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authorNick Clifton <nickc@redhat.com>2011-08-22 15:25:07 +0000
committerNick Clifton <nickc@redhat.com>2011-08-22 15:25:07 +0000
commitdc15e575adef771baec7fce97d8c3b044bce944d (patch)
tree81b4a7ad9f283c1686433e295317e210fcca5f5d /cpu/ip2k.opc
parent365b60b058820ac395db8305aa5ab4ff5ce1a3af (diff)
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Move cpu files from cgen/cpu to top level cpu directory.
Diffstat (limited to 'cpu/ip2k.opc')
-rw-r--r--cpu/ip2k.opc633
1 files changed, 633 insertions, 0 deletions
diff --git a/cpu/ip2k.opc b/cpu/ip2k.opc
new file mode 100644
index 0000000..512c3f3
--- /dev/null
+++ b/cpu/ip2k.opc
@@ -0,0 +1,633 @@
+/* IP2K opcode support. -*- C -*-
+ Copyright 2002, 2005, 2011 Free Software Foundation, Inc.
+
+ Contributed by Red Hat Inc;
+
+ This file is part of the GNU Binutils.
+
+ 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 3 of the License, 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.
+
+ 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. */
+
+/*
+ Each section is delimited with start and end markers.
+
+ <arch>-opc.h additions use: "-- opc.h"
+ <arch>-opc.c additions use: "-- opc.c"
+ <arch>-asm.c additions use: "-- asm.c"
+ <arch>-dis.c additions use: "-- dis.c"
+ <arch>-ibd.h additions use: "-- ibd.h". */
+
+/* -- opc.h */
+
+/* Check applicability of instructions against machines. */
+#define CGEN_VALIDATE_INSN_SUPPORTED
+
+/* Allows reason codes to be output when assembler errors occur. */
+#define CGEN_VERBOSE_ASSEMBLER_ERRORS
+
+/* Override disassembly hashing - there are variable bits in the top
+ byte of these instructions. */
+#define CGEN_DIS_HASH_SIZE 8
+#define CGEN_DIS_HASH(buf, value) \
+ (((* (unsigned char*) (buf)) >> 5) % CGEN_DIS_HASH_SIZE)
+
+#define CGEN_ASM_HASH_SIZE 127
+#define CGEN_ASM_HASH(insn) ip2k_asm_hash (insn)
+
+extern unsigned int ip2k_asm_hash (const char *);
+extern int ip2k_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *);
+
+/* -- opc.c */
+
+#include "safe-ctype.h"
+
+/* A better hash function for instruction mnemonics. */
+unsigned int
+ip2k_asm_hash (const char* insn)
+{
+ unsigned int hash;
+ const char* m = insn;
+
+ for (hash = 0; *m && ! ISSPACE (*m); m++)
+ hash = (hash * 23) ^ (0x1F & TOLOWER (*m));
+
+ /* printf ("%s %d\n", insn, (hash % CGEN_ASM_HASH_SIZE)); */
+
+ return hash % CGEN_ASM_HASH_SIZE;
+}
+
+
+/* Special check to ensure that instruction exists for given machine. */
+
+int
+ip2k_cgen_insn_supported (CGEN_CPU_DESC cd, const CGEN_INSN *insn)
+{
+ int machs = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH);
+
+ /* No mach attribute? Assume it's supported for all machs. */
+ if (machs == 0)
+ return 1;
+
+ return (machs & cd->machs) != 0;
+}
+
+
+/* -- asm.c */
+
+static const char *
+parse_fr (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
+{
+ const char *errmsg;
+ const char *old_strp;
+ char *afteroffset;
+ enum cgen_parse_operand_result result_type;
+ bfd_vma value;
+ extern CGEN_KEYWORD ip2k_cgen_opval_register_names;
+ bfd_vma tempvalue;
+
+ old_strp = *strp;
+ afteroffset = NULL;
+
+ /* Check here to see if you're about to try parsing a w as the first arg
+ and return an error if you are. */
+ if ((strncmp (*strp, "w", 1) == 0) || (strncmp (*strp, "W", 1) == 0))
+ {
+ (*strp)++;
+
+ if ((strncmp (*strp, ",", 1) == 0) || ISSPACE (**strp))
+ {
