diff options
| author | 2014-06-16 23:05:10 -0400 | |
|---|---|---|
| committer | 2014-06-16 23:43:32 -0400 | |
| commit | 1da361c7ab55e1dbe6709a738e228bfab5a5bb78 (patch) | |
| tree | 487be34416c624106a01edf8b075866fb2cb9d33 /src/core/loader | |
| parent | Loader: Added support for booting NCCH executables. (diff) | |
| download | yuzu-1da361c7ab55e1dbe6709a738e228bfab5a5bb78.tar.gz yuzu-1da361c7ab55e1dbe6709a738e228bfab5a5bb78.tar.xz yuzu-1da361c7ab55e1dbe6709a738e228bfab5a5bb78.zip | |
Elf: Renamed modules to be consistent with new loader naming, fixed tabs -> spaces.
Diffstat (limited to 'src/core/loader')
| -rw-r--r-- | src/core/loader/elf.cpp | 190 | ||||
| -rw-r--r-- | src/core/loader/elf.h (renamed from src/core/loader/elf_types.h) | 232 | ||||
| -rw-r--r-- | src/core/loader/elf_reader.cpp | 190 | ||||
| -rw-r--r-- | src/core/loader/elf_reader.h | 75 | ||||
| -rw-r--r-- | src/core/loader/loader.cpp | 2 |
5 files changed, 332 insertions, 357 deletions
diff --git a/src/core/loader/elf.cpp b/src/core/loader/elf.cpp new file mode 100644 index 000000000..153c30f51 --- /dev/null +++ b/src/core/loader/elf.cpp | |||
| @@ -0,0 +1,190 @@ | |||
| 1 | // Copyright 2013 Dolphin Emulator Project | ||
| 2 | // Licensed under GPLv2 | ||
| 3 | // Refer to the license.txt file included. | ||
| 4 | |||
| 5 | #include <string> | ||
| 6 | |||
| 7 | #include "common/common.h" | ||
| 8 | |||
| 9 | #include "common/symbols.h" | ||
| 10 | #include "core/mem_map.h" | ||
| 11 | #include "core/loader/elf.h" | ||
| 12 | |||
| 13 | //void bswap(Elf32_Word &w) {w = Common::swap32(w);} | ||
| 14 | //void bswap(Elf32_Half &w) {w = Common::swap16(w);} | ||
| 15 | |||
| 16 | #define bswap(w) w // Dirty bswap disable for now... 3DS is little endian, anyway | ||
| 17 | |||
| 18 | static void byteswapHeader(Elf32_Ehdr &ELF_H) | ||
| 19 | { | ||
| 20 | bswap(ELF_H.e_type); | ||
| 21 | bswap(ELF_H.e_machine); | ||
| 22 | bswap(ELF_H.e_ehsize); | ||
| 23 | bswap(ELF_H.e_phentsize); | ||
| 24 | bswap(ELF_H.e_phnum); | ||
| 25 | bswap(ELF_H.e_shentsize); | ||
| 26 | bswap(ELF_H.e_shnum); | ||
| 27 | bswap(ELF_H.e_shstrndx); | ||
| 28 | bswap(ELF_H.e_version); | ||
| 29 | bswap(ELF_H.e_entry); | ||
| 30 | bswap(ELF_H.e_phoff); | ||
| 31 | bswap(ELF_H.e_shoff); | ||
| 32 | bswap(ELF_H.e_flags); | ||
| 33 | } | ||
| 34 | |||
| 35 | static void byteswapSegment(Elf32_Phdr &sec) | ||
| 36 | { | ||
| 37 | bswap(sec.p_align); | ||
| 38 | bswap(sec.p_filesz); | ||
| 39 | bswap(sec.p_flags); | ||
| 40 | bswap(sec.p_memsz); | ||
| 41 | bswap(sec.p_offset); | ||
| 42 | bswap(sec.p_paddr); | ||
| 43 | bswap(sec.p_vaddr); | ||
| 44 | bswap(sec.p_type); | ||
| 45 | } | ||
| 46 | |||
| 47 | static void byteswapSection(Elf32_Shdr &sec) | ||
| 48 | { | ||
| 49 | bswap(sec.sh_addr); | ||
| 50 | bswap(sec.sh_addralign); | ||
| 51 | bswap(sec.sh_entsize); | ||
| 52 | bswap(sec.sh_flags); | ||
| 53 | bswap(sec.sh_info); | ||
| 54 | bswap(sec.sh_link); | ||
| 55 | bswap(sec.sh_name); | ||
| 56 | bswap(sec.sh_offset); | ||
| 57 | bswap(sec.sh_size); | ||
| 58 | bswap(sec.sh_type); | ||
| 59 | } | ||
| 60 | |||
| 61 | ElfReader::ElfReader(void *ptr) | ||
| 62 | { | ||
| 63 | base = (char*)ptr; | ||
| 64 | base32 = (u32 *)ptr; | ||
| 65 | header = (Elf32_Ehdr*)ptr; | ||
| 66 | byteswapHeader(*header); | ||
| 67 | |||
| 68 | segments = (Elf32_Phdr *)(base + header->e_phoff); | ||
| 69 | sections = (Elf32_Shdr *)(base + header->e_shoff); | ||
