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svp compiler: added first wait loop detection

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@363 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-02-24 23:49:06 +00:00
parent 5d817c9138
commit b9c1d0129a
4 changed files with 164 additions and 15 deletions
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136
Pico/carthw/svp/compiler.c
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@ -13,7 +13,7 @@ static int nblocks = 0;
static int iram_context = 0;
#ifndef ARM
#define DUMP_BLOCK 0x40b0
#define DUMP_BLOCK 0x84a
unsigned int tcache[512*1024];
void regfile_load(void){}
void regfile_store(void){}
@ -635,7 +635,7 @@ static void tr_bank_write(int addr)
}
breg = 1;
}
EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // str r0, [r1, (op&0x7f)<<1]
EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1]
}
/* handle RAM bank pointer modifiers. Nothing is trashed. */
@ -669,6 +669,89 @@ static void tr_ptrr_mod(int r, int mod, int need_modulo)
}
}
// SSP_GR0, SSP_X, SSP_Y, SSP_A,
// SSP_ST, SSP_STACK, SSP_PC, SSP_P,
//@ r4: XXYY
//@ r5: A
//@ r6: STACK and emu flags
//@ r7: SSP context
//@ r10: P
// write r0 to general reg handlers. Trashes r1
static void tr_r0_unhandled(void)
{
printf("unhandled\n");
exit(1);
}
static void tr_r0_to_GR0(void)
{
// do nothing
}
static void tr_r0_to_X(void)
{
EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16
EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16
EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16
}
static void tr_r0_to_Y(void)
{
EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16
EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16
EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16
}
static void tr_r0_to_A(void)
{
EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16
EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsl #16 @ AL
EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16
hostreg_r[0] = 0x20000;
}
static void tr_r0_to_ST(void)
{
// VR doesn't need much accuracy here..
EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67
EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK
EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4
hostreg_r[1] = -1;
}
static void tr_r0_to_STACK(void)
{
// 448
EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400
EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048
EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #26
EOP_STRH_SIMPLE(0, 1); // strh r0, [r1]
EOP_ADD_IMM(6, 6, 24/2, 0x20); // add r6, r6, #1<<29
hostreg_r[1] = -1;
}
static void tr_r0_to_PC(void)
{
EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16
EOP_STR_IMM(0,7,0x400+6*4); // str r0, [r7, #(0x400+6*8)]
hostreg_r[1] = -1;
}
typedef void (tr_write_func)(void);
static tr_write_func *tr_write_funcs[8] =
{
tr_r0_to_GR0,
tr_r0_to_X,
tr_r0_to_Y,
tr_r0_to_A,
tr_r0_to_ST,
tr_r0_to_STACK,
tr_r0_to_PC,
tr_r0_unhandled
};
static int translate_op(unsigned int op, int *pc, int imm)
{
@ -685,16 +768,50 @@ static int translate_op(unsigned int op, int *pc, int imm)
// ld a, adr
case 0x03:
tr_bank_read(op&0x1ff);
EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16
EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsl #16 @ AL
EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16
tr_r0_to_A();
const_regb &= ~CRREG_A;
hostreg_r[0] = 0x20000;
ret++; break;
// ldi d, imm
case 0x04:
tmpv = (op & 0xf0) >> 4;
if (tmpv < 8)
{
tr_mov16(0, imm);
tr_write_funcs[tmpv]();
const_regs.gr[tmpv].h = imm;
const_regb |= 1 << tmpv;
ret++; break;
}
else if (tmpv == 0xe && (PROGRAM(*pc) >> 9) == 4)
{
// programming PMC..
(*pc)++;
tmpv = imm | (PROGRAM((*pc)++) << 16);
emit_mov_const(0, tmpv);
EOP_LDR_IMM(1,7,0x484); // ldr r0, [r7, #0x484] // emu_status
EOP_STR_IMM(0,7,0x400+14*4); // PMC
// TODO: do this only on reads
if (tmpv == 0x187f04) { // fe08
EOP_LDR_IMM(0,7,0x490); // dram_ptr
EOP_ADD_IMM(0,0,24/2,0xfe); // add r0, r0, #0xfe00
EOP_LDRH_IMM(0,0,8); // ldrh r0, [r0, #8]
EOP_TST_REG_SIMPLE(0,0);
EOP_C_DOP_IMM(A_COND_EQ,A_OP_ADD,0,11,11,22/2,1); // add r11, r11, #1024
EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,SSP_WAIT_30FE08>>8); // orr r1, r1, #SSP_WAIT_30FE08
}
EOP_ORR_IMM(1,1,0,SSP_PMC_SET); // orr r1, r1, #SSP_PMC_SET
EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status
hostreg_r[0] = hostreg_r[1] = -1;
ret += 2; break;
}
else
return -1; /* TODO.. */
// ldi (ri), imm
case 0x06:
//tmpv = *PC++; ptr1_write(op, tmpv); break;
// int t = (op&3) | ((op>>6)&4) | ((op<<1)&0x18);
tr_mov16(0, imm);
if ((op&3) == 3)
@ -860,10 +977,17 @@ int ssp1601_dyn_startup(void)
void ssp1601_dyn_reset(ssp1601_t *ssp)
{
ssp1601_reset_local(ssp);
ssp->rom_ptr = (unsigned int) Pico.rom;
ssp->iram_ptr = (unsigned int) svp->iram_rom;
ssp->dram_ptr = (unsigned int) svp->dram;
}
void ssp1601_dyn_run(int cycles)
{
if (ssp->emu_status & SSP_WAIT_MASK) return;
//{ printf("%i wait\n", Pico.m.frame_count); return; }
//printf("%i %04x\n", Pico.m.frame_count, rPC<<1);
#ifdef DUMP_BLOCK
rPC = DUMP_BLOCK >> 1;
#endif