diff options
Diffstat (limited to 'opcodes/arc-opc.c')
| -rw-r--r-- | opcodes/arc-opc.c | 1817 |
1 files changed, 0 insertions, 1817 deletions
diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c deleted file mode 100644 index b05edf00126..00000000000 --- a/opcodes/arc-opc.c +++ /dev/null @@ -1,1817 +0,0 @@ -/* Opcode table for the ARC. - Copyright 1994, 1995, 1997, 1998, 2000, 2001 - Free Software Foundation, Inc. - Contributed by Doug Evans (dje@cygnus.com). - - 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. - - 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 <stdio.h> -#include "ansidecl.h" -#include "opcode/arc.h" - -#define INSERT_FN(fn) \ -static arc_insn fn PARAMS ((arc_insn, const struct arc_operand *, \ - int, const struct arc_operand_value *, long, \ - const char **)) -#define EXTRACT_FN(fn) \ -static long fn PARAMS ((arc_insn *, const struct arc_operand *, \ - int, const struct arc_operand_value **, int *)) - -INSERT_FN (insert_reg); -INSERT_FN (insert_shimmfinish); -INSERT_FN (insert_limmfinish); -INSERT_FN (insert_offset); -INSERT_FN (insert_base); -INSERT_FN (insert_st_syntax); -INSERT_FN (insert_ld_syntax); -INSERT_FN (insert_addr_wb); -INSERT_FN (insert_flag); -INSERT_FN (insert_nullify); -INSERT_FN (insert_flagfinish); -INSERT_FN (insert_cond); -INSERT_FN (insert_forcelimm); -INSERT_FN (insert_reladdr); -INSERT_FN (insert_absaddr); -INSERT_FN (insert_jumpflags); -INSERT_FN (insert_unopmacro); - -EXTRACT_FN (extract_reg); -EXTRACT_FN (extract_ld_offset); -EXTRACT_FN (extract_ld_syntax); -EXTRACT_FN (extract_st_offset); -EXTRACT_FN (extract_st_syntax); -EXTRACT_FN (extract_flag); -EXTRACT_FN (extract_cond); -EXTRACT_FN (extract_reladdr); -EXTRACT_FN (extract_jumpflags); -EXTRACT_FN (extract_unopmacro); - -enum operand {OP_NONE,OP_REG,OP_SHIMM,OP_LIMM}; - -#define OPERANDS 3 - -enum operand ls_operand[OPERANDS]; - -#define LS_VALUE 0 -#define LS_DEST 0 -#define LS_BASE 1 -#define LS_OFFSET 2 - -/* Various types of ARC operands, including insn suffixes. */ - -/* Insn format values: - - 'a' REGA register A field - 'b' REGB register B field - 'c' REGC register C field - 'S' SHIMMFINISH finish inserting a shimm value - 'L' LIMMFINISH finish inserting a limm value - 'o' OFFSET offset in st insns - 'O' OFFSET offset in ld insns - '0' SYNTAX_ST_NE enforce store insn syntax, no errors - '1' SYNTAX_LD_NE enforce load insn syntax, no errors - '2' SYNTAX_ST enforce store insn syntax, errors, last pattern only - '3' SYNTAX_LD enforce load insn syntax, errors, last pattern only - 's' BASE base in st insn - 'f' FLAG F flag - 'F' FLAGFINISH finish inserting the F flag - 'G' FLAGINSN insert F flag in "flag" insn - 'n' DELAY N field (nullify field) - 'q' COND condition code field - 'Q' FORCELIMM set `cond_p' to 1 to ensure a constant is a limm - 'B' BRANCH branch address (22 bit pc relative) - 'J' JUMP jump address (26 bit absolute) - 'j' JUMPFLAGS optional high order bits of 'J' - 'z' SIZE1 size field in ld a,[b,c] - 'Z' SIZE10 size field in ld a,[b,shimm] - 'y' SIZE22 size field in st c,[b,shimm] - 'x' SIGN0 sign extend field ld a,[b,c] - 'X' SIGN9 sign extend field ld a,[b,shimm] - 'w' ADDRESS3 write-back field in ld a,[b,c] - 'W' ADDRESS12 write-back field in ld a,[b,shimm] - 'v' ADDRESS24 write-back field in st c,[b,shimm] - 'e' CACHEBYPASS5 cache bypass in ld a,[b,c] - 'E' CACHEBYPASS14 cache bypass in ld a,[b,shimm] - 'D' CACHEBYPASS26 cache bypass in st c,[b,shimm] - 'U' UNOPMACRO fake operand to copy REGB to REGC for unop macros - - The following modifiers may appear between the % and char (eg: %.f): - - '.' MODDOT '.' prefix must be present - 'r' REG generic register value, for register table - 'A' AUXREG auxiliary register in lr a,[b], sr c,[b] - - Fields are: - - CHAR BITS SHIFT FLAGS INSERT_FN EXTRACT_FN */ - -const struct arc_operand arc_operands[] = -{ -/* place holder (??? not sure if needed). */ -#define UNUSED 0 - { 0, 0, 0, 0, 0, 0 }, - -/* register A or shimm/limm indicator. */ -#define REGA (UNUSED + 1) - { 'a', 6, ARC_SHIFT_REGA, ARC_OPERAND_SIGNED | ARC_OPERAND_ERROR, insert_reg, extract_reg }, - -/* register B or shimm/limm indicator. */ -#define REGB (REGA + 1) - { 'b', 6, ARC_SHIFT_REGB, ARC_OPERAND_SIGNED | ARC_OPERAND_ERROR, insert_reg, extract_reg }, - -/* register C or shimm/limm indicator. */ -#define REGC (REGB + 1) - { 'c', 6, ARC_SHIFT_REGC, ARC_OPERAND_SIGNED | ARC_OPERAND_ERROR, insert_reg, extract_reg }, - -/* fake operand used to insert shimm value into most instructions. */ -#define SHIMMFINISH (REGC + 1) - { 'S', 9, 0, ARC_OPERAND_SIGNED + ARC_OPERAND_FAKE, insert_shimmfinish, 0 }, - -/* fake operand used to insert limm value into most instructions. */ -#define LIMMFINISH (SHIMMFINISH + 1) - { 'L', 32, 32, ARC_OPERAND_ADDRESS + ARC_OPERAND_LIMM + ARC_OPERAND_FAKE, insert_limmfinish, 0 }, - -/* shimm operand when there is no reg indicator (st). */ -#define ST_OFFSET (LIMMFINISH + 1) - { 'o', 9, 0, ARC_OPERAND_LIMM | ARC_OPERAND_SIGNED | ARC_OPERAND_STORE, insert_offset, extract_st_offset }, - -/* shimm operand when there is no reg indicator (ld). */ -#define LD_OFFSET (ST_OFFSET + 1) - { 'O', 9, 0,ARC_OPERAND_LIMM | ARC_OPERAND_SIGNED | ARC_OPERAND_LOAD, insert_offset, extract_ld_offset }, - -/* operand for base. */ -#define BASE (LD_OFFSET + 1) - { 's', 6, ARC_SHIFT_REGB, ARC_OPERAND_LIMM | ARC_OPERAND_SIGNED, insert_base, extract_reg}, - -/* 0 enforce syntax for st insns. */ -#define SYNTAX_ST_NE (BASE + 1) - { '0', 9, 0, ARC_OPERAND_FAKE, insert_st_syntax, extract_st_syntax }, - -/* 1 enforce syntax for ld insns. */ -#define SYNTAX_LD_NE (SYNTAX_ST_NE + 1) - { '1', 9, 0, ARC_OPERAND_FAKE, insert_ld_syntax, extract_ld_syntax }, - -/* 0 enforce syntax for st insns. */ -#define SYNTAX_ST (SYNTAX_LD_NE + 1) - { '2', 9, 0, ARC_OPERAND_FAKE | ARC_OPERAND_ERROR, insert_st_syntax, extract_st_syntax }, - -/* 0 enforce syntax for ld insns. */ -#define SYNTAX_LD (SYNTAX_ST + 1) - { '3', 9, 0, ARC_OPERAND_FAKE | ARC_OPERAND_ERROR, insert_ld_syntax, extract_ld_syntax }, - -/* flag update bit (insertion is defered until we know how). */ -#define FLAG (SYNTAX_LD + 1) - { 'f', 1, 8, ARC_OPERAND_SUFFIX, insert_flag, extract_flag }, - -/* fake utility operand to finish 'f' suffix handling. */ -#define FLAGFINISH (FLAG + 1) - { 'F', 1, 8, ARC_OPERAND_FAKE, insert_flagfinish, 0 }, - -/* fake utility operand to set the 'f' flag for the "flag" insn. */ -#define FLAGINSN (FLAGFINISH + 1) - { 'G', 1, 8, ARC_OPERAND_FAKE, insert_flag, 0 }, - -/* branch delay types. */ -#define DELAY (FLAGINSN + 1) - { 'n', 2, 5, ARC_OPERAND_SUFFIX , insert_nullify, 0 }, - -/* conditions. */ -#define COND (DELAY + 1) - { 'q', 5, 0, ARC_OPERAND_SUFFIX, insert_cond, extract_cond }, - -/* set `cond_p' to 1 to ensure a constant is treated as a limm. */ -#define FORCELIMM (COND + 1) - { 'Q', 0, 0, ARC_OPERAND_FAKE, insert_forcelimm, 0 }, - -/* branch address; b, bl, and lp insns. */ -#define BRANCH (FORCELIMM + 1) - { 'B', 20, 7, (ARC_OPERAND_RELATIVE_BRANCH + ARC_OPERAND_SIGNED) | ARC_OPERAND_ERROR, insert_reladdr, extract_reladdr }, - -/* jump address; j insn (this is basically the same as 'L' except that the - value is right shifted by 2). */ -#define JUMP (BRANCH + 1) - { 'J', 24, 32, ARC_OPERAND_ERROR | (ARC_OPERAND_ABSOLUTE_BRANCH + ARC_OPERAND_LIMM + ARC_OPERAND_FAKE), insert_absaddr, 0 }, - -/* jump flags; j{,l} insn value or'ed into 'J' addr for flag values. */ -#define JUMPFLAGS (JUMP + 1) - { 'j', 6, 26, ARC_OPERAND_JUMPFLAGS | ARC_OPERAND_ERROR, insert_jumpflags, extract_jumpflags }, - -/* size field, stored in bit 1,2. */ -#define SIZE1 (JUMPFLAGS + 1) - { 'z', 2, 1, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* size field, stored in bit 10,11. */ -#define SIZE10 (SIZE1 + 1) - { 'Z', 2, 10, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* size field, stored in bit 22,23. */ -#define SIZE22 (SIZE10 + 1) - { 'y', 2, 22, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* sign extend field, stored in bit 0. */ -#define SIGN0 (SIZE22 + 1) - { 'x', 1, 0, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* sign extend field, stored in bit 9. */ -#define SIGN9 (SIGN0 + 1) - { 'X', 1, 9, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* address write back, stored in bit 3. */ -#define ADDRESS3 (SIGN9 + 1) - { 'w', 1, 3, ARC_OPERAND_SUFFIX, insert_addr_wb, 0}, - -/* address write back, stored in bit 12. */ -#define ADDRESS12 (ADDRESS3 + 1) - { 'W', 1, 12, ARC_OPERAND_SUFFIX, insert_addr_wb, 0}, - -/* address write back, stored in bit 24. */ -#define ADDRESS24 (ADDRESS12 + 1) - { 'v', 1, 24, ARC_OPERAND_SUFFIX, insert_addr_wb, 0}, - -/* cache bypass, stored in bit 5. */ -#define CACHEBYPASS5 (ADDRESS24 + 1) - { 'e', 1, 5, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* cache bypass, stored in bit 14. */ -#define CACHEBYPASS14 (CACHEBYPASS5 + 1) - { 'E', 1, 14, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* cache bypass, stored in bit 26. */ -#define CACHEBYPASS26 (CACHEBYPASS14 + 1) - { 'D', 1, 26, ARC_OPERAND_SUFFIX, 0, 0 }, - -/* unop macro, used to copy REGB to REGC. */ -#define UNOPMACRO (CACHEBYPASS26 + 1) - { 'U', 6, ARC_SHIFT_REGC, ARC_OPERAND_FAKE, insert_unopmacro, extract_unopmacro }, - -/* '.' modifier ('.' required). */ -#define MODDOT (UNOPMACRO + 1) - { '.', 1, 0, ARC_MOD_DOT, 0, 0 }, - -/* Dummy 'r' modifier for the register table. - It's called a "dummy" because there's no point in inserting an 'r' into all - the %a/%b/%c occurrences in the insn table. */ -#define REG (MODDOT + 1) - { 'r', 6, 0, ARC_MOD_REG, 0, 0 }, - -/* Known auxiliary register modifier (stored in shimm field). */ -#define AUXREG (REG + 1) - { 'A', 9, 0, ARC_MOD_AUXREG, 0, 0 }, - -/* end of list place holder. */ - { 0, 0, 0, 0, 0, 0 } -}; - -/* Given a format letter, yields the index into `arc_operands'. - eg: arc_operand_map['a'] = REGA. */ -unsigned char arc_operand_map[256]; - -/* ARC instructions. - - Longer versions of insns must appear before shorter ones (if gas sees - "lsr r2,r3,1" when it's parsing "lsr %a,%b" it will think the ",1" is - junk). This isn't necessary for `ld' because of the trailing ']'. - - Instructions that are really macros based on other insns must appear - before the real insn so they're chosen when disassembling. Eg: The `mov' - insn is really the `and' insn. */ - -struct arc_opcode arc_opcodes[] = -{ - /* Base case instruction set (core versions 5-8) */ - - /* "mov" is really an "and". */ - { "mov%.q%.f %a,%b%F%S%L%U", I(-1), I(12), ARC_MACH_5, 0, 0 }, - /* "asl" is really an "add". */ - { "asl%.q%.f %a,%b%F%S%L%U", I(-1), I(8), ARC_MACH_5, 0, 0 }, - /* "lsl" is really an "add". */ - { "lsl%.q%.f %a,%b%F%S%L%U", I(-1), I(8), ARC_MACH_5, 0, 0 }, - /* "nop" is really an "xor". */ - { "nop", 0x7fffffff, 0x7fffffff, ARC_MACH_5, 0, 0 }, - /* "rlc" is really an "adc". */ - { "rlc%.q%.f %a,%b%F%S%L%U", I(-1), I(9), ARC_MACH_5, 0, 0 }, - { "adc%.q%.f %a,%b,%c%F%S%L", I(-1), I(9), ARC_MACH_5, 0, 0 }, - { "add%.q%.f %a,%b,%c%F%S%L", I(-1), I(8), ARC_MACH_5, 0, 0 }, - { "and%.q%.f %a,%b,%c%F%S%L", I(-1), I(12), ARC_MACH_5, 0, 0 }, - { "asr%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(1), ARC_MACH_5, 0, 0 }, - { "bic%.q%.f %a,%b,%c%F%S%L", I(-1), I(14), ARC_MACH_5, 0, 0 }, - { "b%q%.n %B", I(-1), I(4), ARC_MACH_5 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - { "bl%q%.n %B", I(-1), I(5), ARC_MACH_5 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - { "extb%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(7), ARC_MACH_5, 0, 0 }, - { "extw%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(8), ARC_MACH_5, 0, 0 }, - { "flag%.q %b%G%S%L", I(-1)|A(-1)|C(-1), I(3)|A(ARC_REG_SHIMM_UPDATE)|C(0), ARC_MACH_5, 0, 0 }, - { "brk", 0x1ffffe00, 0x1ffffe00, ARC_MACH_7, 0, 0 }, - { "sleep", 0x1ffffe01, 0x1ffffe01, ARC_MACH_7, 0, 0 }, - { "swi", 0x1ffffe02, 0x1ffffe02, ARC_MACH_8, 0, 0 }, - /* %Q: force cond_p=1 -> no shimm values. This insn allows an - optional flags spec. */ - { "j%q%Q%.n%.f %b%F%J,%j", I(-1)|A(-1)|C(-1)|R(-1,7,1), I(7)|A(0)|C(0)|R(0,7,1), ARC_MACH_5 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - { "j%q%Q%.n%.f %b%F%J", I(-1)|A(-1)|C(-1)|R(-1,7,1), I(7)|A(0)|C(0)|R(0,7,1), ARC_MACH_5 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - /* This insn allows an optional flags spec. */ - { "jl%q%Q%.n%.f %b%F%J,%j", I(-1)|A(-1)|C(-1)|R(-1,7,1)|R(-1,9,1), I(7)|A(0)|C(0)|R(0,7,1)|R(1,9,1), ARC_MACH_6 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - { "jl%q%Q%.n%.f %b%F%J", I(-1)|A(-1)|C(-1)|R(-1,7,1)|R(-1,9,1), I(7)|A(0)|C(0)|R(0,7,1)|R(1,9,1), ARC_MACH_6 | ARC_OPCODE_COND_BRANCH, 0, 0 }, - /* Put opcode 1 ld insns first so shimm gets prefered over limm. - "[%b]" is before "[%b,%o]" so 0 offsets don't get printed. */ - { "ld%Z%.X%.W%.E %a,[%s]%S%L%1", I(-1)|R(-1,13,1)|R(-1,0,511), I(1)|R(0,13,1)|R(0,0,511), ARC_MACH_5, 0, 0 }, - { "ld%z%.x%.w%.e %a,[%s]%S%L%1", I(-1)|R(-1,4,1)|R(-1,6,7), I(0)|R(0,4,1)|R(0,6,7), ARC_MACH_5, 0, 0 }, - { "ld%z%.x%.w%.e %a,[%s,%O]%S%L%1", I(-1)|R(-1,4,1)|R(-1,6,7), I(0)|R(0,4,1)|R(0,6,7), ARC_MACH_5, 0, 0 }, - { "ld%Z%.X%.W%.E %a,[%s,%O]%S%L%3", I(-1)|R(-1,13,1), I(1)|R(0,13,1), ARC_MACH_5, 0, 0 }, - { "lp%q%.n %B", I(-1), I(6), ARC_MACH_5, 0, 0 }, - { "lr %a,[%Ab]%S%L", I(-1)|C(-1), I(1)|C(0x10), ARC_MACH_5, 0, 0 }, - { "lsr%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(2), ARC_MACH_5, 0, 0 }, - { "or%.q%.f %a,%b,%c%F%S%L", I(-1), I(13), ARC_MACH_5, 0, 0 }, - { "ror%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(3), ARC_MACH_5, 0, 0 }, - { "rrc%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(4), ARC_MACH_5, 0, 0 }, - { "sbc%.q%.f %a,%b,%c%F%S%L", I(-1), I(11), ARC_MACH_5, 0, 0 }, - { "sexb%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(5), ARC_MACH_5, 0, 0 }, - { "sexw%.q%.f %a,%b%F%S%L", I(-1)|C(-1), I(3)|C(6), ARC_MACH_5, 0, 0 }, - { "sr %c,[%Ab]%S%L", I(-1)|A(-1), I(2)|A(0x10), ARC_MACH_5, 0, 0 }, - /* "[%b]" is before "[%b,%o]" so 0 offsets don't get printed. */ - { "st%y%.v%.D %c,[%s]%L%S%0", I(-1)|R(-1,25,1)|R(-1,21,1), I(2)|R(0,25,1)|R(0,21,1), ARC_MACH_5, 0, 0 }, - { "st%y%.v%.D %c,[%s,%o]%S%L%2", I(-1)|R(-1,25,1)|R(-1,21,1), I(2)|R(0,25,1)|R(0,21,1), ARC_MACH_5, 0, 0 }, - { "sub%.q%.f %a,%b,%c%F%S%L", I(-1), I(10), ARC_MACH_5, 0, 0 }, - { "xor%.q%.f %a,%b,%c%F%S%L", I(-1), I(15), ARC_MACH_5, 0, 0 } -}; - -const int arc_opcodes_count = sizeof (arc_opcodes) / sizeof (arc_opcodes[0]); - -const struct arc_operand_value arc_reg_names[] = -{ - /* Core register set r0-r63. */ - - /* r0-r28 - general purpose registers. */ - { "r0", 0, REG, 0 }, { "r1", 1, REG, 0 }, { "r2", 2, REG, 0 }, - { "r3", 3, REG, 0 }, { "r4", 4, REG, 0 }, { "r5", 5, REG, 0 }, - { "r6", 6, REG, 0 }, { "r7", 7, REG, 0 }, { "r8", 8, REG, 0 }, - { "r9", 9, REG, 0 }, { "r10", 10, REG, 0 }, { "r11", 11, REG, 0 }, - { "r12", 12, REG, 0 }, { "r13", 13, REG, 0 }, { "r14", 14, REG, 0 }, - { "r15", 15, REG, 0 }, { "r16", 16, REG, 0 }, { "r17", 17, REG, 0 }, - { "r18", 18, REG, 0 }, { "r19", 19, REG, 0 }, { "r20", 20, REG, 0 }, - { "r21", 21, REG, 0 }, { "r22", 22, REG, 0 }, { "r23", 23, REG, 0 }, - { "r24", 24, REG, 0 }, { "r25", 25, REG, 0 }, { "r26", 26, REG, 0 }, - { "r27", 27, REG, 0 }, { "r28", 28, REG, 0 }, - /* Maskable interrupt link register. */ - { "ilink1", 29, REG, 0 }, - /* Maskable interrupt link register. */ - { "ilink2", 30, REG, 0 }, - /* Branch-link register. */ - { "blink", 31, REG, 0 }, - - /* r32-r59 reserved for extensions. */ - { "r32", 32, REG, 0 }, { "r33", 33, REG, 0 }, { "r34", 34, REG, 0 }, - { "r35", 35, REG, 0 }, { "r36", 36, REG, 0 }, { "r37", 37, REG, 0 }, - { "r38", 38, REG, 0 }, { "r39", 39, REG, 0 }, { "r40", 40, REG, 0 }, - { "r41", 41, REG, 0 }, { "r42", 42, REG, 0 }, { "r43", 43, REG, 0 }, - { "r44", 44, REG, 0 }, { "r45", 45, REG, 0 }, { "r46", 46, REG, 0 }, - { "r47", 47, REG, 0 }, { "r48", 48, REG, 0 }, { "r49", 49, REG, 0 }, - { "r50", 50, REG, 0 }, { "r51", 51, REG, 0 }, { "r52", 52, REG, 0 }, - { "r53", 53, REG, 0 }, { "r54", 54, REG, 0 }, { "r55", 55, REG, 0 }, - { "r56", 56, REG, 0 }, { "r57", 57, REG, 0 }, { "r58", 58, REG, 0 }, - { "r59", 59, REG, 0 }, - - /* Loop count register (24 bits). */ - { "lp_count", 60, REG, 0 }, - /* Short immediate data indicator setting flags. */ - { "r61", 61, REG, ARC_REGISTER_READONLY }, - /* Long immediate data indicator setting flags. */ - { "r62", 62, REG, ARC_REGISTER_READONLY }, - /* Short immediate data indicator not setting flags. */ - { "r63", 63, REG, ARC_REGISTER_READONLY }, - - /* Small-data base register. */ - { "gp", 26, REG, 0 }, - /* Frame pointer. */ - { "fp", 27, REG, 0 }, - /* Stack pointer. */ - { "sp", 28, REG, 0 }, - - { "r29", 29, REG, 0 }, - { "r30", 30, REG, 0 }, - { "r31", 31, REG, 0 }, - { "r60", 60, REG, 0 }, - - /* Auxiliary register set. */ - - /* Auxiliary register address map: - 0xffffffff-0xffffff00 (-1..-256) - customer shimm allocation - 0xfffffeff-0x80000000 - customer limm allocation - 0x7fffffff-0x00000100 - ARC limm allocation - 0x000000ff-0x00000000 - ARC shimm allocation */ - - /* Base case auxiliary registers (shimm address). */ - { "status", 0x00, AUXREG, 0 }, - { "semaphore", 0x01, AUXREG, 0 }, - { "lp_start", 0x02, AUXREG, 0 }, - { "lp_end", 0x03, AUXREG, 0 }, - { "identity", 0x04, AUXREG, ARC_REGISTER_READONLY }, - { "debug", 0x05, AUXREG, 0 }, -}; - -const int arc_reg_names_count = - sizeof (arc_reg_names) / sizeof (arc_reg_names[0]); - -/* The suffix table. - Operands with the same name must be stored together. */ - -const struct arc_operand_value arc_suffixes[] = -{ - /* Entry 0 is special, default values aren't printed by the disassembler. */ - { "", 0, -1, 0 }, - - /* Base case condition codes. */ - { "al", 0, COND, 0 }, - { "ra", 0, COND, 0 }, - { "eq", 1, COND, 0 }, - { "z", 1, COND, 0 }, - { "ne", 2, COND, 0 }, - { "nz", 2, COND, 0 }, - { "pl", 3, COND, 0 }, - { "p", 3, COND, 0 }, - { "mi", 4, COND, 0 }, - { "n", 4, COND, 0 }, - { "cs", 5, COND, 0 }, - { "c", 5, COND, 0 }, - { "lo", 5, COND, 0 }, - { "cc", 6, COND, 0 }, - { "nc", 6, COND, 0 }, - { "hs", 6, COND, 0 }, - { "vs", 7, COND, 0 }, - { "v", 7, COND, 0 }, - { "vc", 8, COND, 0 }, - { "nv", 8, COND, 0 }, - { "gt", 9, COND, 0 }, - { "ge", 10, COND, 0 }, - { "lt", 11, COND, 0 }, - { "le", 12, COND, 0 }, - { "hi", 13, COND, 0 }, - { "ls", 14, COND, 0 }, - { "pnz", 15, COND, 0 }, - - /* Condition codes 16-31 reserved for extensions. */ - - { "f", 1, FLAG, 0 }, - - { "nd", ARC_DELAY_NONE, DELAY, 0 }, - { "d", ARC_DELAY_NORMAL, DELAY, 0 }, - { "jd", ARC_DELAY_JUMP, DELAY, 0 }, - - { "b", 1, SIZE1, 