mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
541 lines
14 KiB
C
541 lines
14 KiB
C
/* kid.c -- ARMulator RDP/RDI interface: ARM6 Instruction Emulator.
|
|
Copyright (C) 1994 Advanced RISC Machines Ltd.
|
|
|
|
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. */
|
|
|
|
/*****************************************************************/
|
|
/* The child process continues here... */
|
|
/* It waits on a pipe from the parent and translates the RDP */
|
|
/* messages into RDI calls to the ARMulator passing RDP replies */
|
|
/* back up a pipe to the parent. */
|
|
/*****************************************************************/
|
|
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
|
|
#include "armdefs.h"
|
|
#include "dbg_conf.h"
|
|
#include "dbg_hif.h"
|
|
#include "dbg_rdi.h"
|
|
#include "gdbhost.h"
|
|
#include "communicate.h"
|
|
|
|
/* The pipes between the two processes */
|
|
extern int mumkid[2];
|
|
extern int kidmum[2];
|
|
|
|
/* The maximum number of file descriptors */
|
|
extern int nfds;
|
|
|
|
/* The machine name */
|
|
#define MAXHOSTNAMELENGTH 64
|
|
extern char localhost[MAXHOSTNAMELENGTH + 1];
|
|
|
|
/* The socket number */
|
|
extern unsigned int socketnumber;
|
|
|
|
/* RDI interface */
|
|
extern const struct RDIProcVec armul_rdi;
|
|
|
|
static int MYrdp_level = 0;
|
|
|
|
static int rdi_state = 0;
|
|
|
|
/**************************************************************/
|
|
/* Signal handler that terminates excecution in the ARMulator */
|
|
/**************************************************************/
|
|
void
|
|
kid_handlesignal (int sig)
|
|
{
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "Terminate ARMulator excecution\n");
|
|
#endif
|
|
if (sig != SIGUSR1)
|
|
{
|
|
fprintf (stderr, "Unsupported signal.\n");
|
|
return;
|
|
}
|
|
armul_rdi.info (RDISignal_Stop, (unsigned long *) 0, (unsigned long *) 0);
|
|
}
|
|
|
|
/********************************************************************/
|
|
/* Waits on a pipe from the socket demon for RDP and */
|
|
/* acts as an RDP to RDI interpreter on the front of the ARMulator. */
|
|
/********************************************************************/
|
|
void
|
|
kid ()
|
|
{
|
|
char *p, *q;
|
|
int i, j, k;
|
|
long outofthebag;
|
|
unsigned char c, d, message;
|
|
ARMword x, y, z;
|
|
struct sigaction action;
|
|
PointHandle point;
|
|
Dbg_ConfigBlock config;
|
|
Dbg_HostosInterface hostif;
|
|
struct Dbg_MCState *MCState;
|
|
char command_line[256];
|
|
struct fd_set readfds;
|
|
|
|
/* Setup a signal handler for SIGUSR1 */
|
|
action.sa_handler = kid_handlesignal;
|
|
action.sa_mask = 0;
|
|
action.sa_flags = 0;
|
|
|
|
sigaction (SIGUSR1, &action, (struct sigaction *) 0);
|
|
|
|
while (1)
|
|
{
|
|
/* Wait for ever */
|
|
FD_ZERO (&readfds);
|
|
FD_SET (mumkid[0], &readfds);
|
|
|
|
i = select (nfds, &readfds,
|
|
(fd_set *) 0, (fd_set *) 0, (struct timeval *) 0);
|
|
|
|
if (i < 0)
|
|
{
|
|
perror ("select");
|
|
}
|
|
|
|
if (read (mumkid[0], &message, 1) < 1)
|
|
{
|
|
perror ("read");
|
|
}
|
|
|
|
switch (message)
|
|
{
|
|
case RDP_Start:
|
|
/* Open and/or Initialise */
|
|
BAG_newbag ();
|
|
|
|
MYread_char (mumkid[0], &c); /* type */
|
|
MYread_word (mumkid[0], &x); /* memorysize */
|
|
if (c & 0x2)
|
|
MYread_char (mumkid[0], &d); /* speed */
|
|
config.processor = 0;
|
|
config.memorysize = x;
|
|
config.bytesex = (c & 0x4) ? RDISex_Big : RDISex_Little;
|
|
if (c & 0x8)
|
|
config.bytesex = RDISex_DontCare;
|
|
|
|
hostif.dbgprint = myprint;
|
|
hostif.dbgpause = mypause;
