X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-msp430.c;h=41413f0de92dd9c5c3ebc6627f18bf0619329f8a;hb=508559397632e046a1f734f27d2b1971b1d172d1;hp=fefcf575074ab98cfbc1fcccada2c2ac4b931df1;hpb=67c1ffbec916d2c18096f2a285d4f5812f20bd24;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-msp430.c b/gas/config/tc-msp430.c index fefcf57507..41413f0de9 100644 --- a/gas/config/tc-msp430.c +++ b/gas/config/tc-msp430.c @@ -1,13 +1,13 @@ /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430 - Copyright (C) 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 2002-2019 Free Software Foundation, Inc. Contributed by Dmitry Diky This file is part of GAS, the GNU Assembler. GAS 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) + the Free Software Foundation; either version 3, or (at your option) any later version. GAS is distributed in the hope that it will be useful, @@ -17,293 +17,420 @@ You should have received a copy of the GNU General Public License along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + the Free Software Foundation, 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ -#include -#include -#include -#include - -#define PUSH_1X_WORKAROUND #include "as.h" +#include #include "subsegs.h" #include "opcode/msp430.h" #include "safe-ctype.h" - -const char comment_chars[] = ";"; -const char line_comment_chars[] = "#"; -const char line_separator_chars[] = ""; -const char EXP_CHARS[] = "eE"; -const char FLT_CHARS[] = "dD"; - -/* Handle long expressions. */ -extern LITTLENUM_TYPE generic_bignum[]; - -static struct hash_control *msp430_hash; - -static unsigned int msp430_operands - PARAMS ((struct msp430_opcode_s *, char *)); -static int msp430_srcoperand - PARAMS ((struct msp430_operand_s *, char *, int, int *)); -static int msp430_dstoperand - PARAMS ((struct msp430_operand_s *, char *, int)); -static char *parse_exp - PARAMS ((char *, expressionS *)); -static inline char *skip_space - PARAMS ((char *)); -static int check_reg - PARAMS ((char *)); -static void msp430_set_arch - PARAMS ((int)); -static void show_mcu_list - PARAMS ((FILE *)); -static void del_spaces - PARAMS ((char *)); - -#define MAX_OP_LEN 256 - -struct mcu_type_s +#include "dwarf2dbg.h" +#include "elf/msp430.h" +#include "libiberty.h" + +/* We will disable polymorphs by default because it is dangerous. + The potential problem here is the following: assume we got the + following code: + + jump .l1 + nop + jump subroutine ; external symbol + .l1: + nop + ret + + In case of assembly time relaxation we'll get: + 0: jmp .l1 <.text +0x08> (reloc deleted) + 2: nop + 4: br subroutine + .l1: + 8: nop + 10: ret + + If the 'subroutine' is within +-1024 bytes range then linker + will produce: + 0: jmp .text +0x08 + 2: nop + 4: jmp subroutine + .l1: + 6: nop + 8: ret ; 'jmp .text +0x08' will land here. WRONG!!! + + The workaround is the following: + 1. Declare global var enable_polymorphs which set to 1 via option -mp. + 2. Declare global var enable_relax which set to 1 via option -mQ. + + If polymorphs are enabled, and relax isn't, treat all jumps as long jumps, + do not delete any relocs and leave them for linker. + + If relax is enabled, relax at assembly time and kill relocs as necessary. */ + +int msp430_enable_relax; +int msp430_enable_polys; + +/* GCC uses the some condition codes which we'll + implement as new polymorph instructions. + + COND EXPL SHORT JUMP LONG JUMP + =============================================== + eq == jeq jne +4; br lab + ne != jne jeq +4; br lab + + ltn honours no-overflow flag + ltn < jn jn +2; jmp +4; br lab + + lt < jl jge +4; br lab + ltu < jlo lhs +4; br lab + le <= see below + leu <= see below + + gt > see below + gtu > see below + ge >= jge jl +4; br lab + geu >= jhs jlo +4; br lab + =============================================== + + Therefore, new opcodes are (BranchEQ -> beq; and so on...) + beq,bne,blt,bltn,bltu,bge,bgeu + 'u' means unsigned compares + + Also, we add 'jump' instruction: + jump UNCOND -> jmp br lab + + They will have fmt == 4, and insn_opnumb == number of instruction. */ + +struct rcodes_s { - char *name; - int isa; - int mach; + const char * name; + int index; /* Corresponding insn_opnumb. */ + int sop; /* Opcode if jump length is short. */ + long lpos; /* Label position. */ + long lop0; /* Opcode 1 _word_ (16 bits). */ + long lop1; /* Opcode second word. */ + long lop2; /* Opcode third word. */ }; -#define MSP430_ISA_11 11 -#define MSP430_ISA_110 110 -#define MSP430_ISA_12 12 -#define MSP430_ISA_13 13 -#define MSP430_ISA_14 14 -#define MSP430_ISA_15 15 -#define MSP430_ISA_16 16 -#define MSP430_ISA_31 31 -#define MSP430_ISA_32 32 -#define MSP430_ISA_33 33 -#define MSP430_ISA_41 41 -#define MSP430_ISA_42 42 -#define MSP430_ISA_43 43 -#define MSP430_ISA_44 44 - -#define CHECK_RELOC_MSP430 ((imm_op || byte_op)?BFD_RELOC_MSP430_16_BYTE:BFD_RELOC_MSP430_16) -#define CHECK_RELOC_MSP430_PCREL ((imm_op || byte_op)?BFD_RELOC_MSP430_16_PCREL_BYTE:BFD_RELOC_MSP430_16_PCREL) - -static struct mcu_type_s mcu_types[] = +#define MSP430_RLC(n,i,sop,o1) \ + {#n, i, sop, 2, (o1 + 2), 0x4010, 0} + +static struct rcodes_s msp430_rcodes[] = { - {"msp1", MSP430_ISA_11, bfd_mach_msp11}, - {"msp2", MSP430_ISA_14, bfd_mach_msp14}, - {"msp430x110", MSP430_ISA_11, bfd_mach_msp11}, - {"msp430x112", MSP430_ISA_11, bfd_mach_msp11}, - {"msp430x1101",MSP430_ISA_110, bfd_mach_msp110}, - {"msp430x1111",MSP430_ISA_110, bfd_mach_msp110}, - {"msp430x1121",MSP430_ISA_110, bfd_mach_msp110}, - {"msp430x1122",MSP430_ISA_11, bfd_mach_msp110}, - {"msp430x1132",MSP430_ISA_11, bfd_mach_msp110}, - - {"msp430x122", MSP430_ISA_12, bfd_mach_msp12}, - {"msp430x123", MSP430_ISA_12, bfd_mach_msp12}, - {"msp430x1222",MSP430_ISA_12, bfd_mach_msp12}, - {"msp430x1232",MSP430_ISA_12, bfd_mach_msp12}, - - {"msp430x133", MSP430_ISA_13, bfd_mach_msp13}, - {"msp430x135", MSP430_ISA_13, bfd_mach_msp13}, - {"msp430x1331",MSP430_ISA_13, bfd_mach_msp13}, - {"msp430x1351",MSP430_ISA_13, bfd_mach_msp13}, - {"msp430x147", MSP430_ISA_14, bfd_mach_msp14}, - {"msp430x148", MSP430_ISA_14, bfd_mach_msp14}, - {"msp430x149", MSP430_ISA_14, bfd_mach_msp14}, - - {"msp430x155", MSP430_ISA_15, bfd_mach_msp15}, - {"msp430x156", MSP430_ISA_15, bfd_mach_msp15}, - {"msp430x157", MSP430_ISA_15, bfd_mach_msp15}, - {"msp430x167", MSP430_ISA_16, bfd_mach_msp16}, - {"msp430x168", MSP430_ISA_16, bfd_mach_msp16}, - {"msp430x169", MSP430_ISA_16, bfd_mach_msp16}, - - {"msp430x311", MSP430_ISA_31, bfd_mach_msp31}, - {"msp430x312", MSP430_ISA_31, bfd_mach_msp31}, - {"msp430x313", MSP430_ISA_31, bfd_mach_msp31}, - {"msp430x314", MSP430_ISA_31, bfd_mach_msp31}, - {"msp430x315", MSP430_ISA_31, bfd_mach_msp31}, - {"msp430x323", MSP430_ISA_32, bfd_mach_msp32}, - {"msp430x325", MSP430_ISA_32, bfd_mach_msp32}, - {"msp430x336", MSP430_ISA_33, bfd_mach_msp33}, - {"msp430x337", MSP430_ISA_33, bfd_mach_msp33}, - - {"msp430x412", MSP430_ISA_41, bfd_mach_msp41}, - {"msp430x413", MSP430_ISA_41, bfd_mach_msp41}, - - {"msp430xE423", MSP430_ISA_42, bfd_mach_msp42}, - {"msp430xE425", MSP430_ISA_42, bfd_mach_msp42}, - {"msp430xE427", MSP430_ISA_42, bfd_mach_msp42}, - {"msp430xW423", MSP430_ISA_42, bfd_mach_msp42}, - {"msp430xW425", MSP430_ISA_42, bfd_mach_msp42}, - {"msp430xW427", MSP430_ISA_42, bfd_mach_msp42}, - - {"msp430x435", MSP430_ISA_43, bfd_mach_msp43}, - {"msp430x436", MSP430_ISA_43, bfd_mach_msp43}, - {"msp430x437", MSP430_ISA_43, bfd_mach_msp43}, - {"msp430x447", MSP430_ISA_44, bfd_mach_msp44}, - {"msp430x448", MSP430_ISA_44, bfd_mach_msp44}, - {"msp430x449", MSP430_ISA_44, bfd_mach_msp44}, - - {NULL, 0, 0} + MSP430_RLC (beq, 0, 0x2400, 0x2000), + MSP430_RLC (bne, 1, 0x2000, 0x2400), + MSP430_RLC (blt, 2, 0x3800, 0x3400), + MSP430_RLC (bltu, 3, 0x2800, 0x2c00), + MSP430_RLC (bge, 4, 0x3400, 0x3800), + MSP430_RLC (bgeu, 5, 0x2c00, 0x2800), + {"bltn", 6, 0x3000, 3, 0x3000 + 1, 0x3c00 + 2,0x4010}, + {"jump", 7, 0x3c00, 1, 0x4010, 0, 0}, + {0,0,0,0,0,0,0} }; +#undef MSP430_RLC +#define MSP430_RLC(n,i,sop,o1) \ + {#n, i, sop, 2, (o1 + 2), 0x0030, 0} -static struct mcu_type_s default_mcu = - { "msp430x11", MSP430_ISA_11, bfd_mach_msp11 }; - -static struct mcu_type_s *msp430_mcu = &default_mcu; - -const pseudo_typeS md_pseudo_table[] = +static struct rcodes_s msp430x_rcodes[] = { - {"arch", msp430_set_arch, 0}, - {NULL, NULL, 0} + MSP430_RLC (beq, 0, 0x2400, 0x2000), + MSP430_RLC (bne, 1, 0x2000, 0x2400), + MSP430_RLC (blt, 2, 0x3800, 0x3400), + MSP430_RLC (bltu, 3, 0x2800, 0x2c00), + MSP430_RLC (bge, 4, 0x3400, 0x3800), + MSP430_RLC (bgeu, 5, 0x2c00, 0x2800), + {"bltn", 6, 0x3000, 3, 0x0030 + 1, 0x3c00 + 2, 0x3000}, + {"jump", 7, 0x3c00, 1, 0x0030, 0, 0}, + {0,0,0,0,0,0,0} }; +#undef MSP430_RLC -#define OPTION_MMCU 'm' +/* More difficult than above and they have format 5. -const char *md_shortopts = "m:"; + COND EXPL SHORT LONG + ================================================================= + gt > jeq +2; jge label jeq +6; jl +4; br label + gtu > jeq +2; jhs label jeq +6; jlo +4; br label + leu <= jeq label; jlo label jeq +2; jhs +4; br label + le <= jeq label; jl label jeq +2; jge +4; br label + ================================================================= */ -struct option md_longopts[] = +struct hcodes_s { - {"mmcu", required_argument, NULL, OPTION_MMCU}, - {NULL, no_argument, NULL, 0} + const char * name; + int index; /* Corresponding insn_opnumb. */ + int tlab; /* Number of labels in short mode. */ + int op0; /* Opcode for first word of short jump. */ + int op1; /* Opcode for second word of short jump. */ + int lop0; /* Opcodes for long jump mode. */ + int lop1; + int lop2; }; -size_t md_longopts_size = sizeof (md_longopts); +static struct hcodes_s msp430_hcodes[] = +{ + {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x4010 }, + {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x4010 }, + {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x4010 }, + {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x4010 }, + {0,0,0,0,0,0,0,0} +}; -static void -show_mcu_list (stream) - FILE *stream; +static struct hcodes_s msp430x_hcodes[] = { - int i; + {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x0030 }, + {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x0030 }, + {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x0030 }, + {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x0030 }, + {0,0,0,0,0,0,0,0} +}; - fprintf (stream, _("Known MCU names:\n")); +const char comment_chars[] = ";"; +const char line_comment_chars[] = "#"; +const char line_separator_chars[] = "{"; +const char EXP_CHARS[] = "eE"; +const char FLT_CHARS[] = "dD"; - for (i = 0; mcu_types[i].name; i++) - fprintf (stream, _("\t %s\n"), mcu_types[i].name); +/* Handle long expressions. */ +extern LITTLENUM_TYPE generic_bignum[]; - fprintf (stream, "\n"); -} +static struct hash_control *msp430_hash; -void -md_show_usage (stream) - FILE *stream; +/* Relaxations. */ +#define STATE_UNCOND_BRANCH 1 /* jump */ +#define STATE_NOOV_BRANCH 3 /* bltn */ +#define STATE_SIMPLE_BRANCH 2 /* bne, beq, etc... */ +#define STATE_EMUL_BRANCH 4 + +#define CNRL 2 +#define CUBL 4 +#define CNOL 8 +#define CSBL 6 +#define CEBL 4 + +/* Length. */ +#define STATE_BITS10 1 /* Wild guess. short jump. */ +#define STATE_WORD 2 /* 2 bytes pc rel. addr. more. */ +#define STATE_UNDEF 3 /* Cannot handle this yet. convert to word mode. */ + +#define ENCODE_RELAX(what,length) (((what) << 2) + (length)) +#define RELAX_STATE(s) ((s) & 3) +#define RELAX_LEN(s) ((s) >> 2) +#define RELAX_NEXT(a,b) ENCODE_RELAX (a, b + 1) + +relax_typeS md_relax_table[] = { - fprintf (stream, - _("MSP430 options:\n" - " -mmcu=[msp430-name] select microcontroller type\n" - " msp430x110 msp430x112\n" - " msp430x1101 msp430x1111\n" - " msp430x1121 msp430x1122 msp430x1132\n" - " msp430x122 msp430x123\n" - " msp430x1222 msp430x1232\n" - " msp430x133 msp430x135\n" - " msp430x1331 msp430x1351\n" - " msp430x147 msp430x148 msp430x149\n" - " msp430x155 msp430x156 msp430x157\n" - " msp430x167 msp430x168 msp430x169\n" - " msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n" - " msp430x323 msp430x325\n" - " msp430x336 msp430x337\n" - " msp430x412 msp430x413\n" - " msp430xE423 msp430xE425 msp430E427\n" - " msp430xW423 msp430xW425 msp430W427\n" - " msp430x435 msp430x436 msp430x437\n" - " msp430x447 msp430x448 msp430x449\n")); - - show_mcu_list (stream); -} + /* Unused. */ + {1, 1, 0, 0}, + {1, 1, 0, 0}, + {1, 1, 0, 0}, + {1, 1, 0, 0}, + + /* Unconditional jump. */ + {1, 1, 8, 5}, + {1024, -1024, CNRL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ + {0, 0, CUBL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_WORD)}, /* state word */ + {1, 1, CUBL, 0}, /* state undef */ + + /* Simple branches. */ + {0, 0, 8, 9}, + {1024, -1024, CNRL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ + {0, 0, CSBL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_WORD)}, /* state word */ + {1, 1, CSBL, 0}, + + /* blt no overflow branch. */ + {1, 1, 8, 13}, + {1024, -1024, CNRL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ + {0, 0, CNOL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_WORD)}, /* state word */ + {1, 1, CNOL, 0}, + + /* Emulated branches. */ + {1, 1, 8, 17}, + {1020, -1020, CEBL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ + {0, 0, CNOL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_WORD)}, /* state word */ + {1, 1, CNOL, 0} +}; -static char * -extract_word (char *from, char *to, int limit) -{ - char *op_start; - char *op_end; - int size = 0; - /* Drop leading whitespace. */ - from = skip_space (from); - *to = 0; +#define MAX_OP_LEN 4096 - /* Find the op code end. */ - for (op_start = op_end = from; *op_end != 0 && is_part_of_name (*op_end);) - { - to[size++] = *op_end++; - if (size + 1 >= limit) - break; - } +typedef enum msp_isa +{ + MSP_ISA_430, + MSP_ISA_430X, + MSP_ISA_430Xv2 +} msp_isa; - to[size] = 0; - return op_end; -} +static enum msp_isa selected_isa = MSP_ISA_430Xv2; -static void -msp430_set_arch (dummy) - int dummy ATTRIBUTE_UNUSED; +static inline bfd_boolean +target_is_430x (void) { - char *str = (char *) alloca (32); /* 32 for good measure. */ - - input_line_pointer = extract_word (input_line_pointer, str, 32); + return selected_isa >= MSP_ISA_430X; +} - md_parse_option (OPTION_MMCU, str); - bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach); +static inline bfd_boolean +target_is_430xv2 (void) +{ + return selected_isa == MSP_ISA_430Xv2; } -int -md_parse_option (c, arg) - int c; - char *arg; +/* Generate an absolute 16-bit relocation. + For the 430X we generate a relocation without linker range checking + if the value is being used in an extended (ie 20-bit) instruction, + otherwise if have a shifted expression we use a HI reloc. + For the 430 we generate a relocation without assembler range checking + if we are handling an immediate value or a byte-width instruction. */ + +#undef CHECK_RELOC_MSP430 +#define CHECK_RELOC_MSP430(OP) \ + (target_is_430x () \ + ? (extended_op \ + ? BFD_RELOC_16 \ + : ((OP).vshift == 1) \ + ? BFD_RELOC_MSP430_ABS_HI16 \ + : BFD_RELOC_MSP430X_ABS16) \ + : ((imm_op || byte_op) \ + ? BFD_RELOC_MSP430_16_BYTE : BFD_RELOC_MSP430_16)) + +/* Generate a 16-bit pc-relative relocation. + For the 430X we generate a relocation without linker range checking. + For the 430 we generate a relocation without assembler range checking + if we are handling an immediate value or a byte-width instruction. */ +#undef CHECK_RELOC_MSP430_PCREL +#define CHECK_RELOC_MSP430_PCREL \ + (target_is_430x () \ + ? BFD_RELOC_MSP430X_PCR16 \ + : (imm_op || byte_op) \ + ? BFD_RELOC_MSP430_16_PCREL_BYTE : BFD_RELOC_MSP430_16_PCREL) + +/* Profiling capability: + It is a performance hit to use gcc's profiling approach for this tiny target. + Even more -- jtag hardware facility does not perform any profiling functions. + However we've got gdb's built-in simulator where we can do anything. + Therefore my suggestion is: + + We define new section ".profiler" which holds all profiling information. + We define new pseudo operation .profiler which will instruct assembler to + add new profile entry to the object file. Profile should take place at the + present address. + + Pseudo-op format: + + .profiler flags,function_to_profile [, cycle_corrector, extra] + + where 'flags' is a combination of the following chars: + s - function Start + x - function eXit + i - function is in Init section + f - function is in Fini section + l - Library call + c - libC standard call + d - stack value Demand (saved at run-time in simulator) + I - Interrupt service routine + P - Prologue start + p - Prologue end + E - Epilogue start + e - Epilogue end + j - long Jump/ sjlj unwind + a - an Arbitrary code fragment + t - exTra parameter saved (constant value like frame size) + '""' optional: "sil" == sil + + function_to_profile - function's address + cycle_corrector - a value which should be added to the cycle + counter, zero if omitted + extra - some extra parameter, zero if omitted. + + For example: + ------------------------------ + .global fxx + .type fxx,@function + fxx: + .LFrameOffset_fxx=0x08 + .profiler "scdP", fxx ; function entry. + ; we also demand stack value to be displayed + push r11 + push r10 + push r9 + push r8 + .profiler "cdp",fxx,0, .LFrameOffset_fxx ; check stack value at this point + ; (this is a prologue end) + ; note, that spare var filled with the frame size + mov r15,r8 + .... + .profiler cdE,fxx ; check stack + pop r8 + pop r9 + pop r10 + pop r11 + .profiler xcde,fxx,3 ; exit adds 3 to the cycle counter + ret ; cause 'ret' insn takes 3 cycles + ------------------------------- + + This profiling approach does not produce any overhead and + absolutely harmless. + So, even profiled code can be uploaded to the MCU. */ +#define MSP430_PROFILER_FLAG_ENTRY 1 /* s */ +#define MSP430_PROFILER_FLAG_EXIT 2 /* x */ +#define MSP430_PROFILER_FLAG_INITSECT 4 /* i */ +#define MSP430_PROFILER_FLAG_FINISECT 8 /* f */ +#define MSP430_PROFILER_FLAG_LIBCALL 0x10 /* l */ +#define MSP430_PROFILER_FLAG_STDCALL 0x20 /* c */ +#define MSP430_PROFILER_FLAG_STACKDMD 0x40 /* d */ +#define MSP430_PROFILER_FLAG_ISR 0x80 /* I */ +#define MSP430_PROFILER_FLAG_PROLSTART 0x100 /* P */ +#define MSP430_PROFILER_FLAG_PROLEND 0x200 /* p */ +#define MSP430_PROFILER_FLAG_EPISTART 0x400 /* E */ +#define MSP430_PROFILER_FLAG_EPIEND 0x800 /* e */ +#define MSP430_PROFILER_FLAG_JUMP 0x1000 /* j */ +#define MSP430_PROFILER_FLAG_FRAGMENT 0x2000 /* a */ +#define MSP430_PROFILER_FLAG_EXTRA 0x4000 /* t */ +#define MSP430_PROFILER_FLAG_notyet 0x8000 /* ? */ + +static int +pow2value (int y) { - int i; + int n = 0; + unsigned int x; - switch (c) - { - case OPTION_MMCU: - for (i = 0; mcu_types[i].name; ++i) - if (strcmp (mcu_types[i].name, arg) == 0) - break; + x = y; - if (!mcu_types[i].name) - { - show_mcu_list (stderr); - as_fatal (_("unknown MCU: %s\n"), arg); - } + if (!x) + return 1; - if (msp430_mcu == &default_mcu || msp430_mcu->mach == mcu_types[i].mach) - msp430_mcu = &mcu_types[i]; - else - as_fatal (_("redefinition of mcu type %s' to %s'"), - msp430_mcu->name, mcu_types[i].name); - return 1; - } + for (; x; x = x >> 1) + if (x & 1) + n++; - return 0; + return n == 1; } -symbolS * -md_undefined_symbol (name) - char *name ATTRIBUTE_UNUSED; -{ - return 0; -} +/* Parse ordinary expression. */ -static inline char * -skip_space (s) - char *s; +static char * +parse_exp (char * s, expressionS * op) { - while (ISSPACE (*s)) - ++s; - return s; + input_line_pointer = s; + expression (op); + if (op->X_op == O_absent) + as_bad (_("missing operand")); + + /* Our caller is likely to check that the entire expression was parsed. + If we have found a hex constant with an 'h' suffix, ilp will be left + pointing at the 'h', so skip it here. */ + if (input_line_pointer != NULL + && op->X_op == O_constant + && (*input_line_pointer == 'h' || *input_line_pointer == 'H')) + ++ input_line_pointer; + return input_line_pointer; } + /* Delete spaces from s: X ( r 1 2) => X(r12). */ static void -del_spaces (s) - char *s; +del_spaces (char * s) { while (*s) { @@ -320,10 +447,18 @@ del_spaces (s) } } -/* Extract one word from FROM and copy it to TO. Delimeters are ",;\n" */ +static inline char * +skip_space (char * s) +{ + while (ISSPACE (*s)) + ++s; + return s; +} + +/* Extract one word from FROM and copy it to TO. Delimiters are ",;\n" */ static char * -extract_operand (char *from, char *to, int limit) +extract_operand (char * from, char * to, int limit) { int size = 0; @@ -347,999 +482,3891 @@ extract_operand (char *from, char *to, int limit) return from; } -static char * -extract_cmd (char *from, char *to, int limit) +static void +msp430_profiler (int dummy ATTRIBUTE_UNUSED) { - int size = 0; - - while (*from && ! ISSPACE (*from) && *from != '.' && limit > size) + char buffer[1024]; + char f[32]; + char * str = buffer; + char * flags = f; + int p_flags = 0; + char * halt; + int ops = 0; + int left; + char * s; + segT seg; + int subseg; + char * end = 0; + expressionS exp; + expressionS exp1; + + s = input_line_pointer; + end = input_line_pointer; + + while (*end && *end != '\n') + end++; + + while (*s && *s != '\n') { - *(to + size) = *from; - from++; - size++; + if (*s == ',') + ops++; + s++; } - *(to + size) = 0; - - return from; -} - -/* Turn a string in input_line_pointer into a floating point constant - of type TYPE, and store the appropriate bytes in *LITP. The number - of LITTLENUMS emitted is stored in *SIZEP. An error message is - returned, or NULL on OK. */ + left = 3 - ops; -char * -md_atof (type, litP, sizeP) - int type; - char *litP; - int *sizeP; -{ - int prec; - LITTLENUM_TYPE words[4]; - LITTLENUM_TYPE *wordP; - char *t; - - switch (type) + if (ops < 1) { - case 'f': - prec = 2; - break; - case 'd': - prec = 4; - break; - default: - *sizeP = 0; - return _("bad call to md_atof"); + as_bad (_(".profiler pseudo requires at least two operands.")); + input_line_pointer = end; + return; } - t = atof_ieee (input_line_pointer, type, words); - if (t) - input_line_pointer = t; + input_line_pointer = extract_operand (input_line_pointer, flags, 32); - *sizeP = prec * sizeof (LITTLENUM_TYPE); - - /* This loop outputs the LITTLENUMs in REVERSE order. */ - for (wordP = words + prec - 1; prec--;) + while (*flags) { - md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); - litP += sizeof (LITTLENUM_TYPE); + switch (*flags) + { + case '"': + break; + case 'a': + p_flags |= MSP430_PROFILER_FLAG_FRAGMENT; + break; + case 'j': + p_flags |= MSP430_PROFILER_FLAG_JUMP; + break; + case 'P': + p_flags |= MSP430_PROFILER_FLAG_PROLSTART; + break; + case 'p': + p_flags |= MSP430_PROFILER_FLAG_PROLEND; + break; + case 'E': + p_flags |= MSP430_PROFILER_FLAG_EPISTART; + break; + case 'e': + p_flags |= MSP430_PROFILER_FLAG_EPIEND; + break; + case 's': + p_flags |= MSP430_PROFILER_FLAG_ENTRY; + break; + case 'x': + p_flags |= MSP430_PROFILER_FLAG_EXIT; + break; + case 'i': + p_flags |= MSP430_PROFILER_FLAG_INITSECT; + break; + case 'f': + p_flags |= MSP430_PROFILER_FLAG_FINISECT; + break; + case 'l': + p_flags |= MSP430_PROFILER_FLAG_LIBCALL; + break; + case 'c': + p_flags |= MSP430_PROFILER_FLAG_STDCALL; + break; + case 'd': + p_flags |= MSP430_PROFILER_FLAG_STACKDMD; + break; + case 'I': + p_flags |= MSP430_PROFILER_FLAG_ISR; + break; + case 't': + p_flags |= MSP430_PROFILER_FLAG_EXTRA; + break; + default: + as_warn (_("unknown profiling flag - ignored.")); + break; + } + flags++; } - return NULL; -} + if (p_flags + && ( ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_ENTRY + | MSP430_PROFILER_FLAG_EXIT)) + || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_PROLSTART + | MSP430_PROFILER_FLAG_PROLEND + | MSP430_PROFILER_FLAG_EPISTART + | MSP430_PROFILER_FLAG_EPIEND)) + || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_INITSECT + | MSP430_PROFILER_FLAG_FINISECT)))) + { + as_bad (_("ambiguous flags combination - '.profiler' directive ignored.")); + input_line_pointer = end; + return; + } -void -md_convert_frag (abfd, sec, fragP) - bfd *abfd ATTRIBUTE_UNUSED; - asection *sec ATTRIBUTE_UNUSED; - fragS *fragP ATTRIBUTE_UNUSED; -{ - abort (); -} + /* Generate temp symbol which denotes current location. */ + if (now_seg == absolute_section) /* Paranoia ? */ + { + exp1.X_op = O_constant; + exp1.X_add_number = abs_section_offset; + as_warn (_("profiling in absolute section?")); + } + else + { + exp1.X_op = O_symbol; + exp1.X_add_symbol = symbol_temp_new_now (); + exp1.X_add_number = 0; + } -void -md_begin () -{ - struct msp430_opcode_s *opcode; - msp430_hash = hash_new (); + /* Generate a symbol which holds flags value. */ + exp.X_op = O_constant; + exp.X_add_number = p_flags; - for (opcode = msp430_opcodes; opcode->name; opcode++) - hash_insert (msp430_hash, opcode->name, (char *) opcode); + /* Save current section. */ + seg = now_seg; + subseg = now_subseg; - bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach); -} + /* Now go to .profiler section. */ + obj_elf_change_section (".profiler", SHT_PROGBITS, 0, 0, 0, 0, 0, 0); -void -md_assemble (str) - char *str; -{ - struct msp430_opcode_s *opcode; - char cmd[32]; - unsigned int i = 0; + /* Save flags. */ + emit_expr (& exp, 2); - str = skip_space (str); /* Skip leading spaces. */ - str = extract_cmd (str, cmd, sizeof (cmd)); + /* Save label value. */ + emit_expr (& exp1, 2); - while (cmd[i] && i < sizeof (cmd)) + while (ops--) { - char a = TOLOWER (cmd[i]); - cmd[i] = a; - i++; + /* Now get profiling info. */ + halt = extract_operand (input_line_pointer, str, 1024); + /* Process like ".word xxx" directive. */ + (void) parse_exp (str, & exp); + emit_expr (& exp, 2); + input_line_pointer = halt; } - if (!cmd[0]) - { - as_bad (_("can't find opcode ")); - return; - } + /* Fill the rest with zeros. */ + exp.X_op = O_constant; + exp.X_add_number = 0; + while (left--) + emit_expr (& exp, 2); - opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd); + /* Return to current section. */ + subseg_set (seg, subseg); +} - if (opcode == NULL) +static char * +extract_word (char * from, char * to, int limit) +{ + char *op_end; + int size = 0; + + /* Drop leading whitespace. */ + from = skip_space (from); + *to = 0; + + /* Find the op code end. */ + for (op_end = from; *op_end != 0 && is_part_of_name (*op_end);) { - as_bad (_("unknown opcode `%s'"), cmd); - return; + to[size++] = *op_end++; + if (size + 1 >= limit) + break; } - { - char *__t = input_line_pointer; - msp430_operands (opcode, str); - input_line_pointer = __t; - } + to[size] = 0; + return op_end; } -/* Parse instruction operands. - Return binary opcode. */ - -static unsigned int -msp430_operands (opcode, line) - struct msp430_opcode_s *opcode; - char *line; +#define OPTION_MMCU 'm' +#define OPTION_RELAX 'Q' +#define OPTION_POLYMORPHS 'P' +#define OPTION_LARGE 'l' +static bfd_boolean large_model = FALSE; +#define OPTION_NO_INTR_NOPS 'N' +#define OPTION_INTR_NOPS 'n' +static bfd_boolean gen_interrupt_nops = FALSE; +#define OPTION_WARN_INTR_NOPS 'y' +#define OPTION_NO_WARN_INTR_NOPS 'Y' +static bfd_boolean warn_interrupt_nops = TRUE; +#define OPTION_UNKNOWN_INTR_NOPS 'u' +#define OPTION_NO_UNKNOWN_INTR_NOPS 'U' +static bfd_boolean do_unknown_interrupt_nops = TRUE; +#define OPTION_MCPU 'c' +#define OPTION_MOVE_DATA 'd' +static bfd_boolean move_data = FALSE; +#define OPTION_DATA_REGION 'r' +static bfd_boolean upper_data_region_in_use = FALSE; +/* The default is to use the lower region only. */ +static bfd_boolean lower_data_region_only = TRUE; + +enum { - int bin = opcode->bin_opcode; /* opcode mask. */ - int __is; - char l1[MAX_OP_LEN], l2[MAX_OP_LEN]; - char *frag; - int where; - struct msp430_operand_s op1, op2; - int res = 0; - static short ZEROS = 0; - int byte_op, imm_op; + OPTION_SILICON_ERRATA = OPTION_MD_BASE, + OPTION_SILICON_ERRATA_WARN, +}; - /* opcode is the one from opcodes table - line contains something like - [.w] @r2+, 5(R1) - or - .b @r2+, 5(R1). */ +static unsigned int silicon_errata_fix = 0; +static unsigned int silicon_errata_warn = 0; +#define SILICON_ERRATA_CPU4 (1 << 0) +#define SILICON_ERRATA_CPU8 (1 << 1) +#define SILICON_ERRATA_CPU11 (1 << 2) +#define SILICON_ERRATA_CPU12 (1 << 3) +#define SILICON_ERRATA_CPU13 (1 << 4) +#define SILICON_ERRATA_CPU19 (1 << 5) - /* Check if byte or word operation. */ - if (*line == '.' && TOLOWER (*(line + 1)) == 'b') - { - bin |= BYTE_OPERATION; - byte_op = 1; - } - else - byte_op = 0; +static void +msp430_set_arch (int option) +{ + char str[32]; /* 32 for good measure. */ - /* skip .[bwBW]. */ - while (! ISSPACE (*line) && *line) - line++; + input_line_pointer = extract_word (input_line_pointer, str, 32); - if (opcode->insn_opnumb && (!*line || *line == '\n')) - { - as_bad (_("instruction %s requires %d operand(s)"), - opcode->name, opcode->insn_opnumb); - return 0; - } + md_parse_option (option, str); + bfd_set_arch_mach (stdoutput, TARGET_ARCH, + target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); +} - memset (l1, 0, sizeof (l1)); - memset (l2, 0, sizeof (l2)); - memset (&op1, 0, sizeof (op1)); - memset (&op2, 0, sizeof (op2)); +/* This is a copy of the same data structure found in gcc/config/msp430/msp430.c + Keep these two structures in sync. + The data in this structure has been extracted from version 1.194 of the + devices.csv file released by TI in September 2016. */ - imm_op = 0; +struct msp430_mcu_data +{ + const char * name; + unsigned int revision; /* 0=> MSP430, 1=>MSP430X, 2=> MSP430Xv2. */ + unsigned int hwmpy; /* 0=>none, 1=>16-bit, 2=>16-bit w/sign extend, 4=>32-bit, 8=> 32-bit (5xx). */ +} +msp430_mcu_data [] = +{ + { "cc430f5123",2,8 }, + { "cc430f5125",2,8 }, + { "cc430f5133",2,8 }, + { "cc430f5135",2,8 }, + { "cc430f5137",2,8 }, + { "cc430f5143",2,8 }, + { "cc430f5145",2,8 }, + { "cc430f5147",2,8 }, + { "cc430f6125",2,8 }, + { "cc430f6126",2,8 }, + { "cc430f6127",2,8 }, + { "cc430f6135",2,8 }, + { "cc430f6137",2,8 }, + { "cc430f6143",2,8 }, + { "cc430f6145",2,8 }, + { "cc430f6147",2,8 }, + { "msp430afe221",0,2 }, + { "msp430afe222",0,2 }, + { "msp430afe223",0,2 }, + { "msp430afe231",0,2 }, + { "msp430afe232",0,2 }, + { "msp430afe233",0,2 }, + { "msp430afe251",0,2 }, + { "msp430afe252",0,2 }, + { "msp430afe253",0,2 }, + { "msp430bt5190",2,8 }, + { "msp430c091",0,0 }, + { "msp430c092",0,0 }, + { "msp430c111",0,0 }, + { "msp430c1111",0,0 }, + { "msp430c112",0,0 }, + { "msp430c1121",0,0 }, + { "msp430c1331",0,0 }, + { "msp430c1351",0,0 }, + { "msp430c311s",0,0 }, + { "msp430c312",0,0 }, + { "msp430c313",0,0 }, + { "msp430c314",0,0 }, + { "msp430c315",0,0 }, + { "msp430c323",0,0 }, + { "msp430c325",0,0 }, + { "msp430c336",0,1 }, + { "msp430c337",0,1 }, + { "msp430c412",0,0 }, + { "msp430c413",0,0 }, + { "msp430cg4616",1,1 }, + { "msp430cg4617",1,1 }, + { "msp430cg4618",1,1 }, + { "msp430cg4619",1,1 }, + { "msp430e112",0,0 }, + { "msp430e313",0,0 }, + { "msp430e315",0,0 }, + { "msp430e325",0,0 }, + { "msp430e337",0,1 }, + { "msp430f110",0,0 }, + { "msp430f1101",0,0 }, + { "msp430f1101a",0,0 }, + { "msp430f1111",0,0 }, + { "msp430f1111a",0,0 }, + { "msp430f112",0,0 }, + { "msp430f1121",0,0 }, + { "msp430f1121a",0,0 }, + { "msp430f1122",0,0 }, + { "msp430f1132",0,0 }, + { "msp430f122",0,0 }, + { "msp430f1222",0,0 }, + { "msp430f123",0,0 }, + { "msp430f1232",0,0 }, + { "msp430f133",0,0 }, + { "msp430f135",0,0 }, + { "msp430f147",0,1 }, + { "msp430f1471",0,1 }, + { "msp430f148",0,1 }, + { "msp430f1481",0,1 }, + { "msp430f149",0,1 }, + { "msp430f1491",0,1 }, + { "msp430f155",0,0 }, + { "msp430f156",0,0 }, + { "msp430f157",0,0 }, + { "msp430f1610",0,1 }, + { "msp430f1611",0,1 }, + { "msp430f1612",0,1 }, + { "msp430f167",0,1 }, + { "msp430f168",0,1 }, + { "msp430f169",0,1 }, + { "msp430f2001",0,0 }, + { "msp430f2002",0,0 }, + { "msp430f2003",0,0 }, + { "msp430f2011",0,0 }, + { "msp430f2012",0,0 }, + { "msp430f2013",0,0 }, + { "msp430f2101",0,0 }, + { "msp430f2111",0,0 }, + { "msp430f2112",0,0 }, + { "msp430f2121",0,0 }, + { "msp430f2122",0,0 }, + { "msp430f2131",0,0 }, + { "msp430f2132",0,0 }, + { "msp430f2232",0,0 }, + { "msp430f2234",0,0 }, + { "msp430f2252",0,0 }, + { "msp430f2254",0,0 }, + { "msp430f2272",0,0 }, + { "msp430f2274",0,0 }, + { "msp430f233",0,2 }, + { "msp430f2330",0,2 }, + { "msp430f235",0,2 }, + { "msp430f2350",0,2 }, + { "msp430f2370",0,2 }, + { "msp430f2410",0,2 }, + { "msp430f2416",1,2 }, + { "msp430f2417",1,2 }, + { "msp430f2418",1,2 }, + { "msp430f2419",1,2 }, + { "msp430f247",0,2 }, + { "msp430f2471",0,2 }, + { "msp430f248",0,2 }, + { "msp430f2481",0,2 }, + { "msp430f249",0,2 }, + { "msp430f2491",0,2 }, + { "msp430f2616",1,2 }, + { "msp430f2617",1,2 }, + { "msp430f2618",1,2 }, + { "msp430f2619",1,2 }, + { "msp430f412",0,0 }, + { "msp430f413",0,0 }, + { "msp430f4132",0,0 }, + { "msp430f415",0,0 }, + { "msp430f4152",0,0 }, + { "msp430f417",0,0 }, + { "msp430f423",0,1 }, + { "msp430f423a",0,1 }, + { "msp430f425",0,1 }, + { "msp430f4250",0,0 }, + { "msp430f425a",0,1 }, + { "msp430f4260",0,0 }, + { "msp430f427",0,1 }, + { "msp430f4270",0,0 }, + { "msp430f427a",0,1 }, + { "msp430f435",0,0 }, + { "msp430f4351",0,0 }, + { "msp430f436",0,0 }, + { "msp430f4361",0,0 }, + { "msp430f437",0,0 }, + { "msp430f4371",0,0 }, + { "msp430f438",0,0 }, + { "msp430f439",0,0 }, + { "msp430f447",0,1 }, + { "msp430f448",0,1 }, + { "msp430f4481",0,1 }, + { "msp430f449",0,1 }, + { "msp430f4491",0,1 }, + { "msp430f4616",1,1 }, + { "msp430f46161",1,1 }, + { "msp430f4617",1,1 }, + { "msp430f46171",1,1 }, + { "msp430f4618",1,1 }, + { "msp430f46181",1,1 }, + { "msp430f4619",1,1 }, + { "msp430f46191",1,1 }, + { "msp430f47126",1,4 }, + { "msp430f47127",1,4 }, + { "msp430f47163",1,4 }, + { "msp430f47166",1,4 }, + { "msp430f47167",1,4 }, + { "msp430f47173",1,4 }, + { "msp430f47176",1,4 }, + { "msp430f47177",1,4 }, + { "msp430f47183",1,4 }, + { "msp430f47186",1,4 }, + { "msp430f47187",1,4 }, + { "msp430f47193",1,4 }, + { "msp430f47196",1,4 }, + { "msp430f47197",1,4 }, + { "msp430f477",0,0 }, + { "msp430f478",0,0 }, + { "msp430f4783",0,4 }, + { "msp430f4784",0,4 }, + { "msp430f479",0,0 }, + { "msp430f4793",0,4 }, + { "msp430f4794",0,4 }, + { "msp430f5131",2,8 }, + { "msp430f5132",2,8 }, + { "msp430f5151",2,8 }, + { "msp430f5152",2,8 }, + { "msp430f5171",2,8 }, + { "msp430f5172",2,8 }, + { "msp430f5212",2,8 }, + { "msp430f5213",2,8 }, + { "msp430f5214",2,8 }, + { "msp430f5217",2,8 }, + { "msp430f5218",2,8 }, + { "msp430f5219",2,8 }, + { "msp430f5222",2,8 }, + { "msp430f5223",2,8 }, + { "msp430f5224",2,8 }, + { "msp430f5227",2,8 }, + { "msp430f5228",2,8 }, + { "msp430f5229",2,8 }, + { "msp430f5232",2,8 }, + { "msp430f5234",2,8 }, + { "msp430f5237",2,8 }, + { "msp430f5239",2,8 }, + { "msp430f5242",2,8 }, + { "msp430f5244",2,8 }, + { "msp430f5247",2,8 }, + { "msp430f5249",2,8 }, + { "msp430f5252",2,8 }, + { "msp430f5253",2,8 }, + { "msp430f5254",2,8 }, + { "msp430f5255",2,8 }, + { "msp430f5256",2,8 }, + { "msp430f5257",2,8 }, + { "msp430f5258",2,8 }, + { "msp430f5259",2,8 }, + { "msp430f5304",2,8 }, + { "msp430f5308",2,8 }, + { "msp430f5309",2,8 }, + { "msp430f5310",2,8 }, + { "msp430f5324",2,8 }, + { "msp430f5325",2,8 }, + { "msp430f5326",2,8 }, + { "msp430f5327",2,8 }, + { "msp430f5328",2,8 }, + { "msp430f5329",2,8 }, + { "msp430f5333",2,8 }, + { "msp430f5335",2,8 }, + { "msp430f5336",2,8 }, + { "msp430f5338",2,8 }, + { "msp430f5340",2,8 }, + { "msp430f5341",2,8 }, + { "msp430f5342",2,8 }, + { "msp430f5358",2,8 }, + { "msp430f5359",2,8 }, + { "msp430f5418",2,8 }, + { "msp430f5418a",2,8 }, + { "msp430f5419",2,8 }, + { "msp430f5419a",2,8 }, + { "msp430f5435",2,8 }, + { "msp430f5435a",2,8 }, + { "msp430f5436",2,8 }, + { "msp430f5436a",2,8 }, + { "msp430f5437",2,8 }, + { "msp430f5437a",2,8 }, + { "msp430f5438",2,8 }, + { "msp430f5438a",2,8 }, + { "msp430f5500",2,8 }, + { "msp430f5501",2,8 }, + { "msp430f5502",2,8 }, + { "msp430f5503",2,8 }, + { "msp430f5504",2,8 }, + { "msp430f5505",2,8 }, + { "msp430f5506",2,8 }, + { "msp430f5507",2,8 }, + { "msp430f5508",2,8 }, + { "msp430f5509",2,8 }, + { "msp430f5510",2,8 }, + { "msp430f5513",2,8 }, + { "msp430f5514",2,8 }, + { "msp430f5515",2,8 }, + { "msp430f5517",2,8 }, + { "msp430f5519",2,8 }, + { "msp430f5521",2,8 }, + { "msp430f5522",2,8 }, + { "msp430f5524",2,8 }, + { "msp430f5525",2,8 }, + { "msp430f5526",2,8 }, + { "msp430f5527",2,8 }, + { "msp430f5528",2,8 }, + { "msp430f5529",2,8 }, + { "msp430f5630",2,8 }, + { "msp430f5631",2,8 }, + { "msp430f5632",2,8 }, + { "msp430f5633",2,8 }, + { "msp430f5634",2,8 }, + { "msp430f5635",2,8 }, + { "msp430f5636",2,8 }, + { "msp430f5637",2,8 }, + { "msp430f5638",2,8 }, + { "msp430f5658",2,8 }, + { "msp430f5659",2,8 }, + { "msp430f5xx_6xxgeneric",2,8 }, + { "msp430f6433",2,8 }, + { "msp430f6435",2,8 }, + { "msp430f6436",2,8 }, + { "msp430f6438",2,8 }, + { "msp430f6458",2,8 }, + { "msp430f6459",2,8 }, + { "msp430f6630",2,8 }, + { "msp430f6631",2,8 }, + { "msp430f6632",2,8 }, + { "msp430f6633",2,8 }, + { "msp430f6634",2,8 }, + { "msp430f6635",2,8 }, + { "msp430f6636",2,8 }, + { "msp430f6637",2,8 }, + { "msp430f6638",2,8 }, + { "msp430f6658",2,8 }, + { "msp430f6659",2,8 }, + { "msp430f6720",2,8 }, + { "msp430f6720a",2,8 }, + { "msp430f6721",2,8 }, + { "msp430f6721a",2,8 }, + { "msp430f6723",2,8 }, + { "msp430f6723a",2,8 }, + { "msp430f6724",2,8 }, + { "msp430f6724a",2,8 }, + { "msp430f6725",2,8 }, + { "msp430f6725a",2,8 }, + { "msp430f6726",2,8 }, + { "msp430f6726a",2,8 }, + { "msp430f6730",2,8 }, + { "msp430f6730a",2,8 }, + { "msp430f6731",2,8 }, + { "msp430f6731a",2,8 }, + { "msp430f6733",2,8 }, + { "msp430f6733a",2,8 }, + { "msp430f6734",2,8 }, + { "msp430f6734a",2,8 }, + { "msp430f6735",2,8 }, + { "msp430f6735a",2,8 }, + { "msp430f6736",2,8 }, + { "msp430f6736a",2,8 }, + { "msp430f6745",2,8 }, + { "msp430f67451",2,8 }, + { "msp430f67451a",2,8 }, + { "msp430f6745a",2,8 }, + { "msp430f6746",2,8 }, + { "msp430f67461",2,8 }, + { "msp430f67461a",2,8 }, + { "msp430f6746a",2,8 }, + { "msp430f6747",2,8 }, + { "msp430f67471",2,8 }, + { "msp430f67471a",2,8 }, + { "msp430f6747a",2,8 }, + { "msp430f6748",2,8 }, + { "msp430f67481",2,8 }, + { "msp430f67481a",2,8 }, + { "msp430f6748a",2,8 }, + { "msp430f6749",2,8 }, + { "msp430f67491",2,8 }, + { "msp430f67491a",2,8 }, + { "msp430f6749a",2,8 }, + { "msp430f67621",2,8 }, + { "msp430f67621a",2,8 }, + { "msp430f67641",2,8 }, + { "msp430f67641a",2,8 }, + { "msp430f6765",2,8 }, + { "msp430f67651",2,8 }, + { "msp430f67651a",2,8 }, + { "msp430f6765a",2,8 }, + { "msp430f6766",2,8 }, + { "msp430f67661",2,8 }, + { "msp430f67661a",2,8 }, + { "msp430f6766a",2,8 }, + { "msp430f6767",2,8 }, + { "msp430f67671",2,8 }, + { "msp430f67671a",2,8 }, + { "msp430f6767a",2,8 }, + { "msp430f6768",2,8 }, + { "msp430f67681",2,8 }, + { "msp430f67681a",2,8 }, + { "msp430f6768a",2,8 }, + { "msp430f6769",2,8 }, + { "msp430f67691",2,8 }, + { "msp430f67691a",2,8 }, + { "msp430f6769a",2,8 }, + { "msp430f6775",2,8 }, + { "msp430f67751",2,8 }, + { "msp430f67751a",2,8 }, + { "msp430f6775a",2,8 }, + { "msp430f6776",2,8 }, + { "msp430f67761",2,8 }, + { "msp430f67761a",2,8 }, + { "msp430f6776a",2,8 }, + { "msp430f6777",2,8 }, + { "msp430f67771",2,8 }, + { "msp430f67771a",2,8 }, + { "msp430f6777a",2,8 }, + { "msp430f6778",2,8 }, + { "msp430f67781",2,8 }, + { "msp430f67781a",2,8 }, + { "msp430f6778a",2,8 }, + { "msp430f6779",2,8 }, + { "msp430f67791",2,8 }, + { "msp430f67791a",2,8 }, + { "msp430f6779a",2,8 }, + { "msp430fe423",0,0 }, + { "msp430fe4232",0,0 }, + { "msp430fe423a",0,0 }, + { "msp430fe4242",0,0 }, + { "msp430fe425",0,0 }, + { "msp430fe4252",0,0 }, + { "msp430fe425a",0,0 }, + { "msp430fe427",0,0 }, + { "msp430fe4272",0,0 }, + { "msp430fe427a",0,0 }, + { "msp430fg4250",0,0 }, + { "msp430fg4260",0,0 }, + { "msp430fg4270",0,0 }, + { "msp430fg437",0,0 }, + { "msp430fg438",0,0 }, + { "msp430fg439",0,0 }, + { "msp430fg4616",1,1 }, + { "msp430fg4617",1,1 }, + { "msp430fg4618",1,1 }, + { "msp430fg4619",1,1 }, + { "msp430fg477",0,0 }, + { "msp430fg478",0,0 }, + { "msp430fg479",0,0 }, + { "msp430fg6425",2,8 }, + { "msp430fg6426",2,8 }, + { "msp430fg6625",2,8 }, + { "msp430fg6626",2,8 }, + { "msp430fr2032",2,0 }, + { "msp430fr2033",2,0 }, + { "msp430fr2110",2,0 }, + { "msp430fr2111",2,0 }, + { "msp430fr2310",2,0 }, + { "msp430fr2311",2,0 }, + { "msp430fr2433",2,8 }, + { "msp430fr2532",2,8 }, + { "msp430fr2533",2,8 }, + { "msp430fr2632",2,8 }, + { "msp430fr2633",2,8 }, + { "msp430fr2xx_4xxgeneric",2,8 }, + { "msp430fr4131",2,0 }, + { "msp430fr4132",2,0 }, + { "msp430fr4133",2,0 }, + { "msp430fr5720",2,8 }, + { "msp430fr5721",2,8 }, + { "msp430fr5722",2,8 }, + { "msp430fr5723",2,8 }, + { "msp430fr5724",2,8 }, + { "msp430fr5725",2,8 }, + { "msp430fr5726",2,8 }, + { "msp430fr5727",2,8 }, + { "msp430fr5728",2,8 }, + { "msp430fr5729",2,8 }, + { "msp430fr5730",2,8 }, + { "msp430fr5731",2,8 }, + { "msp430fr5732",2,8 }, + { "msp430fr5733",2,8 }, + { "msp430fr5734",2,8 }, + { "msp430fr5735",2,8 }, + { "msp430fr5736",2,8 }, + { "msp430fr5737",2,8 }, + { "msp430fr5738",2,8 }, + { "msp430fr5739",2,8 }, + { "msp430fr57xxgeneric",2,8 }, + { "msp430fr5847",2,8 }, + { "msp430fr58471",2,8 }, + { "msp430fr5848",2,8 }, + { "msp430fr5849",2,8 }, + { "msp430fr5857",2,8 }, + { "msp430fr5858",2,8 }, + { "msp430fr5859",2,8 }, + { "msp430fr5867",2,8 }, + { "msp430fr58671",2,8 }, + { "msp430fr5868",2,8 }, + { "msp430fr5869",2,8 }, + { "msp430fr5870",2,8 }, + { "msp430fr5872",2,8 }, + { "msp430fr58721",2,8 }, + { "msp430fr5887",2,8 }, + { "msp430fr5888",2,8 }, + { "msp430fr5889",2,8 }, + { "msp430fr58891",2,8 }, + { "msp430fr5922",2,8 }, + { "msp430fr59221",2,8 }, + { "msp430fr5947",2,8 }, + { "msp430fr59471",2,8 }, + { "msp430fr5948",2,8 }, + { "msp430fr5949",2,8 }, + { "msp430fr5957",2,8 }, + { "msp430fr5958",2,8 }, + { "msp430fr5959",2,8 }, + { "msp430fr5962",2,8 }, + { "msp430fr5964",2,8 }, + { "msp430fr5967",2,8 }, + { "msp430fr5968",2,8 }, + { "msp430fr5969",2,8 }, + { "msp430fr59691",2,8 }, + { "msp430fr5970",2,8 }, + { "msp430fr5972",2,8 }, + { "msp430fr59721",2,8 }, + { "msp430fr5986",2,8 }, + { "msp430fr5987",2,8 }, + { "msp430fr5988",2,8 }, + { "msp430fr5989",2,8 }, + { "msp430fr59891",2,8 }, + { "msp430fr5992",2,8 }, + { "msp430fr5994",2,8 }, + { "msp430fr59941",2,8 }, + { "msp430fr5xx_6xxgeneric",2,8 }, + { "msp430fr6820",2,8 }, + { "msp430fr6822",2,8 }, + { "msp430fr68221",2,8 }, + { "msp430fr6870",2,8 }, + { "msp430fr6872",2,8 }, + { "msp430fr68721",2,8 }, + { "msp430fr6877",2,8 }, + { "msp430fr6879",2,8 }, + { "msp430fr68791",2,8 }, + { "msp430fr6887",2,8 }, + { "msp430fr6888",2,8 }, + { "msp430fr6889",2,8 }, + { "msp430fr68891",2,8 }, + { "msp430fr6920",2,8 }, + { "msp430fr6922",2,8 }, + { "msp430fr69221",2,8 }, + { "msp430fr6927",2,8 }, + { "msp430fr69271",2,8 }, + { "msp430fr6928",2,8 }, + { "msp430fr6970",2,8 }, + { "msp430fr6972",2,8 }, + { "msp430fr69721",2,8 }, + { "msp430fr6977",2,8 }, + { "msp430fr6979",2,8 }, + { "msp430fr69791",2,8 }, + { "msp430fr6987",2,8 }, + { "msp430fr6988",2,8 }, + { "msp430fr6989",2,8 }, + { "msp430fr69891",2,8 }, + { "msp430fw423",0,0 }, + { "msp430fw425",0,0 }, + { "msp430fw427",0,0 }, + { "msp430fw428",0,0 }, + { "msp430fw429",0,0 }, + { "msp430g2001",0,0 }, + { "msp430g2101",0,0 }, + { "msp430g2102",0,0 }, + { "msp430g2111",0,0 }, + { "msp430g2112",0,0 }, + { "msp430g2113",0,0 }, + { "msp430g2121",0,0 }, + { "msp430g2131",0,0 }, + { "msp430g2132",0,0 }, + { "msp430g2152",0,0 }, + { "msp430g2153",0,0 }, + { "msp430g2201",0,0 }, + { "msp430g2202",0,0 }, + { "msp430g2203",0,0 }, + { "msp430g2210",0,0 }, + { "msp430g2211",0,0 }, + { "msp430g2212",0,0 }, + { "msp430g2213",0,0 }, + { "msp430g2221",0,0 }, + { "msp430g2230",0,0 }, + { "msp430g2231",0,0 }, + { "msp430g2232",0,0 }, + { "msp430g2233",0,0 }, + { "msp430g2252",0,0 }, + { "msp430g2253",0,0 }, + { "msp430g2302",0,0 }, + { "msp430g2303",0,0 }, + { "msp430g2312",0,0 }, + { "msp430g2313",0,0 }, + { "msp430g2332",0,0 }, + { "msp430g2333",0,0 }, + { "msp430g2352",0,0 }, + { "msp430g2353",0,0 }, + { "msp430g2402",0,0 }, + { "msp430g2403",0,0 }, + { "msp430g2412",0,0 }, + { "msp430g2413",0,0 }, + { "msp430g2432",0,0 }, + { "msp430g2433",0,0 }, + { "msp430g2444",0,0 }, + { "msp430g2452",0,0 }, + { "msp430g2453",0,0 }, + { "msp430g2513",0,0 }, + { "msp430g2533",0,0 }, + { "msp430g2544",0,0 }, + { "msp430g2553",0,0 }, + { "msp430g2744",0,0 }, + { "msp430g2755",0,0 }, + { "msp430g2855",0,0 }, + { "msp430g2955",0,0 }, + { "msp430i2020",0,2 }, + { "msp430i2021",0,2 }, + { "msp430i2030",0,2 }, + { "msp430i2031",0,2 }, + { "msp430i2040",0,2 }, + { "msp430i2041",0,2 }, + { "msp430i2xxgeneric",0,2 }, + { "msp430l092",0,0 }, + { "msp430p112",0,0 }, + { "msp430p313",0,0 }, + { "msp430p315",0,0 }, + { "msp430p315s",0,0 }, + { "msp430p325",0,0 }, + { "msp430p337",0,1 }, + { "msp430sl5438a",2,8 }, + { "msp430tch5e",0,0 }, + { "msp430xgeneric",2,8 }, + { "rf430f5144",2,8 }, + { "rf430f5155",2,8 }, + { "rf430f5175",2,8 }, + { "rf430frl152h",0,0 }, + { "rf430frl152h_rom",0,0 }, + { "rf430frl153h",0,0 }, + { "rf430frl153h_rom",0,0 }, + { "rf430frl154h",0,0 }, + { "rf430frl154h_rom",0,0 } +}; - switch (opcode->fmt) +int +md_parse_option (int c, const char * arg) +{ + switch (c) { - case 0: /* Emulated. */ - switch (opcode->insn_opnumb) + case OPTION_SILICON_ERRATA: + case OPTION_SILICON_ERRATA_WARN: + { + signed int i; + const struct { - case 0: - /* Set/clear bits instructions. */ - __is = 2; - frag = frag_more (__is); - bfd_putl16 ((bfd_vma) bin, frag); - break; - case 1: - /* Something which works with destination operand. */ - line = extract_operand (line, l1, sizeof (l1)); - res = msp430_dstoperand (&op1, l1, opcode->bin_opcode); - if (res) - break; + const char * name; + unsigned int length; + unsigned int bitfield; + } erratas[] = + { + { STRING_COMMA_LEN ("cpu4"), SILICON_ERRATA_CPU4 }, + { STRING_COMMA_LEN ("cpu8"), SILICON_ERRATA_CPU8 }, + { STRING_COMMA_LEN ("cpu11"), SILICON_ERRATA_CPU11 }, + { STRING_COMMA_LEN ("cpu12"), SILICON_ERRATA_CPU12 }, + { STRING_COMMA_LEN ("cpu13"), SILICON_ERRATA_CPU13 }, + { STRING_COMMA_LEN ("cpu19"), SILICON_ERRATA_CPU19 }, + }; + + do + { + for (i = ARRAY_SIZE (erratas); i--;) + if (strncasecmp (arg, erratas[i].name, erratas[i].length) == 0) + { + if (c == OPTION_SILICON_ERRATA) + silicon_errata_fix |= erratas[i].bitfield; + else + silicon_errata_warn |= erratas[i].bitfield; + arg += erratas[i].length; + break; + } + if (i < 0) + { + as_warn (_("Unrecognised CPU errata name starting here: %s"), arg); + break; + } + if (*arg == 0) + break; + if (*arg != ',') + as_warn (_("Expecting comma after CPU errata name, not: %s"), arg); + else + arg ++; + } + while (*arg != 0); + } + return 1; + + case OPTION_MMCU: + if (arg == NULL) + as_fatal (_("MCU option requires a name\n")); + + if (strcasecmp ("msp430", arg) == 0) + selected_isa = MSP_ISA_430; + else if (strcasecmp ("msp430xv2", arg) == 0) + selected_isa = MSP_ISA_430Xv2; + else if (strcasecmp ("msp430x", arg) == 0) + selected_isa = MSP_ISA_430X; + else + { + int i; + + for (i = ARRAY_SIZE (msp430_mcu_data); i--;) + if (strcasecmp (msp430_mcu_data[i].name, arg) == 0) + { + switch (msp430_mcu_data[i].revision) + { + case 0: selected_isa = MSP_ISA_430; break; + case 1: selected_isa = MSP_ISA_430X; break; + case 2: selected_isa = MSP_ISA_430Xv2; break; + } + break; + } + } + /* It is not an error if we do not match the MCU name. */ + return 1; + + case OPTION_MCPU: + if (strcmp (arg, "430") == 0 + || strcasecmp (arg, "msp430") == 0) + selected_isa = MSP_ISA_430; + else if (strcasecmp (arg, "430x") == 0 + || strcasecmp (arg, "msp430x") == 0) + selected_isa = MSP_ISA_430X; + else if (strcasecmp (arg, "430xv2") == 0 + || strcasecmp (arg, "msp430xv2") == 0) + selected_isa = MSP_ISA_430Xv2; + else + as_fatal (_("unrecognised argument to -mcpu option '%s'"), arg); + return 1; + + case OPTION_RELAX: + msp430_enable_relax = 1; + return 1; + + case OPTION_POLYMORPHS: + msp430_enable_polys = 1; + return 1; + + case OPTION_LARGE: + large_model = TRUE; + return 1; + + case OPTION_NO_INTR_NOPS: + gen_interrupt_nops = FALSE; + return 1; + case OPTION_INTR_NOPS: + gen_interrupt_nops = TRUE; + return 1; + + case OPTION_WARN_INTR_NOPS: + warn_interrupt_nops = TRUE; + return 1; + case OPTION_NO_WARN_INTR_NOPS: + warn_interrupt_nops = FALSE; + return 1; + + case OPTION_UNKNOWN_INTR_NOPS: + do_unknown_interrupt_nops = TRUE; + return 1; + case OPTION_NO_UNKNOWN_INTR_NOPS: + do_unknown_interrupt_nops = FALSE; + return 1; + + case OPTION_MOVE_DATA: + move_data = TRUE; + return 1; + + case OPTION_DATA_REGION: + if (strcmp (arg, "upper") == 0 + || strcmp (arg, "either") == 0) + upper_data_region_in_use = TRUE; + if (strcmp (arg, "upper") == 0 + || strcmp (arg, "either") == 0 + /* With data-region=none, the compiler has generated code assuming + data could be in the upper region, but nothing has been explicitly + placed there. */ + || strcmp (arg, "none") == 0) + lower_data_region_only = FALSE; + return 1; + } + + return 0; +} + +/* The intention here is to have the mere presence of these sections + cause the object to have a reference to a well-known symbol. This + reference pulls in the bits of the runtime (crt0) that initialize + these sections. Thus, for example, the startup code to call + memset() to initialize .bss will only be linked in when there is a + non-empty .bss section. Otherwise, the call would exist but have a + zero length parameter, which is a waste of memory and cycles. + + The code which initializes these sections should have a global + label for these symbols, and should be marked with KEEP() in the + linker script. */ + +static void +msp430_make_init_symbols (const char * name) +{ + if (strncmp (name, ".bss", 4) == 0 + || strncmp (name, ".lower.bss", 10) == 0 + || strncmp (name, ".either.bss", 11) == 0 + || strncmp (name, ".gnu.linkonce.b.", 16) == 0) + (void) symbol_find_or_make ("__crt0_init_bss"); + + if (strncmp (name, ".data", 5) == 0 + || strncmp (name, ".lower.data", 11) == 0 + || strncmp (name, ".either.data", 12) == 0 + || strncmp (name, ".gnu.linkonce.d.", 16) == 0) + (void) symbol_find_or_make ("__crt0_movedata"); + /* Note - data assigned to the .either.data section may end up being + placed in the .upper.data section if the .lower.data section is + full. Hence the need to define the crt0 symbol. + The linker may create upper or either data sections, even when none exist + at the moment, so use the value of the data-region flag to determine if + the symbol is needed. */ + if (strncmp (name, ".either.data", 12) == 0 + || strncmp (name, ".upper.data", 11) == 0 + || upper_data_region_in_use) + (void) symbol_find_or_make ("__crt0_move_highdata"); + + /* See note about .either.data above. */ + if (strncmp (name, ".upper.bss", 10) == 0 + || strncmp (name, ".either.bss", 11) == 0 + || upper_data_region_in_use) + (void) symbol_find_or_make ("__crt0_init_highbss"); + + /* The following symbols are for the crt0 functions that run through + the different .