| 70 | |||
| 71 | entryPoint = header->e_entry; | ||
| 72 | |||
| 73 | LoadSymbols(); | ||
| 74 | } | ||
| 75 | |||
| 76 | const char *ElfReader::GetSectionName(int section) const | ||
| 77 | { | ||
| 78 | if (sections[section].sh_type == SHT_NULL) | ||
| 79 | return nullptr; | ||
| 80 | |||
| 81 | int nameOffset = sections[section].sh_name; | ||
| 82 | char *ptr = (char*)GetSectionDataPtr(header->e_shstrndx); | ||
| 83 | |||
| 84 | if (ptr) | ||
| 85 | return ptr + nameOffset; | ||
| 86 | else | ||
| 87 | return nullptr; | ||
| 88 | } | ||
| 89 | |||
| 90 | bool ElfReader::LoadInto(u32 vaddr) | ||
| 91 | { | ||
| 92 | DEBUG_LOG(MASTER_LOG, "String section: %i", header->e_shstrndx); | ||
| 93 | |||
| 94 | // Should we relocate? | ||
| 95 | bRelocate = (header->e_type != ET_EXEC); | ||
| 96 | |||
| 97 | if (bRelocate) | ||
| 98 | { | ||
| 99 | DEBUG_LOG(MASTER_LOG, "Relocatable module"); | ||
| 100 | entryPoint += vaddr; | ||
| 101 | } | ||
| 102 | else | ||
| 103 | { | ||
| 104 | DEBUG_LOG(MASTER_LOG, "Prerelocated executable"); | ||
| 105 | } | ||
| 106 | |||
| 107 | INFO_LOG(MASTER_LOG, "%i segments:", header->e_phnum); | ||
| 108 | |||
| 109 | // First pass : Get the bits into RAM | ||
| 110 | u32 segmentVAddr[32]; | ||
| 111 | |||
| 112 | u32 baseAddress = bRelocate ? vaddr : 0; | ||
| 113 | |||
| 114 | for (int i = 0; i < header->e_phnum; i++) | ||
| 115 | { | ||
| 116 | Elf32_Phdr *p = segments + i; | ||
| 117 | |||
| 118 | INFO_LOG(MASTER_LOG, "Type: %i Vaddr: %08x Filesz: %i Memsz: %i ", p->p_type, p->p_vaddr, p->p_filesz, p->p_memsz); | ||
| 119 | |||
| 120 | if (p->p_type == PT_LOAD) | ||
| 121 | { | ||
| 122 | segmentVAddr[i] = baseAddress + p->p_vaddr; | ||
| 123 | u32 writeAddr = segmentVAddr[i]; | ||
| 124 | |||
| 125 | const u8 *src = GetSegmentPtr(i); | ||
| 126 | u8 *dst = Memory::GetPointer(writeAddr); | ||
| 127 | u32 srcSize = p->p_filesz; | ||
| 128 | u32 dstSize = p->p_memsz; | ||
| 129 | u32 *s = (u32*)src; | ||
| 130 | u32 *d = (u32*)dst; | ||
| 131 | for (int j = 0; j < (int)(srcSize + 3) / 4; j++) | ||
| 132 | { | ||
| 133 | *d++ = /*_byteswap_ulong*/(*s++); | ||
| 134 | } | ||
| 135 | if (srcSize < dstSize) | ||
| 136 | { | ||
| 137 | //memset(dst + srcSize, 0, dstSize-srcSize); //zero out bss | ||
| 138 | } | ||
| 139 | INFO_LOG(MASTER_LOG, "Loadable Segment Copied to %08x, size %08x", writeAddr, p->p_memsz); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | |||
| 143 | |||
| 144 | INFO_LOG(MASTER_LOG, "Done loading."); | ||
| 145 | return true; | ||
| 146 | } | ||
| 147 | |||
| 148 | SectionID ElfReader::GetSectionByName(const char *name, int firstSection) const | ||
| 149 | { | ||
| 150 | for (int i = firstSection; i < header->e_shnum; i++) | ||
| 151 | { | ||
| 152 | const char *secname = GetSectionName(i); | ||
| 153 | |||
| 154 | if (secname != nullptr && strcmp(name, secname) == 0) | ||
| 155 | return i; | ||
| 156 | } | ||
| 157 | return -1; | ||
| 158 | } | ||
| 159 | |||
| 160 | bool ElfReader::LoadSymbols() | ||
| 161 | { | ||
| 162 | bool hasSymbols = false; | ||
| 163 | SectionID sec = GetSectionByName(".symtab"); | ||
| 164 | if (sec != -1) | ||
| 165 | { | ||
| 166 | int stringSection = sections[sec].sh_link; | ||
| 167 | const char *stringBase = (const char *)GetSectionDataPtr(stringSection); | ||
| 168 | |||
| 169 | //We have a symbol table! | ||
| 170 | Elf32_Sym *symtab = (Elf32_Sym *)(GetSectionDataPtr(sec)); | ||
