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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [src/] [MemoryLoad.cpp] - Rev 500
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/* MemoryLoad.cpp -- Program load functions Copyright (C) 1999 Damjan Lampret, lampret@opencores.org Copyright (C) 2008 Embecosm Limited Copyright (C) 2009 Julius Baxter, julius@orsoc.se Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* This program is commented throughout in a fashion suitable for processing with Doxygen. */ /* System includes */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "MemoryLoad.h" #include "OrpsocMain.h" //! Constructor for the ORPSoC memory loader class //! Initializes various values //! @param[in] orpsoc The SystemC Verilated ORPSoC instance //! @param[in] accessor Accessor class for this Verilated ORPSoC model MemoryLoad::MemoryLoad(OrpsocAccess * _accessor) { accessor = _accessor; } // MemoryAccess () /*---------------------------------------------------------------------------*/ /*!Copy a string with null termination This function is very similar to strncpy, except it null terminates the string. A global function also used by the CUC. @param[in] dst The destination string @param[in] src The source string @param[in] n Number of chars to copy EXCLUDING the null terminator (i.e. dst had better have room for n+1 chars) @return A pointer to dst */ /*---------------------------------------------------------------------------*/ char *MemoryLoad::strstrip(char *dst, const char *src, int n) { strncpy(dst, src, n); *(dst + n) = '\0'; return dst; } /* strstrip () */ #if IMM_STATS int MemoryLoad::bits(uint32_t val) { int i = 1; if (!val) return 0; while (val != 0 && (int32_t) val != -1) { i++; val = (int32_t) val >> 1; } return i; } void MemoryLoad::check_insn(uint32_t insn) { int insn_index = insn_decode(insn); struct insn_op_struct *opd = op_start[insn_index]; uint32_t data = 0; int dis = 0; const char *name; if (!insn || insn_index < 0) return; name = insn_name(insn_index); if (strcmp(name, "l.nop") == 0 || strcmp(name, "l.sys") == 0) return; while (1) { uint32_t tmp = 0 unsigned int nbits = 0; while (1) { tmp |= ((insn >> (opd->type & OPTYPE_SHR)) & ((1 << opd->data) - 1)) << nbits; nbits += opd->data; if (opd->type & OPTYPE_OP) break; opd++; } /* Do we have to sign extend? */ if (opd->type & OPTYPE_SIG) { int sbit = (opd->type & OPTYPE_SBIT) >> OPTYPE_SBIT_SHR; if (tmp & (1 << sbit)) tmp |= 0xFFFFFFFF << sbit; } if (opd->type & OPTYPE_DIS) { /* We have to read register later. */ data += tmp; dis = 1; } else { if (!(opd->type & OPTYPE_REG) || dis) { if (!dis) data = tmp; if (strcmp(name, "l.movhi") == 0) { movhi = data << 16; } else { data |= movhi; //PRINTF ("%08x %s\n", data, name); if (! (or32_opcodes[insn_index].flags & OR32_IF_DELAY)) { bcnt[bits(data)][0]++; bsum[0]++; } else { if (strcmp(name, "l.bf") == 0 || strcmp(name, "l.bnf") == 0) { bcnt[bits(data)][1]++; bsum[1]++; } else { bcnt[bits(data)][2]++; bsum[2]++; } } } } data = 0; dis = 0; } if (opd->type & OPTYPE_LAST) { return; } opd++; } } #endif /*---------------------------------------------------------------------------*/ /*!Add an instruction to the program @note insn must be in big endian format @param[in] address The address to use @param[in] insn The instruction to add */ /*---------------------------------------------------------------------------*/ void MemoryLoad::addprogram(oraddr_t address, uint32_t insn) { int vaddr = (int)address; /* Use the whole-word write */ accessor->set_mem32(vaddr, insn); /*printf("* addprogram: addr 0x%.8x insn: 0x%.8x (conf: 0x%.8x)\n", vaddr, insn, accessor->get_mem32(vaddr)); */ freemem += 4; } /* addprogram () */ /*---------------------------------------------------------------------------*/ /*!Load big-endian COFF file @param[in] filename File to load @param[in] sections Number of sections in file */ /*---------------------------------------------------------------------------*/ void MemoryLoad::readfile_coff(char *filename, short sections) { FILE *inputfs; char inputbuf[4]; uint32_t insn; int32_t sectsize; COFF_AOUTHDR coffaouthdr; struct COFF_scnhdr coffscnhdr; int len; int firstthree = 0; int breakpoint = 0; if (!(inputfs = fopen(filename, "r"))) { perror("readfile_coff"); exit(1); } if (fseek(inputfs, sizeof(COFF_FILHDR), SEEK_SET) == -1) { fclose(inputfs); perror("readfile_coff"); exit(1); } if (fread(&coffaouthdr, sizeof(coffaouthdr), 1, inputfs) != 1) { fclose(inputfs); perror("readfile_coff"); exit(1); } while (sections--) { uint32_t scnhdr_pos = sizeof(COFF_FILHDR) + sizeof(coffaouthdr) + sizeof(struct COFF_scnhdr) * firstthree; if (fseek(inputfs, scnhdr_pos, SEEK_SET) == -1) { fclose(inputfs); perror("readfile_coff"); exit(1); } if (fread(&coffscnhdr, sizeof(struct COFF_scnhdr), 1, inputfs) != 1) { fclose(inputfs); perror("readfile_coff"); exit(1); } PRINTF("Section: %s,", coffscnhdr.s_name); PRINTF(" paddr: 0x%.8lx,", COFF_LONG_H(coffscnhdr.s_paddr)); PRINTF(" vaddr: 0x%.8lx,", COFF_LONG_H(coffscnhdr.s_vaddr)); PRINTF(" size: 0x%.8lx,", COFF_LONG_H(coffscnhdr.s_size)); PRINTF(" scnptr: 0x%.8lx\n", COFF_LONG_H(coffscnhdr.s_scnptr)); sectsize = COFF_LONG_H(coffscnhdr.s_size); ++firstthree; /* loading section */ freemem = COFF_LONG_H(coffscnhdr.s_paddr); if (fseek(inputfs, COFF_LONG_H(coffscnhdr.s_scnptr), SEEK_SET) == -1) { fclose(inputfs); perror("readfile_coff"); exit(1); } while (sectsize > 0 && (len = fread(&inputbuf, sizeof(inputbuf), 1, inputfs))) { insn = COFF_LONG_H(inputbuf); //len = insn_len (insn_decode (insn)); len = 4; if (len == 2) { fseek(inputfs, -2, SEEK_CUR); } addprogram(freemem, insn); sectsize -= len; } } if (firstthree < 3) { PRINTF("One or more missing sections. At least"); PRINTF(" three sections expected (.text, .data, .bss).\n"); exit(1); } if (firstthree > 3) { PRINTF("Warning: one or more extra sections. These"); PRINTF(" sections were handled as .data sections.\n"); } fclose(inputfs); PRINTF("Finished loading COFF.\n"); return; } /* readfile_coff () */ /*---------------------------------------------------------------------------*/ /*!Load symbols from big-endian COFF file @param[in] filename File to load @param[in] symptr Symbol pointer value @param[in] syms Symbols value */ /*---------------------------------------------------------------------------*/ void MemoryLoad::readsyms_coff(char *filename, uint32_t symptr, uint32_t syms) { FILE *inputfs; struct COFF_syment coffsymhdr; int count = 0; uint32_t nsyms = syms; if (!