|
|
hostif.dbgarg = stdout;
|
|
hostif.writec = mywritec;
|
|
hostif.readc = myreadc;
|
|
hostif.write = mywrite;
|
|
hostif.gets = mygets;
|
|
hostif.reset = mypause; /* do nothing */
|
|
hostif.resetarg = "Do I love resetting or what!\n";
|
|
|
|
if (rdi_state)
|
|
{
|
|
/* we have restarted, so kill off the existing run. */
|
|
/* armul_rdi.close(); */
|
|
}
|
|
i = armul_rdi.open (c & 0x3, &config, &hostif, MCState);
|
|
rdi_state = 1;
|
|
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
|
|
x = ~0x4;
|
|
armul_rdi.info (RDIVector_Catch, &x, 0);
|
|
|
|
break;
|
|
|
|
case RDP_End:
|
|
/* Close and Finalise */
|
|
i = armul_rdi.close ();
|
|
rdi_state = 0;
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_Read:
|
|
/* Read Memory Address */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_word (mumkid[0], &y); /* nbytes */
|
|
p = (char *) malloc (y);
|
|
i = armul_rdi.read (x, p, (unsigned *) &y);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
for (k = 0; k < y; k++)
|
|
MYwrite_char (kidmum[1], p[k]);
|
|
free (p);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
if (i)
|
|
MYwrite_word (kidmum[1], y); /* number of bytes sent without error */
|
|
break;
|
|
|
|
case RDP_Write:
|
|
/* Write Memory Address */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_word (mumkid[0], &y); /* nbytes */
|
|
p = (char *) malloc (y);
|
|
for (k = 0; k < y; k++)
|
|
MYread_char (mumkid[0], &p[k]);
|
|
i = armul_rdi.write (p, x, (unsigned *) &y);
|
|
free (p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
if (i)
|
|
MYwrite_word (kidmum[1], y); /* number of bytes sent without error */
|
|
break;
|
|
|
|
case RDP_CPUread:
|
|
/* Read CPU State */
|
|
MYread_char (mumkid[0], &c); /* mode */
|
|
MYread_word (mumkid[0], &x); /* mask */
|
|
p = (char *) malloc (4 * RDINumCPURegs);
|
|
i = armul_rdi.CPUread (c, x, (ARMword *) p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
for (k = 1, j = 0; k != 0x80000000; k *= 2)
|
|
if (k & x)
|
|
MYwrite_word (kidmum[1], ((ARMword *) p)[j++]);
|
|
free (p);
|
|
if (i)
|
|
MYwrite_char (kidmum[1], (unsigned char) j);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_CPUwrite:
|
|
/* Write CPU State */
|
|
MYread_char (mumkid[0], &c); /* mode */
|
|
MYread_word (mumkid[0], &x); /* mask */
|
|
|
|
p = (char *) malloc (4 * RDINumCPURegs);
|
|
for (k = 1, j = 0; k != 0x80000000; k *= 2)
|
|
if (k & x)
|
|
MYread_word (mumkid[0], &(((ARMword *) p)[j++]));
|
|
i = armul_rdi.CPUwrite (c, x, (ARMword *) p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
free (p);
|
|
break;
|
|
|
|
case RDP_CPread:
|
|
/* Read Co-Processor State */
|
|
MYread_char (mumkid[0], &c); /* CPnum */
|
|
MYread_word (mumkid[0], &x); /* mask */
|
|
p = q = (char *) malloc (16 * RDINumCPRegs);
|
|
i = armul_rdi.CPread (c, x, (ARMword *) p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
for (k = 1, j = 0; k != 0x80000000; k *= 2, j++)
|
|
if (k & x)
|
|
{
|
|
if ((c == 1 || c == 2) && k <= 128)
|
|
{
|
|
MYwrite_FPword (kidmum[1], q);
|
|
q += 16;
|
|
}
|
|
else
|
|
{
|
|
MYwrite_word (kidmum[1], *q);
|
|
q += 4;
|
|
}
|
|
}
|
|
free (p);
|
|
if (i)
|
|
MYwrite_char (kidmum[1], (unsigned char) j);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_CPwrite:
|
|
/* Write Co-Processor State */
|
|
MYread_char (mumkid[0], &c); /* CPnum */
|
|
MYread_word (mumkid[0], &x); /* mask */
|
|
p = q = (char *) malloc (16 * RDINumCPURegs);
|
|
for (k = 1, j = 0; k != 0x80000000; k *= 2, j++)
|
|
if (k & x)
|
|
{
|
|
if ((c == 1 || c == 2) && k <= 128)
|
|
{
|
