svp compiler, early stage, works

[picodrive.git] / Pico / carthw / svp / gen_arm.c

diff --git a/Pico/carthw/svp/gen_arm.c b/Pico/carthw/svp/gen_arm.c
index 30e8f84..3036413 100644 (file)
--- a/Pico/carthw/svp/gen_arm.c
+++ b/Pico/carthw/svp/gen_arm.c
@@ -53,15 +53,30 @@
 #define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm)
 
 
-static void emit_mov_const16(int d, unsigned int val)
+static void emit_mov_const(int d, unsigned int val)
 {
        int need_or = 0;
-       if (val & 0xff00) {
-               EOP_MOV_IMM(0, d, 24/2, (val>>8)&0xff);
+       if (val & 0xff000000) {
+               EOP_MOV_IMM(0, d,  8/2, (val>>24)&0xff);
                need_or = 1;
        }
-       if ((val & 0xff) || !need_or)
-               EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, d, d, 0, val&0xff);
+       if (val & 0x00ff0000) {
+               EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 16/2, (val>>16)&0xff);
+               need_or = 1;
+       }
+       if (val & 0x0000ff00) {
+               EOP_C_DOP_IMM(A_COND_AL,need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 24/2, (val>>8)&0xff);
+               need_or = 1;
+       }
+       if ((val &0x000000ff) || !need_or)
+               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)
@@ -74,8 +89,10 @@ static void emit_block_epilogue(unsigned int *block_start, int icount)
 {
        int back = (tcache_ptr - block_start) + 2;
        back += 3; // g_cycles
+       check_offset_12(back<<2);
+
        EOP_LDR_NEGIMM(2,15,back<<2);           // ldr r2,[pc,#back]
-       emit_mov_const16(3, icount);
+       emit_mov_const(3, icount);
        EOP_STR_SIMPLE(3,2);                    // str r3,[r2]
 
        EOP_LDMFD_ST(A_R14M);                   // ldmfd r13!, {r14}
@@ -86,8 +103,10 @@ static void emit_pc_inc(unsigned int *block_start, int pc)
 {
        int back = (tcache_ptr - block_start) + 2;
        back += 2; // rPC ptr
+       check_offset_12(back<<2);
+
        EOP_LDR_NEGIMM(2,15,back<<2);           // ldr r2,[pc,#back]
-       emit_mov_const16(3, pc);
+       emit_mov_const(3, pc<<16);
        EOP_STR_SIMPLE(3,2);                    // str r3,[r2]
 }
 
@@ -95,9 +114,21 @@ static void emit_call(unsigned int *block_start, unsigned int op1)
 {
        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]
 }
 
+static void handle_caches()
+{
+#ifdef ARM
+       extern void flush_inval_caches(const void *start_addr, const void *end_addr);
+       flush_inval_caches(tcache, tcache_ptr);
+#else
+#error wth
+#endif
+}
+