aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--sim/ChangeLog13
-rw-r--r--sim/h8300/compile.c112
2 files changed, 80 insertions, 45 deletions
diff --git a/sim/ChangeLog b/sim/ChangeLog
index 97fecf2..2183398 100644
--- a/sim/ChangeLog
+++ b/sim/ChangeLog
@@ -1,3 +1,16 @@
+2003-10-17 Shrinivas Atre <shrinivasa@KPITCummins.com>
+ * h8300/compile.c : Addition of extern variable h8300_normal_mode
+ (SP) : Handle normal mode
+ (bitfrom) : Use normal mode flag to return suitable value
+ (lvalue) : Use normal mode flag to return command line location
+ (decode) : Decode instruction correctly for normal mode
+ (init_pointers) : Initialise memory correctly for normal mode
+ (sim_resume) : Handle cases for normal mode using h8300_normal_mode flag
+ (sim_store_register) : Handle 2 byte PC for normal mode
+ (sim_fetch_register) : Handle 2 byte PC for normal mode
+ (set_h8300h) : Set normal mode flag as per architechture
+ (sim_load) : Allocate 64K for normal mode instead of bigger memory
+
2003-10-08 Dave Brolley <brolley@redhat.com>
* configure.in: Move frv handling to alphabetically correct placement.
diff --git a/sim/h8300/compile.c b/sim/h8300/compile.c
index a799d2b..f123878 100644
--- a/sim/h8300/compile.c
+++ b/sim/h8300/compile.c
@@ -53,7 +53,7 @@ static void set_simcache_size (SIM_DESC, int);
#define X(op, size) (op * 4 + size)
-#define SP (h8300hmode ? SL : SW)
+#define SP (h8300hmode && !h8300_normal_mode ? SL : SW)
#define h8_opcodes ops
#define DEFINE_TABLE
@@ -510,6 +510,7 @@ enum { POLL_QUIT_INTERVAL = 0x80000 };
int h8300hmode = 0;
int h8300smode = 0;
+int h8300_normal_mode = 0;
int h8300sxmode = 0;
static int memory_size;
@@ -539,7 +540,7 @@ bitfrom (int x)
case L_32:
return SL;
case L_P:
- return h8300hmode ? SL : SW;
+ return (h8300hmode && !h8300_normal_mode)? SL : SW;
}
return 0;
}
@@ -575,9 +576,9 @@ lvalue (SIM_DESC sd, int x, int rn, unsigned int *val)
static int
cmdline_location()
{
- if (h8300smode)
+ if (h8300smode && !h8300_normal_mode)
return 0xffff00L;
- else if (h8300hmode)
+ else if (h8300hmode && !h8300_normal_mode)
return 0x2ff00L;
else
return 0xff00L;
@@ -837,8 +838,10 @@ decode (SIM_DESC sd, int addr, unsigned char *data, decoded_inst *dst)
}
else if ((looking_for & MODE) == VECIND)
{
- /* FIXME: Multiplier should be 2 for "normal" mode. */
- cst[opnum] = ((data[1] & 0x7f) + 0x80) * 4;
+ if(h8300_normal_mode)
+ cst[opnum] = ((data[1] & 0x7f) + 0x80) * 2;
+ else
+ cst[opnum] = ((data[1] & 0x7f) + 0x80) * 4;
cst[opnum] += h8_get_vbr (sd); /* Add vector base reg. */
}
else if ((looking_for & SIZE) == L_32)
@@ -1774,9 +1777,9 @@ init_pointers (SIM_DESC sd)
littleendian.i = 1;
- if (h8300smode)
+ if (h8300smode && !h8300_normal_mode)
memory_size = H8300S_MSIZE;
- else if (h8300hmode)
+ else if (h8300hmode && !h8300_normal_mode)
memory_size = H8300H_MSIZE;
else
memory_size = H8300_MSIZE;
@@ -1950,7 +1953,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
}
oldmask = h8_get_mask (sd);
- if (!h8300hmode)
+ if (!h8300hmode || h8300_normal_mode)
h8_set_mask (sd, 0xffff);
do
{
@@ -2790,7 +2793,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
/* Setting char_ptr_size to the sizeof (char *) on the different
architectures. */
- if (h8300hmode || h8300smode)
+ if ((h8300hmode || h8300smode) && !h8300_normal_mode)
{
char_ptr_size = 4;
}
@@ -2859,7 +2862,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
for (i = 0; i < no_of_args; i++)
{
/* Saving the argv pointer. */
- if (h8300hmode || h8300smode)
+ if ((h8300hmode || h8300smode) && !h8300_normal_mode)
{