| 171 | int numSymbols = sections[sec].sh_size / sizeof(Elf32_Sym); | ||
| 172 | for (int sym = 0; sym < numSymbols; sym++) | ||
| 173 | { | ||
| 174 | int size = symtab[sym].st_size; | ||
| 175 | if (size == 0) | ||
| 176 | continue; | ||
| 177 | |||
| 178 | // int bind = symtab[sym].st_info >> 4; | ||
| 179 | int type = symtab[sym].st_info & 0xF; | ||
| 180 | |||
| 181 | const char *name = stringBase + symtab[sym].st_name; | ||
| 182 | |||
| 183 | Symbols::Add(symtab[sym].st_value, name, size, type); | ||
| 184 | |||
| 185 | hasSymbols = true; | ||
| 186 | } | ||
| 187 | } | ||
| 188 | |||
| 189 | return hasSymbols; | ||
| 190 | } | ||
diff --git a/src/core/loader/elf_types.h b/src/core/loader/elf.h index f1bf3db72..2e6b80982 100644 --- a/src/core/loader/elf_types.h +++ b/src/core/loader/elf.h | |||
| @@ -1,34 +1,34 @@ | |||
| 1 | // Copyright 2013 Dolphin Emulator Project | 1 | // Copyright 2013 Dolphin Emulator Project / Citra Emulator Project |
| 2 | // Licensed under GPLv2 | 2 | // Licensed under GPLv2 |
| 3 | // Refer to the license.txt file included. | 3 | // Refer to the license.txt file included. |
| 4 | 4 | ||
| 5 | #pragma once | 5 | #pragma once |
| 6 | 6 | ||
| 7 | #include "common/common.h" | ||
| 8 | |||
| 7 | // ELF Header Constants | 9 | // ELF Header Constants |
| 8 | 10 | ||
| 9 | // File type | 11 | // File type |
| 10 | enum ElfType | 12 | enum ElfType { |
| 11 | { | 13 | ET_NONE = 0, |
| 12 | ET_NONE = 0, | 14 | ET_REL = 1, |
| 13 | ET_REL = 1, | 15 | ET_EXEC = 2, |
| 14 | ET_EXEC = 2, | 16 | ET_DYN = 3, |
| 15 | ET_DYN = 3, | 17 | ET_CORE = 4, |
| 16 | ET_CORE = 4, | 18 | ET_LOPROC = 0xFF00, |
| 17 | ET_LOPROC = 0xFF00, | 19 | ET_HIPROC = 0xFFFF, |
| 18 | ET_HIPROC = 0xFFFF, | ||
| 19 | }; | 20 | }; |
| 20 | 21 | ||
| 21 | // Machine/Architecture | 22 | // Machine/Architecture |
| 22 | enum ElfMachine | 23 | enum ElfMachine { |
| 23 | { | 24 | EM_NONE = 0, |
| 24 | EM_NONE = 0, | 25 | EM_M32 = 1, |
| 25 | EM_M32 = 1, | 26 | EM_SPARC = 2, |
| 26 | EM_SPARC = 2, | 27 | EM_386 = 3, |
| 27 | EM_386 = 3, | 28 | EM_68K = 4, |
| 28 | EM_68K = 4, | 29 | EM_88K = 5, |
| 29 | EM_88K = 5, | 30 | EM_860 = 7, |
| 30 | EM_860 = 7, | 31 | EM_MIPS = 8 |
| 31 | EM_MIPS = 8 | ||
| 32 | }; | 32 | }; |
| 33 | 33 | ||
| 34 | // File version | 34 | // File version |
| @@ -62,8 +62,6 @@ enum ElfMachine | |||
| 62 | #define ELFDATA2LSB 1 | 62 | #define ELFDATA2LSB 1 |
| 63 | #define ELFDATA2MSB 2 | 63 | #define ELFDATA2MSB 2 |
| 64 | 64 | ||
| 65 | |||
| 66 | |||
| 67 | // Sections constants | 65 | // Sections constants |
| 68 | 66 | ||
| 69 | // Section indexes | 67 | // Section indexes |
| @@ -96,14 +94,13 @@ enum ElfMachine | |||
| 96 | // Custom section types | 94 | // Custom section types |
| 97 | #define SHT_PSPREL 0x700000a0 | 95 | #define SHT_PSPREL 0x700000a0 |
| 98 | 96 | ||
| 99 | |||
| 100 | // Section flags | 97 | // Section flags |
| 101 | enum ElfSectionFlags | 98 | enum ElfSectionFlags |
| 102 | { | 99 | { |
| 103 | SHF_WRITE = 0x1, | 100 | SHF_WRITE = 0x1, |
| 104 | SHF_ALLOC = 0x2, | 101 | SHF_ALLOC = 0x2, |
| 105 | SHF_EXECINSTR = 0x4, | 102 | SHF_EXECINSTR = 0x4, |
| 106 | SHF_MASKPROC = 0xF0000000, | 103 | SHF_MASKPROC = 0xF0000000, |
| 107 | }; | 104 | }; |
| 108 | 105 | ||
| 109 | // Symbol binding | 106 | // Symbol binding |
| @@ -188,63 +185,58 @@ typedef unsigned int Elf32_Off; | |||
| 188 | typedef signed int Elf32_Sword; | 185 | typedef signed int Elf32_Sword; |
