This is a fix for the following crash observed in 2.6.29-rc3: http://lkml.org/lkml/2009/1/29/150 On ARM it doesn't make sense to trace a naked function because then mcount is called without stack and frame pointer being set up and there is no chance to restore the lr register to the value before mcount was called. Reported-by: Matthias Kaehlcke <matthias@kaehlcke.net> Tested-by: Matthias Kaehlcke <matthias@kaehlcke.net>
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| @@ -52,7 +52,15 @@ · 51 unmodified lines | |||
| 52 | #define __deprecated __attribute__((deprecated)) | 52 | #define __deprecated __attribute__((deprecated)) |
| 53 | #define __packed __attribute__((packed)) | 53 | #define __packed __attribute__((packed)) |
| 54 | #define __weak __attribute__((weak)) | 54 | #define __weak __attribute__((weak)) |
| 55 | #define __naked __attribute__((naked)) | 55 | |
| 56 | /* | ||
| 57 | * it doesn't make sense on ARM (currently the only user of __naked) to trace | ||
| 58 | * naked functions because then mcount is called without stack and frame pointer | ||
| 59 | * being set up and there is no chance to restore the lr register to the value | ||
| 60 | * before mcount was called. | ||
| 61 | */ | ||
| 62 | #define __naked __attribute__((naked)) notrace | ||
| 63 | |||
| 56 | #define __noreturn __attribute__((noreturn)) | 64 | #define __noreturn __attribute__((noreturn)) |
| 57 | 65 | ||
| 58 | /* | 66 | /* |