|
MYread_FPword (kidmum[1], q);
|
|
q += 16;
|
|
}
|
|
else
|
|
{
|
|
MYread_word (mumkid[0], (ARMword *) q);
|
|
q += 4;
|
|
}
|
|
}
|
|
i = armul_rdi.CPwrite (c, x, (ARMword *) p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
free (p);
|
|
break;
|
|
|
|
case RDP_SetBreak:
|
|
/* Set Breakpoint */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_char (mumkid[0], &c); /* type */
|
|
if ((c & 0xf) >= 5)
|
|
MYread_word (mumkid[0], &y); /* bound */
|
|
i = armul_rdi.setbreak (x, c, y, &point);
|
|
if (!MYrdp_level)
|
|
BAG_putpair ((long) x, (long) point);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
if (MYrdp_level)
|
|
MYwrite_word (kidmum[1], point);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_ClearBreak:
|
|
/* Clear Breakpoint */
|
|
MYread_word (mumkid[0], &point); /* PointHandle */
|
|
if (!MYrdp_level)
|
|
{
|
|
BAG_getsecond ((long) point, &outofthebag); /* swap pointhandle for address */
|
|
BAG_killpair_byfirst (outofthebag);
|
|
point = outofthebag;
|
|
}
|
|
i = armul_rdi.clearbreak (point);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_SetWatch:
|
|
/* Set Watchpoint */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_char (mumkid[0], &c); /* type */
|
|
MYread_char (mumkid[0], &d); /* datatype */
|
|
if ((c & 0xf) >= 5)
|
|
MYread_word (mumkid[0], &y); /* bound */
|
|
i = armul_rdi.setwatch (x, c, d, y, &point);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_word (kidmum[1], point);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_ClearWatch:
|
|
/* Clear Watchpoint */
|
|
MYread_word (mumkid[0], &point); /* PointHandle */
|
|
i = armul_rdi.clearwatch (point);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_Execute:
|
|
/* Excecute */
|
|
|
|
MYread_char (mumkid[0], &c); /* return */
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "Starting execution\n");
|
|
#endif
|
|
i = armul_rdi.execute (&point);
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "Completed execution\n");
|
|
#endif
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
if (c & 0x80)
|
|
MYwrite_word (kidmum[1], point);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_Step:
|
|
/* Step */
|
|
MYread_char (mumkid[0], &c); /* return */
|
|
MYread_word (mumkid[0], &x); /* ninstr */
|
|
point = 0x87654321;
|
|
i = armul_rdi.step (x, &point);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
if (c & 0x80)
|
|
MYwrite_word (kidmum[1], point);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDP_Info:
|
|
/* Info */
|
|
MYread_word (mumkid[0], &x);
|
|
switch (x)
|
|
{
|
|
case RDIInfo_Target:
|
|
i = armul_rdi.info (RDIInfo_Target, &y, &z);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_word (kidmum[1], y); /* Loads of info... */
|
|
MYwrite_word (kidmum[1], z); /* Model */
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDISet_RDILevel:
|
|
MYread_word (mumkid[0], &x); /* arg1, debug level */
|
|
i = armul_rdi.info (RDISet_RDILevel, &x, 0);
|
|
if (i == RDIError_NoError)
|
|
MYrdp_level = x;
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDISet_Cmdline:
|
|
for (p = command_line; MYread_char (mumkid[0], p), *p; p++)
|
|
; /* String */
|
|
i = armul_rdi.info (RDISet_Cmdline,
|
|
(unsigned long *) command_line, 0);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDIInfo_Step:
|
|
i = armul_rdi.info (RDIInfo_Step, &x, 0);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_word (kidmum[1], x);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
case RDIVector_Catch:
|
|
MYread_word (mumkid[0], &x);
|
|
