remove twn_elf

CMakeLists.txt

@@ -67,7 +67,6 @@ add_subdirectory(third-party/libxm ${CMAKE_CURRENT_BINARY_DIR}/third-party/libxm
 
 if(LINUX)
         set(SYSTEM_SOURCE_FILES
-                src/system/linux/twn_elf.c
                 src/system/linux/twn_timer.c
                 $<$<BOOL:${TWN_FEATURE_DYNLIB_GAME}>:src/game_object/twn_linux_game_object.c>)
 elseif(WIN32)

src/system/linux/twn_elf.c

@@ -1,93 +0,0 @@
-#include "twn_elf.h"
-#include "twn_game_object_c.h"
-#include "twn_engine_context_c.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/auxv.h>
-#include <elf.h>
-#include <linux/limits.h>
-#include <dlfcn.h>
-
-#include <SDL2/SDL.h>
-
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-bool infer_elf_section_bounds(const char *const restrict name,
-                              const char **restrict vm_start,
-                              const char **restrict vm_end)
-{
-    bool result = false;
-    char buf[PATH_MAX];
-    bool from_shared_object;
-    Dl_info info;
-
-    if (!dladdr(game_object_get_game_tick_address(), &info)) {
-        /* statically linked */
-        from_shared_object = false;
-        ssize_t l = readlink("/proc/self/exe", buf, PATH_MAX);
-        if (l == -1)
-            goto ERR_CANT_READLINK;
-        buf[l] = 0; /* readlink() doesn't write a terminator */
-    } else {
-        /* dynamically linked */
-        from_shared_object = true;
-        if (SDL_snprintf(buf, sizeof buf, "%s%s", ctx.base_dir, "libgame.so") < 0)
-            goto ERR_CANT_APPEND_BASE_PATH;
-    }
-
-    int elf = open(buf, O_RDONLY);
-    if (elf == -1)
-        goto ERR_CANT_OPEN_SELF;
-
-    /* elf header */
-    Elf64_Ehdr ehdr;
-    read(elf, &ehdr, sizeof ehdr);
-    if (ehdr.e_ident[EI_MAG0] != ELFMAG0 ||
-            ehdr.e_ident[EI_MAG1] != ELFMAG1 ||
-            ehdr.e_ident[EI_MAG2] != ELFMAG2 ||
-            ehdr.e_ident[EI_MAG3] != ELFMAG3)
-        goto ERR_NOT_ELF;
-
-    /* section header string table */
-    Elf64_Shdr shstrdr;
-    lseek(elf, ehdr.e_shoff + ehdr.e_shstrndx * sizeof (Elf64_Shdr), SEEK_SET);
-    read(elf, &shstrdr, sizeof shstrdr);
-    char *sh = malloc(shstrdr.sh_size);
-    lseek(elf, shstrdr.sh_offset, SEEK_SET);
-    read(elf, sh, shstrdr.sh_size);
-
-    /* walk sections searching for needed name */
-    lseek(elf, ehdr.e_shoff, SEEK_SET);
-    for (size_t s = 0; s < ehdr.e_shnum; ++s) {
-        Elf64_Shdr shdr;
-        read(elf, &shdr, sizeof shdr);
-
-        if (strcmp(&sh[shdr.sh_name], name) == 0) {
-            result = true;
-
-            if (!from_shared_object) {
-                *vm_start = getauxval(AT_ENTRY) - ehdr.e_entry + (char *)shdr.sh_addr;
-                *vm_end   = getauxval(AT_ENTRY) - ehdr.e_entry + (char *)shdr.sh_addr + shdr.sh_size;
-            } else {
-                *vm_start = (uintptr_t)info.dli_fbase + (char *)shdr.sh_addr;
-                *vm_end   = (uintptr_t)info.dli_fbase + (char *)shdr.sh_addr + shdr.sh_size;
-            }
-
-            break;
-        }
-    }
-
-    free(sh);
-
-ERR_NOT_ELF:
-    close(elf);
-
-ERR_CANT_OPEN_SELF:
-ERR_CANT_APPEND_BASE_PATH:
-ERR_CANT_READLINK:
-    return result;
-}

src/system/linux/twn_elf.h

@@ -1,10 +0,0 @@
-#ifndef TWN_ELF_H
-#define TWN_ELF_H
-
-#include <stdbool.h>
-
-bool infer_elf_section_bounds(const char *restrict name,
-                              const char **restrict vm_start,
-                              const char **restrict vm_end);
-
-#endif