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2005-11-16 Shaun Jackman <sjackman@gmail.com>

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* sim/arm/armos.c: Include limits.h
	(unlink): Remove this macro. It is unused in this file and
	conflicts with sim_callback->unlink.
	(PATH_MAX): Define as 1024 if not already defined.
	(ReadFileName): New function.
	(SWIopen): Fix a potential buffer overflow.
	(SWIremove): New function.
	(SWIrename): Ditto.
	(ARMul_OSHandleSWI): Handle the RDP calls SWI_IsTTY,
	SWI_Remove, and SWI_Rename, as well as the RDI calls
	AngelSWI_Reason_IsTTY, AngelSWI_Reason_Remove, and
	AngelSWI_Reason_Rename.
This commit is contained in:
Daniel Jacobowitz 2005-11-17 04:23:03 +00:00
parent 17d43da18d
commit 2be701a30f
2 changed files with 104 additions and 13 deletions
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15
sim/arm/ChangeLog
View file

@ -1,3 +1,18 @@
2005-11-16 Shaun Jackman <sjackman@gmail.com>
* sim/arm/armos.c: Include limits.h
(unlink): Remove this macro. It is unused in this file and
conflicts with sim_callback->unlink.
(PATH_MAX): Define as 1024 if not already defined.
(ReadFileName): New function.
(SWIopen): Fix a potential buffer overflow.
(SWIremove): New function.
(SWIrename): Ditto.
(ARMul_OSHandleSWI): Handle the RDP calls SWI_IsTTY,
SWI_Remove, and SWI_Rename, as well as the RDI calls
AngelSWI_Reason_IsTTY, AngelSWI_Reason_Remove, and
AngelSWI_Reason_Rename.
2005-09-19 Paul Brook <paul@codesourcery.com>
* armdefs.h: Define ARMsword and ARMsdword. Use stdint.h when

102
sim/arm/armos.c
View file

@ -27,6 +27,7 @@
#include <time.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include "targ-vals.h"
@ -34,10 +35,6 @@
#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
@ -89,6 +86,9 @@ extern ARMword ARMul_Debug (ARMul_State *, ARMword, ARMword);
#define FOPEN_MAX 64
#endif
#define UNIQUETEMPS 256
#ifndef PATH_MAX
#define PATH_MAX 1024
#endif
/* OS private Information. */
@ -299,22 +299,35 @@ WriteCommandLineTo (ARMul_State * state, ARMword addr)
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 */
@ -323,7 +336,7 @@ SWIopen (ARMul_State * state, ARMword name, ARMword SWIflags)
}
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);
}
}
@ -403,6 +416,33 @@ SWIflen (ARMul_State * state, ARMword fh)
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). */
@ -544,6 +584,30 @@ ARMul_OSHandleSWI (ARMul_State * state, ARMword number)
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:
@ -566,10 +630,7 @@ ARMul_OSHandleSWI (ARMul_State * state, ARMword number)
/* 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:
@ -684,6 +745,21 @@ ARMul_OSHandleSWI (ARMul_State * state, ARMword number)
ARMul_ReadWord (state, addr + 4),
ARMul_ReadWord (state, addr + 8));
break;
case AngelSWI_Reason_IsTTY:
state->Reg[0] = sim_callback->close (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