src/buildvm.h

   1 /*
   2 ** LuaJIT VM builder.
   3 ** Copyright (C) 2005-2010 Mike Pall. See Copyright Notice in luajit.h
   4 */
   5
   6 #ifndef _BUILDVM_H
   7 #define _BUILDVM_H
   8
   9 #include <sys/types.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <errno.h>
  14
  15 #include "lj_def.h"
  16 #include "lj_arch.h"
  17
  18 /* Hardcoded limits. Increase as needed. */
  19 #define BUILD_MAX_RELOC         100     /* Max. number of relocations. */
  20 #define BUILD_MAX_FOLD          4096    /* Max. number of fold rules. */
  21
  22 /* Prefix for scanned library definitions. */
  23 #define LIBDEF_PREFIX           "LJLIB_"
  24
  25 /* Prefix for scanned fold definitions. */
  26 #define FOLDDEF_PREFIX          "LJFOLD"
  27
  28 /* Prefixes for generated labels. */
  29 #define LABEL_PREFIX            "lj_"
  30 #define LABEL_PREFIX_BC         LABEL_PREFIX "BC_"
  31 #define LABEL_PREFIX_FF         LABEL_PREFIX "ff_"
  32 #define LABEL_PREFIX_CF         LABEL_PREFIX "cf_"
  33 #define LABEL_PREFIX_FFH        LABEL_PREFIX "ffh_"
  34 #define LABEL_PREFIX_LIBCF      LABEL_PREFIX "lib_cf_"
  35 #define LABEL_PREFIX_LIBINIT    LABEL_PREFIX "lib_init_"
  36
  37 /* Extra labels. */
  38 #define LABEL_ASM_BEGIN         LABEL_PREFIX "vm_asm_begin"
  39 #define LABEL_OP_OFS            LABEL_PREFIX "vm_op_ofs"
  40
  41 /* Forward declaration. */
  42 struct dasm_State;
  43
  44 /* Build modes. */
  45 #if LJ_TARGET_X86ORX64
  46 #define BUILDDEFX(_)    _(peobj)
  47 #else
  48 #define BUILDDEFX(_)
  49 #endif
  50
  51 #define BUILDDEF(_) \
  52   _(elfasm) _(coffasm) _(machasm) BUILDDEFX(_) _(raw) \
  53   _(ffdef) _(libdef) _(recdef) _(vmdef) \
  54   _(folddef)
  55
  56 typedef enum {
  57 #define BUILDENUM(name)         BUILD_##name,
  58 BUILDDEF(BUILDENUM)
  59 #undef BUILDENUM
  60   BUILD__MAX
  61 } BuildMode;
  62
  63 /* Code relocation. */
  64 typedef struct BuildReloc {
  65   int32_t ofs;
  66   int sym;
  67   int type;
  68 } BuildReloc;
  69
  70 /* Build context structure. */
  71 typedef struct BuildCtx {
  72   /* DynASM state pointer. Should be first member. */
  73   struct dasm_State *D;
  74   /* Parsed command line. */
  75   BuildMode mode;
  76   FILE *fp;
  77   const char *outname;
  78   char **args;
  79   /* Code and symbols generated by DynASM. */
  80   uint8_t *code;
  81   size_t codesz;
  82   int npc, nglob, nsym, nreloc;
  83   void **glob;
  84   int *perm;
  85   int32_t *sym_ofs;
  86   /* Strings generated by DynASM. */
  87   const char *const *extnames;
  88   const char *const *globnames;
  89   const char *dasm_ident;
  90   const char *dasm_arch;
  91   /* Relocations. */
  92   BuildReloc reloc[BUILD_MAX_RELOC];
  93 } BuildCtx;
  94
  95 extern void owrite(BuildCtx *ctx, const void *ptr, size_t sz);
  96 extern void emit_asm(BuildCtx *ctx);
  97 extern void emit_peobj(BuildCtx *ctx);
  98 extern void emit_lib(BuildCtx *ctx);
  99 extern void emit_fold(BuildCtx *ctx);
 100
 101 extern const char *const bc_names[];
 102 extern const char *const ir_names[];
 103 extern const char *const irfpm_names[];
 104 extern const char *const irfield_names[];
 105 extern const char *const ircall_names[];
 106
 107 #endif