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| author | Yang Liu <liuyang22@iscas.ac.cn> | 2024-11-20 02:59:43 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-11-19 19:59:43 +0100 |
| commit | 81e4e26dc51b85720fbc3ba2ffe68030e5d227fa (patch) | |
| tree | cc6b62f68664f88fafccad7517a463ea55b56735 /docs | |
| parent | 4f6a66f9c60f20c97059215d076effc3c9fafd7f (diff) | |
| download | box64-81e4e26dc51b85720fbc3ba2ffe68030e5d227fa.tar.gz box64-81e4e26dc51b85720fbc3ba2ffe68030e5d227fa.zip | |
[ARM64_DYNAREC] Re-enable weakbarrier for dmb.ishst (#2048)
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/USAGE.md | 11 | ||||
| -rw-r--r-- | docs/box64.pod | 12 |
2 files changed, 18 insertions, 5 deletions
diff --git a/docs/USAGE.md b/docs/USAGE.md index 379d82dd..eb94ff18 100644 --- a/docs/USAGE.md +++ b/docs/USAGE.md @@ -169,9 +169,14 @@ Define Box64's Dynarec max allowed forward value when building Block. #### BOX64_DYNAREC_STRONGMEM * Enable/Disable simulation of Strong Memory model * 0 : Don't try anything special (Default.) -* 1 : Enable some Memory Barrier when writting to memory (on some MOV opcode) to simulate Strong Memory Model while trying to limit performance impact (Default when libmonobdwgc-2.0.so is loaded) -* 2 : All 1. plus a memory barrier on every write to memory using MOV -* 3 : All 2. plus Memory Barrier when reading from memory and on some SSE/SSE2 opcodes too +* 1 : Enable some memory barriers when writting to memory to simulate the Strong Memory Model in a limited way (Default when libmonobdwgc-2.0.so is loaded) +* 2 : All 1. plus memory barriers on SIMD instructions +* 3 : All 2. plus more memory barriers on a regular basis + +#### BOX64_DYNAREC_WEAKBARRIER * +Use weak memory barriers to reduce the performance impact by STRONGMEM +* 0 : Use regular safe barrier (Default.) +* 1 : Use weak barriers to have more performance boost #### BOX64_DYNAREC_X87DOUBLE * Force the use of Double for x87 emulation diff --git a/docs/box64.pod b/docs/box64.pod index 478e602f..d0d192c0 100644 --- a/docs/box64.pod +++ b/docs/box64.pod @@ -296,8 +296,16 @@ Define Box64's Dynarec max allowed forward value when building Block. Enable/Disable simulation of Strong Memory model * 0 : Don't try anything special (Default.) - * 1 : Enable some Memory Barrier when reading from memory (on some MOV opcode) to simulate Strong Memory Model while trying to limit performance impact (Default when libmonobdwgc-2.0.so is loaded) - * 2 : Enable some Memory Barrier when reading from memory (on some MOV opcode) to simulate Strong Memory Model + * 1 : Enable some memory barriers when writting to memory to simulate the Strong Memory Model in a limited way (Default when libmonobdwgc-2.0.so is loaded) + * 2 : All 1. plus memory barriers on SIMD instructions + * 3 : All 2. plus more memory barriers on a regular basis + +=item B<BOX64_DYNAREC_WEAKBARRIER>=I<0|1> + +Use weak memory barriers to reduce the performance impact by STRONGMEM + + * 0 : Use regular safe barrier (Default.) + * 1 : Use weak barriers to have more performance boost =item B<BOX64_DYNAREC_X87DOUBLE>=I<0|1> |