diff options
Diffstat (limited to 'opcodes/lm32-ibld.c')
| -rw-r--r-- | opcodes/lm32-ibld.c | 1061 |
1 files changed, 1061 insertions, 0 deletions
diff --git a/opcodes/lm32-ibld.c b/opcodes/lm32-ibld.c new file mode 100644 index 0000000..52fbc29 --- /dev/null +++ b/opcodes/lm32-ibld.c @@ -0,0 +1,1061 @@ +/* Instruction building/extraction support for lm32. -*- C -*- + + THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator. + - the resultant file is machine generated, cgen-ibld.in isn't + + Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2006, 2007, + 2008 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 "dis-asm.h" +#include "bfd.h" +#include "symcat.h" +#include "lm32-desc.h" +#include "lm32-opc.h" +#include "opintl.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)) + +/* Used by the ifield rtx function. */ +#define FLD(f) (fields->f) + +static const char * insert_normal + (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int, + unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR); +static const char * insert_insn_normal + (CGEN_CPU_DESC, const CGEN_INSN *, + CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); +static int extract_normal + (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, + unsigned int, unsigned int, unsigned int, unsigned int, + unsigned int, unsigned int, bfd_vma, long *); +static int extract_insn_normal + (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, + CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); +#if CGEN_INT_INSN_P +static void put_insn_int_value + (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT); +#endif +#if ! CGEN_INT_INSN_P +static CGEN_INLINE void insert_1 + (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *); +static CGEN_INLINE int fill_cache + (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma); +static CGEN_INLINE long extract_1 + (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma); +#endif + +/* Operand insertion. */ + +#if ! CGEN_INT_INSN_P + +/* Subroutine of insert_normal. */ + +static CGEN_INLINE void +insert_1 (CGEN_CPU_DESC cd, + unsigned long value, + int start, + int length, + int word_length, + unsigned char *bufp) +{ + unsigned long x,mask; + int shift; + + x = cgen_get_insn_value (cd, bufp, word_length); + + /* Written this way to avoid undefined behaviour. */ + mask = (((1L << (length - 1)) - 1) << 1) | 1; + if (CGEN_INSN_LSB0_P) + shift = (start + 1) - length; + else + shift = (word_length - (start + length)); + x = (x & ~(mask << shift)) | ((value & mask) << shift); + + cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x); +} + +#endif /* ! CGEN_INT_INSN_P */ + +/* Default insertion routine. + + ATTRS is a mask of the boolean attributes. + WORD_OFFSET is the offset in bits from the start of the insn of the value. + WORD_LENGTH is the length of the word in bits in which the value resides. + START is the starting bit number in the word, architecture origin. + LENGTH is the length of VALUE in bits. + TOTAL_LENGTH is the total length of the insn in bits. + + The result is an error message or NULL if success. */ + +/* ??? This duplicates functionality with bfd's howto table and + bfd_install_relocation. */ +/* ??? This doesn't handle bfd_vma's. Create another function when + necessary. */ + +static const char * +insert_normal (CGEN_CPU_DESC cd, + long value, + unsigned int attrs, + unsigned int word_offset, + unsigned int start, + unsigned int length, + unsigned int word_length, + unsigned int total_length, + CGEN_INSN_BYTES_PTR buffer) +{ + static char errbuf[100]; + /* Written this way to avoid undefined behaviour. */ + unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; + + /* If LENGTH is zero, this operand doesn't contribute to the value. */ + if (length == 0) + return NULL; + + if (word_length > 32) + abort (); + + /* For architectures with insns smaller than the base-insn-bitsize, + word_length may be too big. */ + if (cd->min_insn_bitsize < cd->base_insn_bitsize) + { + if (word_offset == 0 + && word_length > total_length) + word_length = total_length; + } + + /* Ensure VALUE will fit. */ + if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT)) + { + long minval = - (1L << (length - 1)); + unsigned long maxval = mask; + + if ((value > 0 && (unsigned long) value > maxval) + || value < minval) + { + /* xgettext:c-format */ + sprintf (errbuf, + _("operand out of range (%ld not between %ld and %lu)"), + value, minval, maxval); + return errbuf; + } + } + else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)) + { + unsigned long maxval = mask; + unsigned long val = (unsigned long) value; + + /* For hosts with a word size > 32 check to see if value has been sign + extended beyond 32 bits. If so then ignore these higher sign bits + as the user is attempting to store a 32-bit signed value into an + unsigned 32-bit field which is allowed. */ + if (sizeof (unsigned long) > 4 && ((value >> 32) == -1)) + val &= 0xFFFFFFFF; + + if (val > maxval) + { + /* xgettext:c-format */ + sprintf (errbuf, + _("operand out of range (0x%lx not between 0 and 0x%lx)"), + val, maxval); + return errbuf; + } + } + else + { + if (! cgen_signed_overflow_ok_p (cd)) + { + long minval = - (1L << (length - 1)); + long maxval = (1L << (length - 1)) - 1; + + if (value < minval || value > maxval) + { + sprintf + /* xgettext:c-format */ + (errbuf, _("operand out of range (%ld not between %ld and %ld)"), + value, minval, maxval); + return errbuf; + } + } + } + +#if CGEN_INT_INSN_P + + { + int shift; + + if (CGEN_INSN_LSB0_P) + shift = (word_offset + start + 1) - length; + else + shift = total_length - (word_offset + start + length); + *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); + } + +#else /* ! CGEN_INT_INSN_P */ + + { + unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; + + insert_1 (cd, value, start, length, word_length, bufp); + } + +#endif /* ! CGEN_INT_INSN_P */ + + return NULL; +} + +/* Default insn builder (insert handler). + The instruction is recorded in CGEN_INT_INSN_P byte order (meaning + that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is + recorded in host byte order, otherwise BUFFER is an array of bytes + and the value is recorded in target byte order). + The result is an error message or NULL if success. */ + +static const char * +insert_insn_normal (CGEN_CPU_DESC cd, + const CGEN_INSN * insn, + CGEN_FIELDS * fields, + CGEN_INSN_BYTES_PTR buffer, + bfd_vma pc) +{ + const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); + unsigned long value; + const CGEN_SYNTAX_CHAR_TYPE * syn; + + CGEN_INIT_INSERT (cd); + value = CGEN_INSN_BASE_VALUE (insn); + + /* If we're recording insns as numbers (rather than a string of bytes), + target byte order handling is deferred until later. */ + +#if CGEN_INT_INSN_P + + put_insn_int_value (cd, buffer, cd->base_insn_bitsize, + CGEN_FIELDS_BITSIZE (fields), value); + +#else + + cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, + (unsigned) CGEN_FIELDS_BITSIZE (fields)), + value); + +#endif /* ! CGEN_INT_INSN_P */ + + /* ??? It would be better to scan the format's fields. + Still need to be able to insert a value based on the operand though; + e.g. storing a branch displacement that got resolved later. + Needs more thought first. */ + + for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) + { + const char *errmsg; + + if (CGEN_SYNTAX_CHAR_P (* syn)) + continue; + + errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), + fields, buffer, pc); + if (errmsg) + return errmsg; + } + + return NULL; +} + +#if CGEN_INT_INSN_P +/* Cover function to store an insn value into an integral insn. Must go here + because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ + +static void +put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + CGEN_INSN_BYTES_PTR buf, + int length, + int insn_length, + CGEN_INSN_INT value) +{ + /* For architectures with insns smaller than the base-insn-bitsize, + length may be too big. */ + if (length > insn_length) + *buf = value; + else + { + int shift = insn_length - length; + /* Written this way to avoid undefined behaviour. */ + CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; + + *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); + } +} +#endif + +/* Operand extraction. */ + +#if ! CGEN_INT_INSN_P + +/* Subroutine of extract_normal. + Ensure sufficient bytes are cached in EX_INFO. + OFFSET is the offset in bytes from the start of the insn of the value. + BYTES is the length of the needed value. + Returns 1 for success, 0 for failure. */ + +static CGEN_INLINE int +fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + CGEN_EXTRACT_INFO *ex_info, + int offset, + int bytes, + bfd_vma pc) +{ + /* It's doubtful that the middle part has already been fetched so + we don't optimize that case. kiss. */ + unsigned int mask; + disassemble_info *info = (disassemble_info *) ex_info->dis_info; + + /* First do a quick check. */ + mask = (1 << bytes) - 1; + if (((ex_info->valid >> offset) & mask) == mask) + return 1; + + /* Search for the first byte we need to read. */ + for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) + if (! (mask & ex_info->valid)) + break; + + if (bytes) + { + int status; + + pc += offset; + status = (*info->read_memory_func) + (pc, ex_info->insn_bytes + offset, bytes, info); + + if (status != 0) + { + (*info->memory_error_func) (status, pc, info); + return 0; + } + + ex_info->valid |= ((1 << bytes) - 1) << offset; + } + + return 1; +} + +/* Subroutine of extract_normal. */ + +static CGEN_INLINE long +extract_1 (CGEN_CPU_DESC cd, + CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, + int start, + int length, + int word_length, + unsigned char *bufp, + bfd_vma pc ATTRIBUTE_UNUSED) +{ + unsigned long x; + int shift; + + x = cgen_get_insn_value (cd, bufp, word_length); + + if (CGEN_INSN_LSB0_P) + shift = (start + 1) - length; + else + shift = (word_length - (start + length)); + return x >> shift; +} + +#endif /* ! CGEN_INT_INSN_P */ + +/* Default extraction routine. + + INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, + or sometimes less for cases like the m32r where the base insn size is 32 + but some insns are 16 bits. + ATTRS is a mask of the boolean attributes. We only need `SIGNED', + but for generality we take a bitmask of all of them. + WORD_OFFSET is the offset in bits from the start of the insn of the value. + WORD_LENGTH is the length of the word in bits in which the value resides. + START is the starting bit number in the word, architecture origin. + LENGTH is the length of VALUE in bits. + TOTAL_LENGTH is the total length of the insn in bits. + + Returns 1 for success, 0 for failure. */ + +/* ??? The return code isn't properly used. wip. */ + +/* ??? This doesn't handle bfd_vma's. Create another function when + necessary. */ + +static int +extract_normal (CGEN_CPU_DESC cd, +#if ! CGEN_INT_INSN_P + CGEN_EXTRACT_INFO *ex_info, +#else + CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, +#endif + CGEN_INSN_INT insn_value, + unsigned int attrs, + unsigned int word_offset, + unsigned int start, + unsigned int length, + unsigned int word_length, + unsigned int total_length, +#if ! CGEN_INT_INSN_P + bfd_vma pc, +#else + bfd_vma pc ATTRIBUTE_UNUSED, +#endif + long *valuep) +{ + long value, mask; + + /* If LENGTH is zero, this operand doesn't contribute to the value + so give it a standard value of zero. */ + if (length == 0) + { + *valuep = 0; + return 1; + } + + if (word_length > 32) + abort (); + + /* For architectures with insns smaller than the insn-base-bitsize, + word_length may be too big. */ + if (cd->min_insn_bitsize < cd->base_insn_bitsize) + { + if (word_offset + word_length > total_length) + word_length = total_length - word_offset; + } + + /* Does the value reside in INSN_VALUE, and at the right alignment? */ + + if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) + { + if (CGEN_INSN_LSB0_P) + value = insn_value >> ((word_offset + start + 1) - length); + else + value = insn_value >> (total_length - ( word_offset + start + length)); + } + +#if ! CGEN_INT_INSN_P + + else + { + unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; + + if (word_length > 32) + abort (); + + if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) + return 0; + + value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); + } + +#endif /* ! CGEN_INT_INSN_P */ + + /* Written this way to avoid undefined behaviour. */ + mask = (((1L << (length - 1)) - 1) << 1) | 1; + + value &= mask; + /* sign extend? */ + if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) + && (value & (1L << (length - 1)))) + value |= ~mask; + + *valuep = value; + + return 1; +} + +/* Default insn extractor. + + INSN_VALUE is the first base_insn_bitsize bits, translated to host order. + The extracted fields are stored in FIELDS. + EX_INFO is used to handle reading variable length insns. + Return the length of the insn