#define EMIT(x) *tcache_ptr++ = x
+#define A_R4M (1 << 4)
+#define A_R5M (1 << 5)
+#define A_R6M (1 << 6)
+#define A_R7M (1 << 7)
+#define A_R8M (1 << 8)
+#define A_R9M (1 << 9)
+#define A_R10M (1 << 10)
+#define A_R11M (1 << 11)
#define A_R14M (1 << 14)
#define A_COND_AL 0xe
#define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,offset_12)
#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,0,0,1,rn,rd,offset_12)
#define EOP_LDR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,1,rn,rd,0)
+#define EOP_STR_IMM( rd,rn,offset_12) EOP_C_XXR_IMM(A_COND_AL,1,0,0,rn,rd,offset_12)
#define EOP_STR_SIMPLE(rd,rn) EOP_C_XXR_IMM(A_COND_AL,1,0,0,rn,rd,0)
/* ldm and stm */
#define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm)
+#define EOP_C_B(cond,l,signed_immed_24) \
+ EMIT(((cond)<<28) | 0x0a000000 | ((l)<<24) | (signed_immed_24))
+
+#define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24)
+#define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24)
+
static void emit_mov_const(int d, unsigned int val)
{
EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 0, val&0xff);
}
+/*
static void check_offset_12(unsigned int val)
{
if (!(val & ~0xfff)) return;
printf("offset_12 overflow %04x\n", val);
exit(1);
}
+*/
-static void emit_block_prologue(void)
+static void check_offset_24(int val)
{
- // stack LR
- EOP_STMFD_ST(A_R14M); // stmfd r13!, {r14}
+ if (val >= (int)0xff000000 && val <= 0x00ffffff) return;
+ printf("offset_24 overflow %08x\n", val);
+ exit(1);
}
-static void emit_block_epilogue(unsigned int *block_start, int icount)
+static void emit_call(void *target)
{
- int back = (tcache_ptr - block_start) + 2;
- back += 3; // g_cycles
- check_offset_12(back<<2);
+ int val = (unsigned int *)target - tcache_ptr - 2;
+ check_offset_24(val);
- EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
- emit_mov_const(3, icount);
- EOP_STR_SIMPLE(3,2); // str r3,[r2]
+ EOP_BL(val & 0xffffff); // bl target
+}
- EOP_LDMFD_ST(A_R14M); // ldmfd r13!, {r14}
- EOP_BX(14); // bx r14
+static void emit_block_prologue(void)
+{
+ // stack regs
+ EOP_STMFD_ST(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R14M); // stmfd r13!, {r4-r11,lr}
+ emit_call(regfile_load);
}
-static void emit_pc_inc(unsigned int *block_start, int pc)
+static void emit_block_epilogue(int icount)
{
- int back = (tcache_ptr - block_start) + 2;
- back += 2; // rPC ptr
- check_offset_12(back<<2);
+ emit_call(regfile_store);
+ EOP_LDMFD_ST(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R14M); // ldmfd r13!, {r4-r11,lr}
+ emit_mov_const(0, icount);
+ EOP_BX(14); // bx r14
+}
- EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
+static void emit_pc_dump(int pc)
+{
emit_mov_const(3, pc<<16);
- EOP_STR_SIMPLE(3,2); // str r3,[r2]
+ EOP_STR_IMM(3,7,0x400+6*4); // str r3, [r7, #(0x400+6*8)]
}
-static void emit_call(unsigned int *block_start, unsigned int op1)
+static void emit_interpreter_call(void *target)
{
- int back = (tcache_ptr - block_start) + 2;
- back += 1; // func table
- check_offset_12(back<<2);
-
- EOP_LDR_NEGIMM(2,15,back<<2); // ldr r2,[pc,#back]
- EOP_MOV_REG_SIMPLE(14,15); // mov lr,pc
- EOP_LDR_IMM(15,2,op1<<2); // ldr pc,[r2,#op1]
+ emit_call(regfile_store);
+ emit_call(target);
+ emit_call(regfile_load);
}
static void handle_caches()