| 189 | typedef unsigned int Elf32_Word; | 186 | typedef unsigned int Elf32_Word; |
| 190 | 187 | ||
| 191 | |||
| 192 | // ELF file header | 188 | // ELF file header |
| 193 | struct Elf32_Ehdr | 189 | struct Elf32_Ehdr { |
| 194 | { | 190 | unsigned char e_ident[EI_NIDENT]; |
| 195 | unsigned char e_ident[EI_NIDENT]; | 191 | Elf32_Half e_type; |
| 196 | Elf32_Half e_type; | 192 | Elf32_Half e_machine; |
| 197 | Elf32_Half e_machine; | 193 | Elf32_Word e_version; |
| 198 | Elf32_Word e_version; | 194 | Elf32_Addr e_entry; |
| 199 | Elf32_Addr e_entry; | 195 | Elf32_Off e_phoff; |
| 200 | Elf32_Off e_phoff; | 196 | Elf32_Off e_shoff; |
| 201 | Elf32_Off e_shoff; | 197 | Elf32_Word e_flags; |
| 202 | Elf32_Word e_flags; | 198 | Elf32_Half e_ehsize; |
| 203 | Elf32_Half e_ehsize; | 199 | Elf32_Half e_phentsize; |
| 204 | Elf32_Half e_phentsize; | 200 | Elf32_Half e_phnum; |
| 205 | Elf32_Half e_phnum; | 201 | Elf32_Half e_shentsize; |
| 206 | Elf32_Half e_shentsize; | 202 | Elf32_Half e_shnum; |
| 207 | Elf32_Half e_shnum; | 203 | Elf32_Half e_shstrndx; |
| 208 | Elf32_Half e_shstrndx; | ||
| 209 | }; | 204 | }; |
| 210 | 205 | ||
| 211 | // Section header | 206 | // Section header |
| 212 | struct Elf32_Shdr | 207 | struct Elf32_Shdr { |
| 213 | { | 208 | Elf32_Word sh_name; |
| 214 | Elf32_Word sh_name; | 209 | Elf32_Word sh_type; |
| 215 | Elf32_Word sh_type; | 210 | Elf32_Word sh_flags; |
| 216 | Elf32_Word sh_flags; | 211 | Elf32_Addr sh_addr; |
| 217 | Elf32_Addr sh_addr; | 212 | Elf32_Off sh_offset; |
| 218 | Elf32_Off sh_offset; | 213 | Elf32_Word sh_size; |
| 219 | Elf32_Word sh_size; | 214 | Elf32_Word sh_link; |
| 220 | Elf32_Word sh_link; | 215 | Elf32_Word sh_info; |
| 221 | Elf32_Word sh_info; | 216 | Elf32_Word sh_addralign; |
| 222 | Elf32_Word sh_addralign; | 217 | Elf32_Word sh_entsize; |
| 223 | Elf32_Word sh_entsize; | ||
| 224 | }; | 218 | }; |
| 225 | 219 | ||
| 226 | // Segment header | 220 | // Segment header |
| 227 | struct Elf32_Phdr | 221 | struct Elf32_Phdr { |
| 228 | { | 222 | Elf32_Word p_type; |
| 229 | Elf32_Word p_type; | 223 | Elf32_Off p_offset; |
| 230 | Elf32_Off p_offset; | 224 | Elf32_Addr p_vaddr; |
| 231 | Elf32_Addr p_vaddr; | 225 | Elf32_Addr p_paddr; |
| 232 | Elf32_Addr p_paddr; | 226 | Elf32_Word p_filesz; |
| 233 | Elf32_Word p_filesz; | 227 | Elf32_Word p_memsz; |
| 234 | Elf32_Word p_memsz; | 228 | Elf32_Word p_flags; |
| 235 | Elf32_Word p_flags; | 229 | Elf32_Word p_align; |
| 236 | Elf32_Word p_align; | ||
| 237 | }; | 230 | }; |
| 238 | 231 | ||
| 239 | // Symbol table entry | 232 | // Symbol table entry |
| 240 | struct Elf32_Sym | 233 | struct Elf32_Sym { |
| 241 | { | 234 | Elf32_Word st_name; |
| 242 | Elf32_Word st_name; | 235 | Elf32_Addr st_value; |
| 243 | Elf32_Addr st_value; | 236 | Elf32_Word st_size; |
| 244 | Elf32_Word st_size; | 237 | unsigned char st_info; |
| 245 | unsigned char st_info; | 238 | unsigned char st_other; |
| 246 | unsigned char st_other; | 239 | Elf32_Half st_shndx; |
| 247 | Elf32_Half st_shndx; | ||
| 248 | }; | 240 | }; |
| 249 | 241 | ||
| 250 | #define ELF32_ST_BIND(i) ((i)>>4) | 242 | #define ELF32_ST_BIND(i) ((i)>>4) |
| @@ -252,30 +244,88 @@ struct Elf32_Sym | |||
| 252 | #define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf)) | 244 | #define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf)) |
| 253 | 245 | ||
