diff options
author | Doug Evans <dje@google.com> | 1998-04-27 17:48:05 +0000 |
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committer | Doug Evans <dje@google.com> | 1998-04-27 17:48:05 +0000 |
commit | 2613b5e63d2999e640a0f46c2795ae71a3ca7846 (patch) | |
tree | 7385736faf608b5af9a121b98010853008d0d704 | |
parent | a9eeaad7655dc0ff1f268f93563edd73de4de063 (diff) | |
download | gdb-2613b5e63d2999e640a0f46c2795ae71a3ca7846.zip gdb-2613b5e63d2999e640a0f46c2795ae71a3ca7846.tar.gz gdb-2613b5e63d2999e640a0f46c2795ae71a3ca7846.tar.bz2 |
* cgen-asm.c (cgen_current_opcode_table): Renamed from ..._data.
(asm_hash_table_entries): New variable.
(cgen_asm_init): Free asm_hash_table_entries.
(hash_insn_array,hash_insn_list): New functions.
(build_asm_hash_table): Use them. Hash macro insns as well.
(cgen_asm_lookup_insn): Update.
* cgen_dis.c (cgen_current_opcode_table): Renamed from ..._data.
(dis_hash_table_entries): New variable.
(cgen_dis_init): Free dis_hash_table_entries.
(hash_insn_array,hash_insn_list): New functions.
(build_dis_hash_table): Use them. Hash macro insns as well.
(cgen_dis_lookup_insn): Update.
* cgen-opc.c (cgen_current_opcode_table): Renamed from ..._data.
(cgen_set_cpu,cgen_hw_lookup,cgen_insn_count): Update.
(cgen_macro_insn_count): New function.
* cgen-opc.in (@arch@_cgen_lookup_insn): New arg alias_p.
All callers updated. Sanity check result of extract fn.
(@arch@_cgen_get_insn_operands): Change result type to void.
Delete args insn_value, length. New arg fields. All callers updated.
(@arch@_cgen_lookup_get_insn_operands): New function.
-rw-r--r-- | opcodes/ChangeLog | 23 | ||||
-rw-r--r-- | opcodes/cgen-asm.c | 247 | ||||
-rw-r--r-- | opcodes/cgen-opc.in | 83 |
3 files changed, 235 insertions, 118 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 575aef3..82a7d16 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,26 @@ +Mon Apr 27 10:33:56 1998 Doug Evans <devans@seba.cygnus.com> + + * cgen-asm.c (cgen_current_opcode_table): Renamed from ..._data. + (asm_hash_table_entries): New variable. + (cgen_asm_init): Free asm_hash_table_entries. + (hash_insn_array,hash_insn_list): New functions. + (build_asm_hash_table): Use them. Hash macro insns as well. + (cgen_asm_lookup_insn): Update. + * cgen_dis.c (cgen_current_opcode_table): Renamed from ..._data. + (dis_hash_table_entries): New variable. + (cgen_dis_init): Free dis_hash_table_entries. + (hash_insn_array,hash_insn_list): New functions. + (build_dis_hash_table): Use them. Hash macro insns as well. + (cgen_dis_lookup_insn): Update. + * cgen-opc.c (cgen_current_opcode_table): Renamed from ..._data. + (cgen_set_cpu,cgen_hw_lookup,cgen_insn_count): Update. + (cgen_macro_insn_count): New function. + * cgen-opc.in (@arch@_cgen_lookup_insn): New arg alias_p. + All callers updated. Sanity check result of extract fn. + (@arch@_cgen_get_insn_operands): Change result type to void. + Delete args insn_value, length. New arg fields. All callers updated. + (@arch@_cgen_lookup_get_insn_operands): New function. + Fri Apr 24 16:07:57 1998 Alan Modra <alan@spri.levels.unisa.edu.au> * i386-dis.c (OP_DSSI): Print segment override. diff --git a/opcodes/cgen-asm.c b/opcodes/cgen-asm.c index 5427aaa..3519f8a 100644 --- a/opcodes/cgen-asm.c +++ b/opcodes/cgen-asm.c @@ -1,34 +1,30 @@ /* CGEN generic assembler support code. -Copyright (C) 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. -This file is part of the GNU Binutils and GDB, the GNU debugger. + This file is part of the GNU Binutils and GDB, the GNU debugger. -This program 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 2, or (at your option) -any