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| author | Aleksandar Markovic <aleksandar.markovic@imgtec.com> | 2016-06-10 11:57:34 +0200 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2016-06-24 13:41:46 +0100 |
| commit | 6be77480052b1a71557081896e7080363a8a2f95 (patch) | |
| tree | 0f4151e1bbf051be41ce5b9be8cf8b54dcf5e36e /hw/intc/apic_common.c | |
| parent | 40bd6dd456e61a36e454fb9dd2cc739b67c224cf (diff) | |
| download | focaccia-qemu-6be77480052b1a71557081896e7080363a8a2f95.tar.gz focaccia-qemu-6be77480052b1a71557081896e7080363a8a2f95.zip | |
target-mips: Add abs2008 flavor of <ABS|NEG>.<S|D>
Updated handling of instructions <ABS|NEG>.<S|D>. Note that legacy
(pre-abs2008) ABS and NEG instructions are arithmetic (and, therefore,
any NaN operand causes signaling invalid operation), while abs2008
ones are non-arithmetic, always and only changing the sign bit, even
for NaN-like operands. Details on these instructions are documented
in [1] p. 35 and 359.
Implementation-wise, abs2008 versions are implemented without helpers,
for simplicity and performance sake.
[1] "MIPS Architecture For Programmers Volume II-A:
The MIPS64 Instruction Set Reference Manual",
Imagination Technologies LTD, Revision 6.04, November 13, 2015
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Diffstat (limited to 'hw/intc/apic_common.c')
0 files changed, 0 insertions, 0 deletions