__powerpc64__)
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return reinterpret_cast<void*>(context->uc_mcontext.gp_regs[32]);
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-#elif defined(__powerpc__)
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+#elif defined(__powerpc__) && defined(__GLIBC__)
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return reinterpret_cast<void*>(context->uc_mcontext.regs->nip);
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+#elif defined(__powerpc__)
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+ return reinterpret_cast<void*>(((struct pt_regs *)context->uc_regs)->nip);
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#elif defined(__riscv)
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return reinterpret_cast<void*>(context->uc_mcontext.__gregs[REG_PC]);
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#elif defined(__s390__) && !defined(__s390x__)
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--- third_party/abseil-cpp/absl/debugging/internal/stacktrace_config.h
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+++ third_party/abseil-cpp/absl/debugging/internal/stacktrace_config.h
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@@ -64,7 +64,7 @@
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#elif defined(__i386__) || defined(__x86_64__)
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#define ABSL_STACKTRACE_INL_HEADER \
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"absl/debugging/internal/stacktrace_x86-inl.inc"
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-#elif defined(__ppc__) || defined(__PPC__)
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+#elif (defined(__ppc__) || defined(__PPC__)) && defined(__GLIBC__)
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#define ABSL_STACKTRACE_INL_HEADER \
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"absl/debugging/internal/stacktrace_powerpc-inl.inc"
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#elif defined(__aarch64__)
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--- third_party/abseil-cpp/absl/debugging/internal/stacktrace_powerpc-inl.inc
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+++ third_party/abseil-cpp/absl/debugging/internal/stacktrace_powerpc-inl.inc
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@@ -130,8 +130,13 @@
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StacktracePowerPCGetLR(new_sp) == kernel_sigtramp_rt64_address) {
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const ucontext_t* signal_context =
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reinterpret_cast<const ucontext_t*>(uc);
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+#if defined(__powerpc64__)
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void **const sp_before_signal =
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reinterpret_cast<void**>(signal_context->uc_mcontext.gp_regs[PT_R1]);
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+#else
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+ void **const sp_before_signal =
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+ reinterpret_cast<void**>(signal_context->uc_mcontext.uc_regs->gregs[PT_R1]);
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+#endif
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// Check that alleged sp before signal is nonnull and is reasonably
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// aligned.
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if (sp_before_signal != nullptr &&
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