0 }, - { "b", 1, SIZE10, 0 }, - { "b", 1, SIZE22, 0 }, - { "w", 2, SIZE1, 0 }, - { "w", 2, SIZE10, 0 }, - { "w", 2, SIZE22, 0 }, - { "x", 1, SIGN0, 0 }, - { "x", 1, SIGN9, 0 }, - { "a", 1, ADDRESS3, 0 }, - { "a", 1, ADDRESS12, 0 }, - { "a", 1, ADDRESS24, 0 }, - - { "di", 1, CACHEBYPASS5, 0 }, - { "di", 1, CACHEBYPASS14, 0 }, - { "di", 1, CACHEBYPASS26, 0 }, -}; - -const int arc_suffixes_count = - sizeof (arc_suffixes) / sizeof (arc_suffixes[0]); - -/* Indexed by first letter of opcode. Points to chain of opcodes with same - first letter. */ -static struct arc_opcode *opcode_map[26 + 1]; - -/* Indexed by insn code. Points to chain of opcodes with same insn code. */ -static struct arc_opcode *icode_map[32]; - -/* Configuration flags. */ - -/* Various ARC_HAVE_XXX bits. */ -static int cpu_type; - -/* Translate a bfd_mach_arc_xxx value to a ARC_MACH_XXX value. */ - -int -arc_get_opcode_mach (bfd_mach, big_p) - int bfd_mach, big_p; -{ - static int mach_type_map[] = - { - ARC_MACH_5, - ARC_MACH_6, - ARC_MACH_7, - ARC_MACH_8 - }; - return mach_type_map[bfd_mach] | (big_p ? ARC_MACH_BIG : 0); -} - -/* Initialize any tables that need it. - Must be called once at start up (or when first needed). - - FLAGS is a set of bits that say what version of the cpu we have, - and in particular at least (one of) ARC_MACH_XXX. */ - -void -arc_opcode_init_tables (flags) - int flags; -{ - static int init_p = 0; - - cpu_type = flags; - - /* We may be intentionally called more than once (for example gdb will call - us each time the user switches cpu). These tables only need to be init'd - once though. */ - if (!init_p) - { - register int i,n; - - memset (arc_operand_map, 0, sizeof (arc_operand_map)); - n = sizeof (arc_operands) / sizeof (arc_operands[0]); - for (i = 0; i < n; ++i) - arc_operand_map[arc_operands[i].fmt] = i; - - memset (opcode_map, 0, sizeof (opcode_map)); - memset (icode_map, 0, sizeof (icode_map)); - /* Scan the table backwards so macros appear at the front. */ - for (i = arc_opcodes_count - 1; i >= 0; --i) - { - int opcode_hash = ARC_HASH_OPCODE (arc_opcodes[i].syntax); - int icode_hash = ARC_HASH_ICODE (arc_opcodes[i].value); - - arc_opcodes[i].next_asm = opcode_map[opcode_hash]; - opcode_map[opcode_hash] = &arc_opcodes[i]; - - arc_opcodes[i].next_dis = icode_map[icode_hash]; - icode_map[icode_hash] = &arc_opcodes[i]; - } - - init_p = 1; - } -} - -/* Return non-zero if OPCODE is supported on the specified cpu. - Cpu selection is made when calling `arc_opcode_init_tables'. */ - -int -arc_opcode_supported (opcode) - const struct arc_opcode *opcode; -{ - if (ARC_OPCODE_CPU (opcode->flags) <= cpu_type) - return 1; - return 0; -} - -/* Return the first insn in the chain for assembling INSN. */ - -const struct arc_opcode * -arc_opcode_lookup_asm (insn) - const char *insn; -{ - return opcode_map[ARC_HASH_OPCODE (insn)]; -} - -/* Return the first insn in the chain for disassembling INSN. */ - -const struct arc_opcode * -arc_opcode_lookup_dis (insn) - unsigned int insn; -{ - return icode_map[ARC_HASH_ICODE (insn)]; -} - -/* Nonzero if we've seen an 'f' suffix (in certain insns). */ -static int flag_p; - -/* Nonzero if we've finished processing the 'f' suffix. */ -static int flagshimm_handled_p; - -/* Nonzero if we've seen a 'a' suffix (address writeback). */ -static int addrwb_p; - -/* Nonzero if we've seen a 'q' suffix (condition code). */ -static int cond_p; - -/* Nonzero if we've inserted a nullify condition. */ -static int nullify_p; - -/* The value of the a nullify condition we inserted. */ -static int nullify; - -/* Nonzero if we've inserted jumpflags. */ -static int jumpflags_p; - -/* Nonzero if we've inserted a shimm. */ -static int shimm_p; - -/* The value of the shimm we inserted (each insn only gets one but it can - appear multiple times). */ -static int shimm; - -/* Nonzero if we've inserted a limm (during assembly) or seen a limm - (during disassembly). */ -static int limm_p; - -/* The value of the limm we inserted. Each insn only gets one but it can - appear multiple times. */ -static long limm; - -/* Insertion functions. */ - -/* Called by the assembler before parsing an instruction. */ - -void -arc_opcode_init_insert () -{ - int i; - - for(i = 0; i < OPERANDS; i++) - ls_operand[i] = OP_NONE; - - flag_p = 0; - flagshimm_handled_p = 0; - cond_p = 0; - addrwb_p = 0; - shimm_p = 0; - limm_p = 0; - jumpflags_p = 0; - nullify_p = 0; - nullify = 0; /* the default is important. */ -} - -/* Called by the assembler to see if the insn has a limm operand. - Also called by the disassembler to see if the insn contains a limm. */ - -int -arc_opcode_limm_p (limmp) - long *limmp; -{ - if (limmp) - *limmp = limm; - return limm_p; -} - -/* Insert a value into a register field. - If REG is NULL, then this is actually a constant. - - We must also handle auxiliary registers for lr/sr insns. */ - -static arc_insn -insert_reg (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods; - const struct arc_operand_value *reg; - long value; - const char **errmsg; -{ - static char buf[100]; - enum operand op_type = OP_NONE; - - if (reg == NULL) - { - /* We have a constant that also requires a value stored in a register - field. Handle these by updating the register field and saving the - value for later handling by either %S (shimm) or %L (limm). */ - - /* Try to use a shimm value before a limm one. */ - if (ARC_SHIMM_CONST_P (value) - /* If we've seen a conditional suffix we have to use a limm. */ - && !cond_p - /* If we already have a shimm value that is different than ours - we have to use a limm. */ - && (!shimm_p || shimm == value)) - { - int marker; - - op_type = OP_SHIMM; - /* forget about shimm as dest mlm. */ - - if ('a' != operand->fmt) - { - shimm_p = 1; - shimm = value; - flagshimm_handled_p = 1; - marker = flag_p ? ARC_REG_SHIMM_UPDATE : ARC_REG_SHIMM; - } - else - { - /* don't request flag setting on shimm as dest. */ - marker = ARC_REG_SHIMM; - } - insn |= marker << operand->shift; - /* insn |= value & 511; - done later. */ - } - /* We have to use a limm. If we've already seen one they must match. */ - else if (!limm_p || limm == value) - { - op_type = OP_LIMM; - limm_p = 1; - limm = value; - insn |= ARC_REG_LIMM << operand->shift; - /* The constant is stored later. */ - } - else - { - *errmsg = "unable to fit different valued constants into instruction"; - } - } - else - { - /* We have to handle both normal and auxiliary registers. */ - - if (reg->type == AUXREG) - { - if (!