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https://github.com/boykopovar/AnyPS5.git
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DotDebianandClaude Opus 5.5
7fd0890320
Returns 1 when the address lies in an executable PT_LOAD segment of the given dl_phdr_info, following FreeBSD lib/libc/gen/elf_utils.c (9.x and 11.x branches). The stub parameters become (dl_phdr_info*, void*) to match the FreeBSD declaration; a null dl_phdr_info throws. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
#include "prx/libc/include/general/VabiMacros.hpp"
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#include "prx/libc/include/specifics/linux/ElfTypes.hpp"
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#include <array>
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#include <cstdint>
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#include <cstdlib>
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extern "C" {
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int APS5_VABI __elf_phdr_match_addr_nid_postfix(dl_phdr_info*, void*);
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}
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static void Require(bool condition) {
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if (!condition) std::abort();
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}
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static void* Address(std::uintptr_t value) {
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return reinterpret_cast<void*>(value);
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}
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int main() {
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const std::array<Elf64_Phdr, 4> headers{{
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{PT_LOAD, PF_W, 0, 0x1000, 0, 0x1000, 0x1000, 0x1000},
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{PT_GNU_EH_FRAME, PF_X, 0, 0x2000, 0, 0x1000, 0x1000, 4},
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{PT_LOAD, PF_X, 0, 0x3000, 0, 0x1000, 0x1000, 0x1000},
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{PT_LOAD, PF_X | PF_W, 0, 0x8000, 0, 0x100, 0x100, 0x1000},
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}};
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dl_phdr_info info{0x400000, "guest", headers.data(), static_cast<std::uint16_t>(headers.size())};
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x403800)) == 1);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x401800)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x402800)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x403000)) == 1);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x402fff)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x404000 - 9)) == 1);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x404000 - 8)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x404000)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x400800)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x3800)) == 0);
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x408010)) == 1);
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info.dlpi_phnum = 0;
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Require(__elf_phdr_match_addr_nid_postfix(&info, Address(0x403800)) == 0);
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}
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