(inputfs = fopen(filename, "r"))) { perror("readsyms_coff"); exit(1); } if (fseek(inputfs, symptr, SEEK_SET) == -1) { fclose(inputfs); perror("readsyms_coff"); exit(1); } while (syms--) { int i, n; if (fread(&coffsymhdr, COFF_SYMESZ, 1, inputfs) != 1) { fclose(inputfs); perror("readsyms_coff"); exit(1); } n = (unsigned char)coffsymhdr.e_numaux[0]; /* check whether this symbol belongs to a section and is external symbol; ignore all others */ if (COFF_SHORT_H(coffsymhdr.e_scnum) >= 0 && coffsymhdr.e_sclass[0] == C_EXT) { if (*((uint32_t *) coffsymhdr.e.e.e_zeroes)) { if (strlen(coffsymhdr.e.e_name) && strlen(coffsymhdr.e.e_name) < 9) add_label(COFF_LONG_H (coffsymhdr.e_value), coffsymhdr.e.e_name); } else { uint32_t fpos = ftell(inputfs); if (fseek (inputfs, symptr + nsyms * COFF_SYMESZ + COFF_LONG_H(coffsymhdr.e.e.e_offset), SEEK_SET) == 0) { char tmp[33], *s = &tmp[0]; while (s != &tmp[32]) if ((*(s++) = fgetc(inputfs)) == 0) break; tmp[32] = 0; add_label(COFF_LONG_H (coffsymhdr.e_value), &tmp[0]); } fseek(inputfs, fpos, SEEK_SET); } } for (i = 0; i < n; i++) if (fread(&coffsymhdr, COFF_SYMESZ, 1, inputfs) != 1) { fclose(inputfs); perror("readsyms_coff3"); exit(1); } syms -= n; count += n; } fclose(inputfs); PRINTF("Finished loading symbols.\n"); return; } /*---------------------------------------------------------------------------*/ /*!Read an ELF file @param[in] filename File to load */ /*---------------------------------------------------------------------------*/ void MemoryLoad::readfile_elf(char *filename) { FILE *inputfs; struct elf32_hdr elfhdr; struct elf32_phdr *elf_phdata = NULL; struct elf32_shdr *elf_spnt, *elf_shdata; struct elf32_sym *sym_tbl = (struct elf32_sym *)0; uint32_t syms = 0; char *str_tbl = (char *)0; char *s_str = (char *)0; int breakpoint = 0; uint32_t inputbuf; uint32_t padd; uint32_t insn; int i, j, sectsize, len; if (!(inputfs = fopen(filename, "r"))) { perror("readfile_elf"); exit(1); } if (fread(&elfhdr, sizeof(elfhdr), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } if ((elf_shdata = (struct elf32_shdr *)malloc(ELF_SHORT_H(elfhdr.e_shentsize) * ELF_SHORT_H(elfhdr.e_shnum))) == NULL) { perror("readfile_elf"); exit(1); } if (fseek(inputfs, ELF_LONG_H(elfhdr.e_shoff), SEEK_SET) != 0) { perror("readfile_elf"); exit(1); } if (fread (elf_shdata, ELF_SHORT_H(elfhdr.e_shentsize) * ELF_SHORT_H(elfhdr.e_shnum), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } if (ELF_LONG_H(elfhdr.e_phoff)) { if ((elf_phdata = (struct elf32_phdr *)malloc(ELF_SHORT_H(elfhdr.e_phnum) * ELF_SHORT_H (elfhdr.e_phentsize))) == NULL) { perror("readfile_elf"); exit(1); } if (fseek(inputfs, ELF_LONG_H(elfhdr.e_phoff), SEEK_SET) != 0) { perror("readfile_elf"); exit(1); } if (fread (elf_phdata, ELF_SHORT_H(elfhdr.e_phnum) * ELF_SHORT_H(elfhdr.e_phentsize), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } } for (i = 0, elf_spnt = elf_shdata; i < ELF_SHORT_H(elfhdr.e_shnum); i++, elf_spnt++) { if (ELF_LONG_H(elf_spnt->sh_type) == SHT_STRTAB) { if (NULL != str_tbl) { free(str_tbl); } if ((str_tbl = (char *)malloc(ELF_LONG_H(elf_spnt->sh_size))) == NULL) { perror("readfile_elf"); exit(1); } if (fseek (inputfs, ELF_LONG_H(elf_spnt->sh_offset), SEEK_SET) != 0) { perror("readfile_elf"); exit(1); } if (fread (str_tbl, ELF_LONG_H(elf_spnt->sh_size), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } } else if (ELF_LONG_H(elf_spnt->sh_type) == SHT_SYMTAB) { if (NULL != sym_tbl) { free(sym_tbl); } if ((sym_tbl = (struct elf32_sym *) malloc(ELF_LONG_H(elf_spnt->sh_size))) == NULL) { perror("readfile_elf"); exit(1); } if (fseek (inputfs, ELF_LONG_H(elf_spnt->sh_offset), SEEK_SET) != 