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Description: unset CALL_MCOUNT for __libc_do_syscall |
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unset CALL_MCOUNT before __libc_do_syscall, because it only supports Thumb-2 |
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and ARM mode, not Thumb-1; and because profiling this internal routine |
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is of dubious value. |
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Origin: https://bugs.launchpad.net/linaro-toolchain-misc/+bug/605030/+attachment/1484534/+files/libc-do-syscall.S |
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Author: Peter Pearse <peter.pearse@linaro.org> |
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Bug-Linaro: https://bugs.launchpad.net/linaro-toolchain-misc/+bug/605030 |
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Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/605030 |
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Reviewed-by: Steve Langasek <steve.langasek@linaro.org> |
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|
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Index: glibc-2.14.1/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S |
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=================================================================== |
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--- glibc-2.14.1.orig/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S |
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+++ glibc-2.14.1/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S |
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@@ -32,6 +32,12 @@ |
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#undef CALL_MCOUNT |
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#define CALL_MCOUNT |
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|
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+/* |
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+ * PMP Work round for https://bugs.launchpad.net/gcc-linaro/+bug/605030 |
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+ */ |
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+#undef CALL_MCOUNT |
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+#define CALL_MCOUNT |
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+ |
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ENTRY (__libc_do_syscall) |
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.fnstart |
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push {r7, lr} |
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