(mods & ARC_MOD_AUXREG)) - *errmsg = "auxiliary register not allowed here"; - else - { - if ((insn & I(-1)) == I(2)) /* check for use validity. */ - { - if (reg->flags & ARC_REGISTER_READONLY) - *errmsg = "attempt to set readonly register"; - } - else - { - if (reg->flags & ARC_REGISTER_WRITEONLY) - *errmsg = "attempt to read writeonly register"; - } - insn |= ARC_REG_SHIMM << operand->shift; - insn |= reg->value << arc_operands[reg->type].shift; - } - } - else - { - /* check for use validity. */ - if ('a' == operand->fmt || ((insn & I(-1)) < I(2))) - { - if (reg->flags & ARC_REGISTER_READONLY) - *errmsg = "attempt to set readonly register"; - } - if ('a' != operand->fmt) - { - if (reg->flags & ARC_REGISTER_WRITEONLY) - *errmsg = "attempt to read writeonly register"; - } - /* We should never get an invalid register number here. */ - if ((unsigned int) reg->value > 60) - { - sprintf (buf, "invalid register number `%d'", reg->value); - *errmsg = buf; - } - insn |= reg->value << operand->shift; - op_type = OP_REG; - } - } - - switch (operand->fmt) - { - case 'a': - ls_operand[LS_DEST] = op_type; - break; - case 's': - ls_operand[LS_BASE] = op_type; - break; - case 'c': - if ((insn & I(-1)) == I(2)) - ls_operand[LS_VALUE] = op_type; - else - ls_operand[LS_OFFSET] = op_type; - break; - case 'o': case 'O': - ls_operand[LS_OFFSET] = op_type; - break; - } - - return insn; -} - -/* Called when we see an 'f' flag. */ - -static arc_insn -insert_flag (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - /* We can't store anything in the insn until we've parsed the registers. - Just record the fact that we've got this flag. `insert_reg' will use it - to store the correct value (ARC_REG_SHIMM_UPDATE or bit 0x100). */ - flag_p = 1; - return insn; -} - -/* Called when we see an nullify condition. */ - -static arc_insn -insert_nullify (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value; - const char **errmsg ATTRIBUTE_UNUSED; -{ - nullify_p = 1; - insn |= (value & ((1 << operand->bits) - 1)) << operand->shift; - nullify = value; - return insn; -} - -/* Called after completely building an insn to ensure the 'f' flag gets set - properly. This is needed because we don't know how to set this flag until - we've parsed the registers. */ - -static arc_insn -insert_flagfinish (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - if (flag_p && !flagshimm_handled_p) - { - if (shimm_p) - abort (); - flagshimm_handled_p = 1; - insn |= (1 << operand->shift); - } - return insn; -} - -/* Called when we see a conditional flag (eg: .eq). */ - -static arc_insn -insert_cond (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value; - const char **errmsg ATTRIBUTE_UNUSED; -{ - cond_p = 1; - insn |= (value & ((1 << operand->bits) - 1)) << operand->shift; - return insn; -} - -/* Used in the "j" instruction to prevent constants from being interpreted as - shimm values (which the jump insn doesn't accept). This can also be used - to force the use of limm values in other situations (eg: ld r0,[foo] uses - this). - ??? The mechanism is sound. Access to it is a bit klunky right now. */ - -static arc_insn -insert_forcelimm (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - cond_p = 1; - return insn; -} - -static arc_insn -insert_addr_wb (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - addrwb_p = 1 << operand->shift; - return insn; -} - -static arc_insn -insert_base (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods; - const struct arc_operand_value *reg; - long value; - const char **errmsg; -{ - if (reg != NULL) - { - arc_insn myinsn; - myinsn = insert_reg (0, operand,mods, reg, value, errmsg) >> operand->shift; - insn |= B(myinsn); - ls_operand[LS_BASE] = OP_REG; - } - else if (ARC_SHIMM_CONST_P (value) && !cond_p) - { - if (shimm_p && value != shimm) - { - /* convert the previous shimm operand to a limm. */ - limm_p = 1; - limm = shimm; - insn &= ~C(-1); /* we know where the value is in insn. */ - insn |= C(ARC_REG_LIMM); - ls_operand[LS_VALUE] = OP_LIMM; - } - insn |= ARC_REG_SHIMM << operand->shift; - shimm_p = 1; - shimm = value; - ls_operand[LS_BASE] = OP_SHIMM; - } - else - { - if (limm_p && value != limm) - { - *errmsg = "too many long constants"; - return insn; - } - limm_p = 1; - limm = value; - insn |= B(ARC_REG_LIMM); - ls_operand[LS_BASE] = OP_LIMM; - } - - return insn; -} - -/* Used in ld/st insns to handle the offset field. We don't try to - match operand syntax here. we catch bad combinations later. */ - -static arc_insn -insert_offset (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods; - const struct arc_operand_value *reg; - long value; - const char **errmsg; -{ - long minval, maxval; - - if (reg != NULL) - { - arc_insn myinsn; - myinsn = insert_reg (0,operand,mods,reg,value,errmsg) >> operand->shift; - ls_operand[LS_OFFSET] = OP_REG; - if (operand->flags & ARC_OPERAND_LOAD) /* not if store, catch it later. */ - if ((insn & I(-1)) != I(1)) /* not if opcode == 1, catch it later. */ - insn |= C(myinsn); - } - else - { - /* This is *way* more general than necessary, but maybe some day it'll - be useful. */ - if (operand->flags & ARC_OPERAND_SIGNED) - { - minval = -(1 << (operand->bits - 1)); - maxval = (1 << (operand->bits - 1)) - 1; - } - else - { - minval = 0; - maxval = (1 << operand->bits) - 1; - } - if ((cond_p && !limm_p) || (value < minval || value > maxval)) - { - if (limm_p && value != limm) - { - *errmsg = "too many long constants"; - } - else - { - limm_p = 1; - limm = value; - if (operand->flags & ARC_OPERAND_STORE) - insn |= B(ARC_REG_LIMM); - if (operand->flags & ARC_OPERAND_LOAD) - insn |= C(ARC_REG_LIMM); - ls_operand[LS_OFFSET] = OP_LIMM; - } - } - else - { - if ((value < minval || value > maxval)) - *errmsg = "need too many limms"; - else if (shimm_p && value != shimm) - { - /* check for bad operand combinations before we lose info about