return mips_expect_timeout (string, remote_timeout);
}
-/* Read the required number of characters into the given buffer (which
- is assumed to be large enough). The only failure is a timeout. */
-static int
-mips_getstring (char *string, int n)
-{
- char *p = string;
- int c;
-
- immediate_quit++;
- while (n > 0)
- {
- c = serial_readchar (mips_desc, remote_timeout);
-
- if (c == SERIAL_TIMEOUT)
- {
- fprintf_unfiltered (gdb_stderr,
- "Failed to read %d characters from target (TIMEOUT)\n", n);
- immediate_quit--;
- return 0;
- }
-
- *p++ = c;
- n--;
- }
-
- immediate_quit--;
- return 1;
-}
-
/* Read a character from the remote, aborting on error. Returns
SERIAL_TIMEOUT on timeout (since that's what serial_readchar()
returns). FIXME: If we see the string mips_monitor_prompt from the
return memory_remove_breakpoint (addr, contents_cache);
}
-#if 0 /* currently not used */
-/* PMON does not currently provide support for the debug mode 'b'
- commands to manipulate breakpoints. However, if we wanted to use
- the monitor breakpoints (rather than the GDB BREAK_INSN version)
- then this code performs the work needed to leave debug mode,
- set/clear the breakpoint, and then return to debug mode. */
-
-#define PMON_MAX_BP (33) /* 32 SW, 1 HW */
-static CORE_ADDR mips_pmon_bp_info[PMON_MAX_BP];
-/* NOTE: The code relies on this vector being zero-initialised by the system */
-
-static int
-pmon_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
-{
- int status;
-
- if (monitor_supports_breakpoints)
- {
- char tbuff[12]; /* space for breakpoint command */
- int bpnum;
- CORE_ADDR bpaddr;
-
- /* PMON does not support debug level breakpoint set/remove: */
- if (mips_exit_debug ())
- mips_error ("Failed to exit debug mode");
-
- sprintf (tbuff, "b %08x\r", addr);
- mips_send_command (tbuff, 0);
-
- mips_expect ("Bpt ");
-
- if (!mips_getstring (tbuff, remote_timeout))
- return 1;
- tbuff[2] = '\0'; /* terminate the string */
- if (sscanf (tbuff, "%d", &bpnum) != 1)
- {
- fprintf_unfiltered (gdb_stderr,
- "Invalid decimal breakpoint number from target: %s\n", tbuff);
- return 1;
- }
-
- mips_expect (" = ");
-
- /* Lead in the hex number we are expecting: */
- tbuff[0] = '0';
- tbuff[1] = 'x';
-
- /* FIXME!! only 8 bytes! need to expand for Bfd64;
- which targets return 64-bit addresses? PMON returns only 32! */
- if (!mips_getstring (&tbuff[2], 8))
- return 1;
- tbuff[10] = '\0'; /* terminate the string */
-
- if (sscanf (tbuff, "0x%08x", &bpaddr) != 1)
- {
- fprintf_unfiltered (gdb_stderr,
- "Invalid hex address from target: %s\n", tbuff);
- return 1;
- }
-
- if (bpnum >= PMON_MAX_BP)
- {
- fprintf_unfiltered (gdb_stderr,
- "Error: Returned breakpoint number %d outside acceptable range (0..%d)\n",
- bpnum, PMON_MAX_BP - 1);
- return 1;
- }
-
- if (bpaddr != addr)
- fprintf_unfiltered (gdb_stderr, "Warning: Breakpoint addresses do not match: 0x%x != 0x%x\n", addr, bpaddr);
-
- mips_pmon_bp_info[bpnum] = bpaddr;
-
- mips_expect ("\r\n");
- mips_expect (mips_monitor_prompt);
-
- mips_enter_debug ();
-
- return 0;
- }
-
- return mips_store_word (addr, BREAK_INSN, contents_cache);
-}
-
-static int
-pmon_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
-{
- if (monitor_supports_breakpoints)
- {
- int bpnum;
- char tbuff[7]; /* enough for delete breakpoint command */
-
- for (bpnum = 0; bpnum < PMON_MAX_BP; bpnum++)
- if (mips_pmon_bp_info[bpnum] == addr)
- break;
-
- if (bpnum >= PMON_MAX_BP)
- {
- fprintf_unfiltered (gdb_stderr,
- "pmon_remove_breakpoint: Failed to find breakpoint at address 0x%s\n",
- paddr_nz (addr));
- return 1;
- }
-
- if (mips_exit_debug ())
- mips_error ("Failed to exit debug mode");
-
- sprintf (tbuff, "db %02d\r", bpnum);
-
- mips_send_command (tbuff, -1);
- /* NOTE: If the breakpoint does not exist then a "Bpt <dd> not
- set" message will be returned. */
-
- mips_enter_debug ();
-
- return 0;
- }
-
- return target_write_memory (addr, contents_cache, BREAK_INSN_SIZE);
-}
-#endif
-
-
/* Tell whether this target can support a hardware breakpoint. CNT
is the number of hardware breakpoints already installed. This
implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro. */
}
-/* Insert a hardware breakpoint. This works only on LSI targets, which
- implement ordinary breakpoints using hardware facilities. */
-
-static int
-remote_mips_insert_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
-{
- if (strcmp (target_shortname, "lsi") == 0)
- return mips_insert_breakpoint (addr, contents_cache);
- else
- return -1;
-}
-
-
-/* Remove a hardware breakpoint. This works only on LSI targets, which
- implement ordinary breakpoints using hardware facilities. */
-
-static int
-remote_mips_remove_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
-{
- if (strcmp (target_shortname, "lsi") == 0)
- return mips_remove_breakpoint (addr, contents_cache);
- else
- return -1;
-}
-
/* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0
for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
watchpoint. */
projects / deliverable / binutils-gdb.git / blobdiff