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src/tcc.h  view on Meta::CPAN

    int sh_name;             /* elf section name (only used during output) */
    int sh_num;              /* elf section number */
    int sh_type;             /* elf section type */
    int sh_flags;            /* elf section flags */
    int sh_info;             /* elf section info */
    int sh_addralign;        /* elf section alignment */
    int sh_entsize;          /* elf entry size */
    unsigned long sh_size;   /* section size (only used during output) */
    addr_t sh_addr;          /* address at which the section is relocated */
    unsigned long sh_offset; /* file offset */
    int nb_hashed_syms;      /* used to resize the hash table */
    struct Section *link;    /* link to another section */
    struct Section *reloc;   /* corresponding section for relocation, if any */
    struct Section *hash;     /* hash table for symbols */
    struct Section *next;
    char name[1];           /* section name */
} Section;

typedef struct DLLReference {
    int level;
    void *handle;
    char name[1];
} DLLReference;

/* GNUC attribute definition */
typedef struct AttributeDef {
    unsigned
      func_call     : 3, /* calling convention (0..5), see below */
      aligned       : 5, /* alignement (0..16) */
      packed        : 1,
      func_export   : 1,
      func_import   : 1,
      func_args     : 5,
      func_proto    : 1,
      mode          : 4,
      weak          : 1,
      fill          : 10;
    struct Section *section;
    int alias_target;    /* token */
} AttributeDef;

/* gr: wrappers for casting sym->r for other purposes */
#define FUNC_CALL(r) (((AttributeDef*)&(r))->func_call)
#define FUNC_EXPORT(r) (((AttributeDef*)&(r))->func_export)
#define FUNC_IMPORT(r) (((AttributeDef*)&(r))->func_import)
#define FUNC_ARGS(r) (((AttributeDef*)&(r))->func_args)
#define FUNC_PROTO(r) (((AttributeDef*)&(r))->func_proto)
#define FUNC_ALIGN(r) (((AttributeDef*)&(r))->aligned)
#define FUNC_PACKED(r) (((AttributeDef*)&(r))->packed)
#define ATTR_MODE(r)  (((AttributeDef*)&(r))->mode)
#define INT_ATTR(ad) (*(int*)(ad))

/* -------------------------------------------------- */

#define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
#define SYM_FIELD      0x20000000 /* struct/union field symbol space */
#define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */

#define VLA_SP_LOC_SET     0x01 /* Location of SP on stack has been allocated */
#define VLA_SP_SAVED       0x02 /* SP has been saved to slot already */
#define VLA_NEED_NEW_FRAME 0x04 /* Needs new frame for next VLA */
#define VLA_IN_SCOPE       0x08 /* One or more VLAs are in scope */
#define VLA_SCOPE_FLAGS    (VLA_SP_SAVED|VLA_NEED_NEW_FRAME|VLA_IN_SCOPE) /* Flags which are saved and restored upon entering and exiting a block */

/* stored in 'Sym.c' field */
#define FUNC_NEW       1 /* ansi function prototype */
#define FUNC_OLD       2 /* old function prototype */
#define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */

/* stored in 'Sym.r' field */
#define FUNC_CDECL     0 /* standard c call */
#define FUNC_STDCALL   1 /* pascal c call */
#define FUNC_FASTCALL1 2 /* first param in %eax */
#define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
#define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
#define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */

/* field 'Sym.t' for macros */
#define MACRO_OBJ      0 /* object like macro */
#define MACRO_FUNC     1 /* function like macro */

/* field 'Sym.r' for C labels */
#define LABEL_DEFINED  0 /* label is defined */
#define LABEL_FORWARD  1 /* label is forward defined */
#define LABEL_DECLARED 2 /* label is declared but never used */

/* type_decl() types */
#define TYPE_ABSTRACT  1 /* type without variable */
#define TYPE_DIRECT    2 /* type with variable */

#define IO_BUF_SIZE 8192

typedef struct BufferedFile {
    uint8_t *buf_ptr;
    uint8_t *buf_end;
    int fd;
    struct BufferedFile *prev;
    int line_num;    /* current line number - here to simplify code */
    int ifndef_macro;  /* #ifndef macro / #endif search */
    int ifndef_macro_saved; /* saved ifndef_macro */
    int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
    char filename[1024];    /* filename */
    unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */
} BufferedFile;

#define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
#define CH_EOF   (-1)   /* end of file */

/* parsing state (used to save parser state to reparse part of the
   source several times) */
typedef struct ParseState {
    const int *macro_ptr;
    int line_num;
    int tok;
    CValue tokc;
} ParseState;

/* used to record tokens */
typedef struct TokenString {
    int *str;
    int len;