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armfile64.c
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armfile64.c
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static char RcsHeader[] = "$Header: /usr/home/nakashim/proj-arm64/src/csim/RCS/armfile64.c,v 1.6 2022/03/29 00:06:56 nakashim Exp nakashim $";
/* ARM Instruction Simulator */
/* Copyright (C) 2007 by NAIST. */
/* Primary writer: Y.Nakashima */
/* nakashim@is.naist.jp */
/* armfile.c 2005/3/22 */
#ifndef _SYS_ELF_H
#define _SYS_ELF_H
#ifndef _SYS_ELFTYPES_H
#define _SYS_ELFTYPES_H
typedef unsigned long long Elf64_Addr;
typedef unsigned short Elf32_Half;
typedef unsigned long long Elf64_Off;
typedef int Elf32_Sword;
typedef unsigned int Elf32_Word;
typedef unsigned long long Elf64_Word;
#endif
#define ELF32_FSZ_ADDR 8
#define ELF32_FSZ_HALF 2
#define ELF32_FSZ_OFF 8
#define ELF32_FSZ_SWORD 4
#define ELF32_FSZ_WORD 4
/* ELF header */
#define EI_NIDENT 16
typedef struct {
unsigned char e_ident[EI_NIDENT]; /* ident bytes */
Elf32_Half e_type; /* file type */
Elf32_Half e_machine; /* target machine */
Elf32_Word e_version; /* file version */
Elf64_Addr e_entry; /* start address */
Elf64_Off e_phoff; /* phdr file offset */
Elf64_Off e_shoff; /* shdr file offset */
Elf32_Word e_flags; /* file flags */
Elf32_Half e_ehsize; /* sizeof ehdr */
Elf32_Half e_phentsize; /* sizeof phdr */
Elf32_Half e_phnum; /* number phdrs */
Elf32_Half e_shentsize; /* sizeof shdr */
Elf32_Half e_shnum; /* number shdrs */
Elf32_Half e_shstrndx; /* shdr string index */
} Elf32_Ehdr;
#define EI_MAG0 0 /* e_ident[] indexes */
#define EI_MAG1 1
#define EI_MAG2 2
#define EI_MAG3 3
#define EI_CLASS 4
#define EI_DATA 5
#define EI_VERSION 6
#define EI_PAD 7
#define ELFMAG0 0x7f /* EI_MAG */
#define ELFMAG1 'E'
#define ELFMAG2 'L'
#define ELFMAG3 'F'
#define ELFMAG "\177ELF"
#define SELFMAG 4
#define ELFCLASSNONE 0 /* EI_CLASS */
#define ELFCLASS32 1
#define ELFCLASS64 2
#define ELFCLASSNUM 3
#define ELFDATANONE 0 /* EI_DATA */
#define ELFDATA2LSB 1
#define ELFDATA2MSB 2
#define ELFDATANUM 3
#define ET_NONE 0 /* e_type */
#define ET_REL 1
#define ET_EXEC 2
#define ET_DYN 3
#define ET_CORE 4
#define ET_NUM 5
#define ET_LOPROC 0xff00 /* processor specific range */
#define ET_HIPROC 0xffff
#define EM_NONE 0 /* e_machine */
#define EM_M32 1 /* AT&T WE 32100 */
#define EM_SPARC 2 /* Sun SPARC */
#define EM_386 3 /* Intel 80386 */
#define EM_68K 4 /* Motorola 68000 */
#define EM_88K 5 /* Motorola 88000 */
#define EM_486 6 /* Intel 80486 */
#define EM_860 7 /* Intel i860 */
#define EM_MIPS 8
#define EM_UXPM 9
#define EM_UXPX 10
#define EM_NUM 11
#define EV_NONE 0 /* e_version, EI_VERSION */
#define EV_CURRENT 1
#define EV_NUM 2
/* Program header */
typedef struct {
Elf64_Word p_type; /* entry type */
Elf64_Off p_offset; /* file offset */
Elf64_Addr p_vaddr; /* virtual address */
Elf64_Addr p_paddr; /* physical address */
Elf64_Word p_filesz; /* file size */
Elf64_Word p_memsz; /* memory size */
Elf32_Word p_flags; /* entry flags */
Elf32_Word p_align; /* memory/file alignment */
} Elf32_Phdr;
#define PT_NULL 0 /* p_type */
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_NUM 7
