367 lines
8.4 KiB
C
367 lines
8.4 KiB
C
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/********************************************
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da.c
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copyright 1991, Michael D. Brennan
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This is a source file for mawk, an implementation of
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the AWK programming language.
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Mawk is distributed without warranty under the terms of
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the GNU General Public License, version 2, 1991.
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********************************************/
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/* $Log: da.c,v $
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/* Revision 1.1.1.1 1993/03/21 09:45:37 cgd
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/* initial import of 386bsd-0.1 sources
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/*
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* Revision 5.1 91/12/05 07:55:45 brennan
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* 1.1 pre-release
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*
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*/
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/* da.c */
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/* disassemble code */
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/* This and new posix stuff won't fit in small model DOS */
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#include "mawk.h"
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#if ! SM_DOS
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#include "code.h"
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#include "bi_funct.h"
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#include "repl.h"
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#include "field.h"
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static char *PROTO(find_bi_name, (PF_CP) ) ;
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static struct sc {
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char op ; char *name ;
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} simple_code[] = {
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_STOP, "stop",
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FE_PUSHA, "fe_pusha",
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FE_PUSHI, "fe_pushi",
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A_TEST, "a_test",
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A_DEL , "a_del",
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A_CAT, "a_cat",
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_POP, "pop",
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_ADD, "add",
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_SUB, "sub",
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_MUL, "mul",
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_DIV, "div",
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_MOD, "mod",
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_POW, "pow",
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_NOT, "not",
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_UMINUS, "uminus",
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_UPLUS, "uplus",
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_DUP, "dup",
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_TEST, "test",
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_CAT, "cat",
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_ASSIGN, "assign",
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_ADD_ASG, "add_asg",
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_SUB_ASG, "sub_asg",
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_MUL_ASG, "mul_asg",
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_DIV_ASG, "div_asg",
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_MOD_ASG, "mod_asg",
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_POW_ASG, "pow_asg",
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NF_PUSHI, "nf_pushi",
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F_ASSIGN, "f_assign",
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F_ADD_ASG, "f_add_asg",
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F_SUB_ASG, "f_sub_asg",
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F_MUL_ASG, "f_mul_asg",
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F_DIV_ASG, "f_div_asg",
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F_MOD_ASG, "f_mod_asg",
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F_POW_ASG, "f_pow_asg",
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_POST_INC, "post_inc",
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_POST_DEC, "post_dec",
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_PRE_INC, "pre_inc",
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_PRE_INC, "pre_dec",
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F_POST_INC, "f_post_inc",
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F_POST_DEC, "f_post_dec",
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F_PRE_INC, "f_pre_inc",
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F_PRE_INC, "f_pre_dec",
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_EQ, "eq",
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_NEQ, "neq",
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_LT, "lt",
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_LTE, "lte",
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_GT, "gt",
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_GTE, "gte",
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_MATCH2, "match2",
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_EXIT, "exit",
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_EXIT0, "exit0",
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_NEXT, "next",
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_RET, "ret",
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_RET0, "ret0",
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_OMAIN, "omain",
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_JMAIN, "jmain",
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OL_GL, "ol_gl",
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OL_GL_NR, "ol_gl_nr",
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_HALT , (char *) 0 } ;
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void da(start, fp)
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INST *start ;
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FILE *fp ;
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{ CELL *cp ;
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register INST *p = start ;
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char *name ;
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while ( p->op != _HALT )
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{ /* print the relative code address (label) */
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fprintf(fp,"%03d ", p - start) ;
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switch( p++->op )
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{
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case _PUSHC :
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cp = (CELL *) p++->ptr ;
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switch( cp->type )
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{
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case C_RE :
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fprintf(fp,"pushc\t0x%lx\t/%s/\n" , (long) cp->ptr ,
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re_uncompile(cp->ptr) ) ;
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break ;
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case C_SPACE :
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fprintf(fp, "pushc\tspace split\n") ;
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break ;
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case C_SNULL :
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fprintf(fp, "pushc\tnull split\n") ;
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break ;
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case C_REPL :
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fprintf(fp, "pushc\trepl\t%s\n" ,
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repl_uncompile(cp) ) ;
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break ;
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case C_REPLV :
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fprintf(fp, "pushc\treplv\t%s\n" ,
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repl_uncompile(cp) ) ;
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break ;
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default :
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fprintf(fp,"pushc\tWEIRD\n") ; ;
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break ;
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}
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break ;
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case _PUSHD :
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fprintf(fp,"pushd\t%.6g\n" , *(double*)p++->ptr) ;
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break ;
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case _PUSHS :
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{ STRING *sval = (STRING *) p++->ptr ;
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fprintf(fp,"pushs\t\"%s\"\n" , sval->str) ;
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break ;
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}
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case _MATCH0 :
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case _MATCH1 :
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fprintf(fp, "match%d\t0x%lx\t/%s/\n" ,
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p[-1].op == _MATCH1, (long) p->ptr,
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re_uncompile(p->ptr) ) ;
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p++ ;
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break ;
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case _PUSHA :
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fprintf(fp,"pusha\t%s\n",
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reverse_find(ST_VAR, & p++ -> ptr)) ;
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break ;
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case _PUSHI :
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cp = (CELL *) p++ -> ptr ;
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if ( cp == field )
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fprintf(fp, "pushi\t$0\n") ;
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else
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if ( cp == &fs_shadow )
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fprintf(fp, "pushi\t@fs_shadow\n") ;
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else
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{
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if (
