80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
#include <inttypes.h>
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#include <libelfin/dwarf/dwarf++.hh>
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#include <libelfin/elf/elf++.hh>
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#include "libelfin_wrap.h"
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class LibelfinBinding
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{
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public:
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LibelfinBinding(int fd, uintptr_t _loadoffset)
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: elf(elf::create_mmap_loader(fd)),
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dwarf(dwarf::elf::create_loader(this->elf)),
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loadoffset(_loadoffset)
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{
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}
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elf::elf elf;
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dwarf::dwarf dwarf;
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uintptr_t loadoffset;
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};
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DEBUGUS_EXTERNC void libelfin_wrap_get_syms(PLibelfinBinding *pbind, Symbols *syms)
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{
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LibelfinBinding *bind = (LibelfinBinding *)pbind;
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for (auto §ion : bind->elf.sections()) {
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if (section.get_hdr().type == elf::sht::symtab) {
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for (auto sym : section.as_symtab()) {
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auto &d = sym.get_data();
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if (d.type() == elf::stt::func) {
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Symbol s = {
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.name = (const char *)malloc(strlen(sym.get_name().c_str())+1),
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.addr = bind->loadoffset + (uintptr_t)d.value,
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};
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strcpy((char*)s.name, sym.get_name().c_str());
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da_append(syms, s);
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}
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}
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}
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}
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}
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DEBUGUS_EXTERNC PLibelfinBinding libelfin_wrap_get_binding(int fd, uintptr_t loadoffset)
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{
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return (PLibelfinBinding)new LibelfinBinding(fd, loadoffset);
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}
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DEBUGUS_EXTERNC void libelfin_wrap_free_binding(PLibelfinBinding pbind)
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{
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delete (LibelfinBinding *)pbind;
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}
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DEBUGUS_EXTERNC AddrInfo *libelfin_wrap_info_from_rip(PLibelfinBinding pbind, uint64_t rip)
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{
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LibelfinBinding *bind = (LibelfinBinding *)pbind;
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for (auto &cu : bind->dwarf.compilation_units()) {
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if (die_pc_range(cu.root()).contains(rip)) {
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auto < = cu.get_line_table();
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auto it = lt.find_address(rip);
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if (it == lt.end()) {
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return NULL;
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} else {
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AddrInfo *ai = (AddrInfo *)malloc(sizeof(*ai));
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ai->addr = rip;
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ai->line = it->line;
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ai->file = (const char*)malloc(strlen(it->file->path.c_str())+1);
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strcpy((char*)ai->file, it->file->path.c_str());
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return ai;
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}
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}
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}
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return NULL;
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}
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DEBUGUS_EXTERNC void libelfin_wrap_free_info(AddrInfo *ai)
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{
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free((void*)ai->file);
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free((void*)ai);
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}
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