diff options
author | Jason Molenda <jsm@bugshack.cygnus.com> | 1999-07-07 20:19:36 +0000 |
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committer | Jason Molenda <jsm@bugshack.cygnus.com> | 1999-07-07 20:19:36 +0000 |
commit | a87029ef15e59af2cc0b27cb4024b0db313fa88e (patch) | |
tree | a5cc2d6f8ebdbbd957642e72e0e88cc5fe5cd2e1 /gdb/ser-go32.c | |
parent | 528824cc847e5a13831dd41e5aacb34679143c94 (diff) | |
download | gdb-a87029ef15e59af2cc0b27cb4024b0db313fa88e.tar.gz |
import gdb-1999-07-07 post reformat
Diffstat (limited to 'gdb/ser-go32.c')
-rw-r--r-- | gdb/ser-go32.c | 554 |
1 files changed, 286 insertions, 268 deletions
diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c index 17684884437..89db6f85c05 100644 --- a/gdb/ser-go32.c +++ b/gdb/ser-go32.c @@ -20,7 +20,8 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ #include "defs.h" #include "gdbcmd.h" @@ -153,21 +154,22 @@ extern long rawclock (void); #define CNT_ORUN 19 #define NCNT 20 -static int intrcnt; -static int cnts[NCNT]; -static char *cntnames[NCNT] = { +static int intrcnt; +static int cnts[NCNT]; +static char *cntnames[NCNT] = +{ /* h/w interrupt counts. */ - "mlsc", "nopend", "txrdy", "?3", - "rxrdy", "?5", "rls", "?7", - "?8", "?9", "?a", "?b", - "rxtout", "?d", "?e", "?f", + "mlsc", "nopend", "txrdy", "?3", + "rxrdy", "?5", "rls", "?7", + "?8", "?9", "?a", "?b", + "rxtout", "?d", "?e", "?f", /* s/w counts. */ - "rxcnt", "txcnt", "stray", "swoflo" + "rxcnt", "txcnt", "stray", "swoflo" }; #define COUNT(x) cnts[x]++ #else -#define COUNT(x) +#define COUNT(x) #endif /* Main interrupt controller port addresses. */ @@ -176,45 +178,59 @@ static char *cntnames[NCNT] = { #define ICU_MASK (ICU_BASE + 1) /* Original interrupt controller mask register. */ -unsigned char icu_oldmask; +unsigned char icu_oldmask; /* Maximum of 8 interrupts (we don't handle the slave icu yet). */ #define NINTR 8 static struct intrupt -{ - char inuse; - struct dos_ttystate *port; - _go32_dpmi_seginfo old_rmhandler; - _go32_dpmi_seginfo old_pmhandler; - _go32_dpmi_seginfo new_rmhandler; - _go32_dpmi_seginfo new_pmhandler; - _go32_dpmi_registers regs; -} intrupts[NINTR]; + { + char inuse; + struct dos_ttystate *port; + _go32_dpmi_seginfo old_rmhandler; + _go32_dpmi_seginfo old_pmhandler; + _go32_dpmi_seginfo new_rmhandler; + _go32_dpmi_seginfo new_pmhandler; + _go32_dpmi_registers regs; + } +intrupts[NINTR]; static struct dos_ttystate + { + int base; + int irq; + int refcnt; + struct intrupt *intrupt; + int fifo; + int baudrate; + unsigned char cbuf[CBSIZE]; + unsigned int first; + unsigned int count; + int txbusy; + unsigned char old_mcr; + int ferr; + int perr; + int oflo; + int msr; + } +ports[4] = { - int base; - int irq; - int refcnt; - struct intrupt *intrupt; - int fifo; - int baudrate; - unsigned char cbuf[CBSIZE]; - unsigned int first; - unsigned int count; - int txbusy; - unsigned char old_mcr; - int ferr; - int perr; - int oflo; - int msr; -} ports[4] = { - {COM1ADDR, 4}, - {COM2ADDR, 3}, - {COM3ADDR, 4}, - {COM4ADDR, 3} + { + COM1ADDR, 4 + } + , + { + COM2ADDR, 3 + } + , + { + COM3ADDR, 4 + } + , + { + COM4ADDR, 3 + } }; static