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2004-06-25 J"orn Rennecke <joern.rennecke@superh.com>

Browse Source 
include/gdb:
	* callback.h (host_callback_struct): Replace members fdopen and
        alwaysopen with fd_buddy.
sim/common:
	* callback.c: Changed all users.
This commit is contained in:
Joern Rennecke 2004-06-25 16:48:03 +00:00
parent f9f2cf5dd6
commit 594ee3a79f
4 changed files with 60 additions and 16 deletions
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6
include/gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2004-06-25 J"orn Rennecke <joern.rennecke@superh.com>
* callback.h (host_callback_struct): Replace members fdopen and
alwaysopen with fd_buddy.
[sim/common: * callback.c: Changed all users. ]
2003-10-31 Kevin Buettner <kevin@redhat.com>
* sim-frv.h: New file.

11
include/gdb/callback.h
View File

@ -123,8 +123,15 @@ struct host_callback_struct
int last_errno; /* host format */
int fdmap[MAX_CALLBACK_FDS];
char fdopen[MAX_CALLBACK_FDS];
char alwaysopen[MAX_CALLBACK_FDS];
/* fd_buddy is used to contruct circular lists of target fds that point to
the same host fd. A uniquely mapped fd points to itself; for a closed
one, fd_buddy has the value -1. The host file descriptors for stdin /
stdout / stderr are never closed by the simulators, so they are put
in a special fd_buddy circular list which also has MAX_CALLBACK_FDS
as a member. */
/* ??? We don't have a callback entry for dup, although it is trival to
implement now. */
short fd_buddy[MAX_CALLBACK_FDS+1];
/* System call numbers. */
CB_TARGET_DEFS_MAP *syscall_map;

6
sim/common/ChangeLog
View File

@ -1,3 +1,9 @@
2004-06-25 J"orn Rennecke <joern.rennecke@superh.com>
[ include/gdb: * callback.h (host_callback_struct): Replace
members fdopen and alwaysopen with fd_buddy. ]
* callback.c: Changed all users.
2004-06-15 Alan Modra <amodra@bigpond.net.au>
* sim-load.c (sim_load_file): Use bfd_get_section_size

53
sim/common/callback.c
View File

@ -110,7 +110,7 @@ fdbad (p, fd)
host_callback *p;
int fd;
{
if (fd < 0 || fd > MAX_CALLBACK_FDS || !p->fdopen[fd])
if (fd < 0 || fd > MAX_CALLBACK_FDS || p->fd_buddy[fd] < 0)
{
p->last_errno = EINVAL;
return -1;
@ -132,13 +132,20 @@ os_close (p, fd)
int fd;
{
int result;
int i, next;
result = fdbad (p, fd);
if (result)
return result;
result = wrap (p, close (fdmap (p, fd)));
if (result == 0 && !p->alwaysopen[fd])
p->fdopen[fd] = 0;
/* If this file descripter has one or more buddies (originals /
duplicates from a dup), just remove it from the circular list. */
for (i = fd; (next = p->fd_buddy[i]) != fd; )
i = next;
if (fd != i)
p->fd_buddy[i] = p->fd_buddy[fd];
else
result = wrap (p, close (fdmap (p, fd)));
p->fd_buddy[fd] = -1;
return result;
}
@ -234,7 +241,7 @@ os_open (p, name, flags)
int i;
for (i = 0; i < MAX_CALLBACK_FDS; i++)
{
if (!p->fdopen[i])
if (p->fd_buddy[i] < 0)
{
int f = open (name, cb_target_to_host_open (p, flags), 0644);
if (f < 0)
@ -242,7 +249,7 @@ os_open (p, name, flags)
p->last_errno = errno;
return f;
}
p->fdopen[i] = 1;
p->fd_buddy[i] = i;
p->fdmap[i] = f;
return i;
}
@ -428,13 +435,31 @@ static int
os_shutdown (p)
host_callback *p;
{
int i;
int i, next, j;
for (i = 0; i < MAX_CALLBACK_FDS; i++)
{
if (p->fdopen[i] && !p->alwaysopen[i]) {
int do_close = 1;
next = p->fd_buddy[i];
if (next < 0)
continue;
do
{
j = next;
if (j == MAX_CALLBACK_FDS)
do_close = 0;
next = p->fd_buddy[j];
p->fd_buddy[j] = -1;
/* At the initial call of os_init, we got -1, 0, 0, 0, ... */
if (next < 0)
{
do_close = 0;
break;
}
}
while (j != i);
if (do_close)
close (p->fdmap[i]);
p->fdopen[i] = 0;
}
}
return 1;
}
@ -449,9 +474,10 @@ os_init (p)
for (i = 0; i < 3; i++)
{
p->fdmap[i] = i;
p->fdopen[i] = 1;
p->alwaysopen[i] = 1;
p->fd_buddy[i] = i - 1;
}
p->fd_buddy[0] = MAX_CALLBACK_FDS;
p->fd_buddy[MAX_CALLBACK_FDS] = 2;
p->syscall_map = cb_init_syscall_map;
p->errno_map = cb_init_errno_map;
@ -580,8 +606,7 @@ host_callback default_callback =
0, /* last errno */
{ 0, }, /* fdmap */
{ 0, }, /* fdopen */
{ 0, }, /* alwaysopen */
{ -1, }, /* fd_buddy */
0, /* syscall_map */
0, /* errno_map */