| /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ |
| /* Assembler interface for targets using CGEN. -*- C -*- |
| CGEN: Cpu tools GENerator |
| |
| THIS FILE IS MACHINE GENERATED WITH CGEN. |
| - the resultant file is machine generated, cgen-asm.in isn't |
| |
| Copyright (C) 1996-2024 Free Software Foundation, Inc. |
| |
| This file is part of libopcodes. |
| |
| This library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| It is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| |
| /* ??? Eventually more and more of this stuff can go to cpu-independent files. |
| Keep that in mind. */ |
| |
| #include "sysdep.h" |
| #include <stdio.h> |
| #include "ansidecl.h" |
| #include "bfd.h" |
| #include "symcat.h" |
| #include "mt-desc.h" |
| #include "mt-opc.h" |
| #include "opintl.h" |
| #include "xregex.h" |
| #include "libiberty.h" |
| #include "safe-ctype.h" |
| |
| #undef min |
| #define min(a,b) ((a) < (b) ? (a) : (b)) |
| #undef max |
| #define max(a,b) ((a) > (b) ? (a) : (b)) |
| |
| static const char * parse_insn_normal |
| (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); |
| |
| /* -- assembler routines inserted here. */ |
| |
| /* -- asm.c */ |
| /* Range checking for signed numbers. Returns 0 if acceptable |
| and 1 if the value is out of bounds for a signed quantity. */ |
| |
| static int |
| signed_out_of_bounds (long val) |
| { |
| if ((val < -32768) || (val > 32767)) |
| return 1; |
| return 0; |
| } |
| |
| static const char * |
| parse_loopsize (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| void *arg) |
| { |
| signed long * valuep = (signed long *) arg; |
| const char *errmsg; |
| bfd_reloc_code_real_type code = BFD_RELOC_NONE; |
| enum cgen_parse_operand_result result_type; |
| bfd_vma value; |
| |
| /* Is it a control transfer instructions? */ |
| if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE) |
| { |
| code = BFD_RELOC_MT_PCINSN8; |
| errmsg = cgen_parse_address (cd, strp, opindex, code, |
| & result_type, & value); |
| *valuep = value; |
| return errmsg; |
| } |
| |
| abort (); |
| } |
| |
| static const char * |
| parse_imm16 (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| void *arg) |
| { |
| signed long * valuep = (signed long *) arg; |
| const char *errmsg; |
| enum cgen_parse_operand_result result_type; |
| bfd_reloc_code_real_type code = BFD_RELOC_NONE; |
| bfd_vma value; |
| |
| /* Is it a control transfer instructions? */ |
| if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O) |
| { |
| code = BFD_RELOC_16_PCREL; |
| errmsg = cgen_parse_address (cd, strp, opindex, code, |
| & result_type, & value); |
| if (errmsg == NULL) |
| { |
| if (signed_out_of_bounds (value)) |
| errmsg = _("Operand out of range. Must be between -32768 and 32767."); |
| } |
| *valuep = value; |
| return errmsg; |
| } |
| |
| /* If it's not a control transfer instruction, then |
| we have to check for %OP relocating operators. */ |
| if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L) |
| ; |
| else if (strncmp (*strp, "%hi16", 5) == 0) |
| { |
| *strp += 5; |
| code = BFD_RELOC_HI16; |
| } |
| else if (strncmp (*strp, "%lo16", 5) == 0) |
| { |
| *strp += 5; |
| code = BFD_RELOC_LO16; |
| } |
| |
| /* If we found a %OP relocating operator, then parse it as an address. |
| If not, we need to parse it as an integer, either signed or unsigned |
| depending on which operand type we have. */ |
| if (code != BFD_RELOC_NONE) |
| { |
| /* %OP relocating operator found. */ |
| errmsg = cgen_parse_address (cd, strp, opindex, code, |
| & result_type, & value); |
| if (errmsg == NULL) |
| { |
| switch (result_type) |
| { |
| case (CGEN_PARSE_OPERAND_RESULT_NUMBER): |
| if (code == BFD_RELOC_HI16) |
| value = (value >> 16) & 0xFFFF; |
| else if (code == BFD_RELOC_LO16) |
| value = value & 0xFFFF; |
| else |
| errmsg = _("Biiiig Trouble in parse_imm16!"); |
| break; |
| |
| case (CGEN_PARSE_OPERAND_RESULT_QUEUED): |
| /* No special processing for this case. */ |
| break; |
| |
| default: |
| errmsg = _("The percent-operator's operand is not a symbol"); |
| break; |
| } |
| } |
| *valuep = value; |
| } |
| else |
| { |
| /* Parse hex values like 0xffff as unsigned, and sign extend |
