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#include "BufferBuilder.h"
void *build_jit_object_coff(ObjectCode *oc)
{
struct BufferBuilder bb = buffer_builder_new(4096);
// COFF header
buffer_builder_uint16(bb, IMAGE_FILE_MACHINE_AMD64);
buffer_builder_uint16(bb, 1); // NumberOfSections
buffer_builder_uint32(bb, 0); // TimeDateStamp
uint32_t *ptr_to_symbol_table = buffer_builder_uint32(bb, 0); // PointerToSymbolTable
buffer_builder_uint32(bb, n_syms); // NumberOfSymbols
buffer_builder_uint16(bb, 0); // SizeOfOptionalHeader
buffer_builder_uint16(bb, 0); // Characteristics
// Sections
buffer_builder_push(bb, ".text\0\0\0", 8); // Name
buffer_builder_uint32(bb, sect_sz); // VirtualSize
buffer_builder_uint32(bb, sect_base); // VirtualAddress
buffer_builder_uint32(bb, 0); // SizeOfRawData
buffer_builder_uint32(bb, 0); // PointerToRawData
buffer_builder_uint32(bb, 0); // PointerToRelocations
buffer_builder_uint32(bb, 0); // PointerToLinenumbers
buffer_builder_uint16(bb, 0); // NumberOfRelocations
buffer_builder_uint16(bb, 0); // NumberOfLinenumbers
buffer_builder_uint32(bb, 0); // Characteristics
struct BufferBuilder strings = buffer_builder_new(4096);
for (int i=0; i < oc->n_symbols; i++) {
Symbol_t *sym = oc->symbols[i];
size_t offset = buffer_builder_filled_size(strings);
buffer_builder_push(strings, sym->name);
buffer_builder_uint32(bb, 0);
buffer_builder_uint32(bb, offset); // RawName index
buffer_builder_uint32(bb, value); // Value
buffer_builder_uint16(bb, 1); // SectionNumber
buffer_builder_uint8(bb, 0x20); // StorageClass
buffer_builder_uint8(bb, 0); // NumberOfAuxSymbols
}
buffer_builder_append(bb, strings);
return bb->start;
}
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