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| author | Jeff Law <law@redhat.com> | 1996-08-31 07:28:22 +0000 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 1996-08-31 07:28:22 +0000 |
| commit | 574b9cb3d3471eba6dab1e1492ad4b265a7babf8 (patch) | |
| tree | 763ccf351bb25fab59abb99d6bf676c42a857470 /opcodes/v850-opc.c | |
| parent | 6cff464b3a78db1a38ff8e9f40221f342c37993d (diff) | |
| download | gdb-574b9cb3d3471eba6dab1e1492ad4b265a7babf8.zip gdb-574b9cb3d3471eba6dab1e1492ad4b265a7babf8.tar.gz gdb-574b9cb3d3471eba6dab1e1492ad4b265a7babf8.tar.bz2 | |
* v850-opc.c (insert_d22, extract_d22): New functions.
(v850_operands): Use insert_d22 and extract_d22 for
D22 operands.
(insert_d9): Fix range check.
Diffstat (limited to 'opcodes/v850-opc.c')
| -rw-r--r-- | opcodes/v850-opc.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/opcodes/v850-opc.c b/opcodes/v850-opc.c index 2cd98e8..5239d80 100644 --- a/opcodes/v850-opc.c +++ b/opcodes/v850-opc.c @@ -4,6 +4,8 @@ /* Local insertion and extraction functions. */ 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 *)); /* regular opcode */ #define OP(x) ((x & 0x3f) << 5) @@ -58,7 +60,7 @@ const struct v850_operand v850_operands[] = { /* The DISP22 field in a format 4 insn. */ #define D22 (D16+1) - { 22, 0, 0, 0, V850_OPERAND_SIGNED }, + { 22, 0, insert_d22, extract_d22, V850_OPERAND_SIGNED }, #define B3 (D22+1) /* The 3 bit immediate field in format 8 insn. */ @@ -258,7 +260,7 @@ insert_d9 (insn, value, errmsg) long value; const char **errmsg; { - if (value > 511 || value <= -512) + if (value > 255 || value <= -256) *errmsg = "value out of range"; return (insn | ((value & 0x1f0) << 7) | ((value & 0x0e) << 3)); @@ -276,3 +278,25 @@ extract_d9 (insn, invalid) return ret; } + +static unsigned long +insert_d22 (insn, value, errmsg) + unsigned long insn; + long value; + const char **errmsg; +{ + if (value > 0xfffff || value <= -0x100000) + *errmsg = "value out of range"; + + return (insn | ((value & 0xfffe) << 16) | ((value & 0x3f0000) >> 16)); +} + +static long +extract_d22 (insn, invalid) + unsigned long insn; + int *invalid; +{ + int ret = ((insn & 0xfffe0000) >> 16) | ((insn & 0x3f) << 16); + + return ((ret << 10) >> 10); +} |