| them manually. */ |
| int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16); |
| |
| if ((*strp)[0] == '0' |
| && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) |
| parse_signed = 0; |
| |
| /* No relocating operator. Parse as an number. */ |
| if (parse_signed) |
| { |
| /* Parse as as signed integer. */ |
| |
| errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); |
| |
| if (errmsg == NULL) |
| { |
| #if 0 |
| /* Manual range checking is needed for the signed case. */ |
| if (*valuep & 0x8000) |
| value = 0xffff0000 | *valuep; |
| else |
| value = *valuep; |
| |
| if (signed_out_of_bounds (value)) |
| errmsg = _("Operand out of range. Must be between -32768 and 32767."); |
| /* Truncate to 16 bits. This is necessary |
| because cgen will have sign extended *valuep. */ |
| *valuep &= 0xFFFF; |
| #endif |
| } |
| } |
| else |
| { |
| /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */ |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep); |
| |
| if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16 |
| && *valuep >= 0x8000 |
| && *valuep <= 0xffff) |
| *valuep -= 0x10000; |
| } |
| } |
| |
| return errmsg; |
| } |
| |
| |
| static const char * |
| parse_dup (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 0; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| |
| static const char * |
| parse_ball (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 0; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| static const char * |
| parse_xmode (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 0; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| static const char * |
| parse_rc (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) |
| { |
| *strp += 1; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) |
| { |
| *strp += 1; |
| *valuep = 0; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| static const char * |
| parse_cbrb (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 0; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| static const char * |
| parse_rbbc (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 0; |
| } |
| else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 2; |
| } |
| else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 3; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| return errmsg; |
| } |
| |
| static const char * |
| parse_type (CGEN_CPU_DESC cd, |
| const char **strp, |
| int opindex, |
| unsigned long *valuep) |
| { |
| const char *errmsg = NULL; |
| |
| if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) |
| { |
| *strp += 3; |
| *valuep = 0; |
| } |
| else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) |
| { |
| *strp += 4; |
| *valuep = 1; |
| } |
| else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) |
| { |
| *strp += 2; |
| *valuep = 2; |
| } |
| else |
| errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| |
| if ((errmsg == NULL) && (*valuep == 3)) |
| errmsg = _("invalid operand. type may have values 0,1,2 only."); |
| |
| return errmsg; |
| } |
| |
| /* -- dis.c */ |
| |
| const char * mt_cgen_parse_operand |
| (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); |
| |
| /* Main entry point for operand parsing. |
| |
| This function is basically just a big switch statement. Earlier versions |
| used tables to look up the function to use, but |
| - if the table contains both assembler and disassembler functions then |
| the disassembler contains much of the assembler and vice-versa, |
| - there's a lot of inlining possibilities as things grow, |
| - using a switch statement avoids the function call overhead. |
| |
| This function could be moved into `parse_insn_normal', but keeping it |
| separate makes clear the interface between `parse_insn_normal' and each of |
| the handlers. */ |
| |
| const char * |
| mt_cgen_parse_operand (CGEN_CPU_DESC cd, |
| int opindex, |
| const char ** strp, |
| CGEN_FIELDS * fields) |
| { |
| const char * errmsg = NULL; |
| /* Used by scalar operands that still need to be parsed. */ |
| long junk ATTRIBUTE_UNUSED; |
| |
| switch (opindex) |
| { |
| case MT_OPERAND_A23 : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23)); |
| break; |
| case MT_OPERAND_BALL : |
| errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball)); |
| break; |
| case MT_OPERAND_BALL2 : |
| errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2)); |
| break; |
| case MT_OPERAND_BANKADDR : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr)); |
| break; |
| case MT_OPERAND_BRC : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc)); |
| break; |
| case MT_OPERAND_BRC2 : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2)); |
| break; |
| case MT_OPERAND_CB1INCR : |
| errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr)); |
| break; |
| case MT_OPERAND_CB1SEL : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel)); |
| break; |
| case MT_OPERAND_CB2INCR : |
| errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr)); |
| break; |
| case MT_OPERAND_CB2SEL : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel)); |
| break; |
| case MT_OPERAND_CBRB : |
| errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb)); |
| break; |
| case MT_OPERAND_CBS : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs)); |
| break; |
| case MT_OPERAND_CBX : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx)); |
| break; |
| case MT_OPERAND_CCB : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb)); |
| break; |
| case MT_OPERAND_CDB : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb)); |
| break; |
| case MT_OPERAND_CELL : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell)); |
| break; |
| case MT_OPERAND_COLNUM : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum)); |
| break; |
| case MT_OPERAND_CONTNUM : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum)); |
| break; |
| case MT_OPERAND_CR : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr)); |
| break; |
| case MT_OPERAND_CTXDISP : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp)); |
| break; |
| case MT_OPERAND_DUP : |
| errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup)); |
| break; |
| case MT_OPERAND_FBDISP : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp)); |
| break; |
| case MT_OPERAND_FBINCR : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr)); |
| break; |
| case MT_OPERAND_FRDR : |
| errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr); |
| break; |
| case MT_OPERAND_FRDRRR : |
| errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr); |
| break; |
| case MT_OPERAND_FRSR1 : |
| errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1); |
| break; |
| case MT_OPERAND_FRSR2 : |
| errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2); |
| break; |
| case MT_OPERAND_ID : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id)); |
| break; |
| case MT_OPERAND_IMM16 : |
| errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s)); |
| break; |
| case MT_OPERAND_IMM16L : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l)); |
| break; |
| case MT_OPERAND_IMM16O : |
| errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s)); |
| break; |
| case MT_OPERAND_IMM16Z : |
| errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u)); |
| break; |
| case MT_OPERAND_INCAMT : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt)); |
| break; |
| case MT_OPERAND_INCR : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr)); |
| break; |
| case MT_OPERAND_LENGTH : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length)); |
| break; |
| case MT_OPERAND_LOOPSIZE : |
| errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo)); |
| break; |
| case MT_OPERAND_MASK : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask)); |
| break; |
| case MT_OPERAND_MASK1 : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1)); |
| break; |
| case MT_OPERAND_MODE : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode)); |
| break; |
| case MT_OPERAND_PERM : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm)); |
| break; |
| case MT_OPERAND_RBBC : |
| errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc)); |
| break; |
| case MT_OPERAND_RC : |
| errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc)); |
| break; |
| case MT_OPERAND_RC1 : |
| errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1)); |
| break; |
| case MT_OPERAND_RC2 : |
| errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2)); |
| break; |
| case MT_OPERAND_RC3 : |
| errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3)); |
| break; |
| case MT_OPERAND_RCNUM : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum)); |
| break; |
| case MT_OPERAND_RDA : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda)); |
| break; |
| case MT_OPERAND_ROWNUM : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum)); |
| break; |
| case MT_OPERAND_ROWNUM1 : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1)); |
| break; |
| case MT_OPERAND_ROWNUM2 : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2)); |
| break; |
| case MT_OPERAND_SIZE : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size)); |
| break; |
| case MT_OPERAND_TYPE : |
| errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type)); |
| break; |
| case MT_OPERAND_WR : |
| errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr)); |
| break; |
| case MT_OPERAND_XMODE : |
| errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode)); |
| break; |
| |
| default : |
| /* xgettext:c-format */ |
| opcodes_error_handler |
| (_("internal error: unrecognized field %d while parsing"), |
| opindex); |
| abort (); |
| } |
| |
| return errmsg; |
| } |
| |
| cgen_parse_fn * const mt_cgen_parse_handlers[] = |
| { |
| parse_insn_normal, |
| }; |
| |
| void |
| mt_cgen_init_asm (CGEN_CPU_DESC cd) |
| { |
| mt_cgen_init_opcode_table (cd); |
| mt_cgen_init_ibld_table (cd); |
| cd->parse_handlers = & mt_cgen_parse_handlers[0]; |
| cd->parse_operand = mt_cgen_parse_operand; |
| #ifdef CGEN_ASM_INIT_HOOK |
| CGEN_ASM_INIT_HOOK |
| #endif |
| } |
| |
| |
| |
| /* Regex construction routine. |
| |
| This translates an opcode syntax string into a regex string, |
| by replacing any non-character syntax element (such as an |
| opcode) with the pattern '.*' |
| |
| It then compiles the regex and stores it in the opcode, for |
| later use by mt_cgen_assemble_insn |
| |
| Returns NULL for success, an error message for failure. */ |
| |
| char * |
| mt_cgen_build_insn_regex (CGEN_INSN *insn) |
| { |
| CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); |
| const char *mnem = CGEN_INSN_MNEMONIC (insn); |
| char rxbuf[CGEN_MAX_RX_ELEMENTS]; |
| char *rx = rxbuf; |
| const CGEN_SYNTAX_CHAR_TYPE *syn; |
| int reg_err; |
| |
| syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); |
| |
| /* Mnemonics come first in the syntax string. */ |
| if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| return _("missing mnemonic in syntax string"); |
| ++syn; |
| |
| /* Generate a case sensitive regular expression that emulates case |
| insensitive matching in the "C" locale. We cannot generate a case |
| insensitive regular expression because in Turkish locales, 'i' and 'I' |
| are not equal modulo case conversion. */ |
| |
| /* Copy the literal mnemonic out of the insn. */ |
| for (; *mnem; mnem++) |
| { |
| char c = *mnem; |
| |
| if (ISALPHA (c)) |
| { |
| *rx++ = '['; |
| *rx++ = TOLOWER (c); |
| *rx++ = TOUPPER (c); |
| *rx++ = ']'; |
| } |
| else |
| *rx++ = c; |
| } |
| |
| /* Copy any remaining literals from the syntax string into the rx. */ |
| for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) |
| { |
| if (CGEN_SYNTAX_CHAR_P (* syn)) |
| { |
| char c = CGEN_SYNTAX_CHAR (* syn); |
| |
| switch (c) |
| { |
| /* Escape any regex metacharacters in the syntax. */ |
| case '.': case '[': case '\\': |
| case '*': case '^': case '$': |
| |
| #ifdef CGEN_ESCAPE_EXTENDED_REGEX |
| case '?': case '{': case '}': |
| case '(': case ')': case '*': |
| case '|': case '+': case ']': |
| #endif |
| *rx++ = '\\'; |
| *rx++ = c; |
| break; |
| |
| default: |
| if (ISALPHA (c)) |
| { |
| *rx++ = '['; |
| *rx++ = TOLOWER (c); |
| *rx++ = TOUPPER (c); |
| *rx++ = ']'; |
| } |
| else |
| *rx++ = c; |
| break; |
| } |
| } |
| else |
| { |
| /* Replace non-syntax fields with globs. */ |
| *rx++ = '.'; |
| *rx++ = '*'; |
| } |
| } |
| |
| /* Trailing whitespace ok. */ |
| * rx++ = '['; |
| * rx++ = ' '; |
| * rx++ = '\t'; |
| * rx++ = ']'; |
| * rx++ = '*'; |
| |
| /* But anchor it after that. */ |
| * rx++ = '$'; |
| * rx = '\0'; |
| |
| CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); |
| reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); |
| |
| if (reg_err == 0) |
| return NULL; |
| else |
| { |
| static char msg[80]; |
| |
| regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); |
| regfree ((regex_t *) CGEN_INSN_RX (insn)); |
| free (CGEN_INSN_RX (insn)); |
| (CGEN_INSN_RX (insn)) = NULL; |
| return msg; |
| } |
| } |
| |
| |
| /* Default insn parser. |
| |
| The syntax string is scanned and operands are parsed and stored in FIELDS. |
| Relocs are queued as we go via other callbacks. |
| |
| ??? Note that this is currently an all-or-nothing parser. If we fail to |
| parse the instruction, we return 0 and the caller will start over from |
| the beginning. Backtracking will be necessary in parsing subexpressions, |
| but that can be handled there. Not handling backtracking here may get |
| expensive in the case of the m68k. Deal with later. |
| |
| Returns NULL for success, an error message for failure. */ |
| |
| static const char * |
| parse_insn_normal (CGEN_CPU_DESC cd, |
| const CGEN_INSN *insn, |
| const char **strp, |
| CGEN_FIELDS *fields) |
| { |
| /* ??? Runtime added insns not handled yet. */ |
| const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); |
| const char *str = *strp; |
| const char *errmsg; |
| const char *p; |
| const CGEN_SYNTAX_CHAR_TYPE * syn; |
| #ifdef CGEN_MNEMONIC_OPERANDS |
| /* FIXME: wip */ |
| int past_opcode_p; |
| #endif |
| |
| /* For now we assume the mnemonic is first (there are no leading operands). |
| We can parse it without needing to set up operand parsing. |
| GAS's input scrubber will ensure mnemonics are lowercase, but we may |
| not be called from GAS. */ |
| p = CGEN_INSN_MNEMONIC (insn); |
| while (*p && TOLOWER (*p) == TOLOWER (*str)) |
| ++p, ++str; |
| |
| if (* p) |
| return _("unrecognized instruction"); |
| |
| #ifndef CGEN_MNEMONIC_OPERANDS |
| if (* str && ! ISSPACE (* str)) |
| return _("unrecognized instruction"); |
| #endif |
| |
| CGEN_INIT_PARSE (cd); |
| cgen_init_parse_operand (cd); |
| #ifdef CGEN_MNEMONIC_OPERANDS |
| past_opcode_p = 0; |
| #endif |
| |
| /* We don't check for (*str != '\0') here because we want to parse |
| any trailing fake arguments in the syntax string. */ |
| syn = CGEN_SYNTAX_STRING (syntax); |
| |
| /* Mnemonics come first for now, ensure valid string. */ |
| if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| abort (); |
| |
| ++syn; |
| |
| while (* syn != 0) |
| { |
| /* Non operand chars must match exactly. */ |
| if (CGEN_SYNTAX_CHAR_P (* syn)) |
| { |
| /* FIXME: While we allow for non-GAS callers above, we assume the |
| first char after the mnemonic part is a space. */ |
| /* FIXME: We also take inappropriate advantage of the fact that |
| GAS's input scrubber will remove extraneous blanks. */ |
| if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) |
| { |
| #ifdef CGEN_MNEMONIC_OPERANDS |
| if (CGEN_SYNTAX_CHAR(* syn) == ' ') |
| past_opcode_p = 1; |
| #endif |
| ++ syn; |
| ++ str; |
| } |
| else if (*str) |
| { |
| /* Syntax char didn't match. Can't be this insn. */ |
| static char msg [80]; |
| |
| /* xgettext:c-format */ |
| sprintf (msg, _("syntax error (expected char `%c', found `%c')"), |
| CGEN_SYNTAX_CHAR(*syn), *str); |
| return msg; |
| } |
| else |
| { |
| /* Ran out of input. */ |
| static char msg [80]; |
| |
| /* xgettext:c-format */ |
| sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), |
| CGEN_SYNTAX_CHAR(*syn)); |
| return msg; |
| } |
| continue; |
| } |
| |
| #ifdef CGEN_MNEMONIC_OPERANDS |
| (void) past_opcode_p; |
| #endif |
| /* We have an operand of some sort. */ |
| errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); |
| if (errmsg) |
| return errmsg; |
| |
| /* Done with this operand, continue with next one. */ |
| ++ syn; |
| } |
| |
| /* If we're at the end of the syntax string, we're done. */ |
| if (* syn == 0) |
| { |
| /* FIXME: For the moment we assume a valid `str' can only contain |
| blanks now. IE: We needn't try again with a longer version of |
| the insn and it is assumed that longer versions of insns appear |
| before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ |
| while (ISSPACE (* str)) |
| ++ str; |
| |
| if (* str != '\0') |