*_array sections and call the functions placed there. + - init_array stores global static C++ constructors to run before main. + - preinit_array is not expected to ever be used for MSP430. + GCC only places initialization functions for runtime "sanitizers" + (i.e. {a,l,t,u}san) and "virtual table verification" in preinit_array. + - fini_array stores global static C++ destructors to run after calling + exit() or returning from main. + __crt0_run_array is required to actually call the functions in the above + arrays. */ + if (strncmp (name, ".init_array", 11) == 0) + { + (void) symbol_find_or_make ("__crt0_run_init_array"); + (void) symbol_find_or_make ("__crt0_run_array"); + } + else if (strncmp (name, ".preinit_array", 14) == 0) + { + (void) symbol_find_or_make ("__crt0_run_preinit_array"); + (void) symbol_find_or_make ("__crt0_run_array"); + } + else if (strncmp (name, ".fini_array", 11) == 0) + { + (void) symbol_find_or_make ("__crt0_run_fini_array"); + (void) symbol_find_or_make ("__crt0_run_array"); + } +} + +static void +msp430_section (int arg) +{ + char * saved_ilp = input_line_pointer; + const char * name = obj_elf_section_name (); + + msp430_make_init_symbols (name); + + input_line_pointer = saved_ilp; + obj_elf_section (arg); +} + +void +msp430_frob_section (asection *sec) +{ + const char *name = sec->name; + + if (sec->size == 0) + return; + + msp430_make_init_symbols (name); +} + +static void +msp430_lcomm (int ignore ATTRIBUTE_UNUSED) +{ + symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); + + if (symbolP) + symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; + (void) symbol_find_or_make ("__crt0_init_bss"); +} + +static void +msp430_comm (int needs_align) +{ + s_comm_internal (needs_align, elf_common_parse); + (void) symbol_find_or_make ("__crt0_init_bss"); +} + +static void +msp430_refsym (int arg ATTRIBUTE_UNUSED) +{ + char sym_name[1024]; + input_line_pointer = extract_word (input_line_pointer, sym_name, 1024); + + (void) symbol_find_or_make (sym_name); +} + +/* Handle a .mspabi_attribute or .gnu_attribute directive. + attr_type is 0 for .mspabi_attribute or 1 for .gnu_attribute. + This is only used for validating the attributes in the assembly file against + the options gas has been invoked with. If the attributes and options are + compatible then we add the attributes to the assembly file in + msp430_md_end. */ +static void +msp430_object_attribute (int attr_type) +{ + char tag_name_s[32]; + char tag_value_s[32]; + int tag_name, tag_value; + /* First operand is the tag name, second is the tag value e.g. + ".mspabi_attribute 4, 2". */ + input_line_pointer = extract_operand (input_line_pointer, tag_name_s, 32); + input_line_pointer = extract_operand (input_line_pointer, tag_value_s, 32); + tag_name = atoi (tag_name_s); + tag_value = atoi (tag_value_s); + /* If the attribute directive is present, the tag_value should never be set + to 0. */ + if (tag_name == 0 || tag_value == 0) + as_bad (_("bad arguments \"%s\" and/or \"%s\" in %s directive"), + tag_name_s, tag_value_s, (attr_type ? ".gnu_attribute" + : ".mspabi_attribute")); + else if (attr_type == 0) + /* Handle .mspabi_attribute. */ + switch (tag_name) + { + case OFBA_MSPABI_Tag_ISA: + switch (tag_value) + { + case OFBA_MSPABI_Val_ISA_MSP430: + if (target_is_430x ()) + as_bad (_("file was compiled for the 430 ISA but the %s ISA is " + "selected"), (target_is_430xv2 () ? "430X" : "430Xv2")); + break; + case OFBA_MSPABI_Val_ISA_MSP430X: + if (!target_is_430x ()) + as_bad (_("file was compiled for the 430X ISA but the 430 ISA is " + "selected")); + break; + default: + as_bad (_("unknown MSPABI build attribute value '%d' for " + "OFBA_MSPABI_Tag_ISA(%d) in .mspabi_attribute directive"), + tag_value, OFBA_MSPABI_Tag_ISA); + break; + } + break; + case OFBA_MSPABI_Tag_Code_Model: + /* Fall through. */ + case OFBA_MSPABI_Tag_Data_Model: + /* FIXME: Might we want to set the memory model to large if the assembly + file has the large model attribute, but -ml has not been passed? */ + switch (tag_value) + { + case OFBA_MSPABI_Val_Code_Model_SMALL: + if (large_model) + as_bad (_("file was compiled for the small memory model, but the " + "large memory model is selected")); + break; + case OFBA_MSPABI_Val_Code_Model_LARGE: + if (!large_model) + as_bad (_("file was compiled for the large memory model, " + "but the small memory model is selected")); + break; + default: + as_bad (_("unknown MSPABI build attribute value '%d' for %s(%d) " + "in .mspabi_attribute directive"), tag_value, + (tag_name == OFBA_MSPABI_Tag_Code_Model + ? "OFBA_MSPABI_Tag_Code_Model" + : "OFBA_MSPABI_Tag_Data_Model"), + (tag_name == OFBA_MSPABI_Tag_Code_Model + ? OFBA_MSPABI_Tag_Code_Model + : OFBA_MSPABI_Tag_Data_Model)); + break; + } + break; + default: + as_bad (_("unknown MSPABI build attribute tag '%d' in " + ".mspabi_attribute directive"), tag_name); + break; + } + else if (attr_type == 1) + /* Handle .gnu_attribute. */ + switch (tag_name) + { + case Tag_GNU_MSP430_Data_Region: + /* This attribute is only applicable in the large memory model. */ + if (!large_model) + break; + switch (tag_value) + { + case Val_GNU_MSP430_Data_Region_Lower: + if (!lower_data_region_only) + as_bad (_("file was compiled assuming all data will be in the " + "lower memory region, but the upper region is in use")); + break; + case Val_GNU_MSP430_Data_Region_Any: + if (lower_data_region_only) + as_bad (_("file was compiled assuming data could be in the upper " + "memory region, but the lower data region is " + "exclusively in use")); + break; + default: + as_bad (_("unknown GNU build attribute value '%d' for " + "Tag_GNU_MSP430_Data_Region(%d) in .gnu_attribute " + "directive"), tag_value, Tag_GNU_MSP430_Data_Region); + } + } + else + as_bad (_("internal: unexpected argument '%d' to msp430_object_attribute"), + attr_type); +} + +const pseudo_typeS md_pseudo_table[] = +{ + {"arch", msp430_set_arch, OPTION_MMCU}, + {"cpu", msp430_set_arch, OPTION_MCPU}, + {"profiler", msp430_profiler, 0}, + {"section", msp430_section, 0}, + {"section.s", msp430_section, 0}, + {"sect", msp430_section, 0}, + {"sect.s", msp430_section, 0}, + {"pushsection", msp430_section, 1}, + {"refsym", msp430_refsym, 0}, + {"comm", msp430_comm, 0}, + {"lcomm", msp430_lcomm, 0}, + {"mspabi_attribute", msp430_object_attribute, 0}, + {"gnu_attribute", msp430_object_attribute, 1}, + {NULL, NULL, 0} +}; + +const char *md_shortopts = "mm:,mP,mQ,ml,mN,mn,my,mY,mu,mU"; + +struct option md_longopts[] = +{ + {"msilicon-errata", required_argument, NULL, OPTION_SILICON_ERRATA}, + {"msilicon-errata-warn", required_argument, NULL, OPTION_SILICON_ERRATA_WARN}, + {"mmcu", required_argument, NULL, OPTION_MMCU}, + {"mcpu", required_argument, NULL, OPTION_MCPU}, + {"mP", no_argument, NULL, OPTION_POLYMORPHS}, + {"mQ", no_argument, NULL, OPTION_RELAX}, + {"ml", no_argument, NULL, OPTION_LARGE}, + {"mN", no_argument, NULL, OPTION_NO_INTR_NOPS}, + {"mn", no_argument, NULL, OPTION_INTR_NOPS}, + {"mY", no_argument, NULL, OPTION_NO_WARN_INTR_NOPS}, + {"my", no_argument, NULL, OPTION_WARN_INTR_NOPS}, + {"mu", no_argument, NULL, OPTION_UNKNOWN_INTR_NOPS}, + {"mU", no_argument, NULL, OPTION_NO_UNKNOWN_INTR_NOPS}, + {"md", no_argument, NULL, OPTION_MOVE_DATA}, + {"mdata-region", required_argument, NULL, OPTION_DATA_REGION}, + {NULL, no_argument, NULL, 0} +}; + +size_t md_longopts_size = sizeof (md_longopts); + +void +md_show_usage (FILE * stream) +{ + fprintf (stream, + _("MSP430 options:\n" + " -mmcu= - select microcontroller type\n" + " -mcpu={430|430x|430xv2} - select microcontroller architecture\n")); + fprintf (stream, + _(" -msilicon-errata=[,...] - enable fixups for silicon errata\n" + " -msilicon-errata-warn=[,...] - warn when a fixup might be needed\n" + " supported errata names: cpu4, cpu8, cpu11, cpu12, cpu13, cpu19\n")); + fprintf (stream, + _(" -mQ - enable relaxation at assembly time. DANGEROUS!\n" + " -mP - enable polymorph instructions\n")); + fprintf (stream, + _(" -ml - enable large code model\n")); + fprintf (stream, + _(" -mN - do not insert NOPs after changing interrupts (default)\n")); + fprintf (stream, + _(" -mn - insert a NOP after changing interrupts\n")); + fprintf (stream, + _(" -mY - do not warn about missing NOPs after changing interrupts\n")); + fprintf (stream, + _(" -my - warn about missing NOPs after changing interrupts (default)\n")); + fprintf (stream, + _(" -mU - for an instruction which changes interrupt state, but where it is not\n" + " known how the state is changed, do not warn/insert NOPs\n")); + fprintf (stream, + _(" -mu - for an instruction which changes interrupt state, but where it is not\n" + " known how the state is changed, warn/insert NOPs (default)\n" + " -mn and/or -my are required for this to have any effect\n")); + fprintf (stream, + _(" -md - Force copying of data from ROM to RAM at startup\n")); + fprintf (stream, + _(" -mdata-region={none|lower|upper|either} - select region data will be\n" + " placed in.\n")); +} + +symbolS * +md_undefined_symbol (char * name ATTRIBUTE_UNUSED) +{ + return NULL; +} + +static char * +extract_cmd (char * from, char * to, int limit) +{ + int size = 0; + + while (*from && ! ISSPACE (*from) && *from != '.' && limit > size) + { + *(to + size) = *from; + from++; + size++; + } + + *(to + size) = 0; + + return from; +} + +const char * +md_atof (int type, char * litP, int * sizeP) +{ + return ieee_md_atof (type, litP, sizeP, FALSE); +} + +void +md_begin (void) +{ + struct msp430_opcode_s * opcode; + msp430_hash = hash_new (); + + for (opcode = msp430_opcodes; opcode->name; opcode++) + hash_insert (msp430_hash, opcode->name, (char *) opcode); + + bfd_set_arch_mach (stdoutput, TARGET_ARCH, + target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); + + /* Set linkrelax here to avoid fixups in most sections. */ + linkrelax = 1; +} + +static inline bfd_boolean +is_regname_end (char c) +{ + return (c == 0 || ! ISALNUM (c)); +} + +/* Returns the register number equivalent to the string T. + Returns -1 if there is no such register. + Skips a leading 'r' or 'R' character if there is one. + Handles the register aliases PC and SP. */ + +static signed int +check_reg (char * t) +{ + char * endt; + signed long int val; + + if (t == NULL || t[0] == 0) + return -1; + + if (*t == 'r' || *t == 'R') + ++t; + + if (strncasecmp (t, "pc", 2) == 0 && is_regname_end (t[2])) + return 0; + + if (strncasecmp (t, "sp", 2) == 0 && is_regname_end (t[2])) + return 1; + + if (strncasecmp (t, "sr", 2) == 0 && is_regname_end (t[2])) + return 2; + + if (*t == '0' && is_regname_end (t[1])) + return 0; + + val = strtol (t, & endt, 0); + + if (val < 1 || val > 15) + return -1; + + if (is_regname_end (*endt)) + return val; + + return -1; +} + +static int +msp430_srcoperand (struct msp430_operand_s * op, + char * l, + int bin, + bfd_boolean * imm_op, + bfd_boolean allow_20bit_values, + bfd_boolean constants_allowed) +{ + char * end; + char *__tl = l; + + /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */ + if (*l == '#') + { + char *h = l; + int vshift = -1; + int rval = 0; + + /* Check if there is: + llo(x) - least significant 16 bits, x &= 0xffff + lhi(x) - x = (x >> 16) & 0xffff, + hlo(x) - x = (x >> 32) & 0xffff, + hhi(x) - x = (x >> 48) & 0xffff + The value _MUST_ be constant expression: #hlo(1231231231). */ + + *imm_op = TRUE; + + if (strncasecmp (h, "#llo(", 5) == 0) + { + vshift = 0; + rval = 3; + } + else if (strncasecmp (h, "#lhi(", 5) == 0) + { + vshift = 1; + rval = 3; + } + else if (strncasecmp (h, "#hlo(", 5) == 0) + { + vshift = 2; + rval = 3; + } + else if (strncasecmp (h, "#hhi(", 5) == 0) + { + vshift = 3; + rval = 3; + } + else if (strncasecmp (h, "#lo(", 4) == 0) + { + vshift = 0; + rval = 2; + } + else if (strncasecmp (h, "#hi(", 4) == 0) + { + vshift = 1; + rval = 2; + } + + op->reg = 0; /* Reg PC. */ + op->am = 3; + op->ol = 1; /* Immediate will follow an instruction. */ + __tl = h + 1 + rval; + op->mode = OP_EXP; + op->vshift = vshift; + + end = parse_exp (__tl, &(op->exp)); + if (end != NULL && *end != 0 && *end != ')' ) + { + as_bad (_("extra characters '%s' at end of immediate expression '%s'"), end, l); + return 1; + } + if (op->exp.X_op == O_constant) + { + int x = op->exp.X_add_number; + + if (vshift == 0) + { + x = x & 0xffff; + op->exp.X_add_number = x; + } + else if (vshift == 1) + { + x = (x >> 16) & 0xffff; + op->exp.X_add_number = x; + op->vshift = 0; + } + else if (vshift > 1) + { + if (x < 0) + op->exp.X_add_number = -1; + else + op->exp.X_add_number = 0; /* Nothing left. */ + x = op->exp.X_add_number; + op->vshift = 0; + } + + if (allow_20bit_values) + { + if (op->exp.X_add_number > 0xfffff || op->exp.X_add_number < -524288) + { + as_bad (_("value 0x%x out of extended range."), x); + return 1; + } + } + else if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768) + { + as_bad (_("value %d out of range. Use #lo() or #hi()"), x); + return 1; + } + + /* Now check constants. */ + /* Substitute register mode with a constant generator if applicable. */ + + if (!allow_20bit_values) + x = (short) x; /* Extend sign. */ + + if (! constants_allowed) + ; + else if (x == 0) + { + op->reg = 3; + op->am = 0; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 1) + { + op->reg = 3; + op->am = 1; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 2) + { + op->reg = 3; + op->am = 2; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == -1) + { + op->reg = 3; + op->am = 3; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 4) + { + if (bin == 0x1200 && ! target_is_430x ()) + { + /* CPU4: The shorter form of PUSH #4 is not supported on MSP430. */ + if (silicon_errata_warn & SILICON_ERRATA_CPU4) + as_warn (_("cpu4: not converting PUSH #4 to shorter form")); + /* No need to check silicon_errata_fixes - this fix is always implemented. */ + } + else + { + op->reg = 2; + op->am = 2; + op->ol = 0; + op->mode = OP_REG; + } + } + else if (x == 8) + { + if (bin == 0x1200 && ! target_is_430x ()) + { + /* CPU4: The shorter form of PUSH #8 is not supported on MSP430. */ + if (silicon_errata_warn & SILICON_ERRATA_CPU4) + as_warn (_("cpu4: not converting PUSH #8 to shorter form")); + } + else + { + op->reg = 2; + op->am = 3; + op->ol = 0; + op->mode = OP_REG; + } + } + } + else if (op->exp.X_op == O_symbol) + { + if (vshift > 1) + as_bad (_("error: unsupported #foo() directive used on symbol")); + op->mode = OP_EXP; + } + else if (op->exp.X_op == O_big) + { + short x; + + if (vshift != -1) + { + op->exp.X_op = O_constant; + op->exp.X_add_number = 0xffff & generic_bignum[vshift]; + x = op->exp.X_add_number; + op->vshift = 0; + } + else + { + as_bad (_ + ("unknown expression in operand %s. Use #llo(), #lhi(), #hlo() or #hhi()"), + l); + return 1; + } + + if (x == 0) + { + op->reg = 3; + op->am = 0; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 1) + { + op->reg = 3; + op->am = 1; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 2) + { + op->reg = 3; + op->am = 2; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == -1) + { + op->reg = 3; + op->am = 3; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 4) + { + op->reg = 2; + op->am = 2; + op->ol = 0; + op->mode = OP_REG; + } + else if (x == 8) + { + op->reg = 2; + op->am = 3; + op->ol = 0; + op->mode = OP_REG; + } + } + /* Redundant (yet) check. */ + else if (op->exp.X_op == O_register) + as_bad + (_("Registers cannot be used within immediate expression [%s]"), l); + else + as_bad (_("unknown operand %s"), l); + + return 0; + } + + /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */ + if (*l == '&') + { + char *h = l; + + op->reg = 2; /* Reg 2 in absolute addr mode. */ + op->am = 1; /* Mode As == 01 bin. */ + op->ol = 1; /* Immediate value followed by instruction. */ + __tl = h + 1; + end = parse_exp (__tl, &(op->exp)); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at the end of absolute operand '%s'"), end, l); + return 1; + } + op->mode = OP_EXP; + op->vshift = 0; + if (op->exp.X_op == O_constant) + { + int x = op->exp.X_add_number; + + if (allow_20bit_values) + { + if (x > 0xfffff || x < -(0x7ffff)) + { + as_bad (_("value 0x%x out of extended range."), x); + return 1; + } + } + else if (x > 65535 || x < -32768) + { + as_bad (_("value out of range: 0x%x"), x); + return 1; + } + } + else if (op->exp.X_op == O_symbol) + ; + else + { + /* Redundant (yet) check. */ + if (op->exp.X_op == O_register) + as_bad + (_("Registers cannot be used within absolute expression [%s]"), l); + else + as_bad (_("unknown expression in operand %s"), l); + return 1; + } + return 0; + } + + /* Check if indirect register mode @Rn / postincrement @Rn+. */ + if (*l == '@') + { + char *t = l; + char *m = strchr (l, '+'); + + if (t != l) + { + as_bad (_("unknown addressing mode %s"), l); + return 1; + } + + t++; + + if ((op->reg = check_reg (t)) == -1) + { + as_bad (_("Bad register name %s"), t); + return 1; + } + + op->mode = OP_REG; + op->am = m ? 