i = armul_rdi.info (RDIVector_Catch, &x, 0);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], i);
|
|
break;
|
|
|
|
case RDIInfo_Points:
|
|
i = armul_rdi.info (RDIInfo_Points, &x, 0);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_word (kidmum[1], x);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
break;
|
|
|
|
default:
|
|
fprintf (stderr, "Unsupported info code %d\n", x);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case RDP_OSOpReply:
|
|
/* OS Operation Reply */
|
|
MYwrite_char (kidmum[1], RDP_Fatal);
|
|
break;
|
|
|
|
case RDP_Reset:
|
|
/* Reset */
|
|
for (i = 0; i < 50; i++)
|
|
MYwrite_char (kidmum[1], RDP_Reset);
|
|
p = (char *) malloc (MAXHOSTNAMELENGTH + 5 + 20);
|
|
sprintf (p, "Running on %s:%d\n", localhost, socketnumber);
|
|
MYwrite_string (kidmum[1], p);
|
|
free (p);
|
|
|
|
break;
|
|
default:
|
|
fprintf (stderr, "Oh dear: Something is seriously wrong :-(\n");
|
|
/* Hmm.. bad RDP operation */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Handles memory read operations until an OS Operation Reply Message is */
|
|
/* encounterd. It then returns the byte info value (0, 1, or 2) and fills */
|
|
/* in 'putinr0' with the data if appropriate. */
|
|
int
|
|
wait_for_osreply (ARMword * reply)
|
|
{
|
|
char *p, *q;
|
|
int i, j, k;
|
|
unsigned char c, d, message;
|
|
ARMword x, y, z;
|
|
struct sigaction action;
|
|
PointHandle point;
|
|
Dbg_ConfigBlock config;
|
|
Dbg_HostosInterface hostif;
|
|
struct Dbg_MCState *MCState;
|
|
char command_line[256];
|
|
struct fd_set readfds;
|
|
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "wait_for_osreply ().\n");
|
|
#endif
|
|
|
|
/* Setup a signal handler for SIGUSR1 */
|
|
action.sa_handler = kid_handlesignal;
|
|
action.sa_mask = 0;
|
|
action.sa_flags = 0;
|
|
|
|
sigaction (SIGUSR1, &action, (struct sigaction *) 0);
|
|
|
|
while (1)
|
|
{
|
|
/* Wait for ever */
|
|
FD_ZERO (&readfds);
|
|
FD_SET (mumkid[0], &readfds);
|
|
|
|
i = select (nfds, &readfds,
|
|
(fd_set *) 0, (fd_set *) 0, (struct timeval *) 0);
|
|
|
|
if (i < 0)
|
|
{
|
|
perror ("select");
|
|
}
|
|
|
|
if (read (mumkid[0], &message, 1) < 1)
|
|
{
|
|
perror ("read");
|
|
}
|
|
|
|
switch (message)
|
|
{
|
|
case RDP_Read:
|
|
/* Read Memory Address */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_word (mumkid[0], &y); /* nbytes */
|
|
p = (char *) malloc (y);
|
|
i = armul_rdi.read (x, p, (unsigned *) &y);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
for (k = 0; k < y; k++)
|
|
MYwrite_char (kidmum[1], p[k]);
|
|
free (p);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
if (i)
|
|
MYwrite_word (kidmum[1], y); /* number of bytes sent without error */
|
|
break;
|
|
|
|
case RDP_Write:
|
|
/* Write Memory Address */
|
|
MYread_word (mumkid[0], &x); /* address */
|
|
MYread_word (mumkid[0], &y); /* nbytes */
|
|
p = (char *) malloc (y);
|
|
for (k = 0; k < y; k++)
|
|
MYread_char (mumkid[0], &p[k]);
|
|
i = armul_rdi.write (p, x, (unsigned *) &y);
|
|
free (p);
|
|
MYwrite_char (kidmum[1], RDP_Return);
|
|
MYwrite_char (kidmum[1], (unsigned char) i);
|
|
if (i)
|
|
MYwrite_word (kidmum[1], y); /* number of bytes sent without error */
|
|
break;
|
|
|
|
case RDP_OSOpReply:
|
|
/* OS Operation Reply */
|
|
MYread_char (mumkid[0], &c);
|
|
if (c == 1)
|
|
MYread_char (mumkid[0], (char *) reply);
|
|
if (c == 2)
|
|
MYread_word (mumkid[0], reply);
|
|
return c;
|
|
break;
|
|
|
|
default:
|
|
fprintf (stderr,
|
|
"HELP! Unaccounted-for message during OS request. \n");
|
|
MYwrite_char (kidmum[1], RDP_Fatal);
|
|
}
|
|
}
|
|
}
|