| 254 | // Relocation entries | 246 | // Relocation entries |
| 255 | struct Elf32_Rel | 247 | struct Elf32_Rel { |
| 256 | { | 248 | Elf32_Addr r_offset; |
| 257 | Elf32_Addr r_offset; | 249 | Elf32_Word r_info; |
| 258 | Elf32_Word r_info; | ||
| 259 | }; | 250 | }; |
| 260 | 251 | ||
| 261 | struct Elf32_Rela | 252 | struct Elf32_Rela { |
| 262 | { | 253 | Elf32_Addr r_offset; |
| 263 | Elf32_Addr r_offset; | 254 | Elf32_Word r_info; |
| 264 | Elf32_Word r_info; | 255 | Elf32_Sword r_addend; |
| 265 | Elf32_Sword r_addend; | ||
| 266 | }; | 256 | }; |
| 267 | 257 | ||
| 268 | #define ELF32_R_SYM(i) ((i)>>8) | 258 | #define ELF32_R_SYM(i) ((i)>>8) |
| 269 | #define ELF32_R_TYPE(i) ((unsigned char)(i)) | 259 | #define ELF32_R_TYPE(i) ((unsigned char)(i)) |
| 270 | #define ELF32_R_INFO(s,t) (((s)<<8 )+(unsigned char)(t)) | 260 | #define ELF32_R_INFO(s,t) (((s)<<8 )+(unsigned char)(t)) |
| 271 | 261 | ||
| 262 | struct Elf32_Dyn { | ||
| 263 | Elf32_Sword d_tag; | ||
| 264 | union { | ||
| 265 | Elf32_Word d_val; | ||
| 266 | Elf32_Addr d_ptr; | ||
| 267 | } d_un; | ||
| 268 | }; | ||
| 272 | 269 | ||
| 273 | struct Elf32_Dyn | 270 | enum KnownElfTypes { |
| 274 | { | 271 | KNOWNELF_PSP = 0, |
| 275 | Elf32_Sword d_tag; | 272 | KNOWNELF_DS = 1, |
| 276 | union | 273 | KNOWNELF_GBA = 2, |
| 277 | { | 274 | KNOWNELF_GC = 3, |
| 278 | Elf32_Word d_val; | 275 | }; |
| 279 | Elf32_Addr d_ptr; | 276 | |
| 280 | } d_un; | 277 | typedef int SectionID; |
| 278 | |||
| 279 | class ElfReader { | ||
| 280 | private: | ||
| 281 | char *base; | ||
| 282 | u32 *base32; | ||
| 283 | |||
| 284 | Elf32_Ehdr *header; | ||
| 285 | Elf32_Phdr *segments; | ||
| 286 | Elf32_Shdr *sections; | ||
| 287 | |||
| 288 | u32 *sectionAddrs; | ||
| 289 | bool bRelocate; | ||
| 290 | u32 entryPoint; | ||
| 291 | |||
| 292 | public: | ||
| 293 | ElfReader(void *ptr); | ||
| 294 | ~ElfReader() { } | ||
| 295 | |||
| 296 | u32 Read32(int off) const { return base32[off >> 2]; } | ||
| 297 | |||
| 298 | // Quick accessors | ||
| 299 | ElfType GetType() const { return (ElfType)(header->e_type); } | ||
| 300 | ElfMachine GetMachine() const { return (ElfMachine)(header->e_machine); } | ||
| 301 | u32 GetEntryPoint() const { return entryPoint; } | ||
| 302 | u32 GetFlags() const { return (u32)(header->e_flags); } | ||
| 303 | bool LoadInto(u32 vaddr); | ||
| 304 | bool LoadSymbols(); | ||
| 305 | |||
| 306 | int GetNumSegments() const { return (int)(header->e_phnum); } | ||
| 307 | int GetNumSections() const { return (int)(header->e_shnum); } | ||
| 308 | const u8 *GetPtr(int offset) const { return (u8*)base + offset; } | ||
| 309 | const char *GetSectionName(int section) const; | ||
| 310 | const u8 *GetSectionDataPtr(int section) const { | ||
| 311 | if (section < 0 || section >= header->e_shnum) | ||
| 312 | return nullptr; | ||
| 313 | if (sections[section].sh_type != SHT_NOBITS) | ||
| 314 | return GetPtr(sections[section].sh_offset); | ||
| 315 | else | ||
| 316 | return nullptr; | ||
| 317 | } | ||
| 318 | bool IsCodeSection(int section) const { | ||
| 319 | return sections[section].sh_type == SHT_PROGBITS; | ||
| 320 | } | ||
| 321 | const u8 *GetSegmentPtr(int segment) { | ||
| 322 | return GetPtr(segments[segment].p_offset); | ||
| 323 | } | ||
| 324 | u32 GetSectionAddr(SectionID section) const { return sectionAddrs[section]; } | ||
| 325 | int GetSectionSize(SectionID section) const { return sections[section].sh_size; } | ||