3 : 2; + op->ol = 0; + + /* PC cannot be used in indirect addressing. */ + if (target_is_430xv2 () && op->reg == 0) + { + as_bad (_("cannot use indirect addressing with the PC")); + return 1; + } + + return 0; + } + + /* Check if register indexed X(Rn). */ + do + { + char *h = strrchr (l, '('); + char *m = strrchr (l, ')'); + char *t; + + *imm_op = TRUE; + + if (!h) + break; + if (!m) + { + as_bad (_("')' required")); + return 1; + } + + t = h; + op->am = 1; + op->ol = 1; + + /* Extract a register. */ + if ((op->reg = check_reg (t + 1)) == -1) + { + as_bad (_ + ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"), + l); + return 1; + } + + if (op->reg == 2) + { + as_bad (_("r2 should not be used in indexed addressing mode")); + return 1; + } + + /* Extract constant. */ + __tl = l; + *h = 0; + op->mode = OP_EXP; + op->vshift = 0; + end = parse_exp (__tl, &(op->exp)); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); + return 1; + } + if (op->exp.X_op == O_constant) + { + int x = op->exp.X_add_number; + + if (allow_20bit_values) + { + if (x > 0xfffff || x < - (0x7ffff)) + { + as_bad (_("value 0x%x out of extended range."), x); + return 1; + } + } + else if (x > 65535 || x < -32768) + { + as_bad (_("value out of range: 0x%x"), x); + return 1; + } + + if (x == 0) + { + op->mode = OP_REG; + op->am = 2; + op->ol = 0; + return 0; + } + + if (op->reg == 1 && (x & 1)) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU8) + as_bad (_("CPU8: Stack pointer accessed with an odd offset")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU8) + as_warn (_("CPU8: Stack pointer accessed with an odd offset")); + } + } + else if (op->exp.X_op == O_symbol) + ; + else + { + /* Redundant (yet) check. */ + if (op->exp.X_op == O_register) + as_bad + (_("Registers cannot be used as a prefix of indexed expression [%s]"), l); + else + as_bad (_("unknown expression in operand %s"), l); + return 1; + } + + return 0; + } + while (0); + + /* Possibly register mode 'mov r1,r2'. */ + if ((op->reg = check_reg (l)) != -1) + { + op->mode = OP_REG; + op->am = 0; + op->ol = 0; + return 0; + } + + /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */ + op->mode = OP_EXP; + op->reg = 0; /* PC relative... be careful. */ + /* An expression starting with a minus sign is a constant, not an address. */ + op->am = (*l == '-' ? 3 : 1); + op->ol = 1; + op->vshift = 0; + __tl = l; + end = parse_exp (__tl, &(op->exp)); + if (end != NULL && * end != 0) + { + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); + return 1; + } + return 0; +} + + +static int +msp430_dstoperand (struct msp430_operand_s * op, + char * l, + int bin, + bfd_boolean allow_20bit_values, + bfd_boolean constants_allowed) +{ + int dummy; + int ret = msp430_srcoperand (op, l, bin, & dummy, + allow_20bit_values, + constants_allowed); + + if (ret) + return ret; + + if (op->am == 2) + { + char *__tl = (char *) "0"; + + op->mode = OP_EXP; + op->am = 1; + op->ol = 1; + op->vshift = 0; + (void) parse_exp (__tl, &(op->exp)); + + if (op->exp.X_op != O_constant || op->exp.X_add_number != 0) + { + as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"), + op->reg, op->reg); + return 1; + } + return 0; + } + + if (op->am > 1) + { + as_bad (_ + ("this addressing mode is not applicable for destination operand")); + return 1; + } + return 0; +} + +/* Attempt to encode a MOVA instruction with the given operands. + Returns the length of the encoded instruction if successful + or 0 upon failure. If the encoding fails, an error message + will be returned if a pointer is provided. */ + +static int +try_encode_mova (bfd_boolean imm_op, + int bin, + struct msp430_operand_s * op1, + struct msp430_operand_s * op2, + const char ** error_message_return) +{ + short ZEROS = 0; + char *frag; + int where; + + /* Only a restricted subset of the normal MSP430 addressing modes + are supported here, so check for the ones that are allowed. */ + if (imm_op) + { + if (op1->mode == OP_EXP) + { + if (op2->mode != OP_REG) + { + if (error_message_return != NULL) + * error_message_return = _("expected register as second argument of %s"); + return 0; + } + + if (op1->am == 3) + { + /* MOVA #imm20, Rdst. */ + bin |= 0x80 | op2->reg; + frag = frag_more (4); + where = frag - frag_now->fr_literal; + if (op1->exp.X_op == O_constant) + { + bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; + bfd_putl16 ((bfd_vma) bin, frag); + bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); + } + else + { + bfd_putl16 ((bfd_vma) bin, frag); + fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_SRC); + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + } + + return 4; + } + else if (op1->am == 1) + { + /* MOVA z16(Rsrc), Rdst. */ + bin |= 0x30 | (op1->reg << 8) | op2->reg; + frag = frag_more (4); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); + if (op1->exp.X_op == O_constant) + { + if (op1->exp.X_add_number > 0xffff + || op1->exp.X_add_number < -(0x7fff)) + { + if (error_message_return != NULL) + * error_message_return = _("index value too big for %s"); + return 0; + } + bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); + } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + fix_new_exp (frag_now, where + 2, 2, &(op1->exp), FALSE, + op1->reg == 0 ? + BFD_RELOC_MSP430X_PCR16 : + BFD_RELOC_MSP430X_ABS16); + } + return 4; + } + + if (error_message_return != NULL) + * error_message_return = _("unexpected addressing mode for %s"); + return 0; + } + else if (op1->am == 0) + { + /* MOVA Rsrc, ... */ + if (op2->mode == OP_REG) + { + bin |= 0xc0 | (op1->reg << 8) | op2->reg; + frag = frag_more (2); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); + return 2; + } + else if (op2->am == 1) + { + if (op2->reg == 2) + { + /* MOVA Rsrc, &abs20. */ + bin |= 0x60 | (op1->reg << 8); + frag = frag_more (4); + where = frag - frag_now->fr_literal; + if (op2->exp.X_op == O_constant) + { + bin |= (op2->exp.X_add_number >> 16) & 0xf; + bfd_putl16 ((bfd_vma) bin, frag); + bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); + } + else + { + bfd_putl16 ((bfd_vma) bin, frag); + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + fix_new_exp (frag_now, where, 4, &(op2->exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_DST); + } + return 4; + } + + /* MOVA Rsrc, z16(Rdst). */ + bin |= 0x70 | (op1->reg << 8) | op2->reg; + frag = frag_more (4); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); + if (op2->exp.X_op == O_constant) + { + if (op2->exp.X_add_number > 0xffff + || op2->exp.X_add_number < -(0x7fff)) + { + if (error_message_return != NULL) + * error_message_return = _("index value too big for %s"); + return 0; + } + bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); + } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + fix_new_exp (frag_now, where + 2, 2, &(op2->exp), FALSE, + op2->reg == 0 ? + BFD_RELOC_MSP430X_PCR16 : + BFD_RELOC_MSP430X_ABS16); + } + return 4; + } + + if (error_message_return != NULL) + * error_message_return = _("unexpected addressing mode for %s"); + return 0; + } + } + + /* imm_op == FALSE. */ + + if (op1->reg == 2 && op1->am == 1 && op1->mode == OP_EXP) + { + /* MOVA &abs20, Rdst. */ + if (op2->mode != OP_REG) + { + if (error_message_return != NULL) + * error_message_return = _("expected register as second argument of %s"); + return 0; + } + + if (op2->reg == 2 || op2->reg == 3) + { + if (error_message_return != NULL) + * error_message_return = _("constant generator destination register found in %s"); + return 0; + } + + bin |= 0x20 | op2->reg; + frag = frag_more (4); + where = frag - frag_now->fr_literal; + if (op1->exp.X_op == O_constant) + { + bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; + bfd_putl16 ((bfd_vma) bin, frag); + bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); + } + else + { + bfd_putl16 ((bfd_vma) bin, frag); + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_SRC); + } + return 4; + } + else if (op1->mode == OP_REG) + { + if (op1->am == 3) + { + /* MOVA @Rsrc+, Rdst. */ + if (op2->mode != OP_REG) + { + if (error_message_return != NULL) + * error_message_return = _("expected register as second argument of %s"); + return 0; + } + + if (op2->reg == 2 || op2->reg == 3) + { + if (error_message_return != NULL) + * error_message_return = _("constant generator destination register found in %s"); + return 0; + } + + if (op1->reg == 2 || op1->reg == 3) + { + if (error_message_return != NULL) + * error_message_return = _("constant generator source register found in %s"); + return 0; + } + + bin |= 0x10 | (op1->reg << 8) | op2->reg; + frag = frag_more (2); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); + return 2; + } + else if (op1->am == 2) + { + /* MOVA @Rsrc,Rdst */ + if (op2->mode != OP_REG) + { + if (error_message_return != NULL) + * error_message_return = _("expected register as second argument of %s"); + return 0; + } + + if (op2->reg == 2 || op2->reg == 3) + { + if (error_message_return != NULL) + * error_message_return = _("constant generator destination register found in %s"); + return 0; + } + + if (op1->reg == 2 || op1->reg == 3) + { + if (error_message_return != NULL) + * error_message_return = _("constant generator source register found in %s"); + return 0; + } + + bin |= (op1->reg << 8) | op2->reg; + frag = frag_more (2); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); + return 2; + } + } + + if (error_message_return != NULL) + * error_message_return = _("unexpected addressing mode for %s"); + + return 0; +} + +#define NOP_CHECK_INTERRUPT (1 << 0) +#define NOP_CHECK_CPU12 (1 << 1) +#define NOP_CHECK_CPU19 (1 << 2) + +static signed int check_for_nop = 0; + +#define is_opcode(NAME) (strcmp (opcode->name, NAME) == 0) + +/* is_{e,d}int only check the explicit enabling/disabling of interrupts. + For MOV insns, more sophisticated processing is needed to determine if they + result in enabling/disabling interrupts. */ +#define is_dint(OPCODE, BIN) ((strcmp (OPCODE, "dint") == 0) \ + || ((strcmp (OPCODE, "bic") == 0) \ + && BIN == 0xc232) \ + || ((strcmp (OPCODE, "clr") == 0) \ + && BIN == 0x4302)) + +#define is_eint(OPCODE, BIN) ((strcmp (OPCODE, "eint") == 0) \ + || ((strcmp (OPCODE, "bis") == 0) \ + && BIN == 0xd232)) + +const char * const INSERT_NOP_BEFORE_EINT = "NOP inserted here, before an interrupt enable instruction"; +const char * const INSERT_NOP_AFTER_DINT = "NOP inserted here, after an interrupt disable instruction"; +const char * const INSERT_NOP_AFTER_EINT = "NOP inserted here, after an interrupt enable instruction"; +const char * const INSERT_NOP_BEFORE_UNKNOWN = "NOP inserted here, before this interrupt state change"; +const char * const INSERT_NOP_AFTER_UNKNOWN ="NOP inserted here, after the instruction that changed interrupt state"; +const char * const INSERT_NOP_AT_EOF = "NOP inserted after the interrupt state change at the end of the file"; + +const char * const WARN_NOP_BEFORE_EINT = "a NOP might be needed here, before an interrupt enable instruction"; +const char * const WARN_NOP_AFTER_DINT = "a NOP might be needed here, after an interrupt disable instruction"; +const char * const WARN_NOP_AFTER_EINT = "a NOP might be needed here, after an interrupt enable instruction"; +const char * const WARN_NOP_BEFORE_UNKNOWN = "a NOP might be needed here, before this interrupt state change"; +const char * const WARN_NOP_AFTER_UNKNOWN = "a NOP might also be needed here, after the instruction that changed interrupt state"; +const char * const WARN_NOP_AT_EOF = "a NOP might be needed after the interrupt state change at the end of the file"; + +static void +gen_nop (void) +{ + char *frag; + frag = frag_more (2); + bfd_putl16 ((bfd_vma) 0x4303 /* NOP */, frag); + dwarf2_emit_insn (2); +} + +/* Insert/inform about adding a NOP if this insn enables interrupts. */ + +static void +warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint) +{ + if (prev_insn_is_nop + /* If the last insn was a DINT, we will have already warned that a NOP is + required after it. */ + || prev_insn_is_dint + /* 430 ISA does not require a NOP before EINT. */ + || (! target_is_430x ())) + return; + + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (_(INSERT_NOP_BEFORE_EINT)); + } + else if (warn_interrupt_nops) + as_warn (_(WARN_NOP_BEFORE_EINT)); +} + +/* Use when unsure what effect the insn will have on the interrupt status, + to insert/warn about adding a NOP before the current insn. */ + +static void +warn_unsure_interrupt (bfd_boolean prev_insn_is_nop, + bfd_boolean prev_insn_is_dint) +{ + if (prev_insn_is_nop + /* If the last insn was a DINT, we will have already warned that a NOP is + required after it. */ + || prev_insn_is_dint + /* 430 ISA does not require a NOP before EINT or DINT. */ + || (! target_is_430x ())) + return; + + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (_(INSERT_NOP_BEFORE_UNKNOWN)); + } + else if (warn_interrupt_nops) + as_warn (_(WARN_NOP_BEFORE_UNKNOWN)); +} + +/* Parse instruction operands. + Return binary opcode. */ + +static unsigned int +msp430_operands (struct msp430_opcode_s * opcode, char * line) +{ + int bin = opcode->bin_opcode; /* Opcode mask. */ + int insn_length = 0; + char l1[MAX_OP_LEN], l2[MAX_OP_LEN]; + char *frag; + char *end; + int where; + struct msp430_operand_s op1, op2; + int res = 0; + static short ZEROS = 0; + bfd_boolean byte_op, imm_op; + int op_length = 0; + int fmt; + int extended = 0x1800; + bfd_boolean extended_op = FALSE; + bfd_boolean addr_op; + const char * error_message; + static signed int repeat_count = 0; + static bfd_boolean prev_insn_is_nop = FALSE; + static bfd_boolean prev_insn_is_dint = FALSE; + static bfd_boolean prev_insn_is_eint = FALSE; + /* We might decide before the end of the function that the current insn is + equivalent to DINT/EINT. */ + bfd_boolean this_insn_is_dint = FALSE; + bfd_boolean this_insn_is_eint = FALSE; + bfd_boolean fix_emitted; + + /* Opcode is the one from opcodes table + line contains something like + [.w] @r2+, 5(R1) + or + .b @r2+, 5(R1). */ + + byte_op = FALSE; + addr_op = FALSE; + if (*line == '.') + { + bfd_boolean check = FALSE; + ++ line; + + switch (TOLOWER (* line)) + { + case 'b': + /* Byte operation. */ + bin |= BYTE_OPERATION; + byte_op = TRUE; + check = TRUE; + break; + + case 'a': + /* "Address" ops work on 20-bit values. */ + addr_op = TRUE; + bin |= BYTE_OPERATION; + check = TRUE; + break; + + case 'w': + /* Word operation - this is the default. */ + check = TRUE; + break; + + case 0: + case ' ': + case '\n': + case '\r': + as_warn (_("no size modifier after period, .w assumed")); + break; + + default: + as_bad (_("unrecognised instruction size modifier .%c"), + * line); + return 0; + } + + if (check) + { + ++ line; + + } + } + + if (*line && ! ISSPACE (*line)) + { + as_bad (_("junk found after instruction: %s.%s"), + opcode->name, line); + return 0; + } + + /* Catch the case where the programmer has used a ".a" size modifier on an + instruction that does not support it. Look for an alternative extended + instruction that has the same name without the period. Eg: "add.a" + becomes "adda". Although this not an officially supported way of + specifying instruction aliases other MSP430 assemblers allow it. So we + support it for compatibility purposes. */ + if (addr_op && opcode->fmt >= 0) + { + const char * old_name = opcode->name; + char real_name[32]; + + sprintf (real_name, "%sa", old_name); + opcode = hash_find (msp430_hash, real_name); + if (opcode == NULL) + { + as_bad (_("instruction %s.a does not exist"), old_name); + return 0; + } +#if 0 /* Enable for debugging. */ + as_warn ("treating %s.a as %s", old_name, real_name); +#endif + addr_op = FALSE; + bin = opcode->bin_opcode; + } + + if (opcode->fmt != -1 + && opcode->insn_opnumb + && (!