From c628b528e091211bd746e5c9b18b5bc7298d01f3 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Fri, 19 Apr 2013 15:26:17 +0000 Subject: [PATCH] serial_write: change prototype to take a void-pointer buffer. While remote.c works with "char *" buffers most of the time, other remote targets have binary-ish-er protocols, and choose to use "unsigned char" throughout, like e.g., remote-mips.c or remote-m32r-sdi.c. That results in -Wpointer-sign warnings in those targets, unless we add casts in calls to serial_write. Since serial_write is only concerned about sending raw host bytes out, and serial_ops->write_prim already works with "void *"/"size_t", a similar interface to the "write" or "send" system calls, I find it natural to change serial_write's prototype accordingly, avoiding the need for casts. Tested on x86_64 Fedora 17, and also by building x86_64-mingw32 and DJGPP/go32 -hosted gdbs. gdb/ 2013-04-19 Pedro Alves * ser-base.c (ser_base_write): Change prototype -- take 'void *' buffer and size_t size. Adjust. * ser-base.h (ser_base_write): Adjust. * ser-go32.c (cnts): Change type to size_t. (dos_write): Change prototype -- take 'void *' buffer and size_t size. Adjust. (dos_info): Print elements of 'cnts' as unsigned long. * serial.c (serial_write): Likewise. * serial.h (serial_write): Adjust. (struct serial_ops) : Change prototype -- take 'void *' buffer and size_t size. Adjust. --- gdb/ChangeLog | 14 ++++++++++++++ gdb/ser-base.c | 9 +++++---- gdb/ser-base.h | 2 +- gdb/ser-go32.c | 21 +++++++++++---------- gdb/serial.c | 16 +++++++++------- gdb/serial.h | 6 +++--- 6 files changed, 43 insertions(+), 25 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 4ca6617bf5..49448b6c49 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,17 @@ +2013-04-19 Pedro Alves + + * ser-base.c (ser_base_write): Change prototype -- take 'void *' + buffer and size_t size. Adjust. + * ser-base.h (ser_base_write): Adjust. + * ser-go32.c (cnts): Change type to size_t. + (dos_write): Change prototype -- take 'void *' + buffer and size_t size. Adjust. + (dos_info): Print elements of 'cnts' as unsigned long. + * serial.c (serial_write): Likewise. + * serial.h (serial_write): Adjust. + (struct serial_ops) : Change prototype -- take 'void *' + buffer and size_t size. Adjust. + 2013-04-19 Pedro Alves * c-lang.c (evaluate_subexp_c): Cast result of obstack_base to diff --git a/gdb/ser-base.c b/gdb/ser-base.c index c602650b2e..52c5726493 100644 --- a/gdb/ser-base.c +++ b/gdb/ser-base.c @@ -440,17 +440,18 @@ ser_base_readchar (struct serial *scb, int timeout) } int -ser_base_write (struct serial *scb, const char *str, int len) +ser_base_write (struct serial *scb, const void *buf, size_t count) { + const char *str = buf; int cc; - while (len > 0) + while (count > 0) { - cc = scb->ops->write_prim (scb, str, len); + cc = scb->ops->write_prim (scb, str, count); if (cc < 0) return 1; - len -= cc; + count -= cc; str += cc; } return 0; diff --git a/gdb/ser-base.h b/gdb/ser-base.h index 175bf20904..e5fe9e111b 100644 --- a/gdb/ser-base.h +++ b/gdb/ser-base.h @@ -45,7 +45,7 @@ extern int ser_base_setbaudrate (struct serial *scb, int rate); extern int ser_base_setstopbits (struct serial *scb, int rate); extern int ser_base_drain_output (struct serial *scb); -extern int ser_base_write (struct serial *scb, const char *str, int len); +extern int ser_base_write (struct serial *scb, const void *buf, size_t count); extern void ser_base_async (struct serial *scb, int async_p); extern int ser_base_readchar (struct serial *scb, int timeout); diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c index 7d76720e0b..9b321df49e 100644 --- a/gdb/ser-go32.c +++ b/gdb/ser-go32.c @@ -148,7 +148,7 @@ typedef unsigned long u_long; #define NCNT 20 static int intrcnt; -static int cnts[NCNT]; +static size_t cnts[NCNT]; static char *cntnames[NCNT] = { /* h/w interrupt counts. */ @@ -230,7 +230,7 @@ static int dos_open (struct