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[/] [or1k/] [tags/] [nog_patch_60/] [or1ksim/] [cpu/] [common/] [parse.c] - Rev 1353
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/* parce.c -- Architecture independent load Copyright (C) 1999 Damjan Lampret, lampret@opencores.org This file is part of 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 2 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, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <stdio.h> #include <ctype.h> #include <string.h> #include <stdlib.h> #include "config.h" #ifdef HAVE_INTTYPES_H #include <inttypes.h> #endif #include "port.h" #include "arch.h" #include "abstract.h" #include "dmmu.h" #include "coff.h" #include "elf.h" #include "debug_unit.h" #include "opcode/or32.h" #include "parse.h" #include "sim-config.h" #include "labels.h" #include "debug.h" #define MEMORY_LEN 0x100000000 #define MAXLINE_LEN 18000 /* Whether to do immediate statistics */ #define IMM_STATS 0 extern char *disassembled; /* Unused mem memory marker. It is used when allocating program and data memory during parsing */ unsigned int freemem; /* Translation table provided by microkernel. Only used if simulating microkernel. */ static oraddr_t transl_table; /* Used to signal whether during loading of programs a translation fault occured. */ static unsigned long transl_error; char * stripwhite (string) char *string; { register char *s, *t; for (s = string; whitespace (*s); s++) ; if (*s == 0) return (s); t = s + strlen (s) - 1; while (t > s && whitespace (*t)) t--; *++t = '\0'; return s; } /* This function is very similar to strncpy, except it null terminates the string */ char *strstrip (char *dst, const char *src, int n) { strncpy (dst, src, n); *(dst + n) = '\0'; return dst; } /* Used only by the simulator loader to translate logical addresses into physical. If loadcode() is called with valid virtphy_transl pointer to a table of translations then translate() performs translation otherwise phy address is equal to logical. */ static oraddr_t translate(oraddr_t laddr,int* breakpoint) { int i; /* No translation (i.e. when loading kernel into simulator) */ /* PRINTF("transl_table=%x laddr=%x\n", transl_table, laddr); PRINTF("laddr=%x\n", laddr);*/ if (transl_table == 0) return laddr; /* Try to find our translation in the table. */ for(i = 0; i < (MEMORY_LEN / PAGE_SIZE) * 16; i += 16) if ((laddr & ~(PAGE_SIZE - 1)) == evalsim_mem32(transl_table + i)) { setsim_mem32(transl_table + i + 8, -2); /* Page modified */ PRINTF("found paddr=%"PRIx32"\n", evalsim_mem32(transl_table + i + 4) | (laddr & (PAGE_SIZE - 1))); return (oraddr_t)evalsim_mem32(transl_table + i + 4) | (laddr & (oraddr_t)(PAGE_SIZE - 1)); } /* Allocate new phy page for us. */ for(i = 0; i < (MEMORY_LEN / PAGE_SIZE) * 16; i += 16) if (evalsim_mem32(transl_table + i + 8) == 0) { setsim_mem32(transl_table + i, laddr & ~(PAGE_SIZE - 1)); /* VPN */ setsim_mem32(transl_table + i + 4, (i/16) * PAGE_SIZE); /* PPN */ setsim_mem32(transl_table + i + 8, -2); /* Page modified */ PRINTF("newly allocated ppn=%"PRIx32"\n", evalsim_mem32(transl_table + i + 4)); PRINTF("newly allocated .ppn=%"PRIxADDR"\n", transl_table + i + 4); PRINTF("newly allocated ofs=%"PRIxADDR"\n", (laddr & (PAGE_SIZE - 1))); PRINTF("newly allocated paddr=%"PRIx32"\n", evalsim_mem32(transl_table + i + 4) | (laddr & (PAGE_SIZE - 1))); return (oraddr_t)evalsim_mem32(transl_table + i + 4) | (laddr & (oraddr_t)(PAGE_SIZE - 1)); } /* If we come this far then all phy memory is used and we can't find our page nor allocate new page. */ transl_error = 1; PRINTF("can't translate %"PRIxADDR"\n", laddr); exit(1); return -1; } #if IMM_STATS int bcnt[33][3] = {0}; int bsum[3] = {0}; unsigned long movhi = 0; int bits (unsigned long val) { int i = 1; if (!val) return 0; while (val != 0 && (signed long)val != -1) {i++; val = (signed long)val >> 1;} return i; } void 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 /* Replaced several calls to translate(freemem) with vaddr */ /* Added new mode execution code */ /* Changed parameters so address can be passed as argument */ void addprogram(oraddr_t address, uint32_t insn, int* breakpoint) { int vaddr = (!runtime.sim.filename) ? translate(address,breakpoint) : translate(freemem,breakpoint); setsim_mem32 (vaddr, insn); #if IMM_STATS check_insn (insn); #endif if(runtime.sim.filename) freemem += insn_len (insn_decode (insn)); } /* Load big-endian COFF file. */ void readfile_coff(char *filename, short sections) { FILE *inputfs; char inputbuf[4]; uint32_t insn; signed long 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(struct COFF_filehdr), 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--) { long scnhdr_pos = sizeof(struct COFF_filehdr) + 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); #if 0 /* A couple of sanity checks. */ if (translate(COFF_LONG_H(coffscnhdr.s_vaddr),&breakpoint) < MEMORY_START) { PRINTF("Section %s starts out of ", coffscnhdr.s_name); PRINTF("memory (at %x)\n", COFF_LONG_H(coffscnhdr.s_vaddr)); exit(1); } if (translate(COFF_LONG_H(coffscnhdr.s_vaddr) + sectsize,&breakpoint) > MEMORY_START + MEMORY_LEN) { PRINTF("Section %s ends out of ", coffscnhdr.s_name); PRINTF("memory.