them. */ - if ((insn & I(-1)) == I(1)) - { - *errmsg = "to many shimms in load"; - goto out; - } - if (limm_p && operand->flags & ARC_OPERAND_LOAD) - { - *errmsg = "too many long constants"; - goto out; - } - /* convert what we thought was a shimm to a limm. */ - limm_p = 1; - limm = shimm; - if (ls_operand[LS_VALUE] == OP_SHIMM && operand->flags & ARC_OPERAND_STORE) - { - insn &= ~C(-1); - insn |= C(ARC_REG_LIMM); - ls_operand[LS_VALUE] = OP_LIMM; - } - if (ls_operand[LS_BASE] == OP_SHIMM && operand->flags & ARC_OPERAND_STORE) - { - insn &= ~B(-1); - insn |= B(ARC_REG_LIMM); - ls_operand[LS_BASE] = OP_LIMM; - } - } - shimm = value; - shimm_p = 1; - ls_operand[LS_OFFSET] = OP_SHIMM; - } - } - out: - return insn; -} - -/* Used in st insns to do final disasemble syntax check. */ - -static long -extract_st_syntax (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid; -{ -#define ST_SYNTAX(V,B,O) \ -((ls_operand[LS_VALUE] == (V) && \ - ls_operand[LS_BASE] == (B) && \ - ls_operand[LS_OFFSET] == (O))) - - if (!((ST_SYNTAX(OP_REG,OP_REG,OP_NONE) && (insn[0] & 511) == 0) - || ST_SYNTAX(OP_REG,OP_LIMM,OP_NONE) - || (ST_SYNTAX(OP_SHIMM,OP_REG,OP_NONE) && (insn[0] & 511) == 0) - || (ST_SYNTAX(OP_SHIMM,OP_SHIMM,OP_NONE) && (insn[0] & 511) == 0) - || ST_SYNTAX(OP_SHIMM,OP_LIMM,OP_NONE) - || ST_SYNTAX(OP_SHIMM,OP_LIMM,OP_SHIMM) - || ST_SYNTAX(OP_SHIMM,OP_SHIMM,OP_SHIMM) - || (ST_SYNTAX(OP_LIMM,OP_REG,OP_NONE) && (insn[0] & 511) == 0) - || ST_SYNTAX(OP_REG,OP_REG,OP_SHIMM) - || ST_SYNTAX(OP_REG,OP_SHIMM,OP_SHIMM) - || ST_SYNTAX(OP_SHIMM,OP_REG,OP_SHIMM) - || ST_SYNTAX(OP_LIMM,OP_SHIMM,OP_SHIMM) - || ST_SYNTAX(OP_LIMM,OP_SHIMM,OP_NONE) - || ST_SYNTAX(OP_LIMM,OP_REG,OP_SHIMM))) - *invalid = 1; - return 0; -} - -int -arc_limm_fixup_adjust(insn) - arc_insn insn; -{ - int retval = 0; - - /* check for st shimm,[limm]. */ - if ((insn & (I(-1) | C(-1) | B(-1))) == - (I(2) | C(ARC_REG_SHIMM) | B(ARC_REG_LIMM))) - { - retval = insn & 0x1ff; - if (retval & 0x100) /* sign extend 9 bit offset. */ - retval |= ~0x1ff; - } - return -retval; /* negate offset for return. */ -} - -/* Used in st insns to do final syntax check. */ - -static arc_insn -insert_st_syntax (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg; -{ - if (ST_SYNTAX(OP_SHIMM,OP_REG,OP_NONE) && shimm != 0) - { - /* change an illegal insn into a legal one, it's easier to - do it here than to try to handle it during operand scan. */ - limm_p = 1; - limm = shimm; - shimm_p = 0; - shimm = 0; - insn = insn & ~(C(-1) | 511); - insn |= ARC_REG_LIMM << ARC_SHIFT_REGC; - ls_operand[LS_VALUE] = OP_LIMM; - } - - if (ST_SYNTAX(OP_REG,OP_SHIMM,OP_NONE) || ST_SYNTAX(OP_LIMM,OP_SHIMM,OP_NONE)) - { - /* try to salvage this syntax. */ - if (shimm & 0x1) /* odd shimms won't work. */ - { - if (limm_p) /* do we have a limm already? */ - { - *errmsg = "impossible store"; - } - limm_p = 1; - limm = shimm; - shimm = 0; - shimm_p = 0; - insn = insn & ~(B(-1) | 511); - insn |= B(ARC_REG_LIMM); - ls_operand[LS_BASE] = OP_LIMM; - } - else - { - shimm >>= 1; - insn = insn & ~511; - insn |= shimm; - ls_operand[LS_OFFSET] = OP_SHIMM; - } - } - if (ST_SYNTAX(OP_SHIMM,OP_LIMM,OP_NONE)) - { - limm += arc_limm_fixup_adjust(insn); - } - if (!(ST_SYNTAX(OP_REG,OP_REG,OP_NONE) - || ST_SYNTAX(OP_REG,OP_LIMM,OP_NONE) - || ST_SYNTAX(OP_REG,OP_REG,OP_SHIMM) - || ST_SYNTAX(OP_REG,OP_SHIMM,OP_SHIMM) - || (ST_SYNTAX(OP_SHIMM,OP_SHIMM,OP_NONE) && (shimm == 0)) - || ST_SYNTAX(OP_SHIMM,OP_LIMM,OP_NONE) - || ST_SYNTAX(OP_SHIMM,OP_REG,OP_NONE) - || ST_SYNTAX(OP_SHIMM,OP_REG,OP_SHIMM) - || ST_SYNTAX(OP_SHIMM,OP_SHIMM,OP_SHIMM) - || ST_SYNTAX(OP_LIMM,OP_SHIMM,OP_SHIMM) - || ST_SYNTAX(OP_LIMM,OP_REG,OP_NONE) - || ST_SYNTAX(OP_LIMM,OP_REG,OP_SHIMM))) - *errmsg = "st operand error"; - if (addrwb_p) - { - if (ls_operand[LS_BASE] != OP_REG) - *errmsg = "address writeback not allowed"; - insn |= addrwb_p; - } - if (ST_SYNTAX(OP_SHIMM,OP_REG,OP_NONE) && shimm) - *errmsg = "store value must be zero"; - return insn; -} - -/* Used in ld insns to do final syntax check. */ - -static arc_insn -insert_ld_syntax (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg; -{ -#define LD_SYNTAX(D,B,O) \ -((ls_operand[LS_DEST] == (D) && \ - ls_operand[LS_BASE] == (B) && \ - ls_operand[LS_OFFSET] == (O))) - - int test = insn & I(-1); - - if (!(test == I(1))) - { - if ((ls_operand[LS_DEST] == OP_SHIMM || ls_operand[LS_BASE] == OP_SHIMM - || ls_operand[LS_OFFSET] == OP_SHIMM)) - *errmsg = "invalid load/shimm insn"; - } - if (!(LD_SYNTAX(OP_REG,OP_REG,OP_NONE) - || LD_SYNTAX(OP_REG,OP_REG,OP_REG) - || LD_SYNTAX(OP_REG,OP_REG,OP_SHIMM) - || (LD_SYNTAX(OP_REG,OP_LIMM,OP_REG) && !(test == I(1))) - || (LD_SYNTAX(OP_REG,OP_REG,OP_LIMM) && !(test == I(1))) - || LD_SYNTAX(OP_REG,OP_SHIMM,OP_SHIMM) - || (LD_SYNTAX(OP_REG,OP_LIMM,OP_NONE) && (test == I(1))))) - *errmsg = "ld operand error"; - if (addrwb_p) - { - if (ls_operand[LS_BASE] != OP_REG) - *errmsg = "address writeback not allowed"; - insn |= addrwb_p; - } - return insn; -} - -/* Used in ld insns to do final syntax check. */ - -static long -extract_ld_syntax (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid; -{ - int test = insn[0] & I(-1); - - if (!(test == I(1))) - { - if ((ls_operand[LS_DEST] == OP_SHIMM || ls_operand[LS_BASE] == OP_SHIMM - || ls_operand[LS_OFFSET] == OP_SHIMM)) - *invalid = 1; - } - if (!((LD_SYNTAX(OP_REG,OP_REG,OP_NONE) && (test == I(1))) - || LD_SYNTAX(OP_REG,OP_REG,OP_REG) - || LD_SYNTAX(OP_REG,OP_REG,OP_SHIMM) - || (LD_SYNTAX(OP_REG,OP_REG,OP_LIMM) && !(test == I(1))) - || (LD_SYNTAX(OP_REG,OP_LIMM,OP_REG) && !