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[Qemu-devel] [4483] Support signal reception in user-mode.
From: |
Edgar E. Iglesias |
Subject: |
[Qemu-devel] [4483] Support signal reception in user-mode. |
Date: |
Sat, 17 May 2008 22:20:54 +0000 |
Revision: 4483
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4483
Author: edgar_igl
Date: 2008-05-17 22:20:53 +0000 (Sat, 17 May 2008)
Log Message:
-----------
Support signal reception in user-mode. Handle when the peer terminates or
aborts the connection.
Modified Paths:
--------------
trunk/gdbstub.c
Modified: trunk/gdbstub.c
===================================================================
--- trunk/gdbstub.c 2008-05-17 19:55:28 UTC (rev 4482)
+++ trunk/gdbstub.c 2008-05-17 22:20:53 UTC (rev 4483)
@@ -65,6 +65,7 @@
int line_csum;
uint8_t last_packet[4100];
int last_packet_len;
+ int signal;
#ifdef CONFIG_USER_ONLY
int fd;
int running_state;
@@ -93,9 +94,13 @@
for(;;) {
ret = recv(s->fd, &ch, 1, 0);
if (ret < 0) {
+ if (errno == ECONNRESET)
+ s->fd = -1;
if (errno != EINTR && errno != EAGAIN)
return -1;
} else if (ret == 0) {
+ close(s->fd);
+ s->fd = -1;
return -1;
} else {
break;
@@ -991,6 +996,10 @@
}
gdb_continue(s);
return RS_IDLE;
+ case 'C':
+ s->signal = strtoul(p, (char **)&p, 16);
+ gdb_continue(s);
+ return RS_IDLE;
case 'k':
/* Kill the target */
fprintf(stderr, "\nQEMU: Terminated via GDBstub\n");
@@ -1364,11 +1373,10 @@
char buf[256];
int n;
- if (gdbserver_fd < 0)
+ s = &gdbserver_state;
+ if (gdbserver_fd < 0 || s->fd < 0)
return sig;
- s = &gdbserver_state;
-
/* disable single step if it was enabled */
cpu_single_step(env, 0);
tb_flush(env);
@@ -1378,6 +1386,10 @@
snprintf(buf, sizeof(buf), "S%02x", sig);
put_packet(s, buf);
}
+ /* put_packet() might have detected that the peer terminated the
+ connection. */
+ if (s->fd < 0)
+ return sig;
sig = 0;
s->state = RS_IDLE;
@@ -1398,6 +1410,8 @@
return sig;
}
}
+ sig = s->signal;
+ s->signal = 0;
return sig;
}
@@ -1407,11 +1421,10 @@
GDBState *s;
char buf[4];
- if (gdbserver_fd < 0)
+ s = &gdbserver_state;
+ if (gdbserver_fd < 0 || s->fd < 0)
return;
- s = &gdbserver_state;
-
snprintf(buf, sizeof(buf), "W%02x", code);
put_packet(s, buf);
}
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