#define PT_LOPROC 0x70000000 /* processor specific range */
#define PT_HIPROC 0x7fffffff
#define PF_R 0x4 /* p_flags */
#define PF_W 0x2
#define PF_X 0x1
#define PF_MASKPROC 0xf0000000 /* processor specific values */
/* Section header */
typedef struct {
Elf32_Word sh_name; /* section name */
Elf32_Word sh_type; /* SHT_... */
Elf64_Word sh_flags; /* SHF_... */
Elf64_Addr sh_addr; /* virtual address */
Elf64_Off sh_offset; /* file offset */
Elf64_Word sh_size; /* section size */
Elf32_Word sh_link; /* misc info */
Elf32_Word sh_info; /* misc info */
Elf64_Word sh_addralign; /* memory alignment */
Elf64_Word sh_entsize; /* entry size if table */
} Elf32_Shdr;
#define SHT_NULL 0 /* sh_type */
#define SHT_PROGBITS 1
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
#define SHT_RELA 4
#define SHT_HASH 5
#define SHT_DYNAMIC 6
#define SHT_NOTE 7
#define SHT_NOBITS 8
#define SHT_REL 9
#define SHT_SHLIB 10
#define SHT_DYNSYM 11
#define SHT_NUM 12
#define SHT_LOUSER 0x80000000
#define SHT_HIUSER 0xffffffff
#define SHT_LOPROC 0x70000000 /* processor specific range */
#define SHT_HIPROC 0x7fffffff
#define SHF_WRITE 0x1 /* sh_flags */
#define SHF_ALLOC 0x2
#define SHF_EXECINSTR 0x4
#define SHF_MASKPROC 0xf0000000 /* processor specific values */
#define SHN_UNDEF 0 /* special section numbers */
#define SHN_LORESERVE 0xff00
#define SHN_ABS 0xfff1
#define SHN_COMMON 0xfff2
#define SHN_HIRESERVE 0xffff
#define SHN_LOPROC 0xff00 /* processor specific range */
#define SHN_HIPROC 0xff1f
/* Symbol table */
typedef struct {
Elf32_Word st_name;
Elf64_Addr st_value;
Elf32_Word st_size;
unsigned char st_info; /* bind, type: ELF_32_ST_... */
unsigned char st_other;
Elf32_Half st_shndx; /* SHN_... */
} Elf32_Sym;
#define STN_UNDEF 0
#define ELF32_ST_BIND(info) ((info) >> 4)
#define ELF32_ST_TYPE(info) ((info) & 0xf)
#define ELF32_ST_INFO(bind,type) (((bind)<<4)+((type)&0xf))
#define STB_LOCAL 0 /* BIND */
#define STB_GLOBAL 1
#define STB_WEAK 2
#define STB_NUM 3
#define STB_LOPROC 13 /* processor specific range */
#define STB_HIPROC 15
#define STT_NOTYPE 0 /* TYPE */
#define STT_OBJECT 1
#define STT_FUNC 2
#define STT_SECTION 3
#define STT_FILE 4
#define STT_NUM 5
#define STT_LOPROC 13 /* processor specific range */
#define STT_HIPROC 15
/* Relocation */
typedef struct {
Elf64_Addr r_offset;
Elf32_Word r_info; /* sym, type: ELF32_R_... */
} Elf32_Rel;
typedef struct {
Elf64_Addr r_offset;
Elf32_Word r_info; /* sym, type: ELF32_R_... */
Elf32_Sword r_addend;
} Elf32_Rela;
#define ELF32_R_SYM(info) ((info)>>8)
#define ELF32_R_TYPE(info) ((unsigned char)(info))
#define ELF32_R_INFO(sym,type) (((sym)<<8)+(unsigned char)(type))
#endif
#include "csim.h"
/* A.OUT STRUCT */
/* READ_ELF() */
read_armelf(file)
char *file;
{
struct aout_head {
unsigned short a_info;
unsigned short a_magic;
int a_text;
int a_data;
int a_bss;
int a_syms;
int a_entry;
int a_trsize;
int a_drsize;
};
struct aout_head Ahead;
struct rel {
int r_off;
unsigned int r_sym: 24,
r_extern: 1,
: 2,
r_type: 5;
int r_addend;
};
struct sym {
int s_name;
unsigned int s_type: 8,
: 24;
int s_value;
};
struct rel *Drel;
struct rel *Trel;
struct sym *Sym;
/* ELF STRUCT */
Elf32_Ehdr Ehead;