+ /* We've been passed a w. Return with an error message so that
+ cgen will try the next parsing option. */
+ errmsg = _("W keyword invalid in FR operand slot.");
+ return errmsg;
+ }
+ *strp = old_strp;
+ }
+
+ /* Attempt parse as register keyword. */
+ errmsg = cgen_parse_keyword (cd, strp, & ip2k_cgen_opval_register_names,
+ (long *) valuep);
+ if (*strp != NULL
+ && errmsg == NULL)
+ return errmsg;
+
+ /* Attempt to parse for "(IP)". */
+ afteroffset = strstr (*strp, "(IP)");
+
+ if (afteroffset == NULL)
+ /* Make sure it's not in lower case. */
+ afteroffset = strstr (*strp, "(ip)");
+
+ if (afteroffset != NULL)
+ {
+ if (afteroffset != *strp)
+ {
+ /* Invalid offset present. */
+ errmsg = _("offset(IP) is not a valid form");
+ return errmsg;
+ }
+ else
+ {
+ *strp += 4;
+ *valuep = 0;
+ errmsg = NULL;
+ return errmsg;
+ }
+ }
+
+ /* Attempt to parse for DP. ex: mov w, offset(DP)
+ mov offset(DP),w */
+
+ /* Try parsing it as an address and see what comes back. */
+ afteroffset = strstr (*strp, "(DP)");
+
+ if (afteroffset == NULL)
+ /* Maybe it's in lower case. */
+ afteroffset = strstr (*strp, "(dp)");
+
+ if (afteroffset != NULL)
+ {
+ if (afteroffset == *strp)
+ {
+ /* No offset present. Use 0 by default. */
+ tempvalue = 0;
+ errmsg = NULL;
+ }
+ else
+ errmsg = cgen_parse_address (cd, strp, opindex,
+ BFD_RELOC_IP2K_FR_OFFSET,
+ & result_type, & tempvalue);
+
+ if (errmsg == NULL)
+ {
+ if (tempvalue <= 127)
+ {
+ /* Value is ok. Fix up the first 2 bits and return. */
+ *valuep = 0x0100 | tempvalue;
+ *strp += 4; /* Skip over the (DP) in *strp. */
+ return errmsg;
+ }
+ else
+ {
+ /* Found something there in front of (DP) but it's out
+ of range. */
+ errmsg = _("(DP) offset out of range.");
+ return errmsg;
+ }
+ }
+ }
+
+
+ /* Attempt to parse for SP. ex: mov w, offset(SP)
+ mov offset(SP), w. */
+ afteroffset = strstr (*strp, "(SP)");
+
+ if (afteroffset == NULL)
+ /* Maybe it's in lower case. */
+ afteroffset = strstr (*strp, "(sp)");
+
+ if (afteroffset != NULL)
+ {
+ if (afteroffset == *strp)
+ {
+ /* No offset present. Use 0 by default. */
+ tempvalue = 0;
+ errmsg = NULL;
+ }
+ else
+ errmsg = cgen_parse_address (cd, strp, opindex,
+ BFD_RELOC_IP2K_FR_OFFSET,
+ & result_type, & tempvalue);
+
+ if (errmsg == NULL)
+ {
+ if (tempvalue <= 127)
+ {
+ /* Value is ok. Fix up the first 2 bits and return. */
+ *valuep = 0x0180 | tempvalue;
+ *strp += 4; /* Skip over the (SP) in *strp. */
+ return errmsg;
+ }
+ else
+ {
+ /* Found something there in front of (SP) but it's out
+ of range. */
+ errmsg = _("(SP) offset out of range.");
+ return errmsg;
+ }
+ }
+ }
+
+ /* Attempt to parse as an address. */
+ *strp = old_strp;
+ errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IP2K_FR9,
+ & result_type, & value);
+ if (errmsg == NULL)
+ {
+ *valuep = value;
+
+ /* If a parenthesis is found, warn about invalid form. */
+ if (**strp == '(')
+ errmsg = _("illegal use of parentheses");
+
+ /* If a numeric value is specified, ensure that it is between
+ 1 and 255. */
+ else if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+ {
+ if (value < 0x1 || value > 0xff)
+ errmsg = _("operand out of range (not between 1 and 255)");
+ }
+ }
+ return errmsg;
+}
+
+static const char *
+parse_addr16 (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
+{
+ const char *errmsg;
+ enum cgen_parse_operand_result result_type;
+ bfd_reloc_code_real_type code = BFD_RELOC_NONE;
+ bfd_vma value;
