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authorJeff Law <law@redhat.com>1995-08-31 04:21:32 +0000
committerJeff Law <law@redhat.com>1995-08-31 04:21:32 +0000
commitc1bce9f662c8472a33a83821bbeb7fc86ec252d4 (patch)
treeeffab746489c1c1e77fa564733c913467dbc4c7f
parentc928c81fb72df4dade3b36935a8e05d3ad58440d (diff)
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* 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. First cut at simulating sh3e instructions. Basic stuff should work; instructions using fpul and fpscr are completely untested... Sanitized away for now (sh3e).
-rw-r--r--sim/sh/.Sanitize21
-rw-r--r--sim/sh/ChangeLog9
-rw-r--r--sim/sh/interp.c70
3 files changed, 94 insertions, 6 deletions
diff --git a/sim/sh/.Sanitize b/sim/sh/.Sanitize
index 6a52694..22ad58a 100644
--- a/sim/sh/.Sanitize
+++ b/sim/sh/.Sanitize
@@ -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.
diff --git a/sim/sh/ChangeLog b/sim/sh/ChangeLog
index 8fecfab..82c8a0e 100644
--- a/sim/sh/ChangeLog
+++ b/sim/sh/ChangeLog
@@ -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>
diff --git a/sim/sh/interp.c b/sim/sh/interp.c
index f1fa22c..3c26526 100644
--- a/sim/sh/interp.c
+++ b/sim/sh/interp.c
@@ -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);
+}