SET_MEMORY_L (argv_ptrs_location, argv_ptrs[i]);
}
@@ -2875,7 +2878,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
/* Required by POSIX, Setting 0x0 at the end of the list of argv
pointers. */
- if (h8300hmode || h8300smode)
+ if ((h8300hmode || h8300smode) && !h8300_normal_mode)
{
SET_MEMORY_L (old_sp, 0x0);
}
@@ -2914,7 +2917,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
/* Setting filename_ptr to first argument of open, */
/* and trying to get mode. */
- if (h8300sxmode || h8300hmode || h8300smode)
+ if ((h8300sxmode || h8300hmode || h8300smode) && !h8300_normal_mode)
{
filename_ptr = GET_L_REG (0);
mode = GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM) + 4);
@@ -2965,8 +2968,8 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int read_return = 0; /* Return value from callback to
read. */
- fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
- buf_size = h8300hmode ? GET_L_REG (2) : GET_W_REG (2);
+ fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
+ buf_size = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2);
char_ptr = (char *) malloc (sizeof (char) * buf_size);
@@ -3000,9 +3003,9 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int write_return; /* Return value from callback to write. */
int i = 0; /* Loop counter */
- fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
- char_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1);
- len = h8300hmode ? GET_L_REG (2) : GET_W_REG (2);
+ fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
+ char_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1);
+ len = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2);
/* Allocating space for the characters to be written. */
ptr = (char *) malloc (sizeof (char) * len);
@@ -3032,9 +3035,9 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int origin; /* Origin */
int lseek_return; /* Return value from callback to lseek. */
- fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
- offset = h8300hmode ? GET_L_REG (1) : GET_W_REG (1);
- origin = h8300hmode ? GET_L_REG (2) : GET_W_REG (2);
+ fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
+ offset = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1);
+ origin = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2);
/* Callback lseek and return offset. */
lseek_return =
@@ -3050,7 +3053,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int fd; /* File descriptor */
int close_return; /* Return value from callback to close. */
- fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
+ fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
/* Callback close and return. */
close_return = sim_callback->close (sim_callback, fd);
@@ -3068,10 +3071,10 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int stat_ptr; /* Pointer to stat record. */
char *temp_stat_ptr; /* Temporary stat_rec pointer. */
- fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
+ fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
/* Setting stat_ptr to second argument of stat. */
- stat_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1);
+ stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1);
/* Callback stat and return. */
fstat_return = sim_callback->fstat (sim_callback, fd, &stat_rec);
@@ -3120,7 +3123,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
int i = 0; /* Loop Counter */
/* Setting filename_ptr to first argument of open. */
- filename_ptr = h8300hmode ? GET_L_REG (0) : GET_W_REG (0);
+ filename_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0);
/* Trying to find the length of the filename. */