\n"); exit(1); } #endif #if 0 if (++firstthree == 1 && strcmp(coffscnhdr.s_name, ".text") != 0) { PRINTF("First section should be .text (%s instead)\n", coffscnhdr.s_name); exit(1); } if (firstthree == 2 && strcmp(coffscnhdr.s_name, ".data") != 0) { PRINTF("Second section should be .data (%s instead)\n", coffscnhdr.s_name); exit(1); } if (firstthree == 3 && strcmp(coffscnhdr.s_name, ".bss") != 0) { PRINTF("Third section should be .bss (%s instead)\n", coffscnhdr.s_name); exit(1); } #else ++firstthree; #endif /* loading section */ freemem = COFF_LONG_H(coffscnhdr.s_paddr); debug(2,"Starting to load at 0x%x\n", freemem); 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)); if (len == 2) { fseek(inputfs, -2, SEEK_CUR); debug(8,"readfile_coff: %lx 0x%x \n", sectsize, insn >> 16); } else debug(8,"readfile_coff: %lx 0x%x \n", sectsize, insn); addprogram (freemem, insn, &breakpoint); 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; } /* Load symbols from big-endian COFF file. */ void readsyms_coff(char *filename, unsigned long symptr, long syms) { FILE *inputfs; struct COFF_syment coffsymhdr; int count = 0; long 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 0 /* If not important or not in text, skip. */ if(COFF_SHORT_H(coffsymhdr.e_type) & COFF_N_TMASK & COFF_STYP_TEXT) { #endif if (*((unsigned long *)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); debug(8, "[%i] Symbol: %s,", count++, coffsymhdr.e.e_name); } else { long 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]); debug(8, "[%i] Symbol: %s,", count++, &tmp[0]); } fseek(inputfs, fpos, SEEK_SET); } debug(9, " val: 0x%.8lx,", COFF_LONG_H(coffsymhdr.e_value)); debug(9, " type: %x, %x, auxs: %i\n", COFF_SHORT_H(coffsymhdr.e_type), *((unsigned short *)coffsymhdr.e_type), n); } 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; } void readfile_elf(char *filename) { FILE *inputfs; struct elf32_hdr elfhdr; struct elf32_phdr *elf_phdata; struct elf32_shdr *elf_spnt, *elf_shdata; struct elf32_sym *sym_tbl = (struct elf32_sym *)0; unsigned long syms = 0; char *str_tbl = (char *)0; char *s_str = (char *)0; int breakpoint = 0; unsigned long inputbuf; unsigned long 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((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((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 (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%.8lx,", 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"); exit(1); } while (sectsize > 0 && (len = fread(&inputbuf, sizeof(inputbuf), 1, inputfs))) { insn = ELF_LONG_H(inputbuf); len = insn_len (insn_decode (insn)); if (len == 2) { fseek(inputfs, -2, SEEK_CUR); debug(8, "readfile_elf: %x 0x%x \n", sectsize, insn >> 16); } else debug(8, "readfile_elf: %x 0x%x \n", sectsize, insn); addprogram (freemem, insn, &breakpoint); sectsize -= len; } } } 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)]); debug (8, "%08lx(%s): %x %x %x\n", ELF_LONG_H(sym_tbl[i].st_value), &str_tbl[ELF_LONG_H(sym_tbl[i].st_name)], sym_tbl[i].st_info, sym_tbl[i].st_other, ELF_SHORT_H(sym_tbl[i].st_shndx)); } i++; } } } /* Identify file type and call appropriate readfile_X routine. It only handles orX-coff-big executables at the moment. */ void identifyfile(char *filename) { FILE *inputfs; struct COFF_filehdr 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) { unsigned long 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%.2lx\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; } /* Loads file to memory starting at address startaddr and returns freemem. */ unsigned long loadcode(char *filename, oraddr_t startaddr, oraddr_t virtphy_transl) { int breakpoint = 0; transl_error = 0; transl_table = virtphy_transl; freemem = startaddr; PRINTF("loadcode: filename %s startaddr=%"PRIxADDR" virtphy_transl=%"PRIxADDR"\n", filename, startaddr, virtphy_transl); identifyfile(filename); #if IMM_STATS { int i = 0, a = 0, b = 0, c = 0; PRINTF ("index:arith/branch/jump\n"); for (i = 0; i < 33; i++) PRINTF ("%2i:\t%3.0f%% / %3.0f%%/ %3.0f%%\t%5i / %5i / %5i\n", i, 100.* (a += bcnt[i][0])/bsum[0], 100.* (b += bcnt[i][1])/bsum[1], 100.* (c += bcnt[i][2])/bsum[2], bcnt[i][0], bcnt[i][1], bcnt[i][2]); PRINTF ("\nsum %i %i %i\n", bsum[0], bsum[1], bsum[2]); } #endif if (transl_error) return -1; else return translate(freemem,&breakpoint); }
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