0) { perror("readfile_elf"); exit(1); } if (fread (sym_tbl, ELF_LONG_H(elf_spnt->sh_size), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } syms = ELF_LONG_H(elf_spnt->sh_size) / ELF_LONG_H(elf_spnt->sh_entsize); } } if (ELF_SHORT_H(elfhdr.e_shstrndx) != SHN_UNDEF) { elf_spnt = &elf_shdata[ELF_SHORT_H(elfhdr.e_shstrndx)]; if ((s_str = (char *)malloc(ELF_LONG_H(elf_spnt->sh_size))) == NULL) { perror("readfile_elf"); exit(1); } if (fseek(inputfs, ELF_LONG_H(elf_spnt->sh_offset), SEEK_SET) != 0) { perror("readfile_elf"); exit(1); } if (fread(s_str, ELF_LONG_H(elf_spnt->sh_size), 1, inputfs) != 1) { perror("readfile_elf"); exit(1); } } for (i = 0, elf_spnt = elf_shdata; i < ELF_SHORT_H(elfhdr.e_shnum); i++, elf_spnt++) { if ((ELF_LONG_H(elf_spnt->sh_type) & SHT_PROGBITS) && (ELF_LONG_H(elf_spnt->sh_flags) & SHF_ALLOC)) { padd = ELF_LONG_H(elf_spnt->sh_addr); for (j = 0; j < ELF_SHORT_H(elfhdr.e_phnum); j++) { if (ELF_LONG_H(elf_phdata[j].p_offset) && ELF_LONG_H(elf_phdata[j].p_offset) <= ELF_LONG_H(elf_spnt->sh_offset) && (ELF_LONG_H(elf_phdata[j].p_offset) + ELF_LONG_H(elf_phdata[j].p_memsz)) > ELF_LONG_H(elf_spnt->sh_offset)) padd = ELF_LONG_H(elf_phdata[j].p_paddr) + ELF_LONG_H(elf_spnt->sh_offset) - ELF_LONG_H(elf_phdata[j].p_offset); } if (!gQuiet) { if (ELF_LONG_H(elf_spnt->sh_name) && s_str) printf("* Section: %s,", &s_str[ELF_LONG_H(elf_spnt->sh_name)]); else printf("* Section: noname,"); printf("* vaddr: 0x%.8lx,", ELF_LONG_H(elf_spnt->sh_addr)); printf("* paddr: 0x%" PRIx32, padd); printf("* offset: 0x%.8lx,", ELF_LONG_H(elf_spnt->sh_offset)); printf("* size: 0x%.8lx\n", ELF_LONG_H(elf_spnt->sh_size)); } freemem = padd; sectsize = ELF_LONG_H(elf_spnt->sh_size); if (fseek (inputfs, ELF_LONG_H(elf_spnt->sh_offset), SEEK_SET) != 0) { perror("readfile_elf"); free(elf_phdata); exit(1); } while (sectsize > 0 && (len = fread(&inputbuf, sizeof(inputbuf), 1, inputfs))) { insn = ELF_LONG_H(inputbuf); //PRINTF("* addprogram(%.8x, %.8x, %d)\n", freemem, insn, breakpoint); addprogram(freemem, insn); sectsize -= 4; } } } if (str_tbl) { i = 0; while (syms--) { if (sym_tbl[i].st_name && sym_tbl[i].st_info && ELF_SHORT_H(sym_tbl[i].st_shndx) < 0x8000) { add_label(ELF_LONG_H(sym_tbl[i].st_value), &str_tbl[ELF_LONG_H (sym_tbl[i].st_name)]); } i++; } } if (NULL != str_tbl) { free(str_tbl); } if (NULL != sym_tbl) { free(sym_tbl); } free(s_str); free(elf_phdata); free(elf_shdata); } /* Identify file type and call appropriate readfile_X routine. It only handles orX-coff-big executables at the moment. */ void MemoryLoad::identifyfile(char *filename) { FILE *inputfs; COFF_FILHDR coffhdr; struct elf32_hdr elfhdr; if (!(inputfs = fopen(filename, "r"))) { perror(filename); fflush(stdout); fflush(stderr); exit(1); } if (fread(&coffhdr, sizeof(coffhdr), 1, inputfs) == 1) { if (COFF_SHORT_H(coffhdr.f_magic) == 0x17a) { uint32_t opthdr_size; PRINTF("COFF magic: 0x%.4x\n", COFF_SHORT_H(coffhdr.f_magic)); PRINTF("COFF flags: 0x%.4x\n", COFF_SHORT_H(coffhdr.f_flags)); PRINTF("COFF symptr: 0x%.8lx\n", COFF_LONG_H(coffhdr.f_symptr)); if ((COFF_SHORT_H(coffhdr.f_flags) & COFF_F_EXEC) != COFF_F_EXEC) { PRINTF("This COFF is not an executable.\n"); exit(1); } opthdr_size = COFF_SHORT_H(coffhdr.f_opthdr); if (opthdr_size != sizeof(COFF_AOUTHDR)) { PRINTF ("COFF optional header is missing or not recognized.