-
-/* Use the program counter to determine the contents and size
- of a breakpoint instruction. If no target-dependent macro
- BREAKPOINT_FROM_PC has been defined to implement this function,
- assume that the breakpoint doesn't depend on the PC, and
- use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros.
- Return a pointer to a string of bytes that encode a breakpoint
- instruction, stores the length of the string to *lenptr,
- and optionally adjust the pc to point to the correct memory location
- for inserting the breakpoint. */
-
-unsigned char *
-memory_breakpoint_from_pc (pcptr, lenptr)
- CORE_ADDR *pcptr;
- int *lenptr;
-{
- /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a
- breakpoint. On some machines, breakpoints are handled by the
- target environment and we don't have to worry about them here. */
-#ifdef BIG_BREAKPOINT
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
- {
- static unsigned char big_break_insn[] = BIG_BREAKPOINT;
- *lenptr = sizeof (big_break_insn);
- return big_break_insn;
- }
-#endif
-#ifdef LITTLE_BREAKPOINT
- if (TARGET_BYTE_ORDER != BIG_ENDIAN)
- {
- static unsigned char little_break_insn[] = LITTLE_BREAKPOINT;
- *lenptr = sizeof (little_break_insn);
- return little_break_insn;
- }
-#endif
-#ifdef BREAKPOINT
- {
- static unsigned char break_insn[] = BREAKPOINT;
- *lenptr = sizeof (break_insn);
- return break_insn;
- }
-#endif
- *lenptr = 0;
- return NULL;
-}
-
-
-/* Insert a breakpoint on targets that don't have any better breakpoint
- support. We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction. ADDR is the target
- location in the target machine. CONTENTS_CACHE is a pointer to
- memory allocated for saving the target contents. It is guaranteed
- by the caller to be long enough to save BREAKPOINT_LEN bytes (this
- is accomplished via BREAKPOINT_MAX). */
+/* Insert a breakpoint on targets that don't have any better
+ breakpoint support. We read the contents of the target location
+ and stash it, then overwrite it with a breakpoint instruction.
+ BP_TGT->placed_address is the target location in the target
+ machine. BP_TGT->shadow_contents is some memory allocated for
+ saving the target contents. It is guaranteed by the caller to be
+ long enough to save BREAKPOINT_LEN bytes (this is accomplished via
+ BREAKPOINT_MAX). */