serial *scb, const char *name); static void dos_raw (struct serial *scb); static int dos_readchar (struct serial *scb, int timeout); static int dos_setbaudrate (struct serial *scb, int rate); -static int dos_write (struct serial *scb, const char *str, int len); +static int dos_write (struct serial *scb, const void *buf, size_t count); static void dos_close (struct serial *scb); static serial_ttystate dos_get_tty_state (struct serial *scb); static int dos_set_tty_state (struct serial *scb, serial_ttystate state); @@ -787,26 +787,27 @@ dos_setstopbits (struct serial *scb, int num) } static int -dos_write (struct serial *scb, const char *str, int len) +dos_write (struct serial *scb, const void *buf, size_t count) { volatile struct dos_ttystate *port = &ports[scb->fd]; - int fifosize = port->fifo ? 16 : 1; + size_t fifosize = port->fifo ? 16 : 1; long then; - int cnt; + size_t cnt; + const char *str = buf; - while (len > 0) + while (count > 0) { /* Send the data, fifosize bytes at a time. */ - cnt = fifosize > len ? len : fifosize; + cnt = fifosize > count ? count : fifosize; port->txbusy = 1; /* Francisco Pastor says OUTSB messes up the communications with UARTs with FIFOs. */ #ifdef UART_FIFO_WORKS outportsb (port->base + com_data, str, cnt); str += cnt; - len -= cnt; + count -= cnt; #else - for ( ; cnt > 0; cnt--, len--) + for ( ; cnt > 0; cnt--, count--) outportb (port->base + com_data, *str++); #endif #ifdef DOS_STATS @@ -904,7 +905,7 @@ dos_info (char *arg, int from_tty) printf_filtered ("\nTotal interrupts: %d\n", intrcnt); for (i = 0; i < NCNT; i++) if (cnts[i]) - printf_filtered ("%s:\t%d\n", cntnames[i], cnts[i]); + printf_filtered ("%s:\t%lu\n", cntnames[i], (unsigned long) cnts[i]); #endif } diff --git a/gdb/serial.c b/gdb/serial.c index 3202b0f6ba..ee3f1ea4b1 100644 --- a/gdb/serial.c +++ b/gdb/serial.c @@ -398,14 +398,15 @@ serial_readchar (struct serial *scb, int timeout) } int -serial_write (struct serial *scb, const char *str, int len) +serial_write (struct serial *scb, const void *buf, size_t count) { if (serial_logfp != NULL) { - int count; + const char *str = buf; + size_t c; - for (count = 0; count < len; count++) - serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0); + for (c = 0; c < count; c++) + serial_logchar (serial_logfp, 'w', str[c] & 0xff, 0); /* Make sure that the log file is as up-to-date as possible, in case we are getting ready to dump core or something. */ @@ -413,9 +414,10 @@ serial_write (struct serial *scb, const char *str, int len) } if (serial_debug_p (scb)) { - int count; + const char *str = buf; + size_t c; - for (count = 0; count < len; count++) + for (c = 0; c < count; c++) { fprintf_unfiltered (gdb_stdlog, "["); serial_logchar (gdb_stdlog, 'w', str[count] & 0xff, 0); @@ -424,7 +426,7 @@ serial_write (struct serial *scb, const char *str, int len) gdb_flush (gdb_stdlog); } - return (scb->ops->write (scb, str, len)); + return (scb->ops->write (scb, buf, count)); } void diff --git a/gdb/serial.h b/gdb/serial.h index a91c8b812a..7a97e282a0 100644 --- a/gdb/serial.h +++ b/gdb/serial.h @@ -104,10 +104,10 @@ enum serial_rc { extern int serial_readchar (struct serial *scb, int timeout); -/* Write LEN chars from STRING to the port SCB. Returns 0 for +/* Write COUNT bytes from BUF to the port SCB. Returns 0 for success, non-zero for failure. */ -extern int serial_write (struct serial *scb, const char *str, int len); +extern int serial_write (struct serial *scb, const void *buf, size_t count); /* Write a printf style string onto the serial port. */ @@ -256,7 +256,7 @@ struct serial_ops void (*close) (struct serial *); int (*fdopen) (struct serial *, int fd); int (*readchar) (struct serial *, int timeout); - int (*write) (struct serial *, const char *str, int len); + int (*write) (struct serial *, const void *buf, size_t count); /* Discard pending output */ int (*flush_output) (struct serial *); /* Discard pending input */ -- 2.34.1