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https://github.com/adtools/clib2.git
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91bcdea2a2
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
104 lines
1.8 KiB
C
104 lines
1.8 KiB
C
#include "profile_gmon.h"
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#include <exec/exec.h>
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#include <proto/exec.h>
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#include <stddef.h>
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void
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__mcount(uint32 frompc, uint32 selfpc)
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{
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uint16 *frompcindex;
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struct tostruct *top, *prevtop;
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struct gmonparam *p;
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int32 toindex;
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p = &_gmonparam;
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if (p->state != kGmonProfOn) return;
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p->state = kGmonProfBusy;
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/*
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* Check if the PC is inside our text segment.
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* Really should be...
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*/
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frompc -= p->lowpc;
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selfpc -= p->lowpc;
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if (frompc > p->textsize) goto done;
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#if (HASHFRACTION & (HASHFRACTION-1)) == 0
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if (p->hashfraction == HASHFRACTION)
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{
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frompcindex = &p->froms[(size_t)(frompc / (HASHFRACTION *
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sizeof(*p->froms)))];
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}
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else
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#endif
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{
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frompcindex = &p->froms[(size_t)(frompc / (p->hashfraction *
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sizeof(*p->froms)))];
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}
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toindex = *frompcindex;
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if (toindex == 0)
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{
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/* first time down this arc */
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toindex = ++p->tos[0].link;
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if (toindex >= p->tolimit)
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/* Ouch! Overflow */
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goto overflow;
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*frompcindex = (uint16)toindex;
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top = &p->tos[toindex];
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top->selfpc = selfpc;
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top->count = 1;
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top->link = 0;
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goto done;
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}
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top = &p->tos[toindex];
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if (top->selfpc == selfpc)
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{
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/* arc at front of chain */
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top->count++;
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goto done;
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}
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for (;;)
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{
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if (top->link == 0)
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{
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toindex = ++p->tos[0].link;
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if (toindex >= p->tolimit)
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goto overflow;
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top = &p->tos[toindex];
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top->selfpc = selfpc;
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top->count = 1;
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top->link = *frompcindex;
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*frompcindex = (uint16)toindex;
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goto done;
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}
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prevtop = top;
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top = &p->tos[top->link];
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if (top->selfpc == selfpc)
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{
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top->count++;
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toindex = prevtop->link;
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prevtop->link = top->link;
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top->link = *frompcindex;
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*frompcindex = (uint16)toindex;
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goto done;
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}
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}
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done:
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p->state = kGmonProfOn;
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return;
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overflow:
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p->state = kGmonProfError;
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return;
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}
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