\n"); PRINTF("COFF f_opthdr: 0x%" PRIx32 "\n", opthdr_size); exit(1); } fclose(inputfs); readfile_coff(filename, COFF_SHORT_H(coffhdr.f_nscns)); readsyms_coff(filename, COFF_LONG_H(coffhdr.f_symptr), COFF_LONG_H(coffhdr.f_nsyms)); return; } else { PRINTF("Not COFF file format\n"); fseek(inputfs, 0, SEEK_SET); } } if (fread(&elfhdr, sizeof(elfhdr), 1, inputfs) == 1) { if (elfhdr.e_ident[0] == 0x7f && elfhdr.e_ident[1] == 0x45 && elfhdr.e_ident[2] == 0x4c && elfhdr.e_ident[3] == 0x46) { PRINTF("ELF type: 0x%.4x\n", ELF_SHORT_H(elfhdr.e_type)); PRINTF("ELF machine: 0x%.4x\n", ELF_SHORT_H(elfhdr.e_machine)); PRINTF("ELF version: 0x%.8lx\n", ELF_LONG_H(elfhdr.e_version)); PRINTF("ELF sec = %d\n", ELF_SHORT_H(elfhdr.e_shnum)); if (ELF_SHORT_H(elfhdr.e_type) != ET_EXEC) { PRINTF("This ELF is not an executable.\n"); exit(1); } fclose(inputfs); readfile_elf(filename); return; } else { PRINTF("Not ELF file format.\n"); fseek(inputfs, 0, SEEK_SET); } } perror("identifyfile2"); fclose(inputfs); return; } /*---------------------------------------------------------------------------*/ /*!Load file to memory Loads file to memory starting at address startaddr and returns freemem. @param[in] filename File to load @param[in] startaddr Start address at which to load @param[in] virtphy_transl Virtual to physical transation table if required. Only used for microkernel simulation, and not used in Ork1sim at present (set to NULL) @return zero on success, negative on failure. */ /*---------------------------------------------------------------------------*/ uint32_t MemoryLoad::loadcode(char *filename, oraddr_t startaddr, oraddr_t virtphy_transl) { init_labels(); // jb transl_table = virtphy_transl; freemem = startaddr; /*printf ("* MemoryLoad::loadcode: filename %s startaddr=%" PRIxADDR " virtphy_transl=%" PRIxADDR "\n", filename, startaddr, virtphy_transl); */ identifyfile(filename); return (uint32_t) freemem; } /* From arch sim labels.c */ void MemoryLoad::init_labels() { int i; for (i = 0; i < LABELS_HASH_SIZE; i++) label_hash[i] = NULL; } void MemoryLoad::add_label(oraddr_t addr, char *name) { struct label_entry **tmp; tmp = &(label_hash[addr % LABELS_HASH_SIZE]); for (; *tmp; tmp = &((*tmp)->next)) ; *tmp = (label_entry *) malloc(sizeof(**tmp)); (*tmp)->name = (char *)malloc(strlen(name) + 1); (*tmp)->addr = addr; strcpy((*tmp)->name, name); (*tmp)->next = NULL; } struct label_entry *MemoryLoad::get_label(oraddr_t addr) { struct label_entry *tmp = label_hash[addr % LABELS_HASH_SIZE]; while (tmp) { if (tmp->addr == addr) return tmp; tmp = tmp->next; } return NULL; } struct label_entry *MemoryLoad::find_label(char *name) { int i; for (i = 0; i < LABELS_HASH_SIZE; i++) { struct label_entry *tmp = label_hash[i % LABELS_HASH_SIZE]; while (tmp) { if (strcmp(tmp->name, name) == 0) return tmp; tmp = tmp->next; } } return NULL; } /* Searches mem array for a particular label and returns label's address. If label does not exist, returns 0. */ oraddr_t MemoryLoad::eval_label(char *name) { struct label_entry *le; char *plus; char *minus; int positive_offset = 0; int negative_offset = 0; if ((plus = strchr(name, '+'))) { *plus = '\0'; positive_offset = atoi(++plus); } if ((minus = strchr(name, '-'))) { *minus = '\0'; negative_offset = atoi(++minus); } le = find_label(name); if (!le) return 0; return le->addr + positive_offset - negative_offset; }
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