| 326 | SectionID GetSectionByName(const char *name, int firstSection = 0) const; //-1 for not found | ||
| 327 | |||
| 328 | bool DidRelocate() { | ||
| 329 | return bRelocate; | ||
| 330 | } | ||
| 281 | }; | 331 | }; |
diff --git a/src/core/loader/elf_reader.cpp b/src/core/loader/elf_reader.cpp deleted file mode 100644 index 123747f8e..000000000 --- a/src/core/loader/elf_reader.cpp +++ /dev/null | |||
| @@ -1,190 +0,0 @@ | |||
| 1 | // Copyright 2013 Dolphin Emulator Project | ||
| 2 | // Licensed under GPLv2 | ||
| 3 | // Refer to the license.txt file included. | ||
| 4 | |||
| 5 | #include <string> | ||
| 6 | |||
| 7 | #include "common/common.h" | ||
| 8 | |||
| 9 | #include "common/symbols.h" | ||
| 10 | #include "core/mem_map.h" | ||
| 11 | #include "core/loader/elf_reader.h" | ||
| 12 | |||
| 13 | //void bswap(Elf32_Word &w) {w = Common::swap32(w);} | ||
| 14 | //void bswap(Elf32_Half &w) {w = Common::swap16(w);} | ||
| 15 | |||
| 16 | #define bswap(w) w // Dirty bswap disable for now... 3DS is little endian, anyway | ||
| 17 | |||
| 18 | static void byteswapHeader(Elf32_Ehdr &ELF_H) | ||
| 19 | { | ||
| 20 | bswap(ELF_H.e_type); | ||
| 21 | bswap(ELF_H.e_machine); | ||
| 22 | bswap(ELF_H.e_ehsize); | ||
| 23 | bswap(ELF_H.e_phentsize); | ||
| 24 | bswap(ELF_H.e_phnum); | ||
| 25 | bswap(ELF_H.e_shentsize); | ||
| 26 | bswap(ELF_H.e_shnum); | ||
| 27 | bswap(ELF_H.e_shstrndx); | ||
| 28 | bswap(ELF_H.e_version); | ||
| 29 | bswap(ELF_H.e_entry); | ||
| 30 | bswap(ELF_H.e_phoff); | ||
| 31 | bswap(ELF_H.e_shoff); | ||
| 32 | bswap(ELF_H.e_flags); | ||
| 33 | } | ||
| 34 | |||
| 35 | static void byteswapSegment(Elf32_Phdr &sec) | ||
| 36 | { | ||
| 37 | bswap(sec.p_align); | ||
| 38 | bswap(sec.p_filesz); | ||
| 39 | bswap(sec.p_flags); | ||
| 40 | bswap(sec.p_memsz); | ||
| 41 | bswap(sec.p_offset); | ||
| 42 | bswap(sec.p_paddr); | ||
| 43 | bswap(sec.p_vaddr); | ||
| 44 | bswap(sec.p_type); | ||
| 45 | } | ||
| 46 | |||
| 47 | static void byteswapSection(Elf32_Shdr &sec) | ||
| 48 | { | ||
| 49 | bswap(sec.sh_addr); | ||
| 50 | bswap(sec.sh_addralign); | ||
| 51 | bswap(sec.sh_entsize); | ||
| 52 | bswap(sec.sh_flags); | ||
| 53 | bswap(sec.sh_info); | ||
| 54 | bswap(sec.sh_link); | ||
| 55 | bswap(sec.sh_name); | ||
| 56 | bswap(sec.sh_offset); | ||
| 57 | bswap(sec.sh_size); | ||
| 58 | bswap(sec.sh_type); | ||
| 59 | } | ||
| 60 | |||
| 61 | ElfReader::ElfReader(void *ptr) | ||
| 62 | { | ||
| 63 | base = (char*)ptr; | ||
| 64 | base32 = (u32 *)ptr; | ||
| 65 | header = (Elf32_Ehdr*)ptr; | ||
| 66 | byteswapHeader(*header); | ||
| 67 | |||
| 68 | segments = (Elf32_Phdr *)(base + header->e_phoff); | ||
| 69 | sections = (Elf32_Shdr *)(base + header->e_shoff); | ||
| 70 | |||
| 71 | entryPoint = header->e_entry; | ||
| 72 | |||
| 73 | LoadSymbols(); | ||
| 74 | } | ||
| 75 | |||
| 76 | const char *ElfReader::GetSectionName(int section) const | ||
| 77 | { | ||
| 78 | if (sections[section].sh_type == SHT_NULL) | ||
| 79 | return nullptr; | ||
| 80 | |||
| 81 | int nameOffset = sections[section].sh_name; | ||
| 82 | char *ptr = (char*)GetSectionDataPtr(header->e_shstrndx); | ||
| 83 | |||
| 84 | if (ptr) | ||
| 85 | return ptr + nameOffset; | ||
| 86 | else | ||
| 87 | return nullptr; | ||
| 88 | } | ||
| 89 | |||
| 90 | bool ElfReader::LoadInto(u32 vaddr) | ||
| 91 | { | ||
| 92 | DEBUG_LOG(MASTER_LOG,"String section: %i", header->e_shstrndx); | ||
