/[gxemul]/upstream/0.4.4/src/useremul.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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trunk/src/useremul.c revision 12 by dpavlin, Mon Oct 8 16:18:38 2007 UTC upstream/0.4.4/src/useremul.c revision 35 by dpavlin, Mon Oct 8 16:21:26 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2004-2005  Anders Gavare.  All rights reserved.   *  Copyright (C) 2004-2007  Anders Gavare.  All rights reserved.
3   *   *
4   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
5   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: useremul.c,v 1.62 2005/08/16 06:49:26 debug Exp $   *  $Id: useremul.c,v 1.74 2007/02/10 14:04:51 debug Exp $
29   *   *
30   *  Userland (syscall) emulation.   *  Userland (syscall) emulation.
31   *   *
32   *  TODO:   *  TODO:
33   *   *
34   *      NetBSD/pmax:   *      environment passing for most emulation modes
35   *              environment passing   *
36   *              more syscalls   *      implement more syscalls
37   *   *
38   *      32-bit vs 64-bit problems? MIPS n32, o32, n64?   *      32-bit vs 64-bit problems? MIPS n32, o32, n64?
39   *   *
40   *      Dynamic ELFs?   *      Dynamic ELFs?
41   *   *
42   *      Try to prefix "/emul/mips/" or similar to all filenames,   *      Try to prefix "/emul/mips/" or similar to all filenames,
43   *              and only if that fails, try the given filename   *              and only if that fails, try the given filename.
44     *              Read this setting from an environment variable, and only
45     *              if there is none, fall back to hardcoded string.
46   *   *
47   *      Automagic errno translation?   *      Automagic errno translation!
48   *   *
49   *      Memory allocation? mmap etc.   *      Memory allocation? mmap, munmap, mprotect, etc.
50     *              mprotect = unmap in dyntrans...
51   *   *
52   *      File descriptor (0,1,2) assumptions?   *      File descriptor (0,1,2) assumptions? Find and fix these?
53   *   *
54   *   *
55   *  This module needs more cleanup.   *  This module needs more cleanup.
56   *  -------------------------------   *  -------------------------------
57   *   *
58   *   *
59   *  NOTE:  This module (useremul.c) is just a quick hack to see if   *  NOTE:  This module (useremul.c) is just a quick hack so far, to see if
60   *         userland emulation works at all.   *         userland emulation works at all. It only works for Hello World-
61     *         style programs compiled for FreeBSD/alpha or NetBSD/mips.
62   */   */
63    
64  #include <errno.h>  #include <errno.h>
# Line 232  void useremul__netbsd_setup(struct cpu * Line 236  void useremul__netbsd_setup(struct cpu *
236                  }                  }
237                  break;                  break;
238    
239            case ARCH_ALPHA:
240                    debug("useremul__netbsd_setup(): ALPHA: TODO\n");
241                    break;
242    
243          case ARCH_ARM:          case ARCH_ARM:
244                  debug("useremul__netbsd_setup(): ARM: TODO\n");                  debug("useremul__netbsd_setup(): ARM: TODO\n");
245                  break;                  break;
# Line 244  void useremul__netbsd_setup(struct cpu * Line 252  void useremul__netbsd_setup(struct cpu *
252    
253                  break;                  break;
254    
255          case ARCH_X86:          case ARCH_SH:
256                  debug("useremul__netbsd_setup(): X86: TODO\n");                  debug("useremul__netbsd_setup(): SH: TODO\n");
   
257                  break;                  break;
258    
259          default:          default:
# Line 360  static unsigned char *get_userland_buf(s Line 367  static unsigned char *get_userland_buf(s
367          uint64_t baseaddr, uint64_t len)          uint64_t baseaddr, uint64_t len)
368  {  {
369          unsigned char *charbuf;          unsigned char *charbuf;
370          ssize_t i;          size_t i;
371    
372          charbuf = malloc(len);          charbuf = malloc(len);
373          if (charbuf == NULL) {          if (charbuf == NULL) {
# Line 695  static void useremul__freebsd(struct cpu Line 702  static void useremul__freebsd(struct cpu
702          case 58:res = useremul_readlink(cpu, &err, arg0, arg1, arg2);          case 58:res = useremul_readlink(cpu, &err, arg0, arg1, arg2);
703                  break;                  break;
704    
705            case 73:/* munmap. TODO */
706                    res = 1;
707                    break;
708    
709          case 117:res = useremul_getrusage(cpu, &err, arg0, arg1);          case 117:res = useremul_getrusage(cpu, &err, arg0, arg1);
710                  break;                  break;
711    
# Line 828  static void useremul__netbsd(struct cpu Line 839  static void useremul__netbsd(struct cpu
839                  arg3 = cpu->cd.ppc.gpr[6];                  arg3 = cpu->cd.ppc.gpr[6];
840                  /*  TODO:  More arguments? Stack arguments?  */                  /*  TODO:  More arguments? Stack arguments?  */
841                  break;                  break;
842    
843            case ARCH_ARM:
844                    sysnr = code & 0xfffff;
845                    arg0 = cpu->cd.arm.r[0];
846                    arg1 = cpu->cd.arm.r[1];
847                    arg2 = cpu->cd.arm.r[2];
848                    arg3 = cpu->cd.arm.r[3];
849                    /*  TODO:  More arguments? Stack arguments?  */
850                    break;
851    
852            default:fatal("netbsd syscall for this arch: TODO\n");
853                    exit(1);
854          }          }
855    
856          /*          /*
857           *  NOTE: The following code should not be CPU arch dependant!           *  NOTE/TODO: The following code should not be CPU arch dependent!
