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