later version. + This program 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 2, or (at your option) + any later version. -This program 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. + This program 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., -59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + 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., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include "config.h" +#include "sysdep.h" #include <stdio.h> -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif +#include <ctype.h> #include "ansidecl.h" #include "libiberty.h" #include "bfd.h" +#include "symcat.h" #include "opcode/cgen.h" /* Operand parsing callback. */ @@ -38,10 +34,11 @@ const char * (*cgen_parse_operand_fn) /* This is not published as part of the public interface so we don't declare this in cgen.h. */ -extern CGEN_OPCODE_DATA *cgen_current_opcode_data; +extern CGEN_OPCODE_TABLE *cgen_current_opcode_table; /* Assembler instruction hash table. */ static CGEN_INSN_LIST **asm_hash_table; +static CGEN_INSN_LIST *asm_hash_table_entries; /* Called once at startup and whenever machine/endian change. */ @@ -51,7 +48,9 @@ cgen_asm_init () if (asm_hash_table) { free (asm_hash_table); + free (asm_hash_table_entries); asm_hash_table = NULL; + asm_hash_table_entries = NULL; } } @@ -65,61 +64,131 @@ cgen_init_parse_operand () NULL, NULL); } +/* Subroutine of build_asm_hash_table to add INSNS to the hash table. + + COUNT is the number of elements in INSNS. + ENTSIZE is sizeof (CGEN_INSN) for the target. + This is a bit tricky as the size of the attribute member of CGEN_INSN + is variable among architectures. This code could be moved to + cgen-asm.in, but I prefer to keep it here for now. + OTABLE is the opcode table. + HTABLE points to the hash table. + HENTBUF is a pointer to sufficiently large buffer of hash entries. + The result is a pointer to the next entry to use. + + The table is scanned backwards as additions are made to the front of the + list and we want earlier ones to be prefered. */ + +static CGEN_INSN_LIST * +hash_insn_array (insns, count, entsize, otable, htable, hentbuf) + const CGEN_INSN * insns; + int count; + int entsize; + const CGEN_OPCODE_TABLE * otable; + CGEN_INSN_LIST ** htable; + CGEN_INSN_LIST * hentbuf; +{ + const CGEN_INSN * insn; + + for (insn = (CGEN_INSN *) ((char *) insns + entsize * (count - 1)); + insn >= insns; + insn = (CGEN_INSN *) ((char *) insn - entsize), ++ hentbuf) + { + unsigned int hash; + + if (! (*otable->asm_hash_p) (insn)) + continue; + hash = (*otable->asm_hash) (CGEN_INSN_MNEMONIC (insn)); + hentbuf->next = htable[hash]; + hentbuf->insn = insn; + htable[hash] = hentbuf; + } + + return hentbuf; +} + +/* Subroutine of build_asm_hash_table to add INSNS to the hash table. + This function is identical to hash_insn_array except the insns are + in a list. */ + +static CGEN_INSN_LIST * +hash_insn_list (insns, otable, htable, hentbuf) + const CGEN_INSN_LIST * insns; + const CGEN_OPCODE_TABLE * otable; + CGEN_INSN_LIST ** htable; + CGEN_INSN_LIST * hentbuf; +{ + const CGEN_INSN_LIST * ilist; + + for (ilist = insns; ilist != NULL; ilist = ilist->next, ++ hentbuf) + { + unsigned int hash; + + if (! (*otable->asm_hash_p) (ilist->insn)) + continue; + hash = (*otable->asm_hash) (CGEN_INSN_MNEMONIC (ilist->insn)); + hentbuf->next = htable[hash]; + hentbuf->insn = ilist->insn; + asm_hash_table[hash] = hentbuf; + } + + return hentbuf; +} + /* Build the assembler instruction hash table. */ static void build_asm_hash_table () { - int i; - unsigned int hash; - int count = cgen_insn_count (); - CGEN_OPCODE_DATA *data = cgen_current_opcode_data; - CGEN_INSN_TABLE *insn_table = data->insn_table; - unsigned int hash_size = insn_table->asm_hash_table_size; - const CGEN_INSN *insn; - CGEN_INSN_LIST *insn_lists,*new_insns; + int count = cgen_insn_count () + cgen_macro_insn_count (); + CGEN_OPCODE_TABLE *opcode_table = cgen_current_opcode_table; + CGEN_INSN_TABLE *insn_table = opcode_table->insn_table; + CGEN_INSN_TABLE *macro_insn_table = opcode_table->macro_insn_table; + unsigned int hash_size = opcode_table->asm_hash_table_size; + CGEN_INSN_LIST *hash_entry_buf; /* The space allocated for the hash table consists of two parts: the hash table and the hash lists. */ asm_hash_table = (CGEN_INSN_LIST **) - xmalloc (hash_size * sizeof (CGEN_INSN_LIST *) - + count * sizeof (CGEN_INSN_LIST)); - memset (asm_hash_table, 0, - hash_size * sizeof (CGEN_INSN_LIST *) - + count * sizeof (CGEN_INSN_LIST)); - insn_lists = (CGEN_INSN_LIST *) (asm_hash_table + hash_size); + xmalloc (hash_size * sizeof (CGEN_INSN_LIST *)); + memset (asm_hash_table, 0, hash_size * sizeof (CGEN_INSN_LIST *)); + asm_hash_table_entries = hash_entry_buf = (CGEN_INSN_LIST *) + xmalloc (count * sizeof (CGEN_INSN_LIST)); /* Add compiled in insns. - The table is scanned backwards as later additions are inserted in - front of earlier ones and we want earlier ones to be prefered. - We stop at the first one as it is a reserved entry. */ + Don't include the first one as it is a reserved entry. */ + /* ??? It was the end of all hash chains, and also the special + "illegal insn" marker. May be able to do it differently now. */ - for (insn = insn_table->init_entries + insn_table->num_init_entries - 1; - insn > insn_table->init_entries; - --insn, ++insn_lists) - { - hash = (*insn_table->asm_hash) (insn->syntax.mnemonic); - insn_lists->next = asm_hash_table[hash]; - insn_lists->insn = insn; - asm_hash_table[hash] = insn_lists; - } + hash_entry_buf = hash_insn_array ((CGEN_INSN *) ((char *) insn_table->init_entries + + insn_table->entry_size), + insn_table->num_init_entries - 1, + insn_table->entry_size, + opcode_table, asm_hash_table, hash_entry_buf); + + /* Add compiled in macro-insns. */ + + hash_entry_buf = hash_insn_array (macro_insn_table->init_entries, + macro_insn_table->num_init_entries, + macro_insn_table->entry_size, + opcode_table, asm_hash_table, hash_entry_buf); /* Add runtime added insns. - ??? Currently later added insns will be prefered over earlier ones. - Not sure this is a bug or not. */ - for (new_insns = insn_table->new_entries; - new_insns != NULL; - new_insns = new_insns->next, ++insn_lists) - { - hash = (*insn_table->asm_hash) (new_insns->insn->syntax.mnemonic); - insn_lists->next = asm_hash_table[hash]; - insn_lists->insn = new_insns->insn; - asm_hash_table[hash] = insn_lists; - } + Later added insns will be prefered over earlier ones. */ + + hash_entry_buf = hash_insn_list (insn_table->new_entries, opcode_table, + asm_hash_table, hash_entry_buf); + + /* Add runtime added macro-insns. */ + + hash_insn_list (macro_insn_table->new_entries, + opcode_table, asm_hash_table, hash_entry_buf); } -/* Return the first entry in the hash list for INSN. */ +/* Return the first entry in the hash list for INSN. + ??? Of course it would be better to pass in a pointer to the + opcode data structure, rather than reference a global. Later. */ CGEN_INSN_LIST * cgen_asm_lookup_insn (insn) @@ -130,7 +199,7 @@ cgen_asm_lookup_insn (insn) if (asm_hash_table == NULL) build_asm_hash_table (); - hash = (*cgen_current_opcode_data->insn_table->asm_hash) (insn); + hash = (*cgen_current_opcode_table->asm_hash) (insn); return