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| author | Matthew Leach <matthew.leach@arm.com> | 2013-11-28 10:59:38 +0000 |
|---|---|---|
| committer | Richard Earnshaw <rearnsha@gcc.gnu.org> | 2013-11-28 10:59:38 +0000 |
| commit | cceeb9a978fefd34dd6c3cc0dfc594e9eef1e14a (patch) | |
| tree | 85f01629835f234fd552da8db3b4e653d414b57e /libgcc/config | |
| parent | 506cb36189212c2237b9c2e617a57edda3ecd736 (diff) | |
| download | gcc-cceeb9a978fefd34dd6c3cc0dfc594e9eef1e14a.tar.gz | |
linux-unwind.h (aarch64_fallback_frame_state): Check for correct opcodes on BE.
2013-11-26 Matthew Leach <matthew.leach@arm.com>
* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state): Check
for correct opcodes on BE.
From-SVN: r205479
Diffstat (limited to 'libgcc/config')
| -rw-r--r-- | libgcc/config/aarch64/linux-unwind.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h index fde4d1495e7..8b0d7fe39e1 100644 --- a/libgcc/config/aarch64/linux-unwind.h +++ b/libgcc/config/aarch64/linux-unwind.h @@ -25,6 +25,19 @@ #include <signal.h> #include <sys/ucontext.h> + +/* Since insns are always stored LE, on a BE system the opcodes will + be loaded byte-reversed. Therefore, define two sets of opcodes, + one for LE and one for BE. */ + +#if __AARCH64EB__ +#define MOVZ_X8_8B 0x681180d2 +#define SVC_0 0x010000d4 +#else +#define MOVZ_X8_8B 0xd2801168 +#define SVC_0 0xd4000001 +#endif + #define MD_FALLBACK_FRAME_STATE_FOR aarch64_fallback_frame_state static _Unwind_Reason_Code @@ -55,7 +68,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context, 0xd2801168 movz x8, #0x8b 0xd4000001 svc 0x0 */ - if (pc[0] != 0xd2801168 || pc[1] != 0xd4000001) + if (pc[0] != MOVZ_X8_8B || pc[1] != SVC_0) { return _URC_END_OF_STACK; } |