| return _("junk at end of line"); /* FIXME: would like to include `str' */ |
| |
| return NULL; |
| } |
| |
| /* We couldn't parse it. */ |
| return _("unrecognized instruction"); |
| } |
| |
| /* Main entry point. |
| This routine is called for each instruction to be assembled. |
| STR points to the insn to be assembled. |
| We assume all necessary tables have been initialized. |
| The assembled instruction, less any fixups, is stored in BUF. |
| Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value |
| still needs to be converted to target byte order, otherwise BUF is an array |
| of bytes in target byte order. |
| The result is a pointer to the insn's entry in the opcode table, |
| or NULL if an error occured (an error message will have already been |
| printed). |
| |
| Note that when processing (non-alias) macro-insns, |
| this function recurses. |
| |
| ??? It's possible to make this cpu-independent. |
| One would have to deal with a few minor things. |
| At this point in time doing so would be more of a curiosity than useful |
| [for example this file isn't _that_ big], but keeping the possibility in |
| mind helps keep the design clean. */ |
| |
| const CGEN_INSN * |
| mt_cgen_assemble_insn (CGEN_CPU_DESC cd, |
| const char *str, |
| CGEN_FIELDS *fields, |
| CGEN_INSN_BYTES_PTR buf, |
| char **errmsg) |
| { |
| const char *start; |
| CGEN_INSN_LIST *ilist; |
| const char *parse_errmsg = NULL; |
| const char *insert_errmsg = NULL; |
| int recognized_mnemonic = 0; |
| |
| /* Skip leading white space. */ |
| while (ISSPACE (* str)) |
| ++ str; |
| |
| /* The instructions are stored in hashed lists. |
| Get the first in the list. */ |
| ilist = CGEN_ASM_LOOKUP_INSN (cd, str); |
| |
| /* Keep looking until we find a match. */ |
| start = str; |
| for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) |
| { |
| const CGEN_INSN *insn = ilist->insn; |
| recognized_mnemonic = 1; |
| |
| #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
| /* Not usually needed as unsupported opcodes |
| shouldn't be in the hash lists. */ |
| /* Is this insn supported by the selected cpu? */ |
| if (! mt_cgen_insn_supported (cd, insn)) |
| continue; |
| #endif |
| /* If the RELAXED attribute is set, this is an insn that shouldn't be |
| chosen immediately. Instead, it is used during assembler/linker |
| relaxation if possible. */ |
| if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) |
| continue; |
| |
| str = start; |
| |
| /* Skip this insn if str doesn't look right lexically. */ |
| if (CGEN_INSN_RX (insn) != NULL && |
| regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) |
| continue; |
| |
| /* Allow parse/insert handlers to obtain length of insn. */ |
| CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); |
| |
| parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); |
| if (parse_errmsg != NULL) |
| continue; |
| |
| /* ??? 0 is passed for `pc'. */ |
| insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, |
| (bfd_vma) 0); |
| if (insert_errmsg != NULL) |
| continue; |
| |
| /* It is up to the caller to actually output the insn and any |
| queued relocs. */ |
| return insn; |
| } |
| |
| { |
| static char errbuf[150]; |
| const char *tmp_errmsg; |
| #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS |
| #define be_verbose 1 |
| #else |
| #define be_verbose 0 |
| #endif |
| |
| if (be_verbose) |
| { |
| /* If requesting verbose error messages, use insert_errmsg. |
| Failing that, use parse_errmsg. */ |
| tmp_errmsg = (insert_errmsg ? insert_errmsg : |
| parse_errmsg ? parse_errmsg : |
| recognized_mnemonic ? |
| _("unrecognized form of instruction") : |
| _("unrecognized instruction")); |
| |
| if (strlen (start) > 50) |
| /* xgettext:c-format */ |
| sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); |
| else |
| /* xgettext:c-format */ |
| sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); |
| } |
| else |
| { |
| if (strlen (start) > 50) |
| /* xgettext:c-format */ |
| sprintf (errbuf, _("bad instruction `%.50s...'"), start); |
| else |
| /* xgettext:c-format */ |
| sprintf (errbuf, _("bad instruction `%.50s'"), start); |
| } |
| |
| *errmsg = errbuf; |
| return NULL; |
| } |
| } |