+
+ if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16H)
+ code = BFD_RELOC_IP2K_HI8DATA;
+ else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16L)
+ code = BFD_RELOC_IP2K_LO8DATA;
+ else
+ {
+ /* Something is very wrong. opindex has to be one of the above. */
+ errmsg = _("parse_addr16: invalid opindex.");
+ return errmsg;
+ }
+
+ errmsg = cgen_parse_address (cd, strp, opindex, code,
+ & result_type, & value);
+ if (errmsg == NULL)
+ {
+ /* We either have a relocation or a number now. */
+ if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+ {
+ /* We got a number back. */
+ if (code == BFD_RELOC_IP2K_HI8DATA)
+ value >>= 8;
+ else
+ /* code = BFD_RELOC_IP2K_LOW8DATA. */
+ value &= 0x00FF;
+ }
+ *valuep = value;
+ }
+
+ return errmsg;
+}
+
+static const char *
+parse_addr16_cjp (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
+{
+ const char *errmsg;
+ enum cgen_parse_operand_result result_type;
+ bfd_reloc_code_real_type code = BFD_RELOC_NONE;
+ bfd_vma value;
+
+ if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16CJP)
+ code = BFD_RELOC_IP2K_ADDR16CJP;
+ else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16P)
+ code = BFD_RELOC_IP2K_PAGE3;
+
+ errmsg = cgen_parse_address (cd, strp, opindex, code,
+ & result_type, & value);
+ if (errmsg == NULL)
+ {
+ if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
+ {
+ if ((value & 0x1) == 0) /* If the address is even .... */
+ {
+ if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16CJP)
+ *valuep = (value >> 1) & 0x1FFF; /* Should mask be 1FFF? */
+ else if (opindex == (CGEN_OPERAND_TYPE) IP2K_OPERAND_ADDR16P)
+ *valuep = (value >> 14) & 0x7;
+ }
+ else
+ errmsg = _("Byte address required. - must be even.");
+ }
+ else if (result_type == CGEN_PARSE_OPERAND_RESULT_QUEUED)
+ {
+ /* This will happen for things like (s2-s1) where s2 and s1
+ are labels. */
+ *valuep = value;
+ }
+ else
+ errmsg = _("cgen_parse_address returned a symbol. Literal required.");
+ }
+ return errmsg;
+}
+
+static const char *
+parse_lit8 (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ long *valuep)
+{
+ const char *errmsg;
+ enum cgen_parse_operand_result result_type;
+ bfd_reloc_code_real_type code = BFD_RELOC_NONE;
+ bfd_vma value;
+
+ /* Parse %OP relocating operators. */
+ if (strncmp (*strp, "%bank", 5) == 0)
+ {
+ *strp += 5;
+ code = BFD_RELOC_IP2K_BANK;
+ }
+ else if (strncmp (*strp, "%lo8data", 8) == 0)
+ {
+ *strp += 8;
+ code = BFD_RELOC_IP2K_LO8DATA;
+ }
+ else if (strncmp (*strp, "%hi8data", 8) == 0)
+ {
+ *strp += 8;
+ code = BFD_RELOC_IP2K_HI8DATA;
+ }
+ else if (strncmp (*strp, "%ex8data", 8) == 0)
+ {
+ *strp += 8;
+ code = BFD_RELOC_IP2K_EX8DATA;
+ }
+ else if (strncmp (*strp, "%lo8insn", 8) == 0)
+ {
+ *strp += 8;
+ code = BFD_RELOC_IP2K_LO8INSN;
+ }
+ else if (strncmp (*strp, "%hi8insn", 8) == 0)
+ {
+ *strp += 8;
+ code = BFD_RELOC_IP2K_HI8INSN;
+ }
+
+ /* Parse %op operand. */
+ if (code != BFD_RELOC_NONE)
+ {
+ errmsg = cgen_parse_address (cd, strp, opindex, code,
+ & result_type, & value);
+ if ((errmsg == NULL) &&
+ (result_type != CGEN_PARSE_OPERAND_RESULT_QUEUED))
+ errmsg = _("percent-operator operand is not a symbol");
+
+ *valuep = value;
+ }
+ /* Parse as a number. */
+ else
+ {
+ errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep);
+
+ /* Truncate to eight bits to accept both signed and unsigned input. */
+ if (errmsg == NULL)
+ *valuep &= 0xFF;
+ }
+
