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Making functions naked for now, as it makes life way easier.

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This commit is contained in:
Ben Vanik
2014-01-02 23:53:18 -08:00
parent 99c200fda5
commit 2468645bf2
2 changed files with 19 additions and 7 deletions
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12
src/alloy/backend/x64/x64_code_cache.cc
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@@ -213,12 +213,17 @@ void X64CodeChunk::AddTableEntry(uint8_t* code, size_t code_size) {
size_t unwind_info_offset = offset;
offset += UNWIND_INFO_SIZE;
// TODO(benvanik): take as parameters?
bool has_prolog = false;
uint8_t prolog_size = 4;
uint8_t stack_bytes = 16;
// http://msdn.microsoft.com/en-us/library/ddssxxy8.aspx
UNWIND_INFO* unwind_info = (UNWIND_INFO*)(buffer + unwind_info_offset);
unwind_info->Version = 1;
unwind_info->Flags = 0;
unwind_info->SizeOfProlog = 4;
unwind_info->CountOfCodes = 1;
unwind_info->SizeOfProlog = has_prolog ? prolog_size : 0;
unwind_info->CountOfCodes = has_prolog ? 1 : 0;
unwind_info->FrameRegister = 0;
unwind_info->FrameOffset = 0;
@@ -226,7 +231,8 @@ void X64CodeChunk::AddTableEntry(uint8_t* code, size_t code_size) {
auto& code_0 = unwind_info->UnwindCode[0];
code_0.CodeOffset = 4; // end of instruction + 1 == offset of next instruction
code_0.UnwindOp = UWOP_ALLOC_SMALL;
code_0.OpInfo = 16;
code_0.OpInfo = stack_bytes;
XEASSERT(stack_bytes < 128);
// Add entry.
auto& fn_entry = fn_table[fn_table_count++];