| 93 | |||
| 94 | // Should we relocate? | ||
| 95 | bRelocate = (header->e_type != ET_EXEC); | ||
| 96 | |||
| 97 | if (bRelocate) | ||
| 98 | { | ||
| 99 | DEBUG_LOG(MASTER_LOG,"Relocatable module"); | ||
| 100 | entryPoint += vaddr; | ||
| 101 | } | ||
| 102 | else | ||
| 103 | { | ||
| 104 | DEBUG_LOG(MASTER_LOG,"Prerelocated executable"); | ||
| 105 | } | ||
| 106 | |||
| 107 | INFO_LOG(MASTER_LOG,"%i segments:", header->e_phnum); | ||
| 108 | |||
| 109 | // First pass : Get the bits into RAM | ||
| 110 | u32 segmentVAddr[32]; | ||
| 111 | |||
| 112 | u32 baseAddress = bRelocate?vaddr:0; | ||
| 113 | |||
| 114 | for (int i = 0; i < header->e_phnum; i++) | ||
| 115 | { | ||
| 116 | Elf32_Phdr *p = segments + i; | ||
| 117 | |||
| 118 | INFO_LOG(MASTER_LOG, "Type: %i Vaddr: %08x Filesz: %i Memsz: %i ", p->p_type, p->p_vaddr, p->p_filesz, p->p_memsz); | ||
| 119 | |||
| 120 | if (p->p_type == PT_LOAD) | ||
| 121 | { | ||
| 122 | segmentVAddr[i] = baseAddress + p->p_vaddr; | ||
| 123 | u32 writeAddr = segmentVAddr[i]; | ||
| 124 | |||
| 125 | const u8 *src = GetSegmentPtr(i); | ||
| 126 | u8 *dst = Memory::GetPointer(writeAddr); | ||
| 127 | u32 srcSize = p->p_filesz; | ||
| 128 | u32 dstSize = p->p_memsz; | ||
| 129 | u32 *s = (u32*)src; | ||
| 130 | u32 *d = (u32*)dst; | ||
| 131 | for (int j = 0; j < (int)(srcSize + 3) / 4; j++) | ||
| 132 | { | ||
| 133 | *d++ = /*_byteswap_ulong*/(*s++); | ||
| 134 | } | ||
| 135 | if (srcSize < dstSize) | ||
| 136 | { | ||
| 137 | //memset(dst + srcSize, 0, dstSize-srcSize); //zero out bss | ||
| 138 | } | ||
| 139 | INFO_LOG(MASTER_LOG,"Loadable Segment Copied to %08x, size %08x", writeAddr, p->p_memsz); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | |||
| 143 | |||
| 144 | INFO_LOG(MASTER_LOG,"Done loading."); | ||
| 145 | return true; | ||
| 146 | } | ||
| 147 | |||
| 148 | SectionID ElfReader::GetSectionByName(const char *name, int firstSection) const | ||
| 149 | { | ||
| 150 | for (int i = firstSection; i < header->e_shnum; i++) | ||
| 151 | { | ||
| 152 | const char *secname = GetSectionName(i); | ||
| 153 | |||
| 154 | if (secname != nullptr && strcmp(name, secname) == 0) | ||
| 155 | return i; | ||
| 156 | } | ||
| 157 | return -1; | ||
| 158 | } | ||
| 159 | |||
| 160 | bool ElfReader::LoadSymbols() | ||
| 161 | { | ||
| 162 | bool hasSymbols = false; | ||
| 163 | SectionID sec = GetSectionByName(".symtab"); | ||
| 164 | if (sec != -1) | ||
| 165 | { | ||
| 166 | int stringSection = sections[sec].sh_link; | ||
| 167 | const char *stringBase = (const char *)GetSectionDataPtr(stringSection); | ||
| 168 | |||
| 169 | //We have a symbol table! | ||
| 170 | Elf32_Sym *symtab = (Elf32_Sym *)(GetSectionDataPtr(sec)); | ||
| 171 | int numSymbols = sections[sec].sh_size / sizeof(Elf32_Sym); | ||
| 172 | for (int sym = 0; sym < numSymbols; sym++) | ||
| 173 | { | ||
| 174 | int size = symtab[sym].st_size; | ||
| 175 | if (size == 0) | ||
| 176 | continue; | ||
| 177 | |||
| 178 | // int bind = symtab[sym].st_info >> 4; | ||
| 179 | int type = symtab[sym].st_info & 0xF; | ||
| 180 | |||
| 181 | const char *name = stringBase + symtab[sym].st_name; | ||
| 182 | |||
| 183 | Symbols::Add(symtab[sym].st_value, name, size, type); | ||
| 184 | |||
| 185 | hasSymbols = true; | ||
| 186 | } | ||
| 187 | } | ||
| 188 | |||
| 189 | return hasSymbols; | ||
| 190 | } | ||