+ return errmsg;
+}
+
+static const char *
+parse_bit3 (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
+{
+ const char *errmsg;
+ char mode = 0;
+ long count = 0;
+ unsigned long value;
+
+ if (strncmp (*strp, "%bit", 4) == 0)
+ {
+ *strp += 4;
+ mode = 1;
+ }
+ else if (strncmp (*strp, "%msbbit", 7) == 0)
+ {
+ *strp += 7;
+ mode = 1;
+ }
+ else if (strncmp (*strp, "%lsbbit", 7) == 0)
+ {
+ *strp += 7;
+ mode = 2;
+ }
+
+ errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
+ if (errmsg)
+ return errmsg;
+
+ if (mode)
+ {
+ value = * valuep;
+ if (value == 0)
+ {
+ errmsg = _("Attempt to find bit index of 0");
+ return errmsg;
+ }
+
+ if (mode == 1)
+ {
+ count = 31;
+ while ((value & 0x80000000) == 0)
+ {
+ count--;
+ value <<= 1;
+ }
+ }
+ else if (mode == 2)
+ {
+ count = 0;
+ while ((value & 0x00000001) == 0)
+ {
+ count++;
+ value >>= 1;
+ }
+ }
+
+ *valuep = count;
+ }
+
+ return errmsg;
+}
+
+/* -- dis.c */
+
+static void
+print_fr (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+ const CGEN_KEYWORD_ENTRY *ke;
+ extern CGEN_KEYWORD ip2k_cgen_opval_register_names;
+ long offsettest;
+ long offsetvalue;
+
+ if (value == 0) /* This is (IP). */
+ {
+ (*info->fprintf_func) (info->stream, "%s", "(IP)");
+ return;
+ }
+
+ offsettest = value >> 7;
+ offsetvalue = value & 0x7F;
+
+ /* Check to see if first two bits are 10 -> (DP). */
+ if (offsettest == 2)
+ {
+ if (offsetvalue == 0)
+ (*info->fprintf_func) (info->stream, "%s","(DP)");
+ else
+ (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue, "(DP)");
+ return;
+ }
+
+ /* Check to see if first two bits are 11 -> (SP). */
+ if (offsettest == 3)
+ {
+ if (offsetvalue == 0)
+ (*info->fprintf_func) (info->stream, "%s", "(SP)");
+ else
+ (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue,"(SP)");
+ return;
+ }
+
+ /* Attempt to print as a register keyword. */
+ ke = cgen_keyword_lookup_value (& ip2k_cgen_opval_register_names, value);
+
+ if (ke != NULL)
+ (*info->fprintf_func) (info->stream, "%s", ke->name);
+ else
+ /* Print as an address literal. */
+ (*info->fprintf_func) (info->stream, "$%02lx", value);
+}
+
+static void
+print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ (*info->fprintf_func) (info->stream, "$%lx", value);
+}
+
+static void
+print_dollarhex8 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ (*info->fprintf_func) (info->stream, "$%02lx", value);
+}
+
+static void
+print_dollarhex_addr16h (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ /* This is a loadh instruction. Shift the value to the left
+ by 8 bits so that disassembled code will reassemble properly. */
+ value = ((value << 8) & 0xFF00);
+
+ (*info->fprintf_func) (info->stream, "$%04lx", value);
+}
+
+static void
+print_dollarhex_addr16l (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ (*info->fprintf_func) (info->stream, "$%04lx", value);
+}
+
+static void
+print_dollarhex_p (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ value = ((value << 14) & 0x1C000);
+ ;value = (value & 0x1FFFF);
+ (*info->fprintf_func) (info->stream, "$%05lx", value);
+}
+
+static void
+print_dollarhex_cj (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ value = ((value << 1) & 0x1FFFF);
+ (*info->fprintf_func) (info->stream, "$%05lx", value);
+}
+
+static void
+print_decimal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ (*info->fprintf_func) (info->stream, "%ld", value);
+}
+
+
+
+/* -- */
+