temp_char = GET_MEMORY_B (h8_get_reg (sd, 0));
@@ -3144,7 +3147,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
/* Setting stat_ptr to second argument of stat. */
/* stat_ptr = h8_get_reg (sd, 1); */
- stat_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1);
+ stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1);
/* Callback stat and return. */
stat_return =
@@ -3552,7 +3555,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
call:
tmp = h8_get_reg (sd, SP_REGNUM);
- if (h8300hmode)
+ if (h8300hmode && !h8300_normal_mode)
{
tmp -= 4;
SET_MEMORY_L (tmp, code->next_pc);
@@ -3584,7 +3587,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
h8_set_exr (sd, GET_MEMORY_L (tmp));
tmp += 4;
}
- if (h8300hmode)
+ if (h8300hmode && !h8300_normal_mode)
{
h8_set_ccr (sd, GET_MEMORY_L (tmp));
tmp += 4;
@@ -3607,7 +3610,7 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
rts:
tmp = h8_get_reg (sd, SP_REGNUM);
- if (h8300hmode)
+ if (h8300hmode && !h8300_normal_mode)
{
pc = GET_MEMORY_L (tmp);
tmp += 4;
@@ -3655,16 +3658,26 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
case O (O_TRAPA, SB): /* trapa */
if (fetch (sd, &code->src, &res))
- goto end; /* res is vector number. */
-
- tmp = h8_get_reg (sd, SP_REGNUM);
- tmp -= 4;
- SET_MEMORY_L (tmp, code->next_pc);
- tmp -= 4;
- SET_MEMORY_L (tmp, h8_get_ccr (sd));
- intMaskBit = 1;
- BUILDSR (sd);
-
+ goto end; /* res is vector number. */
+
+ tmp = h8_get_reg (sd, SP_REGNUM);
+ if(h8300_normal_mode)
+ {
+ tmp -= 2;
+ SET_MEMORY_W (tmp, code->next_pc);
+ tmp -= 2;
+ SET_MEMORY_W (tmp, h8_get_ccr (sd));
+ }
+ else
+ {
+ tmp -= 4;
+ SET_MEMORY_L (tmp, code->next_pc);
+ tmp -= 4;
+ SET_MEMORY_L (tmp, h8_get_ccr (sd));
+ }
+ intMaskBit = 1;
+ BUILDSR (sd);
+
if (h8300smode)
{
tmp -= 4;
@@ -3673,8 +3686,10 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
h8_set_reg (sd, SP_REGNUM, tmp);
- /* FIXME: "normal" mode should use 2-byte ptrs. */
- pc = GET_MEMORY_L (0x20 + res * 4);
+ if(h8300_normal_mode)
+ pc = GET_MEMORY_L (0x10 + res * 2); /* Vector addresses are 0x10,0x12,0x14 and 0x16 */
+ else
+ pc = GET_MEMORY_L (0x20 + res * 4);
goto end;
case O (O_BPT, SN):
@@ -4703,7 +4718,10 @@ sim_store_register (SIM_DESC sd, int rn, unsigned char *value, int length)
switch (rn)
{
case PC_REGNUM:
- h8_set_pc (sd, intval);
+ if(h8300_normal_mode)
+ h8_set_pc (sd, shortval); /* PC for Normal mode is 2 bytes */
+ else
+ h8_set_pc (sd, intval);
break;
default:
(*sim_callback->printf_filtered) (sim_callback,
@@ -4814,7 +4832,8 @@ sim_fetch_register (SIM_DESC sd, int rn, unsigned char *buf, int length)
longreg = 1;
break;
}
- if (h8300hmode || longreg)
+ /* In Normal mode PC is 2 byte, but other registers are 4 byte */
+ if ((h8300hmode || longreg) && !(rn == PC_REGNUM && h8300_normal_mode))
{
buf[0] = v >> 24;
buf[1] = v >> 16;
@@ -4919,6 +4938,9 @@ set_h8300h (unsigned long machine)
if (machine == bfd_mach_h8300h || machine == bfd_mach_h8300hn || h8300smode)
h8300hmode = 1;
+
+ if(machine == bfd_mach_h8300hn || machine == bfd_mach_h8300sn || machine == bfd_mach_h8300sxn)
+ h8300_normal_mode = 1;
}
/* Cover function of sim_state_free to free the cpu buffers as well. */
@@ -5054,9 +5076,9 @@ sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
switching between H8/300 and H8/300H programs without exiting
gdb. */
- if (h8300smode)
+ if (h8300smode && !h8300_normal_mode)
memory_size = H8300S_MSIZE;
- else if (h8300hmode)
+ else if (h8300hmode && !h8300_normal_mode)
memory_size = H8300H_MSIZE;
else
memory_size = H8300_MSIZE;
generated by cgit v1.1 at 2024-11-15 17:59:06 +0000