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#if LM_DOS
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SAMESEG(cp,field) &&
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#endif
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cp > NF && cp <= LAST_PFIELD )
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name = reverse_find(ST_FIELD, &cp) ;
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else
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name = reverse_find(ST_VAR, &cp) ;
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fprintf(fp, "pushi\t%s\n", name) ;
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}
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break ;
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case L_PUSHA :
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fprintf( fp, "l_pusha\t%d\n", p++->op) ;
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break ;
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case L_PUSHI :
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fprintf( fp, "l_pushi\t%d\n", p++->op) ;
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break ;
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case LAE_PUSHI :
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fprintf( fp, "lae_pushi\t%d\n", p++->op) ;
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break ;
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case LAE_PUSHA :
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fprintf( fp, "lae_pusha\t%d\n", p++->op) ;
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break ;
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case LA_PUSHA :
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fprintf( fp, "la_pusha\t%d\n", p++->op) ;
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break ;
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case F_PUSHA :
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cp = (CELL *) p++ -> ptr ;
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if (
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#if LM_DOS
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SAMESEG(cp,field) &&
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#endif
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cp >= NF && cp <= LAST_PFIELD )
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fprintf(fp, "f_pusha\t%s\n",
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reverse_find(ST_FIELD, &cp)) ;
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else
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fprintf(fp, "f_pusha\t$%d\n",
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field_addr_to_index(cp)) ;
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break ;
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case F_PUSHI :
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p++ ;
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fprintf(fp, "f_pushi\t$%d\n", p++ -> op) ;
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break ;
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case AE_PUSHA :
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fprintf(fp,"ae_pusha\t%s\n" ,
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reverse_find(ST_ARRAY, & p++->ptr) ) ;
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break ;
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case AE_PUSHI :
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fprintf(fp,"ae_pushi\t%s\n" ,
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reverse_find(ST_ARRAY, & p++->ptr)) ;
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break ;
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case A_PUSHA :
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fprintf(fp,"a_pusha\t%s\n" ,
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reverse_find(ST_ARRAY, & p++->ptr)) ;
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break ;
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case _PUSHINT :
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fprintf(fp,"pushint\t%d\n" , p++ -> op ) ;
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break ;
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case _BUILTIN :
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fprintf(fp,"%s\n" ,
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find_bi_name( (PF_CP) p++ -> ptr ) ) ;
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break ;
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case _PRINT :
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fprintf(fp,"%s\n",
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(PF_CP) p++ -> ptr == bi_printf
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? "printf" : "print") ;
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break ;
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case _JMP :
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case _JNZ :
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case _JZ :
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{ int j = (p-1)->op ;
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char *s = j == _JMP ? "jmp" :
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j == _JNZ ? "jnz" : "jz" ;
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fprintf(fp,"%s\t\t%03d\n" , s ,
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(p - start) + p->op ) ;
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p++ ;
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break ;
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}
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case SET_ALOOP :
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fprintf(fp, "s_aloop\t%03d\n", p + p->op - start ) ;
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p++ ;
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break ;
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case ALOOP :
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fprintf(fp,"aloop\t%03d\n", p-start+p->op) ;
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p += 2 ;
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break ;
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case _CALL :
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fprintf(fp, "call\t%s\t%d\n",
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((FBLOCK*)p->ptr)->name , p[1].op) ;
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p += 2 ;
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break ;
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case _RANGE :
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fprintf(fp, "range\t%03d %03d %03d\n",
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/* label for pat2, action, follow */
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p - start + p[1].op ,
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p - start + p[2].op ,
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p - start + p[3].op ) ;
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p += 4 ;
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break ;
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default :
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{
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struct sc *q = simple_code ;
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int k = (p-1)->op ;
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while ( q->op != _HALT && q->op != k ) q++ ;
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fprintf(fp, "%s\n",
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q->op != _HALT ? q->name : "bad instruction") ;
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}
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break ;
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}
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}
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}
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static struct {
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PF_CP action ;
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char *name ;
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} special_cases[] = {
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bi_split, "split",
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bi_match, "match",
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bi_getline,"getline",
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bi_sub, "sub",
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bi_gsub , "gsub",
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(PF_CP) 0, (char *) 0 } ;
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static char *find_bi_name( p )
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PF_CP p ;
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{ BI_REC *q ;
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int i ;
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for( q = bi_funct ; q->name ; q++ )
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if ( q->fp == p ) /* found */
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return q->name ;
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/* next check some special cases */
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for( i = 0 ; special_cases[i].action ; i++)
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if ( special_cases[i].action == p )
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return special_cases[i].name ;
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return "unknown builtin" ;
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}
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static struct fdump {
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struct fdump *link ;
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FBLOCK *fbp ;
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} *fdump_list ; /* linked list of all user functions */
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void add_to_fdump_list( fbp )
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FBLOCK *fbp ;
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{ struct fdump *p = (struct fdump *)zmalloc(sizeof(struct fdump)) ;
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p->fbp = fbp ;
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p->link = fdump_list ; fdump_list = p ;
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}
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void fdump()
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{
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register struct fdump *p, *q = fdump_list ;
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while ( p = q )
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{ q = p->link ;
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fprintf(stderr, "function %s\n" , p->fbp->name) ;
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da(p->fbp->code, stderr) ;
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zfree(p, sizeof(struct fdump)) ;
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}
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}
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#endif /* SM_DOS */
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