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* interp.c (FPSCR, FPUL): Define.

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(struct save_state): Add fields for floating point registers,
	FPSCR and FPUL.
	(sim_resume): Add 'F' for accessing floating point registers
	in the save state structure.
	* gencode.c: Add sh3e opcodes.
	(gensym): Define a buffer for int<->fp conversions.

First cut at simulating sh3e instructions.  Basic stuff should work;
instructions using fpul and fpscr are completely untested...  Sanitized
away for now (sh3e).
This commit is contained in:
Jeff Law 1995-08-31 04:21:32 +00:00
parent c928c81fb7
commit c1bce9f662
3 changed files with 94 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
sim/sh/.Sanitize
View File

@ -38,5 +38,26 @@ Things-to-lose:
Do-last:
sh3e_files="ChangeLog interp.c gencode.c"
if ( echo $* | grep keep\-sh3e > /dev/null ) ; then
if [ -n "${verbose}" ] ; then
echo Keeping sh3e stuff in $sh3e_files.
fi
else
if [ -n "${verbose}" ]; then
echo -n Cleaning sh3e in `pwd`:
fi
for f in $sh3e_files ; do
if [ -n "${verbose}" ] ; then
echo -n " " $f
fi
sed -e '/start\-sanitize\-sh3e/,/end\-sanitize\-sh3e/d' -e '/ xl /d' < $f > new
if [ -n "${safe}" ] ; then
mv $f .Recover
fi
mv new $f
done
fi
# End of file.

9
sim/sh/ChangeLog
View File

@ -1,6 +1,15 @@
Wed Aug 30 22:05:17 1995 Jeff Law (law@snake.cs.utah.edu)
* gencode.c (gensim): abort if an unknown opcode is encountered.
start-sanitize-sh3e
* interp.c (FPSCR, FPUL): Define.
(struct save_state): Add fields for floating point registers,
FPSCR and FPUL.
(sim_resume): Add 'F' for accessing floating point registers
in the save state structure.
* gencode.c: Add sh3e opcodes.
(gensym): Define a buffer for int<->fp conversions.
end-sanitize-sh3e
Tue Aug 22 14:16:46 1995 J.T. Conklin <jtc@rtl.cygnus.com>

70
sim/sh/interp.c
View File

@ -60,6 +60,10 @@
#define M saved_state.asregs.sr.bits.m
#define Q saved_state.asregs.sr.bits.q
#define S saved_state.asregs.sr.bits.s
/* start-sanitize-sh3e */
#define FPSCR saved_state.asregs.fpscr
#define FPUL saved_state.asregs.fpul
/* end-sanitize-sh3e */
#define GET_SR() (saved_state.asregs.sr.bits.t = T, saved_state.asregs.sr.word)
#define SET_SR(x) {saved_state.asregs.sr.word = (x); T =saved_state.asregs.sr.bits.t;}
@ -96,6 +100,8 @@ int valid[16];
#define UNDEF(x)
#endif
static void parse_and_set_memory_size PARAMS ((char *str));
static int IOMEM PARAMS ((int addr, int write, int value));
/* These variables are at file scope so that functions other than
@ -114,6 +120,9 @@ typedef union
{
int regs[16];
/* start-sanitize-sh3e */
float fregs[16];
/* end-sanitize-sh3e */
int pc;
int pr;
@ -122,6 +131,10 @@ typedef union
int mach;
int macl;
/* start-sanitize-sh3e */
float fpscr;
int fpul;
/* end-sanitize-sh3e */
union
{
@ -473,7 +486,9 @@ trap (i, regs, memory, maskl, maskw, little_endian)
regs[0] = trap12 ();
break;
#endif
case 3:
case 3: /* FIXME: for backwards compat, should be removed */
case 34:
{
extern int errno;
int perrno = errno;
@ -490,9 +505,11 @@ trap (i, regs, memory, maskl, maskw, little_endian)
case SYS_execve:
regs[0] = execve (ptr (regs[5]), ptr (regs[6]), ptr (regs[7]));
break;
#ifdef SYS_execv /* May be implemented as execve(arg,arg,0) */
case SYS_execv:
regs[0] = execv (ptr (regs[5]), ptr (regs[6]));
break;
#endif
case SYS_pipe:
{
char *buf;
@ -594,7 +611,6 @@ trap (i, regs, memory, maskl, maskw, little_endian)
regs[1] = errno;
errno = perrno;
}
break;
case 0xc3:
@ -916,6 +932,9 @@ sim_resume (step, siggnal)
register unsigned char *jump_table = sh_jump_table0;
register int *R = &(saved_state.asregs.regs[0]);
/* start-sanitize-sh3e */
register float *F = &(saved_state.asregs.fregs[0]);
/* end-sanitize-sh3e */
register int T;
register int PR;
@ -923,7 +942,7 @@ sim_resume (step, siggnal)
register int maskw = ((saved_state.asregs.msize - 1) & ~1);
register int maskl = ((saved_state.asregs.msize - 1) & ~3);
register unsigned char *memory;
register unsigned int sbit = (1 << 31);
register unsigned int sbit = ((unsigned int) 1 << 31);
prev = signal (SIGINT, control_c);
@ -1155,10 +1174,28 @@ sim_set_profile_size (n)
void
sim_open (name)
char *name;
sim_open (args)
char *args;
{
/* nothing to do */
int n;
if (args != NULL)
{
parse_and_set_memory_size (args);
}
}
static void
parse_and_set_memory_size (str)
char *str;
{
int n;
n = strtol (str, NULL, 10);
if (n > 0 && n <= 24)
sim_memory_size = n;
else
printf_filtered ("Bad memory size %d; must be 1 to 24, inclusive\n", n);
}
void
@ -1192,3 +1229,24 @@ sim_kill ()
/* nothing to do */
}
void
sim_do_command (cmd)
char *cmd;
{
int n;
char *sms_cmd = "set-memory-size";
if (strncmp (cmd, sms_cmd, strlen (sms_cmd)) == 0
&& strchr (" ", cmd[strlen(sms_cmd)]))
parse_and_set_memory_size (cmd + strlen(sms_cmd) + 1);
else if (strcmp (cmd, "help") == 0)
{
printf_filtered ("List of SH simulator commands:\n\n");
printf_filtered ("set-memory-size <n> -- Set the number of address bits to use\n");
printf_filtered ("\n");
}
else
fprintf (stderr, "Error: \"%s\" is not a valid SH simulator command.\n",
cmd);
}