int dos_open PARAMS ((serial_t scb, const char *name)); @@ -237,34 +253,34 @@ static int dos_getc (port) volatile struct dos_ttystate *port; { - int c; + int c; - if (port->count == 0) - return -1; + if (port->count == 0) + return -1; - c = port->cbuf[port->first]; - disable (); - port->first = (port->first + 1) & (CBSIZE - 1); - port->count--; - enable (); - return c; + c = port->cbuf[port->first]; + disable (); + port->first = (port->first + 1) & (CBSIZE - 1); + port->count--; + enable (); + return c; } - -static int + +static int dos_putc (c, port) int c; struct dos_ttystate *port; { - if (port->count >= CBSIZE - 1) - return -1; - port->cbuf[(port->first + port->count) & (CBSIZE - 1)] = c; - port->count++; - return 0; + if (port->count >= CBSIZE - 1) + return -1; + port->cbuf[(port->first + port->count) & (CBSIZE - 1)] = c; + port->count++; + return 0; } - + static void dos_comisr (irq) int irq; @@ -279,28 +295,28 @@ dos_comisr (irq) #endif port = intrupts[irq].port; - if (!port) + if (!port) { COUNT (CNT_STRAY); - return; /* not open */ + return; /* not open */ } while (1) { iir = inb (port, com_iir) & IIR_IMASK; - switch (iir) + switch (iir) { - + case IIR_RLS: lsr = inb (port, com_lsr); goto rx; - + case IIR_RXTOUT: case IIR_RXRDY: lsr = 0; - - rx: - do + + rx: + do { c = inb (port, com_data); if (lsr & (LSR_BI | LSR_FE | LSR_PE | LSR_OE)) @@ -324,12 +340,12 @@ dos_comisr (irq) } while ((lsr = inb (port, com_lsr)) & LSR_RXRDY); break; - + case IIR_MLSC: /* could be used to flowcontrol Tx */ port->msr = inb (port, com_msr); break; - + case IIR_TXRDY: port->txbusy = 0; break; @@ -343,7 +359,7 @@ dos_comisr (irq) break; } COUNT (iir); - } + } } #ifdef __STDC__ @@ -353,20 +369,21 @@ dos_comisr (irq) #endif #define ISR(x) static void ISRNAME(x)() {dos_comisr(x);} -ISR(0) ISR(1) ISR(2) ISR(3) -ISR(4) ISR(5) ISR(6) ISR(7) +ISR (0) ISR (1) ISR (2) ISR (3) +ISR (4) ISR (5) ISR (6) ISR (7) -typedef void (*isr_t)(); + typedef void (*isr_t) (); -static isr_t isrs[NINTR] = { - ISRNAME(0), ISRNAME(1), ISRNAME(2), ISRNAME(3), - ISRNAME(4), ISRNAME(5), ISRNAME(6), ISRNAME(7) + static isr_t isrs[NINTR] = + { + ISRNAME (0), ISRNAME (1), ISRNAME (2), ISRNAME (3), + ISRNAME (4), ISRNAME (5), ISRNAME (6), ISRNAME (7) }; - -static struct intrupt * -dos_hookirq (irq) + + static struct intrupt * + dos_hookirq (irq) unsigned int irq; { struct intrupt *intr; @@ -379,15 +396,15 @@ dos_hookirq (irq) intr = &intrupts[irq]; if (intr->inuse) return 0; - + vec = 0x08 + irq; isr = isrs[irq]; /* setup real mode handler */ _go32_dpmi_get_real_mode_interrupt_vector (vec, &intr->old_rmhandler); - intr->new_rmhandler.pm_selector = _go32_my_cs(); - intr->new_rmhandler.pm_offset = (u_long)isr; + intr->new_rmhandler.pm_selector = _go32_my_cs (); + intr->new_rmhandler.pm_offset = (u_long) isr; if (_go32_dpmi_allocate_real_mode_callback_iret (&intr->new_rmhandler, &intr->regs)) { @@ -398,15 +415,15 @@ dos_hookirq (irq) { return 0; } - + /* setup protected mode handler */ - _go32_dpmi_get_protected_mode_interrupt_vector(vec, &intr->old_pmhandler); + _go32_dpmi_get_protected_mode_interrupt_vector (vec, &intr->old_pmhandler); - intr->new_pmhandler.pm_selector = _go32_my_cs(); - intr->new_pmhandler.pm_offset = (u_long)isr; + intr->new_pmhandler.pm_selector = _go32_my_cs (); + intr->new_pmhandler.pm_offset = (u_long) isr; _go32_dpmi_allocate_iret_wrapper (&intr->new_pmhandler); - if (_go32_dpmi_set_protected_mode_interrupt_vector(vec, &intr->new_pmhandler)) + if (_go32_dpmi_set_protected_mode_interrupt_vector (vec, &intr->new_pmhandler)) { return 0; } @@ -440,15 +457,15 @@ dos_unhookirq (intr) /* remove real mode handler */ _go32_dpmi_set_real_mode_interrupt_vector (vec, &intr->old_rmhandler); _go32_dpmi_free_real_mode_callback (&intr->new_rmhandler); - + /* remove protected mode handler */ _go32_dpmi_set_protected_mode_interrupt_vector (vec, &intr->old_pmhandler); _go32_dpmi_free_iret_wrapper (&intr->new_pmhandler); intr->inuse = 0; } - + static int dos_open (scb, name) serial_t scb; @@ -484,38 +501,39 @@ dos_open (scb, name) } /* force access to ID reg */ - outb(port, com_cfcr, 0); - outb(port, com_iir, 0); - for (i = 0; i < 17; i++) { - if ((inb(port, com_iir) & 0x38) == 0) - goto ok; - (void) inb(port, com_data); /* clear recv */ - } + outb (port, com_cfcr, 0); + outb (port, com_iir, 0); + for (i = 0; i < 17; i++) + { + if ((inb (port, com_iir) & 0x38) == 0) + goto ok; + (void) inb (port, com_data); /* clear recv */ + } errno = ENODEV; return -1; ok: /* disable all interrupts in chip */ - outb(port, com_ier, 0); + outb (port, com_ier, 0); /* tentatively enable 16550 fifo, and see if it responds */ - outb(port, com_fifo, FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER); - sleep(1); - port->fifo = ((inb(port, com_iir) & IIR_FIFO_MASK) == IIR_FIFO_MASK); + outb (port, com_fifo, FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER); + sleep (1); + port->fifo = ((inb (port, com_iir) & IIR_FIFO_MASK) == IIR_FIFO_MASK); /* clear pending status reports. */ - (void) inb(port, com_lsr); - (void) inb(port, com_msr); + (void) inb (port, com_lsr); + (void) inb (port, com_msr); /* enable external interrupt gate (to avoid floating IRQ) */ - outb(port, com_mcr, MCR_IENABLE); + outb (port, com_mcr, MCR_IENABLE); /* hook up interrupt handler and initialise icu */ port->intrupt = dos_hookirq (port->irq); if (!port->intrupt) { - outb(port, com_mcr, 0); - outb(port, com_fifo, 0); + outb (port, com_mcr, 0); + outb (port, com_fifo, 0); errno = ENODEV; return -1; } @@ -523,7 +541,7 @@ ok: disable (); /* record port */ - port->intrupt->port = port; + port->intrupt->port = port; scb->fd = fd; /* clear rx buffer, tx busy flag and overflow count */ @@ -533,16 +551,16 @@ ok: /* set default baud rate and mode: 9600,8,n,1 */ i = dos_baudconv (port->baudrate = 9600); - outb(port, com_cfcr, CFCR_DLAB); - outb(port, com_dlbl, i & 0xff); - outb(port, com_dlbh, i >> 8); - outb(port, com_cfcr, CFCR_8BITS); + outb (port, com_cfcr, CFCR_DLAB); + outb (port, com_dlbl, i & 0xff); + outb (port, com_dlbh, i >> 8); + outb (port, com_cfcr, CFCR_8BITS); /* enable all interrupts */ - outb(port, com_ier, IER_ETXRDY | IER_ERXRDY | IER_ERLS | IER_EMSC); + outb (port, com_ier, IER_ETXRDY | IER_ERXRDY | IER_ERLS | IER_EMSC); /* enable DTR & RTS */ - outb(port, com_mcr, MCR_DTR | MCR_RTS | MCR_IENABLE); + outb (port, com_mcr, MCR_DTR | MCR_RTS | MCR_IENABLE); enable (); @@ -554,45 +572,45 @@ static void dos_close (scb) serial_t scb; { - struct dos_ttystate *port; - struct intrupt *intrupt; + struct dos_ttystate *port; + struct intrupt *intrupt; - if (!scb) - return; - - port = &ports[scb->fd]; - - if (port->refcnt-- > 1) - return; - - if (!