summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--assemble.c51
-rw-r--r--opcode.h27
-rw-r--r--sux.c23
-rw-r--r--sux.h51
4 files changed, 59 insertions, 93 deletions
diff --git a/assemble.c b/assemble.c
index 990ca96..1ed4960 100644
--- a/assemble.c
+++ b/assemble.c
@@ -25,10 +25,9 @@ uint8_t get_rs(token *t, uint8_t inst, uint8_t dbg) {
uint64_t get_val(token *t, uint64_t addr, uint8_t size, uint8_t dbg) {
uint64_t value = 0;
uint64_t tmp_val = 0;
- uint16_t expr_count = 0;
uint8_t type = EXPR_NONE;
do {
- if (expr_count) {
+ if (t->id == TOK_EXPR) {
type = t->type;
t = t->next;
}
@@ -36,15 +35,9 @@ uint64_t get_val(token *t, uint64_t addr, uint8_t size, uint8_t dbg) {
case TOK_HEX:
case TOK_DEC:
case TOK_BIN:
- case TOK_CHAR:
- tmp_val = t->qword;
- t = t->next;
- break;
+ case TOK_CHAR: tmp_val = t->qword; t = t->next; break;
case TOK_SYM:
- case TOK_LABEL:
- tmp_val = (t->sym) ? t->sym->val : addr;
- t = t->next;
- break;
+ case TOK_LABEL: tmp_val = (t->sym) ? t->sym->val : addr; t = t-> next; break;
}
switch (type) {
case EXPR_PLUS : value += tmp_val; break;
@@ -67,11 +60,7 @@ uint64_t get_val(token *t, uint64_t addr, uint8_t size, uint8_t dbg) {
break;
case EXPR_NONE : value = tmp_val; break;
}
- expr_count++;
- if (!t) {
- break;
- }
- } while (t->id == TOK_EXPR && isexpr(t->type, dbg));
+ } while (t && t->id == TOK_EXPR && isexpr(t->type, dbg));
return value;
}
@@ -186,7 +175,7 @@ uint64_t handle_opcode(token *t, bytecount *bc, uint8_t isasm, uint64_t address,
break;
}
tmp = 0;
- opsize = 0;
+ opsize = 1;
opcode = 0;
if (t->next) {
rs = get_rs(t->next, inst, dbg);
@@ -231,35 +220,13 @@ uint64_t handle_opcode(token *t, bytecount *bc, uint8_t isasm, uint64_t address,
}
address++;
bc->progsize++;
- switch (rs) {
- case 3:
- if (isasm) {
- addr[address+7] = val.u8[7];
- addr[address+6] = val.u8[6];
- addr[address+5] = val.u8[5];
- addr[address+4] = val.u8[4];
- }
- tmp += 4;
- case 2:
- if (isasm) {
- addr[address+3] = val.u8[3];
- addr[address+2] = val.u8[2];
- }
- tmp += 2;
- case 1 :
- if (isasm) {
- addr[address+1] = val.u8[1];
- }
- tmp++;
- default:
- if (isasm) {
- addr[address ] = val.u8[0];
- }
- tmp++;
+ rs = (rs != 0xFF) ? rs : 0;
+ tmp = (1 << rs);
+ if (isasm) {
+ setreg(addr, +, address, val.u8, +, 0, tmp-1);
}
break;
default:
- opsize = (val.u64 <= 0x00000000000000FF) ? 1 : opsize;
opsize = (val.u64 > 0x00000000000000FF) ? 2 : opsize;
opsize = (val.u64 > 0x000000000000FFFF) ? 3 : opsize;
opsize = (val.u64 > 0x0000000000FFFFFF) ? 4 : opsize;
diff --git a/opcode.h b/opcode.h
index 833bfe5..b98803b 100644
--- a/opcode.h
+++ b/opcode.h
@@ -18,6 +18,31 @@
#define V (1 << 6) /* oVerflow flag. */
#define N (1 << 7) /* Negative flag. */
+extern uint8_t get_addrsize(uint8_t prefix, uint8_t addrmode);
+
+/* reg_expr, and val_expr are the arithmetic expressions
+ * that will be used for either the value, or register, such as '+', or '-'.
