59 lines
2.7 KiB
Diff
59 lines
2.7 KiB
Diff
--- ./deps/v8/src/heap/base/asm/x64/push_registers_asm.cc 2021-09-10 22:55:12.000000000 +0530
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+++ ./deps/v8/src/heap/base/asm/x64/push_registers_asm.cc.mod 2021-09-12 16:03:58.444141027 +0530
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@@ -16,12 +16,15 @@
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// GN toolchain (e.g. ChromeOS) and not provide them.
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// _WIN64 Defined as 1 when the compilation target is 64-bit ARM or x64.
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// Otherwise, undefined.
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+
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+#if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_X64)
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#ifdef _WIN64
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// We maintain 16-byte alignment at calls. There is an 8-byte return address
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// on the stack and we push 232 bytes which maintains 16-byte stack alignment
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// at the call.
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// Source: https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention
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+
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asm(".globl PushAllRegistersAndIterateStack \n"
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"PushAllRegistersAndIterateStack: \n"
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// rbp is callee-saved. Maintain proper frame pointer for debugging.
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@@ -104,3 +107,39 @@
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" ret \n");
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#endif // !_WIN64
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+#else
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+asm(
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+#ifdef _WIN32
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+ ".globl _PushAllRegistersAndIterateStack \n"
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+ "_PushAllRegistersAndIterateStack: \n"
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+#else // !_WIN32
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+ ".globl PushAllRegistersAndIterateStack \n"
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+ ".type PushAllRegistersAndIterateStack, %function \n"
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+ ".hidden PushAllRegistersAndIterateStack \n"
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+ "PushAllRegistersAndIterateStack: \n"
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+#endif // !_WIN32
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+ // [ IterateStackCallback ]
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+ // [ StackVisitor* ]
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+ // [ Stack* ]
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+ // [ ret ]
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+ // ebp is callee-saved. Maintain proper frame pointer for debugging.
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+ " push %ebp \n"
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+ " movl %esp, %ebp \n"
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+ " push %ebx \n"
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+ " push %esi \n"
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+ " push %edi \n"
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+ // Save 3rd parameter (IterateStackCallback).
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+ " movl 28(%esp), %ecx \n"
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+ // Pass 3rd parameter as esp (stack pointer).
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+ " push %esp \n"
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+ // Pass 2nd parameter (StackVisitor*).
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+ " push 28(%esp) \n"
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+ // Pass 1st parameter (Stack*).
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+ " push 28(%esp) \n"
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+ " call *%ecx \n"
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+ // Pop the callee-saved registers.
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+ " addl $24, %esp \n"
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+ // Restore rbp as it was used as frame pointer.
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+ " pop %ebp \n"
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+ " ret \n");
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+#endif
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