26 lines
696 B
ArmAsm
26 lines
696 B
ArmAsm
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#define PROFILE_SUPPORT 1
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#include "crt0.S"
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.global __mcount
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__mcount:
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;; When a function is compiled for profiling, gcc creates code
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;; like this at the start of each profiled function:
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;;
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;; .global <func_name>
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;; <func_name>:
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;; bsr __mcount
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;; <...function's prologue...>
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;; <...function's body...>
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;;
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;; We must save all of the argument registers, extract the
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;; address of <func_name>, call _mcount_internal to do the
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;; real work and then restore the argument registers before
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;; returning.
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pushm r1-r4
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mov.l 16[r0], r1
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bsr __mcount_internal
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rtsd #16, r1-r4
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