(test == I(1))) - || (LD_SYNTAX(OP_REG,OP_SHIMM,OP_NONE) && (shimm == 0)) - || LD_SYNTAX(OP_REG,OP_SHIMM,OP_SHIMM) - || (LD_SYNTAX(OP_REG,OP_LIMM,OP_NONE) && (test == I(1))))) - *invalid = 1; - return 0; -} - -/* Called at the end of processing normal insns (eg: add) to insert a shimm - value (if present) into the insn. */ - -static arc_insn -insert_shimmfinish (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - if (shimm_p) - insn |= (shimm & ((1 << operand->bits) - 1)) << operand->shift; - return insn; -} - -/* Called at the end of processing normal insns (eg: add) to insert a limm - value (if present) into the insn. - - Note that this function is only intended to handle instructions (with 4 byte - immediate operands). It is not intended to handle data. */ - -/* ??? Actually, there's nothing for us to do as we can't call frag_more, the - caller must do that. The extract fns take a pointer to two words. The - insert fns could be converted and then we could do something useful, but - then the reloc handlers would have to know to work on the second word of - a 2 word quantity. That's too much so we don't handle them. */ - -static arc_insn -insert_limmfinish (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ -#if 0 - if (limm_p) - ; /* nothing to do, gas does it. */ -#endif - return insn; -} - -static arc_insn -insert_jumpflags (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value; - const char **errmsg; -{ - if (!flag_p) - { - *errmsg = "jump flags, but no .f seen"; - } - if (!limm_p) - { - *errmsg = "jump flags, but no limm addr"; - } - if (limm & 0xfc000000) - { - *errmsg = "flag bits of jump address limm lost"; - } - if (limm & 0x03000000) - { - *errmsg = "attempt to set HR bits"; - } - if ((value & ((1 << operand->bits) - 1)) != value) - { - *errmsg = "bad jump flags value"; - } - jumpflags_p = 1; - limm = ((limm & ((1 << operand->shift) - 1)) - | ((value & ((1 << operand->bits) - 1)) << operand->shift)); - return insn; -} - -/* Called at the end of unary operand macros to copy the B field to C. */ - -static arc_insn -insert_unopmacro (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg ATTRIBUTE_UNUSED; -{ - insn |= ((insn >> ARC_SHIFT_REGB) & ARC_MASK_REG) << operand->shift; - return insn; -} - -/* Insert a relative address for a branch insn (b, bl, or lp). */ - -static arc_insn -insert_reladdr (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value; - const char **errmsg; -{ - if (value & 3) - *errmsg = "branch address not on 4 byte boundary"; - insn |= ((value >> 2) & ((1 << operand->bits) - 1)) << operand->shift; - return insn; -} - -/* Insert a limm value as a 26 bit address right shifted 2 into the insn. - - Note that this function is only intended to handle instructions (with 4 byte - immediate operands). It is not intended to handle data. */ - -/* ??? Actually, there's little for us to do as we can't call frag_more, the - caller must do that. The extract fns take a pointer to two words. The - insert fns could be converted and then we could do something useful, but - then the reloc handlers would have to know to work on the second word of - a 2 word quantity. That's too much so we don't handle them. - - We do check for correct usage of the nullify suffix, or we - set the default correctly, though. */ - -static arc_insn -insert_absaddr (insn, operand, mods, reg, value, errmsg) - arc_insn insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value *reg ATTRIBUTE_UNUSED; - long value ATTRIBUTE_UNUSED; - const char **errmsg; -{ - if (limm_p) - { - /* if it is a jump and link, .jd must be specified. */ - if (insn & R(-1,9,1)) - { - if (!nullify_p) - { - insn |= 0x02 << 5; /* default nullify to .jd. */ - } - else - { - if (nullify != 0x02) - { - *errmsg = "must specify .jd or no nullify suffix"; - } - } - } - } - return insn; -} - -/* Extraction functions. - - The suffix extraction functions' return value is redundant since it can be - obtained from (*OPVAL)->value. However, the boolean suffixes don't have - a suffix table entry for the "false" case, so values of zero must be - obtained from the return value (*OPVAL == NULL). */ - -static const struct arc_operand_value *lookup_register (int type, long regno); - -/* Called by the disassembler before printing an instruction. */ - -void -arc_opcode_init_extract () -{ - arc_opcode_init_insert(); -} - -/* As we're extracting registers, keep an eye out for the 'f' indicator - (ARC_REG_SHIMM_UPDATE). If we find a register (not a constant marker, - like ARC_REG_SHIMM), set OPVAL so our caller will know this is a register. - - We must also handle auxiliary registers for lr/sr insns. They are just - constants with special names. */ - -static long -extract_reg (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods; - const struct arc_operand_value **opval; - int *invalid ATTRIBUTE_UNUSED; -{ - int regno; - long value; - enum operand op_type; - - /* Get the register number. */ - regno = (*insn >> operand->shift) & ((1 << operand->bits) - 1); - - /* Is it a constant marker? */ - if (regno == ARC_REG_SHIMM) - { - op_type = OP_SHIMM; - /* always return zero if dest is a shimm mlm. */ - - if ('a' != operand->fmt) - { - value = *insn & 511; - if ((operand->flags & ARC_OPERAND_SIGNED) - && (value & 256)) - value -= 512; - if (!flagshimm_handled_p) - flag_p = 0; - flagshimm_handled_p = 1; - } - else - { - value = 0; - } - } - else if (regno == ARC_REG_SHIMM_UPDATE) - { - op_type = OP_SHIMM; - - /* always return zero if dest is a shimm mlm. */ - - if ('a' != operand->fmt) - { - value = *insn & 511; - if ((operand->flags & ARC_OPERAND_SIGNED) && (value & 256)) - value -= 512; - } - else - { - value = 0; - } - flag_p = 1; - flagshimm_handled_p = 1; - } - else if (regno == ARC_REG_LIMM) - { - op_type = OP_LIMM; - value = insn[1]; - limm_p = 1; - /* if this is a jump instruction (j,jl), show new pc correctly. */ - if (0x07 == ((*insn & I(-1)) >> 27)) - { - value = (value & 0xffffff); - } - } - /* It's a register, set OPVAL (that's the only way we distinguish registers - from constants here). */ - else - { - const struct arc_operand_value *reg = lookup_register (REG, regno); - op_type = OP_REG; - - if (reg == NULL) - abort (); - if (opval != NULL) - *opval = reg; - value = regno; - } - - /* If this field takes an auxiliary register, see if it's a known one. */ - if ((mods & ARC_MOD_AUXREG) - && ARC_REG_CONSTANT_P (regno)) - { - const struct arc_operand_value *reg = lookup_register (AUXREG, value); - - /* This is really a constant, but tell the caller it has a special - name. */ - if (reg != NULL && opval != NULL) - *opval = reg; - } - switch(operand->fmt) - { - case 'a': - ls_operand[LS_DEST] = op_type; - break; - case 's': - ls_operand[LS_BASE] = op_type; - break; - case 'c': - if ((insn[0]& I(-1)) == I(2)) - ls_operand[LS_VALUE] = op_type; - else - ls_operand[LS_OFFSET] = op_type; - break; - case 'o': case 'O': - ls_operand[LS_OFFSET] = op_type; - break; - } - - return value; -} - -/* Return the value of the "flag update" field for shimm insns. - This value is actually stored in the register field. */ - -static long -extract_flag (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval; - int *invalid ATTRIBUTE_UNUSED; -{ - int f; - const struct arc_operand_value *val; - - if (flagshimm_handled_p) - f = flag_p != 0; - else - f = (*insn & (1 << operand->shift)) != 0; - - /* There is no text for zero values. */ - if (f == 0) - return 0; - flag_p = 1; - val = arc_opcode_lookup_suffix (operand, 1); - if (opval != NULL && val != NULL) - *opval = val; - return val->value; -} - -/* Extract the condition code (if it exists). - If we've seen a shimm value in this insn (meaning that the insn can't have - a condition code field), then we don't store anything in OPVAL and return - zero. */ - -static long -extract_cond (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval; - int *invalid ATTRIBUTE_UNUSED; -{ - long cond; - const struct arc_operand_value *val; - - if (flagshimm_handled_p) - return 0; - - cond = (*insn >> operand->shift) & ((1 << operand->bits) - 1); - val = arc_opcode_lookup_suffix (operand, cond); - - /* Ignore NULL values of `val'. Several condition code values are - reserved for extensions. */ - if (opval != NULL && val != NULL) - *opval = val; - return cond; -} - -/* Extract a branch address. - We return the value as a real address (not right shifted by 2). */ - -static long -extract_reladdr (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid ATTRIBUTE_UNUSED; -{ - long addr; - - addr = (*insn >> operand->shift) & ((1 << operand->bits) - 1); - if ((operand->flags & ARC_OPERAND_SIGNED) - && (addr & (1 << (operand->bits - 1)))) - addr -= 1 << operand->bits; - return addr << 2; -} - -/* extract the flags bits from a j or jl long immediate. */ -static long -extract_jumpflags(insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid; -{ - if (!flag_p || !limm_p) - *invalid = 1; - return ((flag_p && limm_p) - ? (insn[1] >> operand->shift) & ((1 << operand->bits) -1): 0); -} - -/* extract st insn's offset. */ - -static long -extract_st_offset (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid; -{ - int value = 0; - - if (ls_operand[LS_VALUE] != OP_SHIMM || ls_operand[LS_BASE] != OP_LIMM) - { - value = insn[0] & 511; - if ((operand->flags & ARC_OPERAND_SIGNED) && (value & 256)) - value -= 512; - if (value) - ls_operand[LS_OFFSET] = OP_SHIMM; - } - else - { - *invalid = 1; - } - return(value); -} - -/* extract ld insn's offset. */ - -static long -extract_ld_offset (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand; - int mods; - const struct arc_operand_value **opval; - int *invalid; -{ - int test = insn[0] & I(-1); - int value; - - if (test) - { - value = insn[0] & 511; - if ((operand->flags & ARC_OPERAND_SIGNED) && (value & 256)) - value -= 512; - if (value) - ls_operand[LS_OFFSET] = OP_SHIMM; - return(value); - } - /* if it isn't in the insn, it's concealed behind reg 'c'. */ - return extract_reg (insn, &arc_operands[arc_operand_map['c']], - mods, opval, invalid); -} - -/* The only thing this does is set the `invalid' flag if B != C. - This is needed because the "mov" macro appears before it's real insn "and" - and we don't want the disassembler to confuse them. */ - -static long -extract_unopmacro (insn, operand, mods, opval, invalid) - arc_insn *insn; - const struct arc_operand *operand ATTRIBUTE_UNUSED; - int mods ATTRIBUTE_UNUSED; - const struct arc_operand_value **opval ATTRIBUTE_UNUSED; - int *invalid; -{ - /* This misses the case where B == ARC_REG_SHIMM_UPDATE && - C == ARC_REG_SHIMM (or vice versa). No big deal. Those insns will get - printed as "and"s. */ - if (((*insn >> ARC_SHIFT_REGB) & ARC_MASK_REG) - != ((*insn >> ARC_SHIFT_REGC) & ARC_MASK_REG)) - if (invalid != NULL) - *invalid = 1; - return 0; -} - -/* Utility for the extraction functions to return the index into - `arc_suffixes'. */ - -const struct arc_operand_value * -arc_opcode_lookup_suffix (type, value) - const struct arc_operand *type; - int value; -{ - register const struct arc_operand_value *v,*end; - struct arc_ext_operand_value *ext_oper = arc_ext_operands; - - while (ext_oper) - { - if (type == &arc_operands[ext_oper->operand.type] - && value == ext_oper->operand.value) - return (&ext_oper->operand); - ext_oper = ext_oper->next; - } - - /* ??? This is a little slow and can be speeded up. */ - - for (v = arc_suffixes, end = arc_suffixes + arc_suffixes_count; v < end; ++v) - if (type == &arc_operands[v->type] - && value == v->value) - return v; - return 0; -} - -static const struct arc_operand_value * -lookup_register (type, regno) - int type; - long regno; -{ - register const struct arc_operand_value *r,*end; - struct arc_ext_operand_value *ext_oper = arc_ext_operands; - - while (ext_oper) - { - if (ext_oper->operand.type == type && ext_oper->operand.value == regno) - return (&ext_oper->operand); - ext_oper = ext_oper->next; - } - - if (type == REG) - return &arc_reg_names[regno]; - - /* ??? This is a little slow and can be speeded up. */ - - for (r = arc_reg_names, end = arc_reg_names + arc_reg_names_count; - r < end; ++r) - if (type == r->type && regno == r->value) - return r; - return 0; -} - -int -arc_insn_is_j(insn) - arc_insn insn; -{ - return (insn & (I(-1))) == I(0x7); -} - -int -arc_insn_not_jl(insn) - arc_insn insn; -{ - return ((insn & (I(-1)|A(-1)|C(-1)|R(-1,7,1)|R(-1,9,1))) - != (I(0x7) | R(-1,9,1))); -} - -int -arc_operand_type(int opertype) -{ - switch (opertype) - { - case 0: - return(COND); - break; - case 1: - return(REG); - break; - case 2: - return(AUXREG); - break; - } - return -1; -} - -struct arc_operand_value * -get_ext_suffix(s) - char *s; -{ - struct arc_ext_operand_value *suffix = arc_ext_operands; - - while (suffix) - { - if ((COND == suffix->operand.type) - && !strcmp(s,suffix->operand.name)) - return(&suffix->operand); - suffix = suffix->next; - } - return NULL; -} - -int -arc_get_noshortcut_flag() -{ - return ARC_REGISTER_NOSHORT_CUT; -} |