| /* $Id$ |
| * Bytecode internal structures header file |
| * |
| * Copyright (C) 2001 Peter Johnson |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef YASM_BC_INT_H |
| #define YASM_BC_INT_H |
| |
| typedef struct yasm_bytecode_callback { |
| void (*destroy) (/*@only@*/ void *contents); |
| void (*print) (const void *contents, FILE *f, int indent_level); |
| void (*finalize) (yasm_bytecode *bc, yasm_bytecode *prev_bc); |
| yasm_bc_resolve_flags (*resolve) |
| (yasm_bytecode *bc, int save, yasm_calc_bc_dist_func calc_bc_dist); |
| int (*tobytes) (yasm_bytecode *bc, unsigned char **bufp, void *d, |
| yasm_output_value_func output_value, |
| /*@null@*/ yasm_output_reloc_func output_reloc); |
| } yasm_bytecode_callback; |
| |
| struct yasm_bytecode { |
| /*@reldef@*/ STAILQ_ENTRY(yasm_bytecode) link; |
| |
| /*@null@*/ const yasm_bytecode_callback *callback; |
| |
| /* Pointer to section containing bytecode; NULL if not part of a section. */ |
| /*@dependent@*/ /*@null@*/ yasm_section *section; |
| |
| /* number of times bytecode is repeated, NULL=1. */ |
| /*@only@*/ /*@null@*/ yasm_expr *multiple; |
| |
| unsigned long len; /* total length of entire bytecode (including |
| multiple copies), 0 if unknown */ |
| |
| /* where it came from */ |
| unsigned long line; |
| |
| /* other assembler state info */ |
| unsigned long offset; /* 0 if unknown */ |
| |
| /* storage for optimizer flags */ |
| unsigned long opt_flags; |
| |
| /* NULL-terminated array of labels that point to this bytecode (as the |
| * bytecode previous to the label). NULL if no labels point here. */ |
| /*@null@*/ yasm_symrec **symrecs; |
| |
| /* bytecode-type-specific data (type identified by callback) */ |
| void *contents; |
| }; |
| |
| /** Create a bytecode of any specified type. |
| * \param callback bytecode callback functions, if NULL, creates empty |
| * bytecode (may not be resolved or output) |
| * \param contents type-specific data |
| * \param line virtual line (from yasm_linemap) |
| * \return Newly allocated bytecode of the specified type. |
| */ |
| /*@only@*/ yasm_bytecode *yasm_bc_create_common |
| (/*@null@*/ const yasm_bytecode_callback *callback, |
| /*@only@*/ /*@null@*/ void *contents, unsigned long line); |
| |
| /** Transform a bytecode of any type into a different type. |
| * \param bc bytecode to transform |
| * \param callback new bytecode callback function |
| * \param contents new type-specific data |
| */ |
| void yasm_bc_transform(yasm_bytecode *bc, |
| const yasm_bytecode_callback *callback, |
| void *contents); |
| |
| /** Common bytecode callback finalize function, for where no finalization |
| * is ever required for this type of bytecode. |
| */ |
| void yasm_bc_finalize_common(yasm_bytecode *bc, yasm_bytecode *prev_bc); |
| |
| #define yasm_bc__next(x) STAILQ_NEXT(x, link) |
| |
| #endif |