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unicorn/qemu/target/mips
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Mateja Marjanovic d712d3f226
target/mips: Make the results of DIV_<U|S>.<B|H|W|D> the same as on hardware 
MSA instructions DIV_<U|S>.<B|H|W|D> when dividing by zero,
didn't return the same value when executed on a referent hardware
(FPGA MIPS 64 r6, little endian) and when executed on QEMU, which
is not a real bug, because the result when dividing by zero is
UNPREDICTABLE [1] (page 141, 142).

[1] MIPS Architecture for Programmers
Volume IV-j: The MIPS64 SIMD
Architecture Module, Revision 1.12

Backports commit d2a40a5f6938f30f44b536e997e1e89bb62b971c from qemu
2019-05-28 19:24:26 -04:00
..
cp0_timer.c mips: introduce internal.h and cleanup cpu.h 2018-03-05 00:25:56 -05:00
cpu-qom.h mips: MIPSCPU model subclasses 2018-03-05 00:42:29 -05:00
cpu.c target/mips: Convert to CPUClass::tlb_fill 2019-05-16 17:19:47 -04:00
cpu.h target/mips: reimplement SC instruction emulation and use cmpxchg 2019-02-15 17:10:16 -05:00
dsp_helper.c mips: Improve macro parenthesization 2018-03-05 00:51:51 -05:00
helper.c tcg: Use CPUClass::tlb_fill in cputlb.c 2019-05-16 17:35:37 -04:00
helper.h target/mips: reimplement SC instruction emulation and use cmpxchg 2019-02-15 17:10:16 -05:00
internal.h target/mips: Convert to CPUClass::tlb_fill 2019-05-16 17:19:47 -04:00
lmi_helper.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
Makefile.objs mips: introduce internal.h and cleanup cpu.h 2018-03-05 00:25:56 -05:00
mips-defs.h target/mips: Define a bit for MXU in insn_flags 2018-11-11 05:52:18 -05:00
msa_helper.c target/mips: Make the results of DIV_<U|S>.<B|H|W|D> the same as on hardware 2019-05-28 19:24:26 -04:00
op_helper.c target/mips: Convert to CPUClass::tlb_fill 2019-05-16 17:19:47 -04:00
TODO Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
translate.c tcg: Hoist max_insns computation to tb_gen_code 2019-04-30 09:49:57 -04:00
translate_init.c target/mips: Restore Qemu's organization of CPU definitions 2019-03-08 01:40:50 -05:00
unicorn.c Use DEFINE_MACHINE() to register all machines 2018-03-11 15:12:46 -04:00
unicorn.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00