asm_hash_table[hash]; } @@ -145,35 +214,40 @@ cgen_asm_lookup_insn (insn) const char * cgen_parse_keyword (strp, keyword_table, valuep) const char **strp; - struct cgen_keyword *keyword_table; + CGEN_KEYWORD *keyword_table; long *valuep; { - const struct cgen_keyword_entry *ke; + const CGEN_KEYWORD_ENTRY *ke; char buf[256]; - const char *p; + const char *p,*start; - p = *strp; + p = start = *strp; - /* Allow any first character. */ + /* Allow any first character. + Note that this allows recognizing ",a" for the annul flag in sparc + even though "," is subsequently not a valid keyword char. */ if (*p) ++p; /* Now allow letters, digits, and _. */ - while (isalnum (*p) || *p == '_') + while (((p - start) < (int) sizeof (buf)) + && (isalnum ((unsigned char) *p) || *p == '_')) ++p; - if (p - *strp > 255) + if (p - start >= (int) sizeof (buf)) return "unrecognized keyword/register name"; - memcpy (buf, *strp, p - *strp); - buf[p - *strp] = 0; + memcpy (buf, start, p - start); + buf[p - start] = 0; ke = cgen_keyword_lookup_name (keyword_table, buf); if (ke != NULL) { *valuep = ke->value; - *strp = p; + /* Don't advance pointer if we recognized the null keyword. */ + if (ke->name[0] != 0) + *strp = p; return NULL; } @@ -183,13 +257,12 @@ cgen_parse_keyword (strp, keyword_table, valuep) /* Signed integer parser. */ const char * -cgen_parse_signed_integer (strp, opindex, min, max, valuep) +cgen_parse_signed_integer (strp, opindex, valuep) const char **strp; int opindex; - long min, max; long *valuep; { - long value; + bfd_vma value; enum cgen_parse_operand_result result; const char *errmsg; @@ -198,24 +271,19 @@ cgen_parse_signed_integer (strp, opindex, min, max, valuep) &result, &value); /* FIXME: Examine `result'. */ if (!errmsg) - { - if (value < min || value > max) - return "integer operand out of range"; - *valuep = value; - } + *valuep = value; return errmsg; } /* Unsigned integer parser. */ const char * -cgen_parse_unsigned_integer (strp, opindex, min, max, valuep) +cgen_parse_unsigned_integer (strp, opindex, valuep) const char **strp; int opindex; - unsigned long min, max; unsigned long *valuep; { - unsigned long value; + bfd_vma value; enum cgen_parse_operand_result result; const char *errmsg; @@ -224,33 +292,32 @@ cgen_parse_unsigned_integer (strp, opindex, min, max, valuep) &result, &value); /* FIXME: Examine `result'. */ if (!errmsg) - { - if (value < min || value > max) - return "integer operand out of range"; - *valuep = value; - } + *valuep = value; return errmsg; } /* Address parser. */ const char * -cgen_parse_address (strp, opindex, opinfo, valuep) +cgen_parse_address (strp, opindex, opinfo, resultp, valuep) const char **strp; int opindex; int opinfo; + enum cgen_parse_operand_result *resultp; long *valuep; { - long value; - enum cgen_parse_operand_result result; + bfd_vma value; + enum cgen_parse_operand_result result_type; const char *errmsg; errmsg = (*cgen_parse_operand_fn) (CGEN_PARSE_OPERAND_ADDRESS, strp, opindex, opinfo, - &result, &value); + &result_type, &value); /* FIXME: Examine `result'. */ if (!errmsg) { + if (resultp != NULL) + *resultp = result_type; *valuep = value; } return errmsg; diff --git a/opcodes/cgen-opc.in b/opcodes/cgen-opc.in index a4ead5d..af6e672 100644 --- a/opcodes/cgen-opc.in +++ b/opcodes/cgen-opc.in @@ -30,10 +30,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "@arch@-opc.h" /* Look up instruction INSN_VALUE and extract its fields. - If non-null INSN is the insn table entry. + INSN, if non-null, is the insn table entry. Otherwise INSN_VALUE is examined to compute it. LENGTH is the bit length of INSN_VALUE if known, otherwise 