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authorJeff Law <law@redhat.com>1996-08-31 18:23:02 +0000
committerJeff Law <law@redhat.com>1996-08-31 18:23:02 +0000
commitb2194164780e094bb550ff70746ef27e9c36e2c9 (patch)
tree6a2848f54aa81903ce80c3bd0667c1a134d8d0cd /opcodes/v850-opc.c
parentc6b9c13532da49f98393c77a5ba7233a40923e82 (diff)
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* v850-opc.c (insert_d8_7, extract_d8_7): New functions.
(insert_d8_6, extract_d8_6): New functions. (v850_operands): Rename D7S to D7; operand for D7 is unsigned. Rename D8 to D8_7, use {insert,extract}_d8_7 routines. Add D8_6. (IF4A, IF4B): Use "D7" instead of "D7S". (IF4C, IF4D): Use "D8_7" instead of "D8". (IF4E, IF4F): New. Use "D8_6". (v850_opcodes): Use IF4A/IF4B for sld.b/sst.b. Use IF4C/IF4D for sld.h/sst.h. Use IF4E/IF4F for sld.w/sst.w. So we can assemble sst/sld instructions correctly.
Diffstat (limited to 'opcodes/v850-opc.c')
-rw-r--r--opcodes/v850-opc.c98
1 files changed, 79 insertions, 19 deletions
diff --git a/opcodes/v850-opc.c b/opcodes/v850-opc.c
index d2b7ca5..a1c8953 100644
--- a/opcodes/v850-opc.c
+++ b/opcodes/v850-opc.c
@@ -1,10 +1,6 @@
#include "ansidecl.h"
#include "opcode/v850.h"
-/* TODO:
-
- * All sld instructions will need special insert/extrat code. */
-
/* Local insertion and extraction functions. */
static unsigned long insert_d9 PARAMS ((unsigned long, long, const char **));
static long extract_d9 PARAMS ((unsigned long, int *));
@@ -13,6 +9,10 @@ static long extract_d22 PARAMS ((unsigned long, int *));
static unsigned long insert_d16_15 PARAMS ((unsigned long, long,
const char **));
static long extract_d16_15 PARAMS ((unsigned long, int *));
+static unsigned long insert_d8_7 PARAMS ((unsigned long, long, const char **));
+static long extract_d8_7 PARAMS ((unsigned long, int *));
+static unsigned long insert_d8_6 PARAMS ((unsigned long, long, const char **));
+static long extract_d8_6 PARAMS ((unsigned long, int *));
/* regular opcode */
#define OP(x) ((x & 0x3f) << 5)
@@ -54,11 +54,11 @@ const struct v850_operand v850_operands[] = {
{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
/* The signed DISP7 field in a format 4 insn. */
-#define D7S (I16+1)
- { 7, 0, 0, 0, V850_OPERAND_SIGNED },
+#define D7 (I16+1)
+ { 7, 0, 0, 0, 0},
/* The DISP9 field in a format 3 insn. */
-#define D9 (D7S+1)
+#define D9 (D7+1)
{ 9, 0, insert_d9, extract_d9, V850_OPERAND_SIGNED },
/* The DISP16 field in a format 6 insn. */
@@ -77,12 +77,16 @@ const struct v850_operand v850_operands[] = {
/* The 4 bit condition code in a setf instruction */
{ 4, 0, 0, 0, V850_OPERAND_CC },
-/* The unsigned DISP8 field in a format 4 insn. */
-#define D8 (CCCC+1)
- { 8, 0, 0, 0, 0 },
+/* The unsigned DISP8_7 field in a format 4 insn. */
+#define D8_7 (CCCC+1)
+ { 8, 0, insert_d8_7, extract_d8_7, 0 },
+
+/* The unsigned DISP8_6 field in a format 4 insn. */
+#define D8_6 (D8_7+1)
+ { 8, 0, insert_d8_6, extract_d8_6, 0 },
/* System register operands. */
-#define SR1 (D8+1)
+#define SR1 (D8_6+1)
{ 5, 0, 0, 0, V850_OPERAND_SRG },
/* EP Register. */
@@ -114,10 +118,12 @@ const struct v850_operand v850_operands[] = {
#define IF3 {D9}
/* 16-bit load/store instruction (Format IV) */
-#define IF4A {D7S, EP, R2}
-#define IF4B {R2, D7S, EP}
-#define IF4C {D8, EP, R2}
-#define IF4D {R2, D8, EP}
+#define IF4A {D7, EP, R2}
+#define IF4B {R2, D7, EP}
+#define IF4C {D8_7, EP, R2}
+#define IF4D {R2, D8_7, EP}
+#define IF4E {D8_6, EP, R2}
+#define IF4F {R2, D8_6, EP}
/* Jump instruction (Format V) */
#define IF5 {D22}
@@ -160,11 +166,11 @@ const struct v850_operand v850_operands[] = {
const struct v850_opcode v850_opcodes[] = {
/* load/store instructions */
{ "sld.b", one(0x0300), one(0x0780), IF4A, 2 },
-{ "sld.h", one(0x0400), one(0x0780), IF4A, 2 },
-{ "sld.w", one(0x0500), one(0x0781), IF4A, 2 },
+{ "sld.h", one(0x0400), one(0x0780), IF4C, 2 },
+{ "sld.w", one(0x0500), one(0x0781), IF4E, 2 },
{ "sst.b", one(0x0380), one(0x0780), IF4B, 2 },
{ "sst.h", one(0x0480), one(0x0780), IF4D, 2 },
-{ "sst.w", one(0x0501), one(0x0781), IF4D, 2 },
+{ "sst.w", one(0x0501), one(0x0781), IF4F, 2 },
{ "ld.b", two(0x0700,0x0000), two (0x07e0,0x0000), IF7C, 4 },
{ "ld.h", two(0x0720,0x0000), two (0x07e0,0x0001), IF7A, 4 },
@@ -332,7 +338,7 @@ insert_d16_15 (insn, value, errmsg)
*errmsg = "value out of range";
if ((value % 2) != 0)
- *errmsg = "load/store at odd offset";
+ *errmsg = "load/store half/word at odd offset";
return (insn | ((value & 0xfffe) << 16));
}
@@ -346,3 +352,57 @@ extract_d16_15 (insn, invalid)
return ((ret << 16) >> 16);
}
+
+static unsigned long
+insert_d8_7 (insn, value, errmsg)
+ unsigned long insn;
+ long value;
+ const char **errmsg;
+{
+ if (value > 0xff || value < 0)
+ *errmsg = "short load/store half value out of range";
+
+ if ((value % 2) != 0)
+ *errmsg = "short load/store half at odd offset";
+
+ value >>= 1;
+
+ return (insn | (value & 0x7f));
+}
+
+static long
+extract_d8_7 (insn, invalid)
+ unsigned long insn;
+ int *invalid;
+{
+ int ret = (insn & 0x7f);
+
+ return ret << 1;
+}
+
+static unsigned long
+insert_d8_6 (insn, value, errmsg)
+ unsigned long insn;
+ long value;
+ const char **errmsg;
+{
+ if (value > 0xff || value < 0)
+ *errmsg = "short load/store word value out of range";
+
+ if ((value % 4) != 0)
+ *errmsg = "short load/store word at odd offset";
+
+ value >>= 1;
+
+ return (insn | (value & 0x7e));
+}
+
+static long
+extract_d8_6 (insn, invalid)
+ unsigned long insn;
+ int *invalid;
+{
+ int ret = (insn & 0x7e);
+
+ return ret << 1;
+}