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read_child

Syntax

 
#include <debug/dbgcom.h>

void read_child (unsigned child_addr, void *buf, unsigned len);

Description

This function reads the memory of the debugged process starting at address child_addr for len bytes, and copies the data read to the buffer pointed to by buf. It is used primarily to save the original instruction at the point where a breakpoint instruction is inserted (to trigger a trap when the debuggee's code gets to that point). See section write_child.

Return Value

The function return zero if it has successfully transferred the data, non-zero otherwise (e.g., if the address in child_addr is outside the limits of the debuggee's code segment.

Portability

ANSI/ISO C No
POSIX No


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  Copyright 2004   by DJ Delorie     Updated Apr 2004