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This commit is contained in:
Andrew Cagney
1997-04-24 12:06:27 +00:00
parent e5b9ee95f6
commit abe293a0c6
9 changed files with 359 additions and 203 deletions
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45
sim/tic80/sim-calls.c
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@ -142,8 +142,8 @@ sim_kill (SIM_DESC sd)
int
sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
{
sim_io_error (sd, "sim_read");
return 0;
return sim_core_read_buffer (sd, sim_core_write_map,
buf, mem, length);
}
@ -155,17 +155,50 @@ sim_write (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
}
/* FIXME - these magic numbers need to be moved elsewhere */
#define SP_REGNUM 1 /* Contains address of top of stack */
#define FP_REGNUM 31 /* Contains address of executing stack frame */
#define PC_REGNUM 32 /* Contains program counter (FIXME?) */
#define NPC_REGNUM 33 /* Contains the next program counter (FIXME?) */
#define A0_REGNUM 34 /* Accumulator register 0 */
#define A3_REGNUM 37 /* Accumulator register 1 */
#define R0_REGNUM 0 /* General Purpose Register 0 - for sim */
#define Rn_REGNUM 31 /* Last General Purpose Register - for sim */
#define An_REGNUM A3_REGNUM /* Last Accumulator register - for sim */
void
sim_fetch_register (SIM_DESC sd, int regno, unsigned char *buf)
sim_fetch_register (SIM_DESC sd, int regnr, unsigned char *buf)
{
sim_io_error (sd, "sim_fetch_register");
if (regnr >= R0_REGNUM && regnr <= Rn_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->reg[regnr - A0_REGNUM]);
else if (regnr == PC_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->cia.ip);
else if (regnr == NPC_REGNUM)
*(unsigned32*)buf = H2T_4 (STATE_CPU (sd, 0)->cia.dp);
else if (regnr >= A0_REGNUM && regnr <= An_REGNUM)
*(unsigned64*)buf = H2T_8 (STATE_CPU (sd, 0)->acc[regnr - A0_REGNUM]);
else
sim_io_error (sd, "sim_fetch_register - unknown register nr %d", regnr);
return;
}
void
sim_store_register (SIM_DESC sd, int regno, unsigned char *buf)
sim_store_register (SIM_DESC sd, int regnr, unsigned char *buf)
{
sim_io_error (sd, "sim_info");
if (regnr >= R0_REGNUM && regnr <= Rn_REGNUM)
STATE_CPU (sd, 0)->reg[regnr - A0_REGNUM] = T2H_4 (*(unsigned32*)buf);
else if (regnr == PC_REGNUM)
STATE_CPU (sd, 0)->cia.ip = T2H_4 (*(unsigned32*)buf);
else if (regnr == NPC_REGNUM)
STATE_CPU (sd, 0)->cia.dp = T2H_4 (*(unsigned32*)buf);
else if (regnr == A0_REGNUM && regnr <= An_REGNUM)
STATE_CPU (sd, 0)->acc[regnr - A0_REGNUM] = H2T_8 (*(unsigned64*)buf);
else
sim_io_error (sd, "sim_fetch_register - unknown register nr %d", regnr);
return;
}