*line || *line == '\n')) + { + as_bad (ngettext ("instruction %s requires %d operand", + "instruction %s requires %d operands", + opcode->insn_opnumb), + opcode->name, opcode->insn_opnumb); + return 0; + } + + memset (l1, 0, sizeof (l1)); + memset (l2, 0, sizeof (l2)); + memset (&op1, 0, sizeof (op1)); + memset (&op2, 0, sizeof (op2)); + + imm_op = FALSE; + + if ((fmt = opcode->fmt) < 0) + { + if (! target_is_430x ()) + { + as_bad (_("instruction %s requires MSP430X mcu"), + opcode->name); + return 0; + } + + fmt = (-fmt) - 1; + extended_op = TRUE; + } + + if (repeat_count) + { + /* If requested set the extended instruction repeat count. */ + if (extended_op) + { + if (repeat_count > 0) + extended |= (repeat_count - 1); + else + extended |= (1 << 7) | (- repeat_count); + } + else + as_bad (_("unable to repeat %s insn"), opcode->name); + + repeat_count = 0; + } + + /* The previous instruction set this flag if it wants to check if this insn + is a NOP. */ + if (check_for_nop) + { + if (! is_opcode ("nop")) + { + do + { + switch (check_for_nop & - check_for_nop) + { + case NOP_CHECK_INTERRUPT: + /* NOP_CHECK_INTERRUPT rules: + 1. 430 and 430x ISA require a NOP after DINT. + 2. Only the 430x ISA requires NOP before EINT (this has + been dealt with in the previous call to this function). + 3. Only the 430x ISA requires NOP after every EINT. + CPU42 errata. */ + if (gen_interrupt_nops || warn_interrupt_nops) + { + if (prev_insn_is_dint) + { + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (_(INSERT_NOP_AFTER_DINT)); + } + else + as_warn (_(WARN_NOP_AFTER_DINT)); + } + else if (prev_insn_is_eint) + { + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (_(INSERT_NOP_AFTER_EINT)); + } + else + as_warn (_(WARN_NOP_AFTER_EINT)); + } + /* If we get here it's because the last instruction was + determined to either disable or enable interrupts, but + we're not sure which. + We have no information yet about what effect the + current instruction has on interrupts, that has to be + sorted out later. + The last insn may have required a NOP after it, so we + deal with that now. */ + else + { + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (_(INSERT_NOP_AFTER_UNKNOWN)); + } + else + /* warn_unsure_interrupt was called on the previous + insn. */ + as_warn (_(WARN_NOP_AFTER_UNKNOWN)); + } + } + break; + + case NOP_CHECK_CPU12: + if (silicon_errata_warn & SILICON_ERRATA_CPU12) + as_warn (_("CPU12: CMP/BIT with PC destination ignores next instruction")); + + if (silicon_errata_fix & SILICON_ERRATA_CPU12) + gen_nop (); + break; + + case NOP_CHECK_CPU19: + if (silicon_errata_warn & SILICON_ERRATA_CPU19) + as_warn (_("CPU19: Instruction setting CPUOFF must be followed by a NOP")); + + if (silicon_errata_fix & SILICON_ERRATA_CPU19) + gen_nop (); + break; + + default: + as_bad (_("internal error: unknown nop check state")); + break; + } + check_for_nop &= ~ (check_for_nop & - check_for_nop); + } + while (check_for_nop); + } + check_for_nop = 0; + } + + switch (fmt) + { + case 0: + /* Emulated. */ + switch (opcode->insn_opnumb) + { + case 0: + if (is_opcode ("eint")) + warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); + + /* Set/clear bits instructions. */ + if (extended_op) + { + if (!addr_op) + extended |= BYTE_OPERATION; + + /* Emit the extension word. */ + insn_length += 2; + frag = frag_more (2); + bfd_putl16 (extended, frag); + } + + insn_length += 2; + frag = frag_more (2); + bfd_putl16 ((bfd_vma) bin, frag); + dwarf2_emit_insn (insn_length); + break; + + case 1: + /* Something which works with destination operand. */ + line = extract_operand (line, l1, sizeof (l1)); + res = msp430_dstoperand (&op1, l1, opcode->bin_opcode, extended_op, TRUE); + if (res) + break; bin |= (op1.reg | (op1.am << 7)); - __is = 1 + op1.ol; - frag = frag_more (2 * __is); + + /* If the PC is the destination... */ + if (op1.am == 0 && op1.reg == 0 + /* ... and the opcode alters the SR. */ + && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") + || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU11) + as_bad (_("CPU11: PC is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU11) + as_warn (_("CPU11: PC is destination of SR altering instruction")); + } + + /* If the status register is the destination... */ + if (op1.am == 0 && op1.reg == 2 + /* ... and the opcode alters the SR. */ + && (is_opcode ("adc") || is_opcode ("dec") || is_opcode ("decd") + || is_opcode ("inc") || is_opcode ("incd") || is_opcode ("inv") + || is_opcode ("sbc") || is_opcode ("sxt") + || is_opcode ("adcx") || is_opcode ("decx") || is_opcode ("decdx") + || is_opcode ("incx") || is_opcode ("incdx") || is_opcode ("invx") + || is_opcode ("sbcx") + )) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU13) + as_bad (_("CPU13: SR is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU13) + as_warn (_("CPU13: SR is destination of SR altering instruction")); + } + + /* Compute the entire instruction length, in bytes. */ + op_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); + insn_length += op_length; + frag = frag_more (op_length); where = frag - frag_now->fr_literal; + + if (extended_op) + { + if (!addr_op) + extended |= BYTE_OPERATION; + + if (op1.ol != 0 && ((extended & 0xf) != 0)) + { + as_bad (_("repeat instruction used with non-register mode instruction")); + extended &= ~ 0xf; + } + + if (op1.mode == OP_EXP) + { + if (op1.exp.X_op == O_constant) + extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; + + else if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_EXT_SRC); + else + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_PCR20_EXT_SRC); + } + + /* Emit the extension word. */ + bfd_putl16 (extended, frag); + frag += 2; + where += 2; + } + bfd_putl16 ((bfd_vma) bin, frag); + frag += 2; + where += 2; if (op1.mode == OP_EXP) { - where += 2; - bfd_putl16 ((bfd_vma) ZEROS, frag + 2); - - if (op1.reg) - fix_new_exp (frag_now, where, 2, - &(op1.exp), FALSE, CHECK_RELOC_MSP430); + if (op1.exp.X_op == O_constant) + { + bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); + } else - fix_new_exp (frag_now, where, 2, - &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op1.reg) + fix_new_exp (frag_now, where, 2, + &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); + else + fix_new_exp (frag_now, where, 2, + &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } } + + dwarf2_emit_insn (insn_length); break; case 2: - { - /* Shift instruction. */ - line = extract_operand (line, l1, sizeof (l1)); - strncpy (l2, l1, sizeof (l2)); - l2[sizeof (l2) - 1] = '\0'; - res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op); - res += msp430_dstoperand (&op2, l2, opcode->bin_opcode); - - if (res) - break; /* An error occurred. All warnings were done before. */ + /* Shift instruction. */ + line = extract_operand (line, l1, sizeof (l1)); + strncpy (l2, l1, sizeof (l2)); + l2[sizeof (l2) - 1] = '\0'; + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); + res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); - bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); + if (res) + break; /* An error occurred. All warnings were done before. */ - __is = 1 + op1.ol + op2.ol; /* insn size in words. */ - frag = frag_more (2 * __is); - where = frag - frag_now->fr_literal; - bfd_putl16 ((bfd_vma) bin, frag); + insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2) + (op2.ol * 2); + frag = frag_more (insn_length); + where = frag - frag_now->fr_literal; - if (op1.mode == OP_EXP) - { - where += 2; /* Advance 'where' as we do not know _where_. */ - bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + if (target_is_430xv2 () + && op1.mode == OP_REG + && op1.reg == 0 + && (is_opcode ("rlax") + || is_opcode ("rlcx") + || is_opcode ("rla") + || is_opcode ("rlc"))) + { + as_bad (_("%s: attempt to rotate the PC register"), opcode->name); + break; + } - if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */ - fix_new_exp (frag_now, where, 2, - &(op1.exp), FALSE, CHECK_RELOC_MSP430); - else - fix_new_exp (frag_now, where, 2, - &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); - } + /* If the status register is the destination... */ + if (op1.am == 0 && op1.reg == 2 + /* ... and the opcode alters the SR. */ + && (is_opcode ("rla") || is_opcode ("rlc") + || is_opcode ("rlax") || is_opcode ("rlcx") + || is_opcode ("sxt") || is_opcode ("sxtx") + || is_opcode ("swpb") + )) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU13) + as_bad (_("CPU13: SR is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU13) + as_warn (_("CPU13: SR is destination of SR altering instruction")); + } + + if (extended_op) + { + if (!addr_op) + extended |= BYTE_OPERATION; - if (op2.mode == OP_EXP) - { - imm_op = 0; - bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0)); + if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) + { + as_bad (_("repeat instruction used with non-register mode instruction")); + extended &= ~ 0xf; + } - if (op2.reg) /* Not PC relative. */ - fix_new_exp (frag_now, where + 2, 2, - &(op2.exp), FALSE, CHECK_RELOC_MSP430); - else - fix_new_exp (frag_now, where + 2, 2, - &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); - } - break; - } - case 3: - /* Branch instruction => mov dst, r0. */ - line = extract_operand (line, l1, sizeof (l1)); + if (op1.mode == OP_EXP) + { + if (op1.exp.X_op == O_constant) + extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; + + else if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_EXT_SRC); + else + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_PCR20_EXT_SRC); + } - res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op); - if (res) - break; + if (op2.mode == OP_EXP) + { + if (op2.exp.X_op == O_constant) + extended |= (op2.exp.X_add_number >> 16) & 0xf; + + else if (op1.mode == OP_EXP) + fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, + op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST + : BFD_RELOC_MSP430X_PCR20_EXT_ODST); + else + fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, + op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST + : BFD_RELOC_MSP430X_PCR20_EXT_DST); + } - byte_op = 0; - imm_op = 0; + /* Emit the extension word. */ + bfd_putl16 (extended, frag); + frag += 2; + where += 2; + } - bin |= ((op1.reg << 8) | (op1.am << 4)); - __is = 1 + op1.ol; - frag = frag_more (2 * __is); - where = frag - frag_now->fr_literal; + bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); bfd_putl16 ((bfd_vma) bin, frag); + frag += 2; + where += 2; if (op1.mode == OP_EXP) { + if (op1.exp.X_op == O_constant) + { + bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); + } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 2, + &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); + else + fix_new_exp (frag_now, where, 2, + &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } + frag += 2; where += 2; - bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + } - if (op1.reg || (op1.reg == 0 && op1.am == 3)) - fix_new_exp (frag_now, where, 2, - &(op1.exp), FALSE, CHECK_RELOC_MSP430); + if (op2.mode == OP_EXP) + { + if (op2.exp.X_op == O_constant) + { + bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); + } else - fix_new_exp (frag_now, where, 2, - &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op2.reg) /* Not PC relative. */ + fix_new_exp (frag_now, where, 2, + &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); + else + fix_new_exp (frag_now, where, 2, + &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } } - break; - } - break; - - case 1: /* Format 1, double operand. */ - line = extract_operand (line, l1, sizeof (l1)); - line = extract_operand (line, l2, sizeof (l2)); - res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op); - res += msp430_dstoperand (&op2, l2, opcode->bin_opcode); - - if (res) - break; /* Error occurred. All warnings were done before. */ - - bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); - - __is = 1 + op1.ol + op2.ol; /* insn size in words. */ - frag = frag_more (2 * __is); - where = frag - frag_now->fr_literal; - bfd_putl16 ((bfd_vma) bin, frag); - - if (op1.mode == OP_EXP) - { - where += 2; /* Advance where as we do not know _where_. */ - bfd_putl16 ((bfd_vma) ZEROS, frag + 2); - - if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */ - fix_new_exp (frag_now, where, 2, - &(op1.exp), FALSE, CHECK_RELOC_MSP430); - else - fix_new_exp (frag_now, where, 2, - &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); - } - if (op2.mode == OP_EXP) - { - imm_op = 0; - bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0)); - - if (op2.reg) /* Not PC relative. */ - fix_new_exp (frag_now, where + 2, 2, - &(op2.exp), FALSE, CHECK_RELOC_MSP430); - else - fix_new_exp (frag_now, where + 2, 2, - &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); - } - break; - - case 2: /* Single-operand mostly instr. */ - if (opcode->insn_opnumb == 0) - { - /* reti instruction. */ - frag = frag_more (2); - bfd_putl16 ((bfd_vma) bin, frag); + dwarf2_emit_insn (insn_length); break; - } - - line = extract_operand (line, l1, sizeof (l1)); - res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op); - if (res) - break; /* Error in operand. */ - bin |= op1.reg | (op1.am << 4); - __is = 1 + op1.ol; - frag = frag_more (2 * __is); - where = frag - frag_now->fr_literal; - bfd_putl16 ((bfd_vma) bin, frag); + case 3: + /* Branch instruction => mov dst, r0. */ + if (extended_op) + { + as_bad ("Internal error: state 0/3 not coded for extended instructions"); + break; + } - if (op1.mode == OP_EXP) - { - bfd_putl16 ((bfd_vma) ZEROS, frag + 2); + line = extract_operand (line, l1, sizeof (l1)); + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, FALSE); + if (res) + break; - if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */ - fix_new_exp (frag_now, where + 2, 2, - &(op1.exp), FALSE, CHECK_RELOC_MSP430); - else - fix_new_exp (frag_now, where + 2, 2, - &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); - } - break; + byte_op = FALSE; + imm_op = FALSE; + bin |= ((op1.reg << 8) | (op1.am << 4)); + op_length = 2 + 2 * op1.ol; + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; + bfd_putl16 ((bfd_vma) bin, frag); - case 3: /* Conditional jumps instructions. */ - line = extract_operand (line, l1, sizeof (l1)); - /* l1 is a label. */ - if (l1[0]) - { - char *m = l1; - expressionS exp; + if (op1.mode == OP_EXP) + { + if (op1.exp.X_op == O_constant) + { + bfd_putl16 (op1.exp.X_add_number & 0xffff, frag + 2); + } + else + { + where += 2; - if (*m == '$') - m++; + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); - parse_exp (m, &exp); - frag = frag_more (2); /* Instr size is 1 word. */ + if (op1.reg || op1.am == 3) + fix_new_exp (frag_now, where, 2, + &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); + else + fix_new_exp (frag_now, where, 2, + &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } - /* In order to handle something like: + dwarf2_emit_insn (insn_length + op_length); + break; - and #0x8000, r5 - tst r5 - jz 4 ; skip next 4 bytes - inv r5 - inc r5 - nop ; will jump here if r5 positive or zero + case 4: + /* CALLA instructions. */ + fix_emitted = FALSE; - jCOND -n ;assumes jump n bytes backward: + line = extract_operand (line, l1, sizeof (l1)); + imm_op = FALSE; - mov r5,r6 - jmp -2 + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, + extended_op, FALSE); + if (res) + break; - is equal to: - lab: - mov r5,r6 - jmp lab + byte_op = FALSE; - jCOND $n ; jump from PC in either direction. */ + op_length = 2 + 2 * op1.ol; + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; - if (exp.X_op == O_constant) + if (imm_op) { - int x = exp.X_add_number; + if (op1.am == 3) + { + bin |= 0xb0; - if (x & 1) + fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_DST); + fix_emitted = TRUE; + } + else if (op1.am == 1) { - as_warn (_("Even number required. Rounded to %d"), x + 1); - x++; + if (op1.reg == 0) + { + bin |= 0x90; + + fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_PCR20_CALL); + fix_emitted = TRUE; + } + else + bin |= 0x50 | op1.reg; } + else if (op1.am == 0) + bin |= 0x40 | op1.reg; + } + else if (op1.am == 1) + { + bin |= 0x80; - if ((*l1 == '$' && x > 0) || x < 0) - x -= 2; + fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_DST); + fix_emitted = TRUE; + } + else if (op1.am == 2) + bin |= 0x60 | op1.reg; + else if (op1.am == 3) + bin |= 0x70 | op1.reg; - x >>= 1; + bfd_putl16 ((bfd_vma) bin, frag); - if (x > 512 || x < -511) + if (op1.mode == OP_EXP) + { + if (op1.ol != 1) { - as_bad (_("Wrong displacement %d"), x << 1); + as_bad ("Internal error: unexpected CALLA instruction length: %d\n", op1.ol); break; } - bin |= x & 0x3ff; - bfd_putl16 ((bfd_vma) bin, frag); - } - else if (exp.X_op == O_symbol && *l1 != '$') - { - where = frag - frag_now->fr_literal; - fix_new_exp (frag_now, where, 2, - &exp, TRUE, BFD_RELOC_MSP430_10_PCREL); + bfd_putl16 ((bfd_vma) ZEROS, frag + 2); - bfd_putl16 ((bfd_vma) bin, frag); - } - else if (*l1 == '$') - { - as_bad (_("instruction requires label sans '$'")); - break; - } - else - { - as_bad (_ - ("instruction requires label or value in range -511:512")); - break; + if (! fix_emitted) + fix_new_exp (frag_now, where + 2, 2, + &(op1.exp), FALSE, BFD_RELOC_16); } - } - else - { - as_bad (_("instruction requires label")); + + dwarf2_emit_insn (insn_length + op_length); break; - } - break; - default: - as_bad (_("Ilegal instruction or not implmented opcode.")); - } + case 5: + { + int n; + int reg; - input_line_pointer = line; - return 0; -} + /* [POP|PUSH]M[.A] #N, Rd */ + line = extract_operand (line, l1, sizeof (l1)); + line = extract_operand (line, l2, sizeof (l2)); -static int -msp430_dstoperand (op, l, bin) - struct msp430_operand_s *op; - char *l; - int bin; -{ - int dummy; - int ret = msp430_srcoperand (op, l, bin, &dummy); - if (ret) - return ret; + if (*l1 != '#') + { + as_bad (_("expected #n as first argument of %s"), opcode->name); + break; + } + end = parse_exp (l1 + 1, &(op1.exp)); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at end of constant expression '%s'"), end, l1); + break; + } + if (op1.exp.X_op != O_constant) + { + as_bad (_("expected constant expression as first argument of %s"), + opcode->name); + break; + } - if (op->am == 2) - { - char *__tl = "0"; + if ((reg = check_reg (l2)) == -1) + { + as_bad (_("expected register as second argument of %s"), + opcode->name); + break; + } - op->mode = OP_EXP; - op->am = 1; - op->ol = 1; - parse_exp (__tl, &(op->exp)); - if (op->exp.X_op != O_constant || op->exp.X_add_number != 0) - { - as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"), - op->reg, op->reg); - return 1; - } - return 0; - } + op_length = 2; + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; + bin = opcode->bin_opcode; + if (! addr_op) + bin |= 0x100; + n = op1.exp.X_add_number; + bin |= (n - 1) << 4; + if (is_opcode ("pushm")) + bin |= reg; + else + { + if (reg - n + 1 < 0) + { + as_bad (_("Too many registers popped")); + break; + } + + /* CPU21 errata: cannot use POPM to restore the SR register. */ + if (target_is_430xv2 () + && (reg - n + 1 < 3) + && reg >= 2 + && is_opcode ("popm")) + { + as_bad (_("Cannot use POPM to restore the SR register")); + break; + } + + bin |= (reg - n + 1); + } - if (op->am > 1) - { - as_bad (_ - ("this addressing mode is not applicable for destination operand")); - return 1; - } - return 0; -} + bfd_putl16 ((bfd_vma) bin, frag); + dwarf2_emit_insn (op_length); + break; + } + + case 6: + { + int n; + int reg; + /* Bit rotation instructions. RRCM, RRAM, RRUM, RLAM. */ + if (extended & 0xff) + { + as_bad (_("repeat count cannot be used with %s"), opcode->name); + break; + } -static int -check_reg (t) - char *t; -{ - /* If this is a reg numb, str 't' must be a number from 0 - 15. */ + line = extract_operand (line, l1, sizeof (l1)); + line = extract_operand (line, l2, sizeof (l2)); - if (strlen (t) > 2 && *(t + 2) != '+') - return 1; + if (*l1 != '#') + { + as_bad (_("expected #n as first argument of %s"), opcode->name); + break; + } + end = parse_exp (l1 + 1, &(op1.exp)); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; + } + if (op1.exp.X_op != O_constant) + { + as_bad (_("expected constant expression as first argument of %s"), + opcode->name); + break; + } + n = op1.exp.X_add_number; + if (n > 4 || n < 1) + { + as_bad (_("expected first argument of %s to be in the range 1-4"), + opcode->name); + break; + } - while (*t) - { - if ((*t < '0' || *t > '9') && *t != '+') - break; - t++; - } + if ((reg = check_reg (l2)) == -1) + { + as_bad (_("expected register as second argument of %s"), + opcode->name); + break; + } - if (*t) - return 1; + if (target_is_430xv2 () && reg == 0) + { + as_bad (_("%s: attempt to rotate the PC register"), opcode->name); + break; + } - return 0; -} + op_length = 2; + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; + bin = opcode->bin_opcode; + if (! addr_op) + bin |= 0x10; + bin |= (n - 1) << 10; + bin |= reg; -static int -msp430_srcoperand (op, l, bin, imm_op) - struct msp430_operand_s *op; - char *l; - int bin; - int *imm_op; -{ - char *__tl = l; + bfd_putl16 ((bfd_vma) bin, frag); + dwarf2_emit_insn (op_length); + break; + } - /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */ - if (*l == '#') - { - char *h = l; - int vshift = -1; - int rval = 0; + case 8: + { + bfd_boolean need_reloc = FALSE; + int n; + int reg; - /* Check if there is: - llo(x) - least significant 16 bits, x &= 0xffff - lhi(x) - x = (x >> 16) & 0xffff, - hlo(x) - x = (x >> 32) & 0xffff, - hhi(x) - x = (x >> 48) & 0xffff - The value _MUST_ be constant expression: #hlo(1231231231). */ + /* ADDA, CMPA and SUBA address instructions. */ + if (extended & 0xff) + { + as_bad (_("repeat count cannot be used with %s"), opcode->name); + break; + } - *imm_op = 1; + line = extract_operand (line, l1, sizeof (l1)); + line = extract_operand (line, l2, sizeof (l2)); - if (strncasecmp (h, "#llo(", 5) == 0) - { - vshift = 0; - rval = 3; - } - else if (strncasecmp (h, "#lhi(", 5) == 0) - { - vshift = 1; - rval = 3; - } - else if (strncasecmp (h, "#hlo(", 5) == 0) - { - vshift = 2; - rval = 3; - } - else if (strncasecmp (h, "#hhi(", 5) == 0) - { - vshift = 3; - rval = 3; - } - else if (strncasecmp (h, "#lo(", 4) == 0) - { - vshift = 0; - rval = 2; - } - else if (strncasecmp (h, "#hi(", 4) == 0) - { - vshift = 1; - rval = 2; - } + bin = opcode->bin_opcode; - op->reg = 0; /* Reg PC. */ - op->am = 3; - op->ol = 1; /* Immediate will follow an instruction. */ - __tl = h + 1 + rval; - op->mode = OP_EXP; - parse_exp (__tl, &(op->exp)); - if (op->exp.X_op == O_constant) - { - int x = op->exp.X_add_number; + if (*l1 == '#') + { + end = parse_exp (l1 + 1, &(op1.exp)); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; + } + + if (op1.exp.X_op == O_constant) + { + n = op1.exp.X_add_number; + if (n > 0xfffff || n < - (0x7ffff)) + { + as_bad (_("expected value of first argument of %s to fit into 20-bits"), + opcode->name); + break; + } + + bin |= ((n >> 16) & 0xf) << 8; + } + else + { + n = 0; + need_reloc = TRUE; + } - if (vshift == 0) - { - x = x & 0xffff; - op->exp.X_add_number = x; - } - else if (vshift == 1) - { - x = (x >> 16) & 0xffff; - op->exp.X_add_number = x; - } - else if (vshift > 1) - { - if (x < 0) - op->exp.X_add_number = -1; - else - op->exp.X_add_number = 0; /* Nothing left. */ - x = op->exp.X_add_number; - } + op_length = 4; + } + else + { + if ((n = check_reg (l1)) == -1) + { + as_bad (_("expected register name or constant as first argument of %s"), + opcode->name); + break; + } + + bin |= (n << 8) | (1 << 6); + op_length = 2; + } - if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768) - { - as_bad (_("value %ld out of range. Use #lo() or #hi()"), x); - return 1; - } + if ((reg = check_reg (l2)) == -1) + { + as_bad (_("expected register as second argument of %s"), + opcode->name); + break; + } - /* Now check constants. */ - /* Substitute register mode with a constant generator if applicable. */ + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; + bin |= reg; + if (need_reloc) + fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_ADR_SRC); - x = (short) x; /* Extend sign. */ + bfd_putl16 ((bfd_vma) bin, frag); + if (op_length == 4) + bfd_putl16 ((bfd_vma) (n & 0xffff), frag + 2); + dwarf2_emit_insn (op_length); + break; + } - if (x == 0) - { - op->reg = 3; - op->am = 0; - op->ol = 0; - op->mode = OP_REG; - } - else if (x == 1) + case 9: /* MOVA, BRA, RETA. */ + imm_op = FALSE; + bin = opcode->bin_opcode; + + if (is_opcode ("reta")) { - op->reg = 3; - op->am = 1; - op->ol = 0; - op->mode = OP_REG; + /* The RETA instruction does not take any arguments. + The implicit first argument is @SP+. + The implicit second argument is PC. */ + op1.mode = OP_REG; + op1.am = 3; + op1.reg = 1; + + op2.mode = OP_REG; + op2.reg = 0; } - else if (x == 2) + else { - op->reg = 3; - op->am = 2; - op->ol = 0; - op->mode = OP_REG; + line = extract_operand (line, l1, sizeof (l1)); + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, + &imm_op, extended_op, FALSE); + + if (is_opcode ("bra")) + { + /* This is the BRA synthetic instruction. + The second argument is always PC. */ + op2.mode = OP_REG; + op2.reg = 0; + } + else + { + line = extract_operand (line, l2, sizeof (l2)); + res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, + extended_op, TRUE); + } + + if (res) + break; /* Error occurred. All warnings were done before. */ } - else if (x == -1) + + /* Only a restricted subset of the normal MSP430 addressing modes + are supported here, so check for the ones that are allowed. */ + if ((op_length = try_encode_mova (imm_op, bin, & op1, & op2, + & error_message)) == 0) { - op->reg = 3; - op->am = 3; - op->ol = 0; - op->mode = OP_REG; + as_bad (error_message, opcode->name); + break; } - else if (x == 4) + dwarf2_emit_insn (op_length); + break; + + case 10: /* RPT */ + line = extract_operand (line, l1, sizeof l1); + /* The RPT instruction only accepted immediates and registers. */ + if (*l1 == '#') { -#ifdef PUSH_1X_WORKAROUND - if (bin == 0x1200) + end = parse_exp (l1 + 1, &(op1.exp)); + if (end != NULL && *end != 0) { - /* Remove warning as confusing. - as_warn(_("Hardware push bug workaround")); */ + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; } - else -#endif + if (op1.exp.X_op != O_constant) { - op->reg = 2; - op->am = 2; - op->ol = 0; - op->mode = OP_REG; + as_bad (_("expected constant value as argument to RPT")); + break; + } + if (op1.exp.X_add_number < 1 + || op1.exp.X_add_number > (1 << 4)) + { + as_bad (_("expected constant in the range 2..16")); + break; } + + /* We silently accept and ignore a repeat count of 1. */ + if (op1.exp.X_add_number > 1) + repeat_count = op1.exp.X_add_number; } - else if (x == 8) + else { -#ifdef PUSH_1X_WORKAROUND - if (bin == 0x1200) + int reg; + + if ((reg = check_reg (l1)) != -1) { - /* Remove warning as confusing. - as_warn(_("Hardware push bug workaround")); */ + if (reg == 0) + as_warn (_("PC used as an argument to RPT")); + else + repeat_count = - reg; } else -#endif { - op->reg = 2; - op->am = 3; - op->ol = 0; - op->mode = OP_REG; + as_bad (_("expected constant or register name as argument to RPT insn")); + break; } } + break; + + default: + as_bad (_("Illegal emulated instruction")); + break; } - else if (op->exp.X_op == O_symbol) - { - op->mode = OP_EXP; - } - else if (op->exp.X_op == O_big) + break; + + /* FIXME: Emit warning when dest reg SR(R2) is addressed with .B or .A. + From f5 ref man 6.3.3: + The 16-bit Status Register (SR, also called R2), used as a source or + destination register, can only be used in register mode addressed + with word instructions. */ + + case 1: /* Format 1, double operand. */ + line = extract_operand (line, l1, sizeof (l1)); + line = extract_operand (line, l2, sizeof (l2)); + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); + res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); + + if (res) + break; /* Error occurred. All warnings were done before. */ + + if (extended_op + && is_opcode ("movx") + && addr_op + && msp430_enable_relax) { - short x; - if (vshift != -1) - { - op->exp.X_op = O_constant; - op->exp.X_add_number = 0xffff & generic_bignum[vshift]; - x = op->exp.X_add_number; - } - else + /* This is the MOVX.A instruction. See if we can convert + it into the MOVA instruction instead. This saves 2 bytes. */ + if ((op_length = try_encode_mova (imm_op, 0x0000, & op1, & op2, + NULL)) != 0) { - as_bad (_ - ("unknown expression in operand %s. use #llo() #lhi() #hlo() #hhi() "), - l); - return 1; + dwarf2_emit_insn (op_length); + break; } + } - if (x == 0) + bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); + + /* If the PC is the destination... */ + if (op2.am == 0 && op2.reg == 0 + /* ... and the opcode alters the SR. */ + && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") + || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU11) + as_bad (_("CPU11: PC is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU11) + as_warn (_("CPU11: PC is destination of SR altering instruction")); + } + + /* If the status register is the destination... */ + if (op2.am == 0 && op2.reg == 2 + /* ... and the opcode alters the SR. */ + && (is_opcode ("add") || is_opcode ("addc") || is_opcode ("and") + || is_opcode ("dadd") || is_opcode ("sub") || is_opcode ("subc") + || is_opcode ("xor") + || is_opcode ("addx") || is_opcode ("addcx") || is_opcode ("andx") + || is_opcode ("daddx") || is_opcode ("subx") || is_opcode ("subcx") + || is_opcode ("xorx") + )) + { + if (silicon_errata_fix & SILICON_ERRATA_CPU13) + as_bad (_("CPU13: SR is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU13) + as_warn (_("CPU13: SR is destination of SR altering instruction")); + } + + /* Chain these checks for SR manipulations so we can warn if they are not + caught. */ + if (((is_opcode ("bis") && bin == 0xd032) + || (is_opcode ("mov") && bin == 0x4032) + || (is_opcode ("xor") && bin == 0xe032)) + && op1.mode == OP_EXP + && op1.exp.X_op == O_constant + && (op1.exp.X_add_number & 0x10) == 0x10) + check_for_nop |= NOP_CHECK_CPU19; + else if ((is_opcode ("mov") && op2.mode == OP_REG && op2.reg == 2)) + { + /* Any MOV with the SR as the destination either enables or disables + interrupts. */ + if (op1.mode == OP_EXP + && op1.exp.X_op == O_constant) { - op->reg = 3; - op->am = 0; - op->ol = 0; - op->mode = OP_REG; + if ((op1.exp.X_add_number & 0x8) == 0x8) + { + /* The GIE bit is being set. */ + warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); + this_insn_is_eint = TRUE; + } + else + /* The GIE bit is being cleared. */ + this_insn_is_dint = TRUE; } - else if (x == 1) + /* If an immediate value which is covered by the constant generator + is the src, then op1 will have been changed to either R2 or R3 by + this point. + The only constants covered by CG1 and CG2, which have bit 3 set + and therefore would enable interrupts when writing to the SR, are + R2 with addresing mode 0b11 and R3 with 0b11. + The addressing mode is in bits 5:4 of the binary opcode. */ + else if (op1.mode == OP_REG + && (op1.reg == 2 || op1.reg == 3) + && (bin & 0x30) == 0x30) { - op->reg = 3; - op->am = 1; - op->ol = 0; - op->mode = OP_REG; + warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); + this_insn_is_eint = TRUE; } - else if (x == 2) + /* Any other use of the constant generator with destination R2, will + disable interrupts. */ + else if (op1.mode == OP_REG + && (op1.reg == 2 || op1.reg == 3)) + this_insn_is_dint = TRUE; + else if (do_unknown_interrupt_nops) { - op->reg = 3; - op->am = 2; - op->ol = 0; - op->mode = OP_REG; + /* FIXME: Couldn't work out whether the insn is enabling or + disabling interrupts, so for safety need to treat it as both + a DINT and EINT. */ + warn_unsure_interrupt (prev_insn_is_nop, prev_insn_is_dint); + check_for_nop |= NOP_CHECK_INTERRUPT; } - else if (x == -1) + } + else if (is_eint (opcode->name, bin)) + warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); + else if ((bin & 0x32) == 0x32) + { + /* Double-operand insn with the As==0b11 and Rdst==0x2 will result in + * an interrupt state change if a write happens. */ + /* FIXME: How strict to be here? */ + ; + } + + /* Compute the entire length of the instruction in bytes. */ + op_length = (extended_op ? 