Elf32_Rel *E_textrel;
Elf32_Rel *E_datarel;
Elf32_Sym *E_sym;
int Phead_index0;
int Phead_index1;
Elf32_Phdr Phead[3];
Elf32_Shdr Shead[32];
/* BUFFER */
char *Text_p, *Data_p, *Textrel_p;
char *Datarel_p, *Sym_p, *Str_p;
char *Shstr_p;
int len, count;
int trsz_num, drsz_num;
int textndx = 0;
int rodtndx = 0;
int datandx = 0;
int bssndx = 0;
int symtabndx = 0;
int strtabndx = 0;
int baseaddr = 0;
/* FILEOPEN */
FILE *fp;
int i, j;
unsigned char *memp;
if (!file) {
printf("Target program not specified\n");
exit(1);
}
fp = fopen(file, "r");
if (fp == NULL){
printf("Can't open elf_file %s\n", file);
exit(1);
}
/* READ ELF_HEADER */
if (fread(&Ehead, 1, sizeof Ehead, fp) != (sizeof Ehead)){
printf("Can't read elf_header\n");
exit(1);
}
#if 0
printf("eh00:type=%08.8x machine=%08.8x version=%08.8x entry=%08.8x phoff=%08.8x shoff=%08.8x flags=%08.8x ehsize=%08.8x phentsize=%08.8x phnum=%08.8x shenteize=%08.8x shnum=%08.8x shstrndx=%08.8x\n",
(int)Ehead.e_type,
(int)Ehead.e_machine,
(int)Ehead.e_version,
(int)Ehead.e_entry,
(int)Ehead.e_phoff,
(int)Ehead.e_shoff,
(int)Ehead.e_flags,
(int)Ehead.e_ehsize,
(int)Ehead.e_phentsize,
(int)Ehead.e_phnum,
(int)Ehead.e_shentsize,
(int)Ehead.e_shnum,
(int)Ehead.e_shstrndx);
#endif
fseek(fp, Ehead.e_shoff, 0);
for (i=0; i<32 && i<Ehead.e_shnum; i++) {
fread(&Shead[i], 1, Ehead.e_shentsize, fp);
#if 0
printf("sh%02.2d:name=%08.8x type=%08.8x flags=%08.8x addr=%08.8x offset=%08.8x size=%08.8x link=%08.8x info=%08.8x addralign=%08.8x entsize=%08.8x\n",
i,
(int)Shead[i].sh_name,
(int)Shead[i].sh_type,
(int)Shead[i].sh_flags,
(int)Shead[i].sh_addr,
(int)Shead[i].sh_offset,
(int)Shead[i].sh_size,
(int)Shead[i].sh_link,
(int)Shead[i].sh_info,
(int)Shead[i].sh_addralign,
(int)Shead[i].sh_entsize);
#endif
}
Shstr_p = (char *)malloc(Shead[Ehead.e_shstrndx].sh_size);
fseek(fp, Shead[Ehead.e_shstrndx].sh_offset, 0);
if (fread(Shstr_p, 1, Shead[Ehead.e_shstrndx].sh_size, fp) != Shead[Ehead.e_shstrndx].sh_size) {
printf("Can't read shstr\n");
exit(1);
}
for (i=0; i<32 && i<Ehead.e_shnum; i++) {
if (!strcmp(Shstr_p+Shead[i].sh_name, ".text"))
textndx = i;
else if (!strcmp(Shstr_p+Shead[i].sh_name, ".rodata"))
rodtndx = i;
else if (!strcmp(Shstr_p+Shead[i].sh_name, ".data"))
datandx = i;
else if (!strcmp(Shstr_p+Shead[i].sh_name, ".bss"))
bssndx = i;
else if (!strcmp(Shstr_p+Shead[i].sh_name, ".symtab"))
symtabndx = i;
else if (!strcmp(Shstr_p+Shead[i].sh_name, ".strtab"))
strtabndx = i;
}
printf(" ELF:text=%08.8x ", (int)Shead[textndx].sh_size);
printf("rodt=%08.8x ", (int)Shead[rodtndx].sh_size);
printf("data=%08.8x ", (int)Shead[datandx].sh_size);
printf("bss=%08.8x ", (int)Shead[bssndx].sh_size);
printf("symt=%08.8x ", (int)Shead[symtabndx].sh_size);
printf("strt=%08.8x\n", (int)Shead[strtabndx].sh_size-1);
/* READ PROGRAM_HEADER */
fseek(fp, Ehead.e_phoff, 0);
for (i=0; i<Ehead.e_phnum; i++) {
if (fread(&Phead[i], 1, sizeof *Phead, fp) != (sizeof *Phead)){
printf("Can't read program_header\n");
exit(1);
}
#if 0
printf("ph%d:type=%08.8x offset=%08.8x vaddr=%08.8x paddr=%08.8x filesz=%08.8x memsz=%08.8x flags=%08.8x align=%08.8x\n",
i,
(int)Phead[i].p_type,
(int)Phead[i].p_offset,
(int)Phead[i].p_vaddr,