+ */
+#define setreg(reg, reg_expr, reg_idx, val, val_expr, val_idx, size) {\
+ switch (size) {\
+ case 7: reg[(reg_idx) reg_expr 7] = val[(val_idx) val_expr 7];\
+ case 6: reg[(reg_idx) reg_expr 6] = val[(val_idx) val_expr 6];\
+ case 5: reg[(reg_idx) reg_expr 5] = val[(val_idx) val_expr 5];\
+ case 4: reg[(reg_idx) reg_expr 4] = val[(val_idx) val_expr 4];\
+ case 3: reg[(reg_idx) reg_expr 3] = val[(val_idx) val_expr 3];\
+ case 2: reg[(reg_idx) reg_expr 2] = val[(val_idx) val_expr 2];\
+ case 1: reg[(reg_idx) reg_expr 1] = val[(val_idx) val_expr 1];\
+ case 0: reg[(reg_idx) reg_expr 0] = val[(val_idx) val_expr 0];\
+ }\
+}
+
+#define setreg_sw(reg, reg_idx, val, val_idx, prefix, addrmode, type) {\
+ switch (type) {\
+ case RS: setreg(reg, +, reg_idx, val, +, val_idx, (1 << (prefix >> 4))-1); break;\
+ case AM: setreg(reg, +, reg_idx, val, +, val_idx, get_addrsize(prefix, addrmode)); break;\
+ }\
+}
+
extern uint8_t *addr; /* Address Space. */
union reg {
@@ -37,3 +62,5 @@ struct sux {
};
extern int asmmon();
+
+enum sw_type {RS, AM, BYTE};
diff --git a/sux.c b/sux.c
index 9ae05f5..49ec881 100644
--- a/sux.c
+++ b/sux.c
@@ -47,6 +47,29 @@ double ipc;
struct timeval str[THREADS], en[THREADS];
#endif
+inline uint8_t get_addrsize(uint8_t prefix, uint8_t addrmode) {
+ uint8_t id = (prefix & 0x0C) >> 2;
+ switch (addrmode) {
+ case ZM:
+ switch (id) {
+ case 2: return 5;
+ case 3: return 3;
+ case 1: return 2;
+ case 0: return 0;
+ }
+ break;
+ case ABS:
+ switch (id) {
+ case 3: return 7;
+ case 2: return 6;
+ case 1: return 4;
+ case 0: return 1;
+ }
+ break;
+ }
+ return 0;
+}
+
void *run(void *args) {
struct suxthr *thr = (void *)args;
struct sux *cpu = &thr->sx;
diff --git a/sux.h b/sux.h
index 2b608f1..84cc3a6 100644
--- a/sux.h
+++ b/sux.h
@@ -25,37 +25,9 @@ extern uint8_t subdbg;
extern uint8_t step;
extern uint8_t esc;
-static inline uint8_t get_addrsize(uint8_t prefix, uint8_t addrmode);
-
-enum sw_type {RS, AM, BYTE};
-
#define setflag(flag, bit) ((flag)) ? (cpu->ps.u8[thread] |= bit) : (cpu->ps.u8[thread] &= ~bit)
#define getflag(bit) (cpu->ps.u8[thread] & bit)
-/* reg_expr, and val_expr are the arithmetic expressions
- * that will be used for either the value, or register, such as '+', or '-'.
- */
-#define setreg(reg, reg_expr, reg_idx, val, val_expr, val_idx, size) {\
- switch (size) {\
- case 7: reg[(reg_idx) reg_expr 7] = val[(val_idx) val_expr 7];\
- case 6: reg[(reg_idx) reg_expr 6] = val[(val_idx) val_expr 6];\
- case 5: reg[(reg_idx) reg_expr 5] = val[(val_idx) val_expr 5];\
- case 4: reg[(reg_idx) reg_expr 4] = val[(val_idx) val_expr 4];\
- case 3: reg[(reg_idx) reg_expr 3] = val[(val_idx) val_expr 3];\
- case 2: reg[(reg_idx) reg_expr 2] = val[(val_idx) val_expr 2];\
- case 1: reg[(reg_idx) reg_expr 1] = val[(val_idx) val_expr 1];\
- case 0: reg[(reg_idx) reg_expr 0] = val[(val_idx) val_expr 0];\
- }\
-}
-
-#define setreg_sw(reg, reg_idx, val, val_idx, prefix, addrmode, type) {\
- switch (type) {\
- case RS: setreg(reg, +, reg_idx, val, +, val_idx, (1 << (prefix >> 4))-1); break;\
- case AM: setreg(reg, +, reg_idx, val, +, val_idx, get_addrsize(prefix, addrmode)); break;\
- }\
-}
-
-
extern pthread_mutex_t mutex;
extern pthread_mutex_t main_mutex;
extern pthread_cond_t cond;
@@ -67,29 +39,6 @@ extern void disasm(struct sux *cpu, uint64_t *operands, uint8_t lines, uint8_t o
extern void io(uint64_t address, uint8_t rw);
-static inline uint8_t get_addrsize(uint8_t prefix, uint8_t addrmode) {
- uint8_t id = (prefix & 0x0C) >> 2;
- switch (addrmode) {
- case ZM:
- switch (id) {
- case 2: return 5;
- case 3: return 3;
- case 1: return 2;
- case 0: return 0;
- }
- break;
- case ABS:
- switch (id) {
- case 3: return 7;
- case 2: return 6;
- case 1: return 4;
- case 0: return 1;
- }
- break;
- }
- return 0;
-}
-
static inline uint64_t get_addr(struct sux *cpu, uint64_t *tmpaddr, uint8_t opcode, uint8_t prefix, uint8_t thread) {
union reg address;
union reg value;
generated by cgit v1.2.3-13-gbd6f (git 2.30.0) at 2024-11-01 00:03:39 +0000