belka/elna
1
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

Implement division

Browse Source
This commit is contained in:
Eugen Wissner
2024-03-09 08:36:07 +01:00
parent fe805ca893
commit a3e3be5ec7
25 changed files with 357 additions and 245 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
backend/target.cpp
View File

@ -2,15 +2,15 @@
#include "elna/backend/riscv.hpp"
#include <elfio/elfio.hpp>
namespace elna::backend
namespace elna::riscv
{
void riscv32_elf(source::block *ast, const std::filesystem::path& out_file)
{
auto visitor = std::make_unique<RiscVVisitor>();
visitor->visit(ast);
auto _visitor = std::make_unique<visitor>();
_visitor->visit(ast);
ELFIO::elfio writer;
const ELFIO::Elf_Word instructions_size = visitor->instructions.size() * sizeof(Instruction);
const ELFIO::Elf_Word instructions_size = _visitor->instructions.size() * sizeof(instruction);
writer.create(ELFIO::ELFCLASS32, ELFIO::ELFDATA2LSB);
@ -23,7 +23,7 @@ namespace elna::backend
text_sec->set_type(ELFIO::SHT_PROGBITS);
text_sec->set_flags(ELFIO::SHF_ALLOC | ELFIO::SHF_EXECINSTR);
text_sec->set_addr_align(0x1);
text_sec->set_data(reinterpret_cast<const char *>(visitor->instructions.data()),
text_sec->set_data(reinterpret_cast<const char *>(_visitor->instructions.data()),
instructions_size);
// Create string table section
@ -71,12 +71,12 @@ namespace elna::backend
// Create relocation table writer
ELFIO::relocation_section_accessor rela(writer, rel_sec);
// Add relocation entry (adjust address at offset 11)
rela.add_entry(visitor->references[0].offset, label_sym, 26 /* ELFIO::R_RISCV_HI20 */);
rela.add_entry(visitor->references[0].offset, label_sym, 51 /* ELFIO::R_RISCV_RELAX */);
rela.add_entry(visitor->references[1].offset, label_sym, 27 /* ELFIO::R_RISCV_LO12_I */);
rela.add_entry(visitor->references[1].offset, label_sym, 51 /* ELFIO::R_RISCV_RELAX */);
rela.add_entry(visitor->references[2].offset, printf_sym, 18 /* ELFIO::R_RISCV_CALL */);
rela.add_entry(visitor->references[2].offset, printf_sym, 51 /* ELFIO::R_RISCV_RELAX */);
rela.add_entry(_visitor->references[0].offset, label_sym, 26 /* ELFIO::R_RISCV_HI20 */);
rela.add_entry(_visitor->references[0].offset, label_sym, 51 /* ELFIO::R_RISCV_RELAX */);
rela.add_entry(_visitor->references[1].offset, label_sym, 27 /* ELFIO::R_RISCV_LO12_I */);
rela.add_entry(_visitor->references[1].offset, label_sym, 51 /* ELFIO::R_RISCV_RELAX */);
rela.add_entry(_visitor->references[2].offset, printf_sym, 18 /* ELFIO::R_RISCV_CALL */);
rela.add_entry(_visitor->references[2].offset, printf_sym, 51 /* ELFIO::R_RISCV_RELAX */);
// Create ELF object file
writer.save(out_file);