https://bugs.kde.org/show_bug.cgi?id=429285
Bug ID: 429285
Summary: mips: Add support Loongson special instruction
Product: valgrind
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: vex
Assignee: jsew...@acm.org
Reporter: suxingx...@loongson.cn
Target Milestone: ---
SUMMARY
mips: Add support Loongson special instruction
Implement Loonson MIPS specific instructions :
Multiplication, the result is written to the general purpose register:
GSMULT, GSDMULT, GSMULTU, GSDMULTU
Division, quotient write general purpose register:
GSDIV, GSDDIV, GSDIVU, GSDDIVU
Division, remainder writes to the general purpose register:
GSMOD, GSDMOD, GSMODU, GSDMODU
Logical right shift:
PSLLW, PSLLH, PSRLH, PSRLW
Arithmetic right shift:
PSRAW
After register fs is negated, register ft is bitwise and:
PANDN
Unpack:
PUNPCKHHW, PUNPCKLBH, PUNPCKHBH
Low 32 bits combined into 64 bits:
PUNPCKLWD
High 32 bits combined into 64 bits:
PUNPCKHWD
Take word with offset:
GSLDX, GSLBX, GSLHX, GSLWX
Memory bytes with offset:
GSSDX, GSSBX, GSSHX, GSSWX
Dual source register stores words:
GSSQ, GSSQC1
Dual source register take words:
GSLQ
This patch must be committed after
https://bugs.kde.org/show_bug.cgi?id=429282
STEPS TO REPRODUCE
1. make and make install
2. gcc testcase.c -o testcase -g -march=loongson3a
3. run ./valgrind testcase
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
$ cat /proc/cpuinfo
system type : generic-loongson-machine
machine : loongson,generic
processor : 0
cpu model : ICT Loongson-3 V0.4 FPU V0.1
model name : Loongson-3A R4 (Loongson-3A4000)
CPU MHz : 1800.00
BogoMIPS : 3594.02
wait instruction : yes
microsecond timers : yes
tlb_entries : 2112
extra interrupt vector : yes
hardware watchpoint : yes, count: 0, address/irw mask: []
isa : mips1 mips2 mips3 mips4 mips5 mips32r1 mips32r2
mips64r1 mips64r2
For more instruction information view ：
http://www.loongson.cn/uploadfile/cpu/3A3000/Loongson3A3000_3B3000user2.pdf
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