in bits, or 0 if no match, + or -1 if an error occurs fetching data (memory_error_func will have + been called). */ + +static int +extract_insn_normal (CGEN_CPU_DESC cd, + const CGEN_INSN *insn, + CGEN_EXTRACT_INFO *ex_info, + CGEN_INSN_INT insn_value, + CGEN_FIELDS *fields, + bfd_vma pc) +{ + const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); + const CGEN_SYNTAX_CHAR_TYPE *syn; + + CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); + + CGEN_INIT_EXTRACT (cd); + + for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) + { + int length; + + if (CGEN_SYNTAX_CHAR_P (*syn)) + continue; + + length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), + ex_info, insn_value, fields, pc); + if (length <= 0) + return length; + } + + /* We recognized and successfully extracted this insn. */ + return CGEN_INSN_BITSIZE (insn); +} + +/* Machine generated code added here. */ + +const char * lm32_cgen_insert_operand + (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); + +/* Main entry point for operand insertion. + + 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. It's also needed by GAS to insert operands that couldn't be + resolved during parsing. */ + +const char * +lm32_cgen_insert_operand (CGEN_CPU_DESC cd, + int opindex, + CGEN_FIELDS * fields, + CGEN_INSN_BYTES_PTR buffer, + bfd_vma pc ATTRIBUTE_UNUSED) +{ + const char * errmsg = NULL; + unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); + + switch (opindex) + { + case LM32_OPERAND_BRANCH : + { + long value = fields->f_branch; + value = ((int) (((value) - (pc))) >> (2)); + errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, buffer); + } + break; + case LM32_OPERAND_CALL : + { + long value = fields->f_call; + value = ((int) (((value) - (pc))) >> (2)); + errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer); + } + break; + case LM32_OPERAND_CSR : + errmsg = insert_normal (cd, fields->f_csr, 0, 0, 25, 5, 32, total_length, buffer); + break; + case LM32_OPERAND_EXCEPTION : + errmsg = insert_normal (cd, fields->f_exception, 0, 0, 25, 26, 32, total_length, buffer); + break; + case LM32_OPERAND_GOT16 : + errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_GOTOFFHI16 : + errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_GOTOFFLO16 : + errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_GP16 : + errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_HI16 : + errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_IMM : + errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_LO16 : + errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_R0 : + errmsg = insert_normal (cd, fields->f_r0, 0, 0, 25, 5, 32, total_length, buffer); + break; + case LM32_OPERAND_R1 : + errmsg = insert_normal (cd, fields->f_r1, 0, 0, 20, 5, 32, total_length, buffer); + break; + case LM32_OPERAND_R2 : + errmsg = insert_normal (cd, fields->f_r2, 0, 0, 15, 5, 32, total_length, buffer); + break; + case LM32_OPERAND_SHIFT : + errmsg = insert_normal (cd, fields->f_shift, 0, 0, 4, 5, 32, total_length, buffer); + break; + case LM32_OPERAND_UIMM : + errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer); + break; + case LM32_OPERAND_USER : + errmsg = insert_normal (cd, fields->f_user, 0, 0, 10, 11, 32, total_length, buffer); + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while building insn.\n"), + opindex); + abort (); + } + + return errmsg; +} + +int lm32_cgen_extract_operand + (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); + +/* Main entry point for operand extraction. + The result is <= 0 for error, >0 for success. + ??? Actual values aren't well defined right now. + + 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 `print_insn_normal', but keeping it + separate makes clear the interface between `print_insn_normal' and each of + the handlers. */ + +int +lm32_cgen_extract_operand (CGEN_CPU_DESC cd, + int opindex, + CGEN_EXTRACT_INFO *ex_info, + CGEN_INSN_INT insn_value, + CGEN_FIELDS * fields, + bfd_vma pc) +{ + /* Assume success (for those operands that are nops). */ + int length = 1; + unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); + + switch (opindex) + { + case LM32_OPERAND_BRANCH : + { + long value; + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, pc, & value); + value = ((pc) + (((int) (((value) << (16))) >> (14)))); + fields->f_branch = value; + } + break; + case LM32_OPERAND_CALL : + { + long value; + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, pc, & value); + value = ((pc) + (((int) (((value) << (6))) >> (4)))); + fields->f_call = value; + } + break; + case LM32_OPERAND_CSR : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_csr); + break; + case LM32_OPERAND_EXCEPTION : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 26, 32, total_length, pc, & fields->f_exception); + break; + case LM32_OPERAND_GOT16 : + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm); + break; + case LM32_OPERAND_GOTOFFHI16 : + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm); + break; + case LM32_OPERAND_GOTOFFLO16 : + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm); + break; + case LM32_OPERAND_GP16 : + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm); + break; + case LM32_OPERAND_HI16 : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm); + break; + case LM32_OPERAND_IMM : + length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm); + break; + case LM32_OPERAND_LO16 : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm); + break; + case LM32_OPERAND_R0 : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r0); + break; + case LM32_OPERAND_R1 : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r1); + break; + case LM32_OPERAND_R2 : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r2); + break; + case LM32_OPERAND_SHIFT : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 5, 32, total_length, pc, & fields->f_shift); + break; + case LM32_OPERAND_UIMM : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm); + break; + case LM32_OPERAND_USER : + length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_user); + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), + opindex); + abort (); + } + + return length; +} + +cgen_insert_fn * const lm32_cgen_insert_handlers[] = +{ + insert_insn_normal, +}; + +cgen_extract_fn * const lm32_cgen_extract_handlers[] = +{ + extract_insn_normal, +}; + +int lm32_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); +bfd_vma lm32_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); + +/* Getting values from cgen_fields is handled by a collection of functions. + They are distinguished by the type of the VALUE argument they return. + TODO: floating point, inlining support, remove cases where result type + not appropriate. */ + +int +lm32_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + int opindex, + const CGEN_FIELDS * fields) +{ + int value; + + switch (opindex) + { + case LM32_OPERAND_BRANCH : + value = fields->f_branch; + break; + case LM32_OPERAND_CALL : + value = fields->f_call; + break; + case LM32_OPERAND_CSR : + value = fields->f_csr; + break; + case LM32_OPERAND_EXCEPTION : + value = fields->f_exception; + break; + case LM32_OPERAND_GOT16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GOTOFFHI16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GOTOFFLO16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GP16 : + value = fields->f_imm; + break; + case LM32_OPERAND_HI16 : + value = fields->f_uimm; + break; + case LM32_OPERAND_IMM : + value = fields->f_imm; + break; + case LM32_OPERAND_LO16 : + value = fields->f_uimm; + break; + case LM32_OPERAND_R0 : + value = fields->f_r0; + break; + case LM32_OPERAND_R1 : + value = fields->f_r1; + break; + case LM32_OPERAND_R2 : + value = fields->f_r2; + break; + case LM32_OPERAND_SHIFT : + value = fields->f_shift; + break; + case LM32_OPERAND_UIMM : + value = fields->f_uimm; + break; + case LM32_OPERAND_USER : + value = fields->f_user; + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), + opindex); + abort (); + } + + return value; +} + +bfd_vma +lm32_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + int opindex, + const CGEN_FIELDS * fields) +{ + bfd_vma value; + + switch (opindex) + { + case LM32_OPERAND_BRANCH : + value = fields->f_branch; + break; + case LM32_OPERAND_CALL : + value = fields->f_call; + break; + case LM32_OPERAND_CSR : + value = fields->f_csr; + break; + case LM32_OPERAND_EXCEPTION : + value = fields->f_exception; + break; + case LM32_OPERAND_GOT16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GOTOFFHI16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GOTOFFLO16 : + value = fields->f_imm; + break; + case LM32_OPERAND_GP16 : + value = fields->f_imm; + break; + case LM32_OPERAND_HI16 : + value = fields->f_uimm; + break; + case LM32_OPERAND_IMM : + value = fields->f_imm; + break; + case LM32_OPERAND_LO16 : + value = fields->f_uimm; + break; + case LM32_OPERAND_R0 : + value = fields->f_r0; + break; + case LM32_OPERAND_R1 : + value = fields->f_r1; + break; + case LM32_OPERAND_R2 : + value = fields->f_r2; + break; + case LM32_OPERAND_SHIFT : + value = fields->f_shift; + break; + case LM32_OPERAND_UIMM : + value = fields->f_uimm; + break; + case LM32_OPERAND_USER : + value = fields->f_user; + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), + opindex); + abort (); + } + + return value; +} + +void lm32_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); +void lm32_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); + +/* Stuffing values in cgen_fields is handled by a collection of functions. + They are distinguished by the type of the VALUE argument they accept. + TODO: floating point, inlining support, remove cases where argument type + not appropriate. */ + +void +lm32_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + int opindex, + CGEN_FIELDS * fields, + int value) +{ + switch (opindex) + { + case LM32_OPERAND_BRANCH : + fields->f_branch = value; + break; + case LM32_OPERAND_CALL : + fields->f_call = value; + break; + case LM32_OPERAND_CSR : + fields->f_csr = value; + break; + case LM32_OPERAND_EXCEPTION : + fields->f_exception = value; + break; + case LM32_OPERAND_GOT16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GOTOFFHI16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GOTOFFLO16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GP16 : + fields->f_imm = value; + break; + case LM32_OPERAND_HI16 : + fields->f_uimm = value; + break; + case LM32_OPERAND_IMM : + fields->f_imm = value; + break; + case LM32_OPERAND_LO16 : + fields->f_uimm = value; + break; + case LM32_OPERAND_R0 : + fields->f_r0 = value; + break; + case LM32_OPERAND_R1 : + fields->f_r1 = value; + break; + case LM32_OPERAND_R2 : + fields->f_r2 = value; + break; + case LM32_OPERAND_SHIFT : + fields->f_shift = value; + break; + case LM32_OPERAND_UIMM : + fields->f_uimm = value; + break; + case LM32_OPERAND_USER : + fields->f_user = value; + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), + opindex); + abort (); + } +} + +void +lm32_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, + int opindex, + CGEN_FIELDS * fields, + bfd_vma value) +{ + switch (opindex) + { + case LM32_OPERAND_BRANCH : + fields->f_branch = value; + break; + case LM32_OPERAND_CALL : + fields->f_call = value; + break; + case LM32_OPERAND_CSR : + fields->f_csr = value; + break; + case LM32_OPERAND_EXCEPTION : + fields->f_exception = value; + break; + case LM32_OPERAND_GOT16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GOTOFFHI16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GOTOFFLO16 : + fields->f_imm = value; + break; + case LM32_OPERAND_GP16 : + fields->f_imm = value; + break; + case LM32_OPERAND_HI16 : + fields->f_uimm = value; + break; + case LM32_OPERAND_IMM : + fields->f_imm = value; + break; + case LM32_OPERAND_LO16 : + fields->f_uimm = value; + break; + case LM32_OPERAND_R0 : + fields->f_r0 = value; + break; + case LM32_OPERAND_R1 : + fields->f_r1 = value; + break; + case LM32_OPERAND_R2 : + fields->f_r2 = value; + break; + case LM32_OPERAND_SHIFT : + fields->f_shift = value; + break; + case LM32_OPERAND_UIMM : + fields->f_uimm = value; + break; + case LM32_OPERAND_USER : + fields->f_user = value; + break; + + default : + /* xgettext:c-format */ + fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), + opindex); + abort (); + } +} + +/* Function to call before using the instruction builder tables. */ + +void +lm32_cgen_init_ibld_table (CGEN_CPU_DESC cd) +{ + cd->insert_handlers = & lm32_cgen_insert_handlers[0]; + cd->extract_handlers = & lm32_cgen_extract_handlers[0]; + + cd->insert_operand = lm32_cgen_insert_operand; + cd->extract_operand = lm32_cgen_extract_operand; + + cd->get_int_operand = lm32_cgen_get_int_operand; + cd->set_int_operand = lm32_cgen_set_int_operand; + cd->get_vma_operand = lm32_cgen_get_vma_operand; + cd->set_vma_operand = lm32_cgen_set_vma_operand; +} |