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https://github.com/openwrt/video.git
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Daniel Golle
df0b899123
Update WPEWebKit to the 2.52 stable major release branch. Includes a pending patchset to get WASM BBQJIT working on RISCV64, upstream PR https://github.com/WebKit/WebKit/pull/65621 Alltogether this brings acceptable performance (even with LLVMPipe Mesa software renderer) on RISCV64. Link: https://wpewebkit.org/release/wpewebkit-2.52.0.html Link: https://wpewebkit.org/release/wpewebkit-2.52.1.html Link: https://wpewebkit.org/release/wpewebkit-2.52.2.html Link: https://wpewebkit.org/release/wpewebkit-2.52.3.html Signed-off-by: Daniel Golle <daniel@makrotopia.org>
34 lines
1.5 KiB
Diff
34 lines
1.5 KiB
Diff
--- a/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
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+++ b/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
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@@ -520,13 +520,30 @@ WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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// the jsc_llint_begin and jsc_llint_end labels help lldb_webkit.py find the
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// start and end of the llint instruction range quickly.
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+// On RISC-V, the linker (mold) relaxes `auipc + jalr/addi` pairs into single
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+// `j`/`addi`-via-gp instructions, shrinking IPInt opcode handlers by 4 bytes
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+// each. The `.balignw 256` padding that follows each handler is not recomputed
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+// after relaxation, so consecutive `ipint_*_validate` labels end up 252 bytes
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+// apart instead of 256, and `IPInt::initialize()`'s `VALIDATE_IPINT_OPCODE`
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+// asserts fire. Suppress relaxation across the entire LLInt asm to keep all
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+// 256-byte-aligned dispatch slots intact.
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+#if CPU(RISCV64)
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+#define OFFLINE_ASM_BEGIN_OPTIONS ".option push\n.option norelax\n"
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+#define OFFLINE_ASM_END_OPTIONS ".option pop\n"
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+#else
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+#define OFFLINE_ASM_BEGIN_OPTIONS ""
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+#define OFFLINE_ASM_END_OPTIONS ""
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+#endif
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+
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#define OFFLINE_ASM_BEGIN __asm__( \
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+ OFFLINE_ASM_BEGIN_OPTIONS \
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OFFLINE_ASM_GLOBAL_LABEL_IMPL(jsc_llint_begin, OFFLINE_ASM_NO_ALT_ENTRY_DIRECTIVE, OFFLINE_ASM_ALIGN4B, HIDE_SYMBOL) \
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OFFLINE_ASM_BEGIN_SPACER
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#define OFFLINE_ASM_END \
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OFFLINE_ASM_BEGIN_SPACER \
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OFFLINE_ASM_GLOBAL_LABEL_IMPL(jsc_llint_end, OFFLINE_ASM_NO_ALT_ENTRY_DIRECTIVE, OFFLINE_ASM_ALIGN4B, HIDE_SYMBOL) \
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+ OFFLINE_ASM_END_OPTIONS \
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);
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#if ENABLE(LLINT_EMBEDDED_OPCODE_ID)
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