From 966f47b470ffbdcce7241a1a1d00f73d1ea65970 Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Mon, 9 Dec 1996 02:27:59 +0000 Subject: [PATCH] * callback.c: #include (os_error): New function. (default_callback): Add os_error. --- sim/common/ChangeLog | 37 +++++ sim/common/callback.c | 422 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 459 insertions(+) create mode 100644 sim/common/callback.c diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index de13851..7cfaf1e 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,3 +1,40 @@ +Sun Dec 8 18:22:06 1996 Doug Evans + + * callback.c: #include + (os_error): New function. + (default_callback): Add os_error. + +Mon Nov 25 19:44:35 1996 Doug Evans + + * Make-common.in (Makefile): Set CONFIG_HEADERS="". + * aclocal.m4: Mark the fact that --enable-sim-bswap isn't host + specific. + (SIM_AC_OUTPUT): Don't build Makefile if CONFIG_FILES="". + +Wed Nov 20 01:11:04 1996 Doug Evans + + * run.c: #include ../common/config.h, tconfig.h. + (myname): New static global. + (main): Recognize new options -a, -c. Also recognize -h if h8/300. + Only process -c ifdef SIM_HAVE_SIMCACHE. + Only process -p/-s ifdef SIM_HAVE_PROFILE. + Parse program name from argv[0] and use in error messages. + Pass sim_args to sim_open. Pass prog_args to sim_create_inferior. + Add support for incomplete h8/300 termination indicators. + (usage): Make more verbose. + * aclocal.m4,config.in,tconfig.in,configure.in,configure: New files. + * Makefile.in,Make-common.in,callback.c: New files. + * nltvals.def,gentmap.c,gentvals.sh: New files. + +Tue Nov 12 13:34:00 1996 Dawn Perchik + + * run.c: Include stdarg.h if __STDC__. + +Tue Oct 15 11:16:31 1996 Jeffrey A Law (law@cygnus.com) + + * run.c (main): Don't print out anything if the signal + number is zero (ie no signal). + Tue Oct 15 11:20:44 1996 Michael Meissner * run.c (main): Print out if the program raised a signal. diff --git a/sim/common/callback.c b/sim/common/callback.c new file mode 100644 index 0000000..764d4b6 --- /dev/null +++ b/sim/common/callback.c @@ -0,0 +1,422 @@ +/* Host callback routines for GDB. + Copyright 1995, 1996 Free Software Foundation, Inc. + Contributed by Cygnus Support. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + 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. */ + +/* This file provides a standard way for targets to talk to the host OS + level. */ + +#include "ansidecl.h" +#ifdef ANSI_PROTOTYPES +#include +#else +#include +#endif +#include +#ifdef HAVE_STDLIB_H +#include +#endif +#include +#include +#include +#include "callback.h" +#include "targ-vals.h" + +static int os_init PARAMS ((host_callback *)); +static int os_shutdown PARAMS ((host_callback *)); +static int os_unlink PARAMS ((host_callback *, const char *)); +static long os_time PARAMS ((host_callback *, long *)); +static int os_system PARAMS ((host_callback *, const char *)); +static int os_rename PARAMS ((host_callback *, const char *, const char *)); +static int os_write_stdout PARAMS ((host_callback *, const char *, int)); +static int os_write PARAMS ((host_callback *, int, const char *, int)); +static int os_read_stdin PARAMS ((host_callback *, char *, int)); +static int os_read PARAMS ((host_callback *, int, char *, int)); +static int os_open PARAMS ((host_callback *, const char *, int)); +static int os_lseek PARAMS ((host_callback *, int, long, int)); +static int os_isatty PARAMS ((host_callback *, int)); +static int os_get_errno PARAMS ((host_callback *)); +static int os_close PARAMS ((host_callback *, int)); +static int fdmap PARAMS ((host_callback *, int)); +static int fdbad PARAMS ((host_callback *, int)); +static int wrap PARAMS ((host_callback *, int)); + +/* Set the callback copy of errno from what we see now. */ + +static int +wrap (p, val) + host_callback *p; + int val; +{ + p->last_errno = errno; + return val; +} + +/* Make sure the FD provided is ok. If not, return non-zero + and set errno. */ + +static int +fdbad (p, fd) + host_callback *p; + int fd; +{ + if (fd < 0 || fd > MAX_CALLBACK_FDS || !p->fdopen[fd]) + { + p->last_errno = EINVAL; + return -1; + } + return 0; +} + +static int +fdmap (p, fd) + host_callback *p; + int fd; +{ + return p->fdmap[fd]; +} + +static int +os_close (p, fd) + host_callback *p; + int fd; +{ + int result; + + result = fdbad (p, fd); + if (result) + return result; + result = wrap (p, close (fdmap (p, fd))); + return result; +} + +static int +os_get_errno (p) + host_callback *p; +{ + return host_to_target_errno (p->last_errno); +} + + +static int +os_isatty (p, fd) + host_callback *p; + int fd; +{ + int result; + + result = fdbad (p, fd); + if (result) + return result; + result = wrap (p, isatty (fdmap (p, fd))); + return result; +} + +static int +os_lseek (p, fd, off, way) + host_callback *p; + int fd; + long off; + int way; +{ + int result; + + result = fdbad (p, fd); + if (result) + return result; + result = lseek (fdmap (p, fd), off, way); + return result; +} + +static int +os_open (p, name, flags) + host_callback *p; + const char *name; + int flags; +{ + int i; + for (i = 0; i < MAX_CALLBACK_FDS; i++) + { + if (!p->fdopen[i]) + { + int f = open (name, target_to_host_open (flags)); + if (f < 0) + { + p->last_errno = errno; + return f; + } + p->fdopen[i] = 1; + p->fdmap[i] = f; + return i; + } + } + p->last_errno = EMFILE; + return -1; +} + +static int +os_read (p, fd, buf, len) + host_callback *p; + int fd; + char *buf; + int len; +{ + int result; + + result = fdbad (p, fd); + if (result) + return result; + result = wrap (p, read (fdmap (p, fd), buf, len)); + return result; +} + +static int +os_read_stdin (p, buf, len) + host_callback *p; + char *buf; + int len; +{ + return wrap (p, read (0, buf, len)); +} + +static int +os_write (p, fd, buf, len) + host_callback *p; + int fd; + const char *buf; + int len; +{ + int result; + + result = fdbad (p, fd); + if (result) + return result; + result = wrap (p, write (fdmap (p, fd), buf, len)); + return result; +} + +static int +os_write_stdout (p, buf, len) + host_callback *p; + const char *buf; + int len; +{ + return os_write (p, 1, buf, len); +} + +static int +os_rename (p, f1, f2) + host_callback *p; + const char *f1; + const char *f2; +{ + return wrap (p, rename (f1, f2)); +} + + +static int +os_system (p, s) + host_callback *p; + const char *s; +{ + return wrap (p, system (s)); +} + +static long +os_time (p, t) + host_callback *p; + long *t; +{ + return wrap (p, time (t)); +} + + +static int +os_unlink (p, f1) + host_callback *p; + const char *f1; +{ + return wrap (p, unlink (f1)); +} + + +static int +os_shutdown (p) + host_callback *p; +{ + int i; + for (i = 0; i < MAX_CALLBACK_FDS; i++) + { + if (p->fdopen[i] && !p->alwaysopen[i]) { + close (p->fdmap[i]); + p->fdopen[i] = 0; + } + } + return 1; +} + +static int +os_init(p) + host_callback *p; +{ + int i; + os_shutdown (p); + for (i= 0; i < 3; i++) + { + p->fdmap[i] = i; + p->fdopen[i] = 1; + p->alwaysopen[i] = 1; + } + return 1; +} + +/* VARARGS */ +static void +#ifdef ANSI_PROTOTYPES +os_printf_filtered (host_callback *p, const char *format, ...) +#else +os_printf_filtered (p, va_alist) + host_callback *p; + va_dcl +#endif +{ + va_list args; +#ifdef ANSI_PROTOTYPES + va_start (args, format); +#else + char *format; + + va_start (args); + format = va_arg (args, char *); +#endif + + vprintf (format, args); + + va_end (args); +} + +/* VARARGS */ +static void +#ifdef ANSI_PROTOTYPES +os_error (host_callback *p, const char *format, ...) +#else +os_error (p, va_alist) + host_callback *p; + va_dcl +#endif +{ + va_list args; +#ifdef ANSI_PROTOTYPES + va_start (args, format); +#else + char *format; + + va_start (args); + format = va_arg (args, char *); +#endif + + vfprintf (stderr, format, args); + fprintf (stderr, "\n"); + + va_end (args); + exit (EXIT_FAILURE); +} + +host_callback default_callback = +{ + os_close, + os_get_errno, + os_isatty, + os_lseek, + os_open, + os_read, + os_read_stdin, + os_rename, + os_system, + os_time, + os_unlink, + os_write, + os_write_stdout, + + os_shutdown, + os_init, + + os_printf_filtered, + os_error, + + 0, /* last errno */ +}; + +/* FIXME: Need to add hooks so target can tweak as necessary. */ + +/* FIXME: struct stat conversion is missing. */ + +/* FIXME: sort tables if large. + Alternatively, an obvious improvement for errno conversion is + to machine generate a function with a large switch(). */ + +int +host_to_target_errno (host_val) + int host_val; +{ + target_defs_map *m; + + for (m = &errno_map[0]; m->host_val; ++m) + if (m->host_val == host_val) + return m->target_val; + + /* ??? Which error to return in this case is up for grabs. + Note that some missing values may have standard alternatives. + For now return 0 and require caller to deal with it. */ + return 0; +} + +/* Given a set of target bitmasks for the open system call, + return the host equivalent. + Mapping open flag values is best done by looping so there's no need + to machine generate this function. */ + +int +target_to_host_open (target_val) + int target_val; +{ + int host_val = 0; + target_defs_map *m; + + for (m = &open_map[0]; m->host_val != -1; ++m) + { + switch (m->target_val) + { + /* O_RDONLY can be (and usually is) 0 which needs to be treated + specially. */ + case TARGET_O_RDONLY : + case TARGET_O_WRONLY : + case TARGET_O_RDWR : + if ((target_val & (TARGET_O_RDONLY | TARGET_O_WRONLY | TARGET_O_RDWR)) + == m->target_val) + host_val |= m->host_val; + break; + default : + if ((m->target_val & target_val) == m->target_val) + host_val |= m->host_val; + break; + } + } + + return host_val; +} -- 2.7.4