0. + 0 is only valid if `insn == NULL && ! defined (CGEN_INT_INSN)'. + If INSN != NULL, LENGTH must be valid. ALIAS_P is non-zero if alias insns are to be included in the search. + The result a pointer to the insn table entry, or NULL if the instruction wasn't recognized. */ @@ -43,6 +46,7 @@ const CGEN_INSN * cgen_insn_t insn_value; int length; CGEN_FIELDS *fields; + int alias_p; { char buf[16]; @@ -91,9 +95,15 @@ const CGEN_INSN * extract handler. */ if ((insn_value & CGEN_INSN_MASK (insn)) == CGEN_INSN_VALUE (insn)) { - length = (*CGEN_EXTRACT_FN (insn)) (insn, NULL, insn_value, fields); - if (length > 0) - return insn; + int elength = (*CGEN_EXTRACT_FN (insn)) (insn, NULL, + insn_value, fields); + if (elength > 0) + { + /* sanity check */ + if (length != 0 && length != elength) + abort (); + return insn; + } } } @@ -106,43 +116,34 @@ const CGEN_INSN * if (! alias_p && CGEN_INSN_ATTR (insn, CGEN_INSN_ALIAS)) abort (); + /* Sanity check: length must be correct. */ + if (length != CGEN_INSN_BITSIZE (insn)) + abort (); length = (*CGEN_EXTRACT_FN (insn)) (insn, NULL, insn_value, fields); - if (length > 0) - return insn; + /* Sanity check: must succeed. + Could relax this later if it ever proves useful. */ + if (length == 0) + abort (); + return insn; } return NULL; } -/* Fill in the operand instances used by insn INSN_VALUE. - If non-null INS is the insn table entry. - Otherwise INSN_VALUE is examined to compute it. - LENGTH is the number of bits in INSN_VALUE if known, otherwise 0. +/* Fill in the operand instances used by INSN whose operands are FIELDS. INDICES is a pointer to a buffer of MAX_OPERAND_INSTANCES ints to be filled - in. - The result a pointer to the insn table entry, or NULL if the instruction - wasn't recognized. */ + in. */ -const CGEN_INSN * -@arch@_cgen_get_insn_operands (insn, insn_value, length, indices) - const CGEN_INSN *insn; - cgen_insn_t insn_value; - int length; +void +@arch@_cgen_get_insn_operands (insn, fields, indices) + const CGEN_INSN * insn; + const CGEN_FIELDS * fields; int *indices; { - CGEN_FIELDS fields; const CGEN_OPERAND_INSTANCE *opinst; int i; - /* FIXME: ALIAS insns are in transition from being record in the insn table - to being recorded separately as macros. They don't have semantic code - so they can't be used here. Thus we currently always ignore the INSN - argument. */ - insn = @arch@_cgen_lookup_insn (NULL, insn_value, length, &fields, 0); - if (! insn) - return NULL; - for (i = 0, opinst = CGEN_INSN_OPERANDS (insn); opinst != NULL && CGEN_OPERAND_INSTANCE_TYPE (opinst) != CGEN_OPERAND_INSTANCE_END; @@ -152,8 +153,34 @@ const CGEN_INSN * if (op == NULL) indices[i] = CGEN_OPERAND_INSTANCE_INDEX (opinst); else - indices[i] = @arch@_cgen_get_operand (CGEN_OPERAND_INDEX (op), &fields); + indices[i] = @arch@_cgen_get_operand (CGEN_OPERAND_INDEX (op), fields); } +} + +/* Cover function to @arch@_cgen_get_insn_operands when either INSN or FIELDS + isn't known. + The INSN, INSN_VALUE, and LENGTH arguments are passed to + @arch@_cgen_lookup_insn unchanged. + + The result is the insn table entry or NULL if the instruction wasn't + recognized. */ + +const CGEN_INSN * +@arch@_cgen_lookup_get_insn_operands (insn, insn_value, length, indices) + const CGEN_INSN *insn; + cgen_insn_t insn_value; + int length; + int *indices; +{ + CGEN_FIELDS fields; + + /* Pass non-zero for ALIAS_P only if INSN != NULL. + If INSN == NULL, we want a real insn. */ + insn = @arch@_cgen_lookup_insn (insn, insn_value, length, &fields, + insn != NULL); + if (! insn) + return NULL; + @arch@_cgen_get_insn_operands (insn, &fields, indices); return insn; } |