diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 14 | ||||
| -rw-r--r-- | gdb/remote-mips.c | 117 |
2 files changed, 131 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 8186727..9779d04 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,17 @@ +2010-03-10 Kevin Buettner <kevinb@redhat.com> + + * remote-mips.c (close_ports, mips_initialize_cleanups) + (mips_exit_cleanups, mips_send_command, mips_open, pmon_open) + (ddb_open, lsi_open, mips_remove_breakpoint, mips_remove_watchpoint) + (mips_stopped_by_watchpoint, send_srec, pmon_checkset) + (pmon_make_fastrec, pmon_check_ack, mips_expect_download) + (pmon_check_entry_address, pmon_check_total, pmon_end_download) + (pmon_download, pmon_load_fast, _initialize_remote_mips): Add + comments describing each of these functions. + (mips_enter_debug, mips_exit_debug, common_open) + (mips_signal_from_protocol, pmon_makeb64, pmon_zeroset): Add + blank line after the comment describing the function. + 2010-03-10 Jan Kratochvil <jan.kratochvil@redhat.com> * solib-svr4.c (svr4_exec_displacement): Return now success, new diff --git a/gdb/remote-mips.c b/gdb/remote-mips.c index b763175..3e12365 100644 --- a/gdb/remote-mips.c +++ b/gdb/remote-mips.c @@ -451,6 +451,9 @@ static int monitor_warnings; inferior_ptid. */ static ptid_t remote_mips_ptid; +/* Close any ports which might be open. Reset certain globals indicating + the state of those ports. */ + static void close_ports (void) { @@ -1290,18 +1293,25 @@ mips_request (int cmd, return rresponse; } +/* Cleanup associated with mips_initialize(). */ + static void mips_initialize_cleanups (void *arg) { mips_initializing = 0; } +/* Cleanup associated with mips_exit_debug(). */ + static void mips_exit_cleanups (void *arg) { mips_exiting = 0; } +/* Send a command and wait for that command to be echoed back. Wait, + too, for the following prompt. */ + static void mips_send_command (const char *cmd, int prompt) { @@ -1313,6 +1323,7 @@ mips_send_command (const char *cmd, int prompt) } /* Enter remote (dbx) debug mode: */ + static void mips_enter_debug (void) { @@ -1343,6 +1354,7 @@ mips_enter_debug (void) } /* Exit remote (dbx) debug mode, returning to the monitor prompt: */ + static int mips_exit_debug (void) { @@ -1505,6 +1517,7 @@ mips_initialize (void) } /* Open a connection to the remote board. */ + static void common_open (struct target_ops *ops, char *name, int from_tty, enum mips_monitor_type new_monitor, @@ -1629,6 +1642,8 @@ device is attached to the target board (e.g., /dev/ttya).\n" xfree (serial_port_name); } +/* Open a connection to an IDT board. */ + static void mips_open (char *name, int from_tty) { @@ -1652,12 +1667,16 @@ mips_open (char *name, int from_tty) common_open (&mips_ops, name, from_tty, MON_IDT, monitor_prompt); } +/* Open a connection to a PMON board. */ + static void pmon_open (char *name, int from_tty) { common_open (&pmon_ops, name, from_tty, MON_PMON, "PMON> "); } +/* Open a connection to a DDB board. */ + static void ddb_open (char *name, int from_tty) { @@ -1672,6 +1691,8 @@ rockhopper_open (char *name, int from_tty) common_open (&rockhopper_ops, name, from_tty, MON_ROCKHOPPER, "NEC01>"); } +/* Open a connection to an LSI board. */ + static void lsi_open (char *name, int from_tty) { @@ -1735,6 +1756,7 @@ mips_resume (struct target_ops *ops, /* Return the signal corresponding to SIG, where SIG is the number which the MIPS protocol uses for the signal. */ + static enum target_signal mips_signal_from_protocol (int sig) { @@ -2324,6 +2346,8 @@ mips_insert_breakpoint (struct gdbarch *gdbarch, return memory_insert_breakpoint (gdbarch, bp_tgt); } +/* Remove a breakpoint. */ + static int mips_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt) @@ -2382,6 +2406,8 @@ mips_insert_watchpoint (CORE_ADDR addr, int len, int type) return 0; } +/* Remove a watchpoint. */ + int mips_remove_watchpoint (CORE_ADDR addr, int len, int type) { @@ -2391,6 +2417,9 @@ mips_remove_watchpoint (CORE_ADDR addr, int len, int type) return 0; } +/* Test to see if a watchpoint has been hit. Return 1 if so; return 0, + if not. */ + int mips_stopped_by_watchpoint (void) { @@ -2685,6 +2714,11 @@ mips_common_breakpoint (%s): Got error: 0x%x\n", return 0; } +/* Send one S record as specified by SREC of length LEN, starting + at ADDR. Note, however, that ADDR is not used except to provide + a useful message to the user in the event that a NACK is received + from the board. */ + static void send_srec (char *srec, int len, CORE_ADDR addr) { @@ -2905,6 +2939,7 @@ static char encoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01 at a time (range 0..63). Keep a checksum if required (passed pointer non-NULL). The function returns the number of encoded characters written into the buffer. */ + static int pmon_makeb64 (unsigned long v, char *p, int n, int *chksum) { @@ -2949,6 +2984,7 @@ pmon_makeb64 (unsigned long v, char *p, int n, int *chksum) /* Shorthand function (that could be in-lined) to output the zero-fill escape sequence into the data stream. */ + static int pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum) { @@ -2961,6 +2997,20 @@ pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum) return (recsize + count + 2); } +/* Add the checksum specified by *VALUE to end of the record under + construction. *BUF specifies the location at which to begin + writing characters comprising the checksum information. RECSIZE + specifies the size of the record constructed thus far. (A trailing + NUL character may be present in the buffer holding the record, but + the record size does not include this character.) + + Return the total size of the record after adding the checksum escape, + the checksum itself, and the trailing newline. + + The checksum specified by *VALUE is zeroed out prior to returning. + Additionally, *BUF is updated to refer to the location just beyond + the record elements added by this call. */ + static int pmon_checkset (int recsize, char **buff, int *value) { @@ -2991,6 +3041,32 @@ pmon_checkset (int recsize, char **buff, int *value) /* NOTE: This constant depends on the monitor being used. This value is for PMON 5.x on the Cogent Vr4300 board. */ +/* Create a FastLoad format record. + + *OUTBUF is the buffer into which a FastLoad formatted record is + written. On return, the pointer position represented by *OUTBUF + is updated to point at the end of the data, i.e. the next position + in the buffer that may be written. No attempt is made to NUL- + terminate this portion of the record written to the buffer. + + INBUF contains the binary input data from which the FastLoad + formatted record will be built. *INPTR is an index into this + buffer. *INPTR is updated as the input is consumed. Thus, on + return, the caller has access to the position of the next input + byte yet to be processed. INAMOUNT is the size, in bytes, of the + input data. + + *RECSIZE will be written with the size of the record written to the + output buffer prior to returning. This size does not include a + NUL-termination byte as none is written to the output buffer. + + *CSUM is the output buffer checksum. It is updated as data is + written to the output buffer. + + *ZEROFILL is the current number of 3-byte zero sequences that have + been encountered. It is both an input and an output to this + function. */ + static void pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr, int inamount, int *recsize, unsigned int *csum, @@ -3048,6 +3124,10 @@ pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr, return; } +/* Attempt to read an ACK. If an ACK is not read in a timely manner, + output the message specified by MESG. Return -1 for failure, 0 + for success. */ + static int pmon_check_ack (char *mesg) { @@ -3090,6 +3170,12 @@ pmon_start_download (void) } } +/* Look for the string specified by STRING sent from the target board + during a download operation. If the string in question is not + seen, output an error message, remove the temporary file, if + appropriate, and return 0. Otherwise, return 1 to indicate + success. */ + static int mips_expect_download (char *string) { @@ -3104,6 +3190,15 @@ mips_expect_download (char *string) return 1; } +/* Look for messages from the target board associated with the entry + address. + + NOTE: This function doesn't indicate success or failure, so we + have no way to determine whether or not the output from the board + was correctly seen. However, given that other items are checked + after this, it seems unlikely that those checks will pass if this + check doesn't first (silently) pass. */ + static void pmon_check_entry_address (char *entry_address, int final) { @@ -3114,6 +3209,10 @@ pmon_check_entry_address (char *entry_address, int final) mips_expect ("\r\n"); } +/* Look for messages from the target board showing the total number of + bytes downloaded to the board. Output 1 for success if the tail + end of the message was read correctly, 0 otherwise. */ + static int pmon_check_total (int bintotal) { @@ -3124,6 +3223,13 @@ pmon_check_total (int bintotal) return mips_expect_download (" bytes\r\n"); } +/* Look for the termination messages associated with the end of + a download to the board. + + Also, when `tftp_in_use' is set, issue the load command to the + board causing the file to be transferred. (This is done prior + to looking for the above mentioned termination messages.) */ + static void pmon_end_download (int final, int bintotal) { @@ -3190,6 +3296,10 @@ pmon_end_download (int final, int bintotal) remove (tftp_localname); /* Remove temporary file */ } +/* Write the buffer specified by BUFFER of length LENGTH to either + the board or the temporary file that'll eventually be transferred + to the board. */ + static void pmon_download (char *buffer, int length) { @@ -3199,6 +3309,9 @@ pmon_download (char *buffer, int length) serial_write (udp_in_use ? udp_desc : mips_desc, buffer, length); } +/* Open object or executable file, FILE, and send it to the board + using the FastLoad format. */ + static void pmon_load_fast (char *file) { @@ -3430,6 +3543,10 @@ pmon_command (char *args, int from_tty) extern initialize_file_ftype _initialize_remote_mips; /* -Wmissing-prototypes */ +/* Initialize mips_ops, lsi_ops, ddb_ops, pmon_ops, and rockhopper_ops. + Create target specific commands and perform other initializations + specific to this file. */ + void _initialize_remote_mips (void) { |