66 lines
2.3 KiB
Diff
66 lines
2.3 KiB
Diff
--- Source/JavaScriptCore/heap/MachineStackMarker.cppg 2019-01-12 19:48:12.801137040 +0100
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+++ Source/JavaScriptCore/heap/MachineStackMarker.cpp 2019-01-12 20:09:03.662201571 +0100
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@@ -681,7 +681,19 @@
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#endif
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#else
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-#error Need a way to get the frame pointer for another thread on this platform
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+
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+// The following sequence depends on musl libc's sys/ucontext.h.
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+#if CPU(X86)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_EBP]);
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+#elif CPU(X86_64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_RBP]);
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+#elif CPU(ARM)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.arm_fp);
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+#elif CPU(ARM64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.regs[29]);
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+#elif CPU(MIPS)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[30]);
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+#endif
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#endif
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}
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@@ -761,7 +773,19 @@
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#endif
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#else
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-#error Need a way to get the instruction pointer for another thread on this platform
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+
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+// The following sequence depends on musl libc's sys/ucontext.h.
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+#if CPU(X86)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_EIP]);
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+#elif CPU(X86_64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_RIP]);
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+#elif CPU(ARM)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.arm_pc);
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+#elif CPU(ARM64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.pc);
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+#elif CPU(MIPS)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.pc);
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+#endif
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#endif
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}
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void* MachineThreads::Thread::Registers::llintPC() const
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@@ -850,7 +874,19 @@
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#endif
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#else
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-#error Need a way to get the LLIntPC for another thread on this platform
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+
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+// The following sequence depends on musl libc's sys/ucontext.h.
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+#if CPU(X86)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_ESI]);
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+#elif CPU(X86_64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_R8]);
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+#elif CPU(ARM)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.arm_r8);
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+#elif CPU(ARM64)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.regs[4]);
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+#elif CPU(MIPS)
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+ return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[12]);
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+#endif
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#endif
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}
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#endif // ENABLE(SAMPLING_PROFILER)
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