          *  (TODO)  
858           */           */
859    
860          switch (sysnr) {          switch (sysnr) {
# Line 1187  static void useremul__netbsd(struct cpu Line 1209  static void useremul__netbsd(struct cpu
1209    
1210    
1211          switch (cpu->machine->arch) {          switch (cpu->machine->arch) {
1212            case ARCH_ARM:
1213                    /*  NetBSD/arm return values:  */
1214                    cpu->cd.arm.r[0] = result_low;
1215                    cpu->cd.arm.cpsr &= ~ARM_FLAG_C;
1216                    if (error_flag) {
1217                            cpu->cd.arm.cpsr |= ARM_FLAG_C;
1218                            cpu->cd.arm.r[0] = error_code;
1219                    }
1220                    if (result_high_set)
1221                            cpu->cd.arm.r[1] = result_high;
1222                    cpu->cd.arm.flags = cpu->cd.arm.cpsr >> 28;
1223                    break;
1224          case ARCH_MIPS:          case ARCH_MIPS:
1225                  /*                  /*
1226                   *  NetBSD/mips return values:                   *  NetBSD/mips return values:
# Line 1685  static void add_useremul(char *name, int Line 1719  static void add_useremul(char *name, int
1719  void useremul_list_emuls(void)  void useremul_list_emuls(void)
1720  {  {
1721          struct syscall_emul *sep;          struct syscall_emul *sep;
1722          int iadd = 8;          int iadd = DEBUG_INDENTATION * 2;
1723    
1724          sep = first_syscall_emul;          sep = first_syscall_emul;
1725    
# Line 1723  void useremul_init(void) Line 1757  void useremul_init(void)
1757          add_useremul("Ultrix", ARCH_MIPS, "R3000",          add_useremul("Ultrix", ARCH_MIPS, "R3000",
1758              useremul__ultrix, useremul__ultrix_setup);              useremul__ultrix, useremul__ultrix_setup);
1759    
1760            add_useremul("NetBSD/sh", ARCH_SH, "SH4",
1761                useremul__netbsd, useremul__netbsd_setup);
1762    
1763          add_useremul("NetBSD/powerpc", ARCH_PPC, "PPC750",          add_useremul("NetBSD/powerpc", ARCH_PPC, "PPC750",
1764              useremul__netbsd, useremul__netbsd_setup);              useremul__netbsd, useremul__netbsd_setup);
1765    
1766          add_useremul("NetBSD/pmax", ARCH_MIPS, "R3000",          add_useremul("NetBSD/pmax", ARCH_MIPS, "R3000",
1767              useremul__netbsd, useremul__netbsd_setup);              useremul__netbsd, useremul__netbsd_setup);
1768    
1769          add_useremul("NetBSD/arm", ARCH_ARM, "ARM",          add_useremul("NetBSD/arm", ARCH_ARM, "SA1110",
1770              useremul__netbsd, useremul__netbsd_setup);              useremul__netbsd, useremul__netbsd_setup);
1771    
1772          add_useremul("NetBSD/amd64", ARCH_X86, "AMD64",          add_useremul("NetBSD/alpha", ARCH_ALPHA, "Alpha",
1773              useremul__netbsd, useremul__netbsd_setup);              useremul__netbsd, useremul__netbsd_setup);
1774    
1775          add_useremul("Linux/PPC64", ARCH_PPC, "PPC970",          add_useremul("Linux/PPC64", ARCH_PPC, "PPC970",
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