diff --git a/src/core/loader/elf_reader.h b/src/core/loader/elf_reader.h deleted file mode 100644 index 6f0ad84b3..000000000 --- a/src/core/loader/elf_reader.h +++ /dev/null | |||
| @@ -1,75 +0,0 @@ | |||
| 1 | // Copyright 2013 Dolphin Emulator Project | ||
| 2 | // Licensed under GPLv2 | ||
| 3 | // Refer to the license.txt file included. | ||
| 4 | |||
| 5 | #pragma once | ||
| 6 | |||
| 7 | #include "core/loader/elf_types.h" | ||
| 8 | |||
| 9 | enum KnownElfTypes | ||
| 10 | { | ||
| 11 | KNOWNELF_PSP = 0, | ||
| 12 | KNOWNELF_DS = 1, | ||
| 13 | KNOWNELF_GBA = 2, | ||
| 14 | KNOWNELF_GC = 3, | ||
| 15 | }; | ||
| 16 | |||
| 17 | typedef int SectionID; | ||
| 18 | |||
| 19 | class ElfReader | ||
| 20 | { | ||
| 21 | private: | ||
| 22 | char *base; | ||
| 23 | u32 *base32; | ||
| 24 | |||
| 25 | Elf32_Ehdr *header; | ||
| 26 | Elf32_Phdr *segments; | ||
| 27 | Elf32_Shdr *sections; | ||
| 28 | |||
| 29 | u32 *sectionAddrs; | ||
| 30 | bool bRelocate; | ||
| 31 | u32 entryPoint; | ||
| 32 | |||
| 33 | public: | ||
| 34 | ElfReader(void *ptr); | ||
| 35 | ~ElfReader() { } | ||
| 36 | |||
| 37 | u32 Read32(int off) const { return base32[off>>2]; } | ||
| 38 | |||
| 39 | // Quick accessors | ||
| 40 | ElfType GetType() const { return (ElfType)(header->e_type); } | ||
| 41 | ElfMachine GetMachine() const { return (ElfMachine)(header->e_machine); } | ||
| 42 | u32 GetEntryPoint() const { return entryPoint; } | ||
| 43 | u32 GetFlags() const { return (u32)(header->e_flags); } | ||
| 44 | bool LoadInto(u32 vaddr); | ||
| 45 | bool LoadSymbols(); | ||
| 46 | |||
| 47 | int GetNumSegments() const { return (int)(header->e_phnum); } | ||
| 48 | int GetNumSections() const { return (int)(header->e_shnum); } | ||
| 49 | const u8 *GetPtr(int offset) const { return (u8*)base + offset; } | ||
| 50 | const char *GetSectionName(int section) const; | ||
| 51 | const u8 *GetSectionDataPtr(int section) const | ||
| 52 | { | ||
| 53 | if (section < 0 || section >= header->e_shnum) | ||
| 54 | return nullptr; | ||
| 55 | if (sections[section].sh_type != SHT_NOBITS) | ||
| 56 | return GetPtr(sections[section].sh_offset); | ||
| 57 | else | ||
| 58 | return nullptr; | ||
| 59 | } | ||
| 60 | bool IsCodeSection(int section) const | ||
| 61 | { | ||
| 62 | return sections[section].sh_type == SHT_PROGBITS; | ||
| 63 | } | ||
| 64 | const u8 *GetSegmentPtr(int segment) | ||
| 65 | { | ||
| 66 | return GetPtr(segments[segment].p_offset); | ||
| 67 | } | ||
| 68 | u32 GetSectionAddr(SectionID section) const { return sectionAddrs[section]; } | ||
| 69 | int GetSectionSize(SectionID section) const { return sections[section].sh_size; } | ||
| 70 | SectionID GetSectionByName(const char *name, int firstSection = 0) const; //-1 for not found | ||
| 71 | |||
| 72 | bool DidRelocate() { | ||
| 73 | return bRelocate; | ||
| 74 | } | ||
| 75 | }; | ||
diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp index 41fa9c32e..d8060c0e6 100644 --- a/src/core/loader/loader.cpp +++ b/src/core/loader/loader.cpp | |||
| @@ -6,7 +6,7 @@ | |||
| 6 | #include "common/file_util.h" | 6 | #include "common/file_util.h" |
| 7 | 7 | ||
| 8 | #include "core/loader/loader.h" | 8 | #include "core/loader/loader.h" |
| 9 | #include "core/loader/elf_reader.h" | 9 | #include "core/loader/elf.h" |
| 10 | #include "core/loader/ncch.h" | 10 | #include "core/loader/ncch.h" |
| 11 | #include "core/system.h" | 11 | #include "core/system.h" |
| 12 | #include "core/core.h" | 12 | #include "core/core.h" |