(int)Phead[i].p_paddr,
(int)Phead[i].p_filesz,
(int)Phead[i].p_memsz,
(int)Phead[i].p_flags,
(int)Phead[i].p_align);
#endif
}
if ((int)Phead[0].p_type == 1) {
Phead_index0 = 0;
Phead_index1 = 1;
}
else { /* maybe 0 is EXIDX */
Phead_index0 = 1;
Phead_index1 = 2;
}
if ((int)Shead[datandx].sh_size == 0) {
/* MALLOC */
if ((Text_p = (char *)malloc((int)Phead[Phead_index0].p_memsz)) == NULL){
printf("Can't malloc elf_text=%d\n", (int)Phead[Phead_index0].p_memsz);
exit(1);
}
memset(Text_p, 0, (int)Phead[Phead_index0].p_memsz-1);
}
else {
/* MALLOC */
if ((Text_p = (char *)malloc((int)Phead[Phead_index1].p_vaddr-(int)Phead[Phead_index0].p_vaddr)) == NULL){
printf("Can't malloc elf_text=%d\n", (int)Phead[Phead_index1].p_vaddr-(int)Phead[Phead_index0].p_vaddr);
exit(1);
}
memset(Text_p, 0, (int)Phead[Phead_index1].p_vaddr-(int)Phead[Phead_index0].p_vaddr);
if ((Data_p = (char *)malloc(((int)Phead[Phead_index1].p_memsz-1|7)+1)) == NULL){
printf("Can't malloc elf_data\n");
exit(1);
}
memset(Data_p, 0, ((int)Phead[Phead_index1].p_memsz-1|7)+1);
}
/* READ (text, data) */
if ((int)Shead[textndx].sh_size) {
fseek(fp, (int)Phead[Phead_index0].p_offset, 0);
if (fread(Text_p, 1, (int)Phead[Phead_index0].p_filesz, fp) != (int)Phead[Phead_index0].p_filesz){
printf("Can't read elf_text\n");
exit(1);
}
}
if ((int)Shead[datandx].sh_size) {
fseek(fp, (int)Phead[Phead_index1].p_offset, 0);
if (fread(Data_p, 1, (int)Phead[Phead_index1].p_filesz, fp) != (int)Phead[Phead_index1].p_filesz){
printf("Can't read elf_data\n");
exit(1);
}
}
fclose(fp);
/* CONV_DATA() */
/* ELF_HEADER --> A.OUT_HEADER */
if (Shead[datandx].sh_size == 0) {
Ahead.a_info = 0x00c8;
Ahead.a_magic = 0x0107;
Ahead.a_text = (int)Shead[textndx].sh_size ? (int)Phead[Phead_index0].p_memsz:0;
Ahead.a_data = 0;
Ahead.a_bss = 0;
Ahead.a_syms = 0;
Ahead.a_entry = (int)Shead[textndx].sh_addr; /*Phead[Phead_index0].p_vaddr;*/
Ahead.a_trsize = 0;
Ahead.a_drsize = 0;
}
else {
Ahead.a_info = 0x00c8;
Ahead.a_magic = 0x0107;
Ahead.a_text = (int)Phead[Phead_index1].p_vaddr-(int)Phead[Phead_index0].p_vaddr;
Ahead.a_data = ((int)Phead[Phead_index1].p_memsz-1|7)+1;
Ahead.a_bss = 0;
Ahead.a_syms = 0;
Ahead.a_entry = (int)Shead[textndx].sh_addr; /*Phead[Phead_index0].p_vaddr;*/
Ahead.a_trsize = 0;
Ahead.a_drsize = 0;
}
printf(" BSD:text=%08.8x ", Ahead.a_text);
printf("data=%08.8x ", Ahead.a_data);
printf("bss=-------- ");
printf("symt=-------- ");
printf("strt=%08.8x\n", (int)Shead[strtabndx].sh_size-1);
/* WRITE_AOUT() */
if (Ahead.a_entry + Ahead.a_text + Ahead.a_data > ALOCLIMIT) {
printf("Program too large\n");
exit(1);
}
memp = &mem[0][HDRADDR]; /* initial malloc pointer */
*(Ull*)memp = ((Ahead.a_entry+Ahead.a_text+Ahead.a_data)+(LINESIZE-1))&~(LINESIZE-1);
memp = &mem[0][HDRADDR+8]; /* latest malloc pointer */
*(Ull*)memp = ((Ahead.a_entry+Ahead.a_text+Ahead.a_data)+(LINESIZE-1))&~(LINESIZE-1);
memp = &mem[0][HDRADDR+16]; /* initial stack pointer */
*(Ull*)memp = STACKINIT;
memcpy(&mem[0][Ahead.a_entry], Text_p, Ahead.a_text);
memcpy(&mem[0][Ahead.a_entry+Ahead.a_text], Data_p, Ahead.a_data);
free(Text_p);
free(Data_p);
free(Shstr_p);
Ahead.a_entry = Ehead.e_entry;
return (Ahead.a_entry);
}