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* v850-opc.c (insert_d16_15, extract_d16_15): New functions.

Browse source 
(v850_operands): Change D16 to D16_15, use special insert/extract
        routines.  New new D16 that uses the generic insert/extract code.
        (IF7A, IF7B): Use D16_15.
        (IF7C, IF7D): New.  Use D16.
        (v850_opcodes): Use IF7C and IF7D for ld.b and st.b.
This commit is contained in:
Jeff Law 1996-08-31 17:43:28 +00:00
parent fb8c25a3e4
commit c6b9c13532
2 changed files with 52 additions and 11 deletions
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7
opcodes/ChangeLog
View file

@ -1,6 +1,13 @@
start-sanitize-v850
Sat Aug 31 01:27:26 1996 Jeffrey A Law (law@cygnus.com)
* v850-opc.c (insert_d16_15, extract_d16_15): New functions.
(v850_operands): Change D16 to D16_15, use special insert/extract
routines. New new D16 that uses the generic insert/extract code.
(IF7A, IF7B): Use D16_15.
(IF7C, IF7D): New. Use D16.
(v850_opcodes): Use IF7C and IF7D for ld.b and st.b.
* v850-opc.c (insert_d9, insert_d22): Slightly improve error
message. Issue an error if the branch offset is odd.

56
opcodes/v850-opc.c
View file

@ -3,8 +3,6 @@
/* TODO:
* ld.h, ld.w st.h and st.w will need special insert/extract code.
* All sld instructions will need special insert/extrat code. */
/* Local insertion and extraction functions. */
@ -12,6 +10,9 @@ static unsigned long insert_d9 PARAMS ((unsigned long, long, const char **));
static long extract_d9 PARAMS ((unsigned long, int *));
static unsigned long insert_d22 PARAMS ((unsigned long, long, const char **));
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 *));
/* regular opcode */
#define OP(x) ((x & 0x3f) << 5)
@ -61,11 +62,11 @@ const struct v850_operand v850_operands[] = {
{ 9, 0, insert_d9, extract_d9, V850_OPERAND_SIGNED },
/* The DISP16 field in a format 6 insn. */
#define D16 (D9+1)
{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
#define D16_15 (D9+1)
{ 16, 16, insert_d16_15, extract_d16_15, V850_OPERAND_SIGNED },
/* The DISP22 field in a format 4 insn. */
#define D22 (D16+1)
#define D22 (D16_15+1)
{ 22, 0, insert_d22, extract_d22, V850_OPERAND_SIGNED },
#define B3 (D22+1)
@ -96,6 +97,10 @@ const struct v850_operand v850_operands[] = {
#define SR2 (I16U+1)
{ 5, 11, 0, 0, V850_OPERAND_SRG },
/* The DISP16 field in a format 8 insn. */
#define D16 (SR2+1)
{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
} ;
@ -123,9 +128,13 @@ const struct v850_operand v850_operands[] = {
/* 3 operand instruction (Format VI) */
#define IF6U {I16U, R1, R2}
/* 32-bit load/store instruction (Format VII) */
#define IF7A {D16, R1, R2}
#define IF7B {R2, D16, R1}
/* 32-bit load/store half/word instruction (Format VII) */
#define IF7A {D16_15, R1, R2}
#define IF7B {R2, D16_15, R1}
/* 32-bit load/store byte instruction (Format VII) */
#define IF7C {D16, R1, R2}
#define IF7D {R2, D16, R1}
/* Bit manipulation function. */
@ -157,10 +166,10 @@ const struct v850_opcode v850_opcodes[] = {
{ "sst.h", one(0x0480), one(0x0780), IF4D, 2 },
{ "sst.w", one(0x0501), one(0x0781), IF4D, 2 },
{ "ld.b", two(0x0700,0x0000), two (0x07e0,0x0000), IF7A, 4 },
{ "ld.b", two(0x0700,0x0000), two (0x07e0,0x0000), IF7C, 4 },
{ "ld.h", two(0x0720,0x0000), two (0x07e0,0x0001), IF7A, 4 },
{ "ld.w", two(0x0720,0x0001), two (0x07e0,0x0001), IF7A, 4 },
{ "st.b", two(0x0740,0x0000), two (0x07e0,0x0000), IF7B, 4 },
{ "st.b", two(0x0740,0x0000), two (0x07e0,0x0000), IF7D, 4 },
{ "st.h", two(0x0760,0x0000), two (0x07e0,0x0001), IF7B, 4 },
{ "st.w", two(0x0760,0x0001), two (0x07e0,0x0001), IF7B, 4 },
@ -295,7 +304,7 @@ insert_d22 (insn, value, errmsg)
const char **errmsg;
{
if (value > 0xfffff || value <= -0x100000)
*errmsg = "value out of range";
*errmsg = "branch value out of range";
if ((value % 2) != 0)
*errmsg = "branch to odd offset";
@ -312,3 +321,28 @@ extract_d22 (insn, invalid)
return ((ret << 10) >> 10);
}
static unsigned long
insert_d16_15 (insn, value, errmsg)
unsigned long insn;
long value;
const char **errmsg;
{
if (value > 0x7fff || value <= -0x8000)
*errmsg = "value out of range";
if ((value % 2) != 0)
*errmsg = "load/store at odd offset";
return (insn | ((value & 0xfffe) << 16));
}
static long
extract_d16_15 (insn, invalid)
unsigned long insn;
int *invalid;
{
int ret = ((insn & 0xfffe0000) >> 16);
return ((ret << 16) >> 16);
}