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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
/* This file contains a model of Demon, ARM Ltd's Debug Monitor,
including all the SWI's required to support the C library. The code in
#include <time.h>
#include <errno.h>
+#include <limits.h>
#include <string.h>
#include "targ-vals.h"
#define TARGET_O_BINARY 0
#endif
-#ifdef __STDC__
-#define unlink(s) remove(s)
-#endif
-
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* For SEEK_SET etc. */
#endif
#define FOPEN_MAX 64
#endif
#define UNIQUETEMPS 256
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
/* OS private Information. */
while (temp != 0);
}
+static int
+ReadFileName (ARMul_State * state, char *buf, ARMword src, size_t n)
+{
+ struct OSblock *OSptr = (struct OSblock *) state->OSptr;
+ char *p = buf;
+
+ while (n--)
+ if ((*p++ = ARMul_SafeReadByte (state, src++)) == '\0')
+ return 0;
+ OSptr->ErrorNo = cb_host_to_target_errno (sim_callback, ENAMETOOLONG);
+ state->Reg[0] = -1;
+ return -1;
+}
+
static void
SWIopen (ARMul_State * state, ARMword name, ARMword SWIflags)
{
struct OSblock *OSptr = (struct OSblock *) state->OSptr;
- char dummy[2000];
+ char buf[PATH_MAX];
int flags;
- int i;
- for (i = 0; (dummy[i] = ARMul_SafeReadByte (state, name + i)); i++)
- ;
+ if (ReadFileName (state, buf, name, sizeof buf) == -1)
+ return;
/* Now we need to decode the Demon open mode. */
flags = translate_open_mode[SWIflags];
/* Filename ":tt" is special: it denotes stdin/out. */
- if (strcmp (dummy, ":tt") == 0)
+ if (strcmp (buf, ":tt") == 0)
{
if (flags == TARGET_O_RDONLY) /* opening tty "r" */
state->Reg[0] = 0; /* stdin */
}
else
{
- state->Reg[0] = sim_callback->open (sim_callback, dummy, flags);
+ state->Reg[0] = sim_callback->open (sim_callback, buf, flags);
OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
}
}
struct OSblock *OSptr = (struct OSblock *) state->OSptr;
ARMword addr;
- if (fh == 0 || fh > FOPEN_MAX)
+ if (fh > FOPEN_MAX)
{
OSptr->ErrorNo = EBADF;
state->Reg[0] = -1L;
OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
}
+static void
+SWIremove (ARMul_State * state, ARMword path)
+{
+ char buf[PATH_MAX];
+
+ if (ReadFileName (state, buf, path, sizeof buf) != -1)
+ {
+ struct OSblock *OSptr = (struct OSblock *) state->OSptr;
+ state->Reg[0] = sim_callback->unlink (sim_callback, buf);
+ OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
+ }
+}
+
+static void
+SWIrename (ARMul_State * state, ARMword old, ARMword new)
+{
+ char oldbuf[PATH_MAX], newbuf[PATH_MAX];
+
+ if (ReadFileName (state, oldbuf, old, sizeof oldbuf) != -1
+ && ReadFileName (state, newbuf, new, sizeof newbuf) != -1)
+ {
+ struct OSblock *OSptr = (struct OSblock *) state->OSptr;
+ state->Reg[0] = sim_callback->rename (sim_callback, oldbuf, newbuf);
+ OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
+ }
+}
+
/* The emulator calls this routine when a SWI instruction is encuntered.
The parameter passed is the SWI number (lower 24 bits of the instruction). */
state->Emulate = FALSE;
break;
+ case SWI_Remove:
+ if (swi_mask & SWI_MASK_DEMON)
+ SWIremove (state, state->Reg[0]);
+ else
+ unhandled = TRUE;
+ break;
+
+ case SWI_Rename:
+ if (swi_mask & SWI_MASK_DEMON)
+ SWIrename (state, state->Reg[0], state->Reg[1]);
+ else
+ unhandled = TRUE;
+ break;
+
+ case SWI_IsTTY:
+ if (swi_mask & SWI_MASK_DEMON)
+ {
+ state->Reg[0] = sim_callback->isatty (sim_callback, state->Reg[0]);
+ OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
+ }
+ else
+ unhandled = TRUE;
+ break;
+
/* Handle Angel SWIs as well as Demon ones. */
case AngelSWI_ARM:
case AngelSWI_Thumb:
/* Unimplemented reason codes. */
case AngelSWI_Reason_ReadC:
- case AngelSWI_Reason_IsTTY:
case AngelSWI_Reason_TmpNam:
- case AngelSWI_Reason_Remove:
- case AngelSWI_Reason_Rename:
case AngelSWI_Reason_System:
case AngelSWI_Reason_EnterSVC:
default:
ARMul_ReadWord (state, addr + 4),
ARMul_ReadWord (state, addr + 8));
break;
+
+ case AngelSWI_Reason_IsTTY:
+ state->Reg[0] = sim_callback->isatty (sim_callback,
+ ARMul_ReadWord (state, addr));
+ OSptr->ErrorNo = sim_callback->get_errno (sim_callback);
+ break;
+
+ case AngelSWI_Reason_Remove:
+ SWIremove (state,
+ ARMul_ReadWord (state, addr));
+
+ case AngelSWI_Reason_Rename:
+ SWIrename (state,
+ ARMul_ReadWord (state, addr),
+ ARMul_ReadWord (state, addr + 4));
}
}
else
case 18: /* Time. */
sim_callback->printf_filtered
(sim_callback,
- "sim: unhandled RedBoot syscall '%d' encountered - ignoring\n",
+ "sim: unhandled RedBoot syscall `%d' encountered - "
+ "returning ENOSYS\n",
state->Reg[0]);
- return FALSE;
+ state->Reg[0] = -1;
+ OSptr->ErrorNo = cb_host_to_target_errno
+ (sim_callback, ENOSYS);
+ break;
+ case 1001: /* Meminfo. */
+ {
+ ARMword totmem = state->Reg[1],
+ topmem = state->Reg[2];
+ ARMword stack = state->MemSize > 0
+ ? state->MemSize : ADDRUSERSTACK;
+ if (totmem != 0)
+ ARMul_WriteWord (state, totmem, stack);
+ if (topmem != 0)
+ ARMul_WriteWord (state, topmem, stack);
+ state->Reg[0] = 0;
+ break;
+ }
default:
sim_callback->printf_filtered
projects / deliverable / binutils-gdb.git / blobdiff