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| author | Alan Modra <amodra@gmail.com> | 2013-05-09 04:32:55 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2013-05-09 04:32:55 +0000 |
| commit | 9f0682fe89d9bb1107239411dc555d4063543ce0 (patch) | |
| tree | b877e848ad529d45b1b3e7b0a0325743a6a771e6 /opcodes | |
| parent | da8094d7964e634fb0ec5632d36f9bd282f3170e (diff) | |
| download | gdb-9f0682fe89d9bb1107239411dc555d4063543ce0.zip gdb-9f0682fe89d9bb1107239411dc555d4063543ce0.tar.gz gdb-9f0682fe89d9bb1107239411dc555d4063543ce0.tar.bz2 | |
* ppc-opc.c (extract_vlesi): Properly sign extend.
(extract_vlensi): Likewise. Comment reason for setting invalid.
Diffstat (limited to 'opcodes')
| -rw-r--r-- | opcodes/ChangeLog | 5 | ||||
| -rw-r--r-- | opcodes/ppc-opc.c | 9 |
2 files changed, 8 insertions, 6 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 88f9294..e918abc 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,8 @@ +2013-05-09 Alan Modra <amodra@gmail.com> + + * ppc-opc.c (extract_vlesi): Properly sign extend. + (extract_vlensi): Likewise. Comment reason for setting invalid. + 2013-05-02 Nick Clifton <nickc@redhat.com> * msp430-dis.c: Add support for MSP430X instructions. diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c index 80dfa24..62edf02 100644 --- a/opcodes/ppc-opc.c +++ b/opcodes/ppc-opc.c @@ -2022,11 +2022,8 @@ extract_vlesi (unsigned long insn, ppc_cpu_t dialect ATTRIBUTE_UNUSED, int *invalid ATTRIBUTE_UNUSED) { - /* RWRW Because I don't know how to make int be 16 and long be 32 */ - /* I can't rely on casting an int to long to get sign extension. */ long value = ((insn >> 10) & 0xf800) | (insn & 0x7ff); - if (value & 0x8000) - value |= 0xffff0000; + value = (value ^ 0x8000) - 0x8000; return value; } @@ -2045,8 +2042,8 @@ extract_vlensi (unsigned long insn, int *invalid ATTRIBUTE_UNUSED) { long value = ((insn >> 10) & 0xf800) | (insn & 0x7ff); - if (value & 0x8000) - value |= 0xffff0000; + value = (value ^ 0x8000) - 0x8000; + /* Don't use for disassembly. */ *invalid = 1; return -value; } |