52 lines
895 B
C
52 lines
895 B
C
/*
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* trace.c for mdb
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*/
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#include "mdb.h"
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#include <stdio.h>
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#include <sys/ptrace.h>
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#include "proto.h"
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/* mdbtrace()
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* Call ptrace and check for error if debugging running process
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* Otherwise read 'core' file
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*/
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PUBLIC long mdbtrace(req, pid, addr, data)
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int req, pid;
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long addr, data;
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{
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long val;
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int i;
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int segment;
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#ifdef DEBUG
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if (debug) Printf("ptrace: req=%d pid=%d addr=%lx data=%lx\n",
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req, pid, addr, data);
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#endif
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if (corepid < 0)
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{
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errno = 0;
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/* Call normal ptrace and check for error */
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val = ptrace(req, pid, addr, data);
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if (errno != 0) {
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do_error("mdb ptrace error ");
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mdb_error("\n");
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}
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#ifdef DEBUG
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if (debug) Printf("ptrace: val=>%lx\n", val);
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#endif
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return val;
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}
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else
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return read_core(req, addr, data);
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}
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/* Used by disassembler */
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PUBLIC u32_t peek_dword(addr)
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off_t addr;
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{
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return mdbtrace(T_GETINS, curpid, addr, 0L);
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}
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