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yzewei 3f34d1e7e6 [INTERP] Honor MXCSR rounding mode in SSE/AVX operations (#4408) 
The interpreter implements a number of SSE and AVX instructions using
host floating-point operations, but did not apply the guest MXCSR.RC
before performing them. As a result, directed rounding modes could
produce results using the host's previous rounding mode.

Add mxcsr_setround() to save the host rounding mode and temporarily
apply the rounding mode selected by the guest MXCSR. Use it around the
affected SSE and AVX arithmetic, horizontal, dot-product, conversion,
and FMA interpreter paths, restoring the original host mode afterward.

Add an interpreter regression test covering all four MXCSR rounding
modes and representative scalar, packed, conversion, AVX, and FMA
instructions. Force the test through the interpreter so that a dynarec
path cannot hide interpreter rounding errors.

Signed-off-by: Zewei Yang <[email protected]>
2026-09-21 09:09:47 +08:00
..
misc
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
benchfloat
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
benchfloat_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
benchfloat.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
box64-bash
Now x86_64 bash can be installed as box64-bash and will be automaticly used if present
2024-10-18 14:53:13 +02:00
CMakeLists.txt
[INTERP] Honor MXCSR rounding mode in SSE/AVX operations (#4408)
2026-09-21 09:09:47 +08:00
ref01.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref02.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref03.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref04.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref05.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref06.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref07.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref08.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref09.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref10.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref11.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref12_android.txt
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
ref12.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref13.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref14.txt
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
ref15.txt
Attempts at conversion of va_list
2021-03-08 18:34:07 +01:00
ref16.txt
Improved test16
2024-12-02 17:01:08 +01:00
ref17_android.txt
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
ref17.txt
[ARM64_DYNAREC] Fixed (rarely used) some edge case for (V)PMULHRSW opcode (and improved tests)
2025-04-25 20:03:58 +02:00
ref18.txt
Added PCLMULQDQ ([DYNAREC] Too, using PMULL if present) extension (improve a lot AES-XTS score of Geekbench 5)
2022-09-30 19:13:47 +02:00
ref19.txt
Fixed the backtrace wrapper (uses eh_frame information only)
2022-02-14 13:13:12 +01:00
ref20.txt
Added support for R_X86_64_IRELATIVE reloc, along with a test for it (for #303)
2022-07-03 14:14:17 +02:00
ref21_alt.txt
Restored old test21, the CI doesn't seems to like the new one
2024-12-03 12:54:54 +01:00
ref21.txt
[TESTS] Improved test21
2025-12-14 14:13:13 +01:00
ref22_android.txt
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
ref22.txt
[INTERPRETER] Improved x87 emulation a bit ([ARM64_DYNAREC] too)
2025-01-08 14:43:14 +01:00
ref23.txt
[ARM64_DYNAREC] Fixed 0F 38 00 PSHUFB opcode (thanks @wannacu for the hint)
2023-09-04 09:29:55 +02:00
ref24.txt
[RV64_DYNAREC] Added more support for XTheadBb extension (#989)
2023-09-24 22:20:21 +02:00
ref25.txt
[DYNAREC] Fix x87cache issues (#1025)
2023-10-14 18:49:30 +02:00
ref26.txt
[INTERP] Fix fpu_round (#1030)
2023-10-25 14:14:11 +02:00
ref27.txt
[ARM64_DYNAREC] Some fixes to pcmp[ei]strm opcodes
2024-04-28 22:16:29 +02:00
ref28.txt
Added full support for the SHA cpu extension
2023-11-21 18:00:58 +01:00
ref29.txt
[ARM64_DYNAREC] More work on LOCK prefixed opcodes (Atomic still disabled)
2023-12-03 18:26:11 +01:00
ref30.txt
[ARM64_DYNAREC] Fixed (rarely used) some edge case for (V)PMULHRSW opcode (and improved tests)
2025-04-25 20:03:58 +02:00
ref31.txt
Port rounding of some x87 instructions from Box86 (#2242)
2025-01-08 15:34:15 +01:00
ref32.txt
[DYNAREC] Added a x87pc test and some cosmetic changes too (#2561)
2025-04-22 13:31:04 +02:00
ref33.txt
[BOX64][INTERP] Fixed idiv boundary tests (#3283)
2025-12-16 12:11:21 +01:00
ref34.txt
[CMAKE] Cleanup ctest (#3981)
2026-06-23 19:06:34 +02:00
ref35.txt
[CMAKE] Cleanup ctest (#3981)
2026-06-23 19:06:34 +02:00
ref36.txt
[INTERP] Honor MXCSR rounding mode in SSE/AVX operations (#4408)
2026-09-21 09:09:47 +08:00
roundtest.h
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test01
[ELFLOADER] Huge refactor of elfloader and symbol resolution. Some more cleaning need to be done, but that's a first step (should help #422, #360, #1046 and probably others)
2024-02-15 18:11:57 +01:00
test01_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test01-x64.AppImage
Changed AppImage test for a much simpler one
2026-03-06 17:59:18 +01:00
test01.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test02
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test02_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test02.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test03
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test03_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test03.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test04
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test04_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test04.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test05
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test05_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test05.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test06
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test06_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test06.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test07
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test07_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test07.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test08
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test08_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test08.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test09
[TESTS] Make test09 deterministic (#698)
2023-04-13 20:00:56 +02:00
test09_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test09.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test10
Update test10 (it was a bit flaky), update libstdc++ binary, and added fake __libc_single_threadedhandling
2022-03-31 11:01:15 +02:00
test10_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test10.cpp
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test11
[TLS] Kept x86 TCB self consistent with pthread_self() (#4112)
2026-07-24 20:51:14 +02:00
test11_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test11.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test12
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test12_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test12.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test13
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test13.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test14
Added x86_64 tests (based on box86)
2021-02-28 13:19:23 +01:00
test14_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test14.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test15
Attempts at conversion of va_list
2021-03-08 18:34:07 +01:00
test15_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test15.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test16
Improved test16
2024-12-02 17:01:08 +01:00
test16_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test16.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test17
[ARM64_DYNAREC] Fixed (rarely used) some edge case for (V)PMULHRSW opcode (and improved tests)
2025-04-25 20:03:58 +02:00
test17_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test17.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test18
Added PCLMULQDQ ([DYNAREC] Too, using PMULL if present) extension (improve a lot AES-XTS score of Geekbench 5)
2022-09-30 19:13:47 +02:00
test18_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test18.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test19
Imrpoved a bit backtrace again
2023-02-18 08:44:54 +01:00
test19.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test20
Added support for R_X86_64_IRELATIVE reloc, along with a test for it (for #303)
2022-07-03 14:14:17 +02:00
test20_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test20.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test21
[TESTS] Improved test21
2025-12-14 14:13:13 +01:00
test21_alt
Restored old test21, the CI doesn't seems to like the new one
2024-12-03 12:54:54 +01:00
test21_alt.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test21_android
[ANDROID] Updaed test21 for Android build
2024-12-04 18:27:24 +01:00
test21_android.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test21.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test22
[INTERPRETER] Improved x87 emulation a bit ([ARM64_DYNAREC] too)
2025-01-08 14:43:14 +01:00
test22_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test22.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test23
[ARM64_DYNAREC] Fixed 0F 38 00 PSHUFB opcode (thanks @wannacu for the hint)
2023-09-04 09:29:55 +02:00
test23_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test23.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test24
[RV64_DYNAREC] Added more support for XTheadBb extension (#989)
2023-09-24 22:20:21 +02:00
test24_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test24.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test25
[DYNAREC] Fix x87cache issues (#1025)
2023-10-14 18:49:30 +02:00
test25_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test25.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test26
[INTERP] Fix fpu_round (#1030)
2023-10-25 14:14:11 +02:00
test26_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test26.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test27
[ARM64_DYNAREC] Some fixes to pcmp[ei]strm opcodes
2024-04-28 22:16:29 +02:00
test27_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test27.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test28
Added full support for the SHA cpu extension
2023-11-21 18:00:58 +01:00
test28_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test28.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test29
[ARM64_DYNAREC] More work on LOCK prefixed opcodes (Atomic still disabled)
2023-12-03 18:26:11 +01:00
test29_android
[CI] Add Android Tests (#1263)
2024-02-14 09:14:01 +01:00
test29.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test30
[ARM64_DYNAREC] Fixed (rarely used) some edge case for (V)PMULHRSW opcode (and improved tests)
2025-04-25 20:03:58 +02:00
test30.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test31
Port rounding of some x87 instructions from Box86 (#2242)
2025-01-08 15:34:15 +01:00
test31.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test32
[DYNAREC] Added a x87pc test and some cosmetic changes too (#2561)
2025-04-22 13:31:04 +02:00
test32.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test33
[BOX64][INTERP] Fixed idiv boundary tests (#3283)
2025-12-16 12:11:21 +01:00
test33.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test34
[CMAKE] Cleanup ctest (#3981)
2026-06-23 19:06:34 +02:00
test34_android
[CMAKE] Cleanup ctest (#3981)
2026-06-23 19:06:34 +02:00
test34.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test35
[CMAKE] Cleanup ctest (#3981)
2026-06-23 19:06:34 +02:00
test35.c
[CORE] Add MIT license header to all relevant source files (#4287)
2026-08-31 19:50:21 +02:00
test36
[INTERP] Honor MXCSR rounding mode in SSE/AVX operations (#4408)
2026-09-21 09:09:47 +08:00
test36.c
[INTERP] Honor MXCSR rounding mode in SSE/AVX operations (#4408)
2026-09-21 09:09:47 +08:00