(intrupt = port->intrupt)) - return; - - /* disable interrupts, fifo, flow control */ - disable (); - port->intrupt = 0; - intrupt->port = 0; - outb(port, com_fifo, 0); - outb(port, com_ier, 0); - enable (); - - /* unhook handler, and disable interrupt gate */ - dos_unhookirq (intrupt); - outb(port, com_mcr, 0); - - /* Check for overflow errors */ - if (port->oflo) - { - fprintf_unfiltered (gdb_stderr, - "Serial input overruns occurred.\n"); - fprintf_unfiltered (gdb_stderr, "This system %s handle %d baud.\n", - port->fifo ? "cannot" : "needs a 16550 to", - port->baudrate); - } -} + if (!scb) + return; + + port = &ports[scb->fd]; + + if (port->refcnt-- > 1) + return; + if (!(intrupt = port->intrupt)) + return; + + /* disable interrupts, fifo, flow control */ + disable (); + port->intrupt = 0; + intrupt->port = 0; + outb (port, com_fifo, 0); + outb (port, com_ier, 0); + enable (); + + /* unhook handler, and disable interrupt gate */ + dos_unhookirq (intrupt); + outb (port, com_mcr, 0); + + /* Check for overflow errors */ + if (port->oflo) + { + fprintf_unfiltered (gdb_stderr, + "Serial input overruns occurred.\n"); + fprintf_unfiltered (gdb_stderr, "This system %s handle %d baud.\n", + port->fifo ? "cannot" : "needs a 16550 to", + port->baudrate); + } +} + static int dos_noop (scb) serial_t scb; @@ -616,7 +634,7 @@ dos_readchar (scb, timeout) long then; int c; - then = rawclock() + (timeout * RAWHZ); + then = rawclock () + (timeout * RAWHZ); while ((c = dos_getc (port)) < 0) { if (timeout >= 0 && (rawclock () - then) >= 0) @@ -670,11 +688,11 @@ dos_flush_input (scb) serial_t scb; { struct dos_ttystate *port = &ports[scb->fd]; - disable(); + disable (); port->first = port->count = 0; if (port->fifo) - outb(port, com_fifo, FIFO_ENABLE|FIFO_RCV_RST|FIFO_TRIGGER); - enable(); + outb (port, com_fifo, FIFO_ENABLE | FIFO_RCV_RST | FIFO_TRIGGER); + enable (); } static void @@ -691,16 +709,16 @@ dos_baudconv (rate) int rate; { long x, err; - - if (rate <= 0) + + if (rate <= 0) return -1; -#define divrnd(n, q) (((n) * 2 / (q) + 1) / 2) /* divide and round off */ - x = divrnd(COMTICK, rate); +#define divrnd(n, q) (((n) * 2 / (q) + 1) / 2) /* divide and round off */ + x = divrnd (COMTICK, rate); if (x <= 0) return -1; - - err = divrnd(1000 * COMTICK, x * rate) - 1000; + + err = divrnd (1000 * COMTICK, x * rate) - 1000; if (err < 0) err = -err; if (err > SPEED_TOLERANCE) @@ -715,33 +733,33 @@ dos_setbaudrate (scb, rate) serial_t scb; int rate; { - struct dos_ttystate *port = &ports[scb->fd]; - - if (port->baudrate != rate) - { - int x; - unsigned char cfcr; - - x = dos_baudconv (rate); - if (x <= 0) - { - fprintf_unfiltered (gdb_stderr, "%d: impossible baudrate\n", rate); - errno = EINVAL; - return -1; - } - - disable (); - cfcr = inb (port, com_cfcr); - - outb(port, com_cfcr, CFCR_DLAB); - outb(port, com_dlbl, x & 0xff); - outb(port, com_dlbh, x >> 8); - outb(port, com_cfcr, cfcr); - port->baudrate = rate; - enable (); - } + struct dos_ttystate *port = &ports[scb->fd]; - return 0; + if (port->baudrate != rate) + { + int x; + unsigned char cfcr; + + x = dos_baudconv (rate); + if (x <= 0) + { + fprintf_unfiltered (gdb_stderr, "%d: impossible baudrate\n", rate); + errno = EINVAL; + return -1; + } + + disable (); + cfcr = inb (port, com_cfcr); + + outb (port, com_cfcr, CFCR_DLAB); + outb (port, com_dlbl, x & 0xff); + outb (port, com_dlbh, x >> 8); + outb (port, com_cfcr, cfcr); + port->baudrate = rate; + enable (); + } + + return 0; } static int @@ -749,28 +767,28 @@ dos_setstopbits (scb, num) serial_t scb; int num; { - struct dos_ttystate *port = &ports[scb->fd]; - unsigned char cfcr; - - disable (); - cfcr = inb (port, com_cfcr); - - switch (num) - { - case SERIAL_1_STOPBITS: - outb (port, com_cfcr, cfcr & ~CFCR_STOPB); - break; - case SERIAL_1_AND_A_HALF_STOPBITS: - case SERIAL_2_STOPBITS: - outb (port, com_cfcr, cfcr | CFCR_STOPB); - break; - default: - enable (); - return 1; - } - enable (); + struct dos_ttystate *port = &ports[scb->fd]; + unsigned char cfcr; - return 0; + disable (); + cfcr = inb (port, com_cfcr); + + switch (num) + { + case SERIAL_1_STOPBITS: + outb (port, com_cfcr, cfcr & ~CFCR_STOPB); + break; + case SERIAL_1_AND_A_HALF_STOPBITS: + case SERIAL_2_STOPBITS: + outb (port, com_cfcr, cfcr | CFCR_STOPB); + break; + default: + enable (); + return 1; + } + enable (); + + return 0; } static int @@ -784,27 +802,27 @@ dos_write (scb, str, len) long then; int cnt; - while (len > 0) - { - /* send the data, fifosize bytes at a time */ - cnt = fifosize > len ? len : fifosize; - port->txbusy = 1; - outportsb (port->base + com_data, str, cnt); - str += cnt; - len -= cnt; + while (len > 0) + { + /* send the data, fifosize bytes at a time */ + cnt = fifosize > len ? len : fifosize; + port->txbusy = 1; + outportsb (port->base + com_data, str, cnt); + str += cnt; + len -= cnt; #ifdef DOS_STATS - cnts[CNT_TX] += cnt; + cnts[CNT_TX] += cnt; #endif - /* wait for transmission to complete (max 1 sec) */ - then = rawclock() + RAWHZ; - while (port->txbusy) - { - if ((rawclock () - then) >= 0) - { - errno = EIO; - return SERIAL_ERROR; - } - } + /* wait for transmission to complete (max 1 sec) */ + then = rawclock () + RAWHZ; + while (port->txbusy) + { + if ((rawclock () - then) >= 0) + { + errno = EIO; + return SERIAL_ERROR; + } + } } return 0; } @@ -818,15 +836,15 @@ dos_sendbreak (scb) unsigned char cfcr; long then; - cfcr = inb(port, com_cfcr); - outb(port, com_cfcr, cfcr | CFCR_SBREAK); + cfcr = inb (port, com_cfcr); + outb (port, com_cfcr, cfcr | CFCR_SBREAK); /* 0.25 sec delay */ then = rawclock () + RAWHZ / 4; while ((rawclock () - then) < 0) continue; - outb(port, com_cfcr, cfcr); + outb (port, com_cfcr, cfcr); return 0; } @@ -861,7 +879,7 @@ dos_info (arg, from_tty) struct dos_ttystate *port; int i; - for (port = ports; port < &ports[4]; port++) + for (port = ports; port < &ports[4]; port++) { if (port->baudrate == 0) continue; @@ -870,7 +888,7 @@ dos_info (arg, from_tty) printf_filtered ("Addr:\t0x%03x (irq %d)\n", port->base, port->irq); printf_filtered ("16550:\t%s\n", port->fifo ? "yes" : "no"); printf_filtered ("Speed:\t%d baud\n", port->baudrate); - printf_filtered ("Errs:\tframing %d parity %d overflow %d\n\n", + printf_filtered ("Errs:\tframing %d parity %d overflow %d\n\n", port->ferr, port->perr, port->oflo); } @@ -896,63 +914,63 @@ _initialize_ser_dos () /* Mark fixed motherboard irqs as inuse. */ intrupts[0].inuse = /* timer tick */ intrupts[1].inuse = /* keyboard */ - intrupts[2].inuse = 1; /* slave icu */ - + intrupts[2].inuse = 1; /* slave icu */ + add_show_from_set ( - add_set_cmd ("com1base", class_obscure, var_zinteger, - (char *) &ports[0].base, - "Set COM1 base i/o port address.", - &setlist), - &showlist); + add_set_cmd ("com1base", class_obscure, var_zinteger, + (char *) &ports[0].base, + "Set COM1 base i/o port address.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com1irq", class_obscure, var_zinteger, - (char *) &ports[0].irq, - "Set COM1 interrupt request.", - &setlist), - &showlist); + add_set_cmd ("com1irq", class_obscure, var_zinteger, + (char *) &ports[0].irq, + "Set COM1 interrupt request.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com2base", class_obscure, var_zinteger, - (char *) &ports[1].base, - "Set COM2 base i/o port address.", - &setlist), - &showlist); + add_set_cmd ("com2base", class_obscure, var_zinteger, + (char *) &ports[1].base, + "Set COM2 base i/o port address.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com2irq", class_obscure, var_zinteger, - (char *) &ports[1].irq, - "Set COM2 interrupt request.", - &setlist), - &showlist); + add_set_cmd ("com2irq", class_obscure, var_zinteger, + (char *) &ports[1].irq, + "Set COM2 interrupt request.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com3base", class_obscure, var_zinteger, - (char *) &ports[2].base, - "Set COM3 base i/o port address.", - &setlist), - &showlist); + add_set_cmd ("com3base", class_obscure, var_zinteger, + (char *) &ports[2].base, + "Set COM3 base i/o port address.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com3irq", class_obscure, var_zinteger, - (char *) &ports[2].irq, - "Set COM3 interrupt request.", - &setlist), - &showlist); + add_set_cmd ("com3irq", class_obscure, var_zinteger, + (char *) &ports[2].irq, + "Set COM3 interrupt request.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com4base", class_obscure, var_zinteger, - (char *) &ports[3].base, - "Set COM4 base i/o port address.", - &setlist), - &showlist); + add_set_cmd ("com4base", class_obscure, var_zinteger, + (char *) &ports[3].base, + "Set COM4 base i/o port address.", + &setlist), + &showlist); add_show_from_set ( - add_set_cmd ("com4irq", class_obscure, var_zinteger, - (char *) &ports[3].irq, - "Set COM4 interrupt request.", - &setlist), - &showlist); + add_set_cmd ("com4irq", class_obscure, var_zinteger, + (char *) &ports[3].irq, + "Set COM4 interrupt request.", + &setlist), + &showlist); add_info ("serial", dos_info, "Print DOS serial port status."); |