Last change
on this file since 474 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
696 bytes
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Rev | Line | |
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[444] | 1 | #define PROFILE_SUPPORT 1 |
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| 2 | |
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| 3 | #include "crt0.S" |
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| 4 | |
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| 5 | .global __mcount |
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| 6 | __mcount: |
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| 7 | ;; When a function is compiled for profiling, gcc creates code |
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| 8 | ;; like this at the start of each profiled function: |
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| 9 | ;; |
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| 10 | ;; .global <func_name> |
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| 11 | ;; <func_name>: |
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| 12 | ;; bsr __mcount |
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| 13 | ;; <...function's prologue...> |
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| 14 | ;; <...function's body...> |
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| 15 | ;; |
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| 16 | ;; We must save all of the argument registers, extract the |
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| 17 | ;; address of <func_name>, call _mcount_internal to do the |
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| 18 | ;; real work and then restore the argument registers before |
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| 19 | ;; returning. |
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| 20 | |
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| 21 | pushm r1-r4 |
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| 22 | mov.l 16[r0], r1 |
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| 23 | bsr __mcount_internal |
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| 24 | rtsd #16, r1-r4 |
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| 25 | |
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