2 : 0) /* The extension word. */ + + 2 /* The opcode */ + + (2 * op1.ol) /* The first operand. */ + + (2 * op2.ol); /* The second operand. */ + + insn_length += op_length; + frag = frag_more (op_length); + where = frag - frag_now->fr_literal; + + if (extended_op) + { + if (!addr_op) + extended |= BYTE_OPERATION; + + if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) { - op->reg = 3; - op->am = 3; - op->ol = 0; - op->mode = OP_REG; + as_bad (_("repeat instruction used with non-register mode instruction")); + extended &= ~ 0xf; } - else if (x == 4) + + /* If necessary, emit a reloc to update the extension word. */ + if (op1.mode == OP_EXP) { - op->reg = 2; - op->am = 2; - op->ol = 0; - op->mode = OP_REG; + if (op1.exp.X_op == O_constant) + extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; + + else if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_EXT_SRC); + else + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_PCR20_EXT_SRC); } - else if (x == 8) + + if (op2.mode == OP_EXP) { - op->reg = 2; - op->am = 3; - op->ol = 0; - op->mode = OP_REG; + if (op2.exp.X_op == O_constant) + extended |= (op2.exp.X_add_number >> 16) & 0xf; + + else if (op1.mode == OP_EXP) + fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, + op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST + : BFD_RELOC_MSP430X_PCR20_EXT_ODST); + + else + fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, + op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST + : BFD_RELOC_MSP430X_PCR20_EXT_DST); } + + /* Emit the extension word. */ + bfd_putl16 (extended, frag); + where += 2; + frag += 2; } - else - { - as_bad (_("unknown operand %s"), l); - } - return 0; - } - /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */ - if (*l == '&') - { - char *h = l; + bfd_putl16 ((bfd_vma) bin, frag); + where += 2; + frag += 2; - op->reg = 2; /* reg 2 in absolute addr mode. */ - op->am = 1; /* mode As == 01 bin. */ - op->ol = 1; /* Immediate value followed by instruction. */ - __tl = h + 1; - parse_exp (__tl, &(op->exp)); - op->mode = OP_EXP; - if (op->exp.X_op == O_constant) + if (op1.mode == OP_EXP) { - int x = op->exp.X_add_number; - if (x > 65535 || x < -32768) + if (op1.exp.X_op == O_constant) { - as_bad (_("value out of range: %d"), x); - return 1; + bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 2, + &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); + else + fix_new_exp (frag_now, where, 2, + &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } + + where += 2; + frag += 2; } - else if (op->exp.X_op == O_symbol) - { - } - else + + if (op2.mode == OP_EXP) { - as_bad (_("unknown expression in operand %s"), l); - return 1; + if (op2.exp.X_op == O_constant) + { + bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); + } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op2.reg) /* Not PC relative. */ + fix_new_exp (frag_now, where, 2, + &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); + else + fix_new_exp (frag_now, where, 2, + &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } } - return 0; - } - /* Check if indirect register mode @Rn / postincrement @Rn+. */ - if (*l == '@') - { - char *t = l; - char *m = strchr (l, '+'); + dwarf2_emit_insn (insn_length); - if (t != l) - { - as_bad (_("unknown addressing mode %s"), l); - return 1; - } + /* If the PC is the destination... */ + if (op2.am == 0 && op2.reg == 0 + /* ... but the opcode does not alter the destination. */ + && (is_opcode ("cmp") || is_opcode ("bit") || is_opcode ("cmpx"))) + check_for_nop |= NOP_CHECK_CPU12; + break; - t++; - if (*t != 'r' && *t != 'R') + case 2: /* Single-operand mostly instr. */ + if (opcode->insn_opnumb == 0) { - as_bad (_("unknown addressing mode %s"), l); - return 1; + /* reti instruction. */ + insn_length += 2; + frag = frag_more (2); + bfd_putl16 ((bfd_vma) bin, frag); + dwarf2_emit_insn (insn_length); + break; } - t++; /* Points to the reg value. */ + line = extract_operand (line, l1, sizeof (l1)); + res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, + &imm_op, extended_op, TRUE); + if (res) + break; /* Error in operand. */ - if (check_reg (t)) + if (target_is_430xv2 () + && op1.mode == OP_REG + && op1.reg == 0 + && (is_opcode ("rrax") + || is_opcode ("rrcx") + || is_opcode ("rra") + || is_opcode ("rrc"))) { - as_bad (_("Bad register name r%s"), t); - return 1; + as_bad (_("%s: attempt to rotate the PC register"), opcode->name); + break; } - op->mode = OP_REG; - op->am = m ? 3 : 2; - op->ol = 0; - if (m) - *m = 0; /* strip '+' */ - op->reg = atoi (t); - if (op->reg < 0 || op->reg > 15) + /* If the status register is the destination... */ + if (op1.am == 0 && op1.reg == 2 + /* ... and the opcode alters the SR. */ + && (is_opcode ("rra") || is_opcode ("rrc") || is_opcode ("sxt"))) { - as_bad (_("MSP430 does not have %d registers"), op->reg); - return 1; + if (silicon_errata_fix & SILICON_ERRATA_CPU13) + as_bad (_("CPU13: SR is destination of SR altering instruction")); + else if (silicon_errata_warn & SILICON_ERRATA_CPU13) + as_warn (_("CPU13: SR is destination of SR altering instruction")); } + + insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); + frag = frag_more (insn_length); + where = frag - frag_now->fr_literal; - return 0; - } + if (extended_op) + { + if (is_opcode ("swpbx") || is_opcode ("sxtx")) + { + /* These two instructions use a special + encoding of the A/L and B/W bits. */ + bin &= ~ BYTE_OPERATION; - /* Check if register indexed X(Rn). */ - do - { - char *h = strrchr (l, '('); - char *m = strrchr (l, ')'); - char *t; + if (byte_op) + { + as_bad (_("%s instruction does not accept a .b suffix"), + opcode->name); + break; + } + else if (! addr_op) + extended |= BYTE_OPERATION; + } + else if (! addr_op) + extended |= BYTE_OPERATION; - *imm_op = 1; + if (is_opcode ("rrux")) + extended |= IGNORE_CARRY_BIT; + + if (op1.ol != 0 && ((extended & 0xf) != 0)) + { + as_bad (_("repeat instruction used with non-register mode instruction")); + extended &= ~ 0xf; + } - if (!h) - break; - if (!m) - { - as_bad (_("')' required")); - return 1; - } + if (op1.mode == OP_EXP) + { + if (op1.exp.X_op == O_constant) + extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; - t = h; - op->am = 1; - op->ol = 1; - /* Extract a register. */ - t++; /* Advance pointer. */ + else if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_ABS20_EXT_SRC); + else + fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, + BFD_RELOC_MSP430X_PCR20_EXT_SRC); + } - if (*t != 'r' && *t != 'R') - { - as_bad (_ - ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"), - l); - return 1; + /* Emit the extension word. */ + bfd_putl16 (extended, frag); + frag += 2; + where += 2; } - t++; - op->reg = *t - '0'; - if (op->reg > 9 || op->reg < 0) + bin |= op1.reg | (op1.am << 4); + bfd_putl16 ((bfd_vma) bin, frag); + frag += 2; + where += 2; + + if (op1.mode == OP_EXP) { - as_bad (_("unknown operator (r%s substituded as a register name"), - t); - return 1; + if (op1.exp.X_op == O_constant) + { + bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); + } + else + { + bfd_putl16 ((bfd_vma) ZEROS, frag); + + if (!extended_op) + { + if (op1.reg || op1.am == 3) /* Not PC relative. */ + fix_new_exp (frag_now, where, 2, + &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); + else + fix_new_exp (frag_now, where, 2, + &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); + } + } } - t++; - if (*t != ')') + + dwarf2_emit_insn (insn_length); + break; + + case 3: /* Conditional jumps instructions. */ + line = extract_operand (line, l1, sizeof (l1)); + /* l1 is a label. */ + if (l1[0]) { - op->reg = op->reg * 10; - op->reg += *t - '0'; + char *m = l1; + expressionS exp; + + if (*m == '$') + m++; - if (op->reg > 15) + end = parse_exp (m, &exp); + if (end != NULL && *end != 0) { - as_bad (_("unknown operator %s"), l); - return 1; + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; } - if (op->reg == 2) + + /* In order to handle something like: + + and #0x8000, r5 + tst r5 + jz 4 ; skip next 4 bytes + inv r5 + inc r5 + nop ; will jump here if r5 positive or zero + + jCOND -n ;assumes jump n bytes backward: + + mov r5,r6 + jmp -2 + + is equal to: + lab: + mov r5,r6 + jmp lab + + jCOND $n ; jump from PC in either direction. */ + + if (exp.X_op == O_constant) { - as_bad (_("r2 should not be used in indexed addressing mode")); - return 1; + int x = exp.X_add_number; + + if (x & 1) + { + as_warn (_("Even number required. Rounded to %d"), x + 1); + x++; + } + + if ((*l1 == '$' && x > 0) || x < 0) + x -= 2; + + x >>= 1; + + if (x > 512 || x < -511) + { + as_bad (_("Wrong displacement %d"), x << 1); + break; + } + + insn_length += 2; + frag = frag_more (2); /* Instr size is 1 word. */ + + bin |= x & 0x3ff; + bfd_putl16 ((bfd_vma) bin, frag); } + else if (exp.X_op == O_symbol && *l1 != '$') + { + insn_length += 2; + frag = frag_more (2); /* Instr size is 1 word. */ + where = frag - frag_now->fr_literal; + fix_new_exp (frag_now, where, 2, + &exp, TRUE, BFD_RELOC_MSP430_10_PCREL); - if (*(t + 1) != ')') + bfd_putl16 ((bfd_vma) bin, frag); + } + else if (*l1 == '$') { - as_bad (_("unknown operator %s"), l); - return 1; + as_bad (_("instruction requires label sans '$'")); } + else + as_bad (_ + ("instruction requires label or value in range -511:512")); + dwarf2_emit_insn (insn_length); + break; + } + else + { + as_bad (_("instruction requires label")); + break; } + break; - /* Extract constant. */ - __tl = l; - *h = 0; - op->mode = OP_EXP; - parse_exp (__tl, &(op->exp)); - if (op->exp.X_op == O_constant) + case 4: /* Extended jumps. */ + if (!msp430_enable_polys) { - int x = op->exp.X_add_number; + as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); + break; + } + + line = extract_operand (line, l1, sizeof (l1)); + if (l1[0]) + { + char *m = l1; + expressionS exp; - if (x > 65535 || x < -32768) + /* Ignore absolute addressing. make it PC relative anyway. */ + if (*m == '#' || *m == '$') + m++; + + end = parse_exp (m, & exp); + if (end != NULL && *end != 0) { - as_bad (_("value out of range: %d"), x); - return 1; + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; } - - if (x == 0) + if (exp.X_op == O_symbol) { - op->mode = OP_REG; - op->am = 2; - op->ol = 0; - return 0; + /* Relaxation required. */ + struct rcodes_s rc = msp430_rcodes[opcode->insn_opnumb]; + + if (target_is_430x ()) + rc = msp430x_rcodes[opcode->insn_opnumb]; + + /* The parameter to dwarf2_emit_insn is actually the offset to + the start of the insn from the fix piece of instruction that + was emitted. Since next fragments may have variable size we + tie debug info to the beginning of the instruction. */ + insn_length += 8; + frag = frag_more (8); + dwarf2_emit_insn (0); + bfd_putl16 ((bfd_vma) rc.sop, frag); + frag = frag_variant (rs_machine_dependent, 8, 2, + /* Wild guess. */ + ENCODE_RELAX (rc.lpos, STATE_BITS10), + exp.X_add_symbol, + 0, /* Offset is zero if jump dist less than 1K. */ + (char *) frag); + break; } } - else if (op->exp.X_op == O_symbol) + + as_bad (_("instruction requires label")); + break; + + case 5: /* Emulated extended branches. */ + if (!msp430_enable_polys) { + as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); + break; } - else + line = extract_operand (line, l1, sizeof (l1)); + if (l1[0]) { - as_bad (_("unknown expression in operand %s"), l); - return 1; + char * m = l1; + expressionS exp; + + /* Ignore absolute addressing. make it PC relative anyway. */ + if (*m == '#' || *m == '$') + m++; + + end = parse_exp (m, & exp); + if (end != NULL && *end != 0) + { + as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); + break; + } + if (exp.X_op == O_symbol) + { + /* Relaxation required. */ + struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb]; + + if (target_is_430x ()) + hc = msp430x_hcodes[opcode->insn_opnumb]; + + insn_length += 8; + frag = frag_more (8); + dwarf2_emit_insn (0); + bfd_putl16 ((bfd_vma) hc.op0, frag); + bfd_putl16 ((bfd_vma) hc.op1, frag+2); + + frag = frag_variant (rs_machine_dependent, 8, 2, + ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10), /* Wild guess. */ + exp.X_add_symbol, + 0, /* Offset is zero if jump dist less than 1K. */ + (char *) frag); + break; + } } - return 0; + as_bad (_("instruction requires label")); + break; + + default: + as_bad (_("Illegal instruction or not implemented opcode.")); } - while (0); - /* Register mode 'mov r1,r2'. */ - do - { - char *t = l; + if (is_opcode ("nop")) + { + prev_insn_is_nop = TRUE; + prev_insn_is_dint = FALSE; + prev_insn_is_eint = FALSE; + } + else if (this_insn_is_dint || is_dint (opcode->name, bin)) + { + prev_insn_is_dint = TRUE; + prev_insn_is_eint = FALSE; + prev_insn_is_nop = FALSE; + check_for_nop |= NOP_CHECK_INTERRUPT; + } + /* NOP is not needed after EINT for 430 ISA. */ + else if (target_is_430x () && (this_insn_is_eint || is_eint (opcode->name, bin))) + { + prev_insn_is_eint = TRUE; + prev_insn_is_nop = FALSE; + prev_insn_is_dint = FALSE; + check_for_nop |= NOP_CHECK_INTERRUPT; + } + else + { + prev_insn_is_nop = FALSE; + prev_insn_is_dint = FALSE; + prev_insn_is_eint = FALSE; + } - /* Operand should be a register. */ - if (*t == 'r' || *t == 'R') - { - int x = atoi (t + 1); + input_line_pointer = line; + return 0; +} - if (check_reg (t + 1)) - break; +void +md_assemble (char * str) +{ + struct msp430_opcode_s * opcode; + char cmd[32]; + unsigned int i = 0; - if (x < 0 || x > 15) - break; /* Symbolic mode. */ + str = skip_space (str); /* Skip leading spaces. */ + str = extract_cmd (str, cmd, sizeof (cmd) - 1); - op->mode = OP_REG; - op->am = 0; - op->ol = 0; - op->reg = x; - return 0; - } + while (cmd[i]) + { + char a = TOLOWER (cmd[i]); + cmd[i] = a; + i++; } - while (0); - /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */ - do + if (!cmd[0]) { - char *t = l; - - __tl = l; + as_bad (_("can't find opcode")); + return; + } - while (*t) - { - /* alpha/number underline dot for labels. */ - if (! ISALNUM (*t) && *t != '_' && *t != '.') - { - as_bad (_("unknown operand %s"), l); - return 1; - } - t++; - } + opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd); - op->mode = OP_EXP; - op->reg = 0; /* PC relative... be careful. */ - op->am = 1; - op->ol = 1; - __tl = l; - parse_exp (__tl, &(op->exp)); - return 0; + if (opcode == NULL) + { + as_bad (_("unknown opcode `%s'"), cmd); + return; } - while (0); - /* Unreachable. */ - as_bad (_("unknown addressing mode for operand %s"), l); - return 1; -} + { + char *__t = input_line_pointer; + msp430_operands (opcode, str); + input_line_pointer = __t; + } +} /* GAS will call this function for each section at the end of the assembly, to permit the CPU backend to adjust the alignment of a section. */ valueT -md_section_align (seg, addr) - asection *seg; - valueT addr; +md_section_align (asection * seg, valueT addr) { - int align = bfd_get_section_alignment (stdoutput, seg); + int align = bfd_section_alignment (seg); - return ((addr + (1 << align) - 1) & (-1 << align)); + return ((addr + (1 << align) - 1) & -(1 << align)); } /* If you define this macro, it should return the offset between the @@ -1349,9 +4376,7 @@ md_section_align (seg, addr) macro would return the length of an instruction. */ long -md_pcrel_from_section (fixp, sec) - fixS *fixp; - segT sec; +md_pcrel_from_section (fixS * fixp, segT sec) { if (fixp->fx_addsy != (symbolS *) NULL && (!S_IS_DEFINED (fixp->fx_addsy) @@ -1361,16 +4386,30 @@ md_pcrel_from_section (fixp, sec) return fixp->fx_frag->fr_address + fixp->fx_where; } +/* Addition to the standard TC_FORCE_RELOCATION_LOCAL. + Now it handles the situation when relocations + have to be passed to linker. */ +int +msp430_force_relocation_local (fixS *fixp) +{ + if (fixp->fx_r_type == BFD_RELOC_MSP430_10_PCREL) + return 1; + if (fixp->fx_pcrel) + return 1; + if (msp430_enable_polys + && !msp430_enable_relax) + return 1; + + return 0; +} + + /* GAS will call this for each fixup. It should store the correct value in the object file. */ - void -md_apply_fix3 (fixp, valuep, seg) - fixS *fixp; - valueT *valuep; - segT seg; +md_apply_fix (fixS * fixp, valueT * valuep, segT seg) { - unsigned char *where; + unsigned char * where; unsigned long insn; long value; @@ -1385,7 +4424,19 @@ md_apply_fix3 (fixp, valuep, seg) if (fixp->fx_addsy && (s == seg || s == absolute_section)) { - value = S_GET_VALUE (fixp->fx_addsy) + *valuep; + /* FIXME: We can appear here only in case if we perform a pc + relative jump to the label which is i) global, ii) locally + defined or this is a jump to an absolute symbol. + If this is an absolute symbol -- everything is OK. + If this is a global label, we've got a symbol value defined + twice: + 1. S_GET_VALUE (fixp->fx_addsy) will contain a symbol offset + from this section start + 2. *valuep will contain the real offset from jump insn to the + label + So, the result of S_GET_VALUE (fixp->fx_addsy) + (* valuep); + will be incorrect. Therefore remove s_get_value. */ + value = /* S_GET_VALUE (fixp->fx_addsy) + */ * valuep; fixp->fx_done = 1; } else @@ -1402,30 +4453,28 @@ md_apply_fix3 (fixp, valuep, seg) value -= S_GET_VALUE (fixp->fx_subsy); fixp->fx_done = 1; } - else - { - /* We don't actually support subtracting a symbol. */ - as_bad_where (fixp->fx_file, fixp->fx_line, - _("expression too complex")); - } } } - switch (fixp->fx_r_type) + fixp->fx_no_overflow = 1; + + /* If polymorphs are enabled and relax disabled. + do not kill any relocs and pass them to linker. */ + if (msp430_enable_polys + && !msp430_enable_relax) { - default: - fixp->fx_no_overflow = 1; - break; - case BFD_RELOC_MSP430_10_PCREL: - break; + if (!fixp->fx_addsy + || S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) + fixp->fx_done = 1; /* It is ok to kill 'abs' reloc. */ + else + fixp->fx_done = 0; } if (fixp->fx_done) { /* Fetch the instruction, insert the fully resolved operand value, and stuff the instruction back again. */ - - where = fixp->fx_frag->fr_literal + fixp->fx_where; + where = (unsigned char *) fixp->fx_frag->fr_literal + fixp->fx_where; insn = bfd_getl16 (where); @@ -1448,26 +4497,31 @@ md_apply_fix3 (fixp, valuep, seg) bfd_putl16 ((bfd_vma) (value | insn), where); break; + case BFD_RELOC_MSP430X_PCR16: + case BFD_RELOC_MSP430_RL_PCREL: case BFD_RELOC_MSP430_16_PCREL: if (value & 1) as_bad_where (fixp->fx_file, fixp->fx_line, _("odd address operand: %ld"), value); + /* Fall through. */ + case BFD_RELOC_MSP430_16_PCREL_BYTE: /* Nothing to be corrected here. */ if (value < -32768 || value > 65536) as_bad_where (fixp->fx_file, fixp->fx_line, _("operand out of range: %ld"), value); + /* Fall through. */ + case BFD_RELOC_MSP430X_ABS16: + case BFD_RELOC_MSP430_16: + case BