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Fix compatibility with Android NDK r10d.

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This is a reland of the previous CL (r1433). r1433 did not achieve what
intended and failed the x86_64 build of Chrome with NDK r10c.
The workaround logic in this CL is identical to r1433, but the #define
magic is applied in a more appropriate proper place this time. Turns
out Breakpad already has an Android compatibility layer, which is
common/android/include. Piggybacking the fix there.

BUG=breakpad:642
R=fdegans@chromium.org, rmcilroy@chromium.org

Review URL: https://breakpad.appspot.com/3794002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1434 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
primiano@chromium.org 2015-03-16 14:12:20 +00:00
parent ee25f6794b
commit 9b2d7192a4
2 changed files with 20 additions and 17 deletions
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15
src/client/linux/dump_writer_common/thread_info.h
View file

@ -31,22 +31,7 @@
#define CLIENT_LINUX_DUMP_WRITER_COMMON_THREAD_INFO_H_
#include <sys/ucontext.h>
// TODO(primiano): remove this after Chromium has stably rolled to NDK r10d.
// Historical context: NDK releases < r10d had a typo in sys/user.h (mxcsr_mask
// instead of mxcr_mask), which is fixed in r10d. However, just switching to use
// the correct one (mxcr_mask) would put Breakpad in a state where it can be
// rolled in chromium only atomically with the r10d NDK. A revert of either
// project (android_tools, breakpad) would make the other one unrollable.
// This hack makes breakpad code compatible with both r10c and r10d NDKs,
// reducing the dependency entangling with android_tools.
#if defined (__ANDROID__)
#define mxcsr_mask mxcr_mask
#include <sys/user.h>
#undef mxcsr_mask
#else
#include <sys/user.h>
#endif
#include "client/linux/dump_writer_common/raw_context_cpu.h"
#include "common/memory.h"

22
src/common/android/include/sys/user.h
View file

@ -34,9 +34,11 @@
// glibc) and therefore avoid doing otherwise awkward #ifdefs in the code.
// The following quirks are currently handled by this file:
// - MIPS: Keep using forked definitions of user.h structs. The definition in
// the NDK is completely different.
// Internal bug b/18097715
// the NDK is completely different. Internal bug b/18097715
// - i386: Use the Android NDK but alias user_fxsr_struct > user_fpxregs_struct.
// - x86_64: Override a typo in user_fpregs_struct (mxcsr_mask -> mxcr_mask).
// The typo has been fixed in NDK r10d, but a preprocessor workaround is
// required to make breakpad build with r10c and lower (more details below).
// - Other platforms: Just use the Android NDK unchanged.
#ifdef __mips__
@ -113,8 +115,24 @@ struct user_fpregs_struct {
#else // __mips__
// TODO(primiano): remove this after Chromium has stably rolled to NDK r10d.
// Historical context: NDK releases < r10d had a typo in sys/user.h (mxcsr_mask
// instead of mxcr_mask), which is fixed in r10d. However, just switching to use
// the correct one (mxcr_mask) would put Breakpad in a state where it can be
// rolled in chromium only atomically with the r10d NDK. A revert of either
// project (android_tools, breakpad) would make the other one unrollable.
// This hack makes breakpad code compatible with both r10c and r10d NDKs,
// reducing the dependency entangling with android_tools.
#if defined(__x86_64__)
#define mxcsr_mask mxcr_mask
#endif
#include_next <sys/user.h>
#if defined(__x86_64__)
#undef mxcsr_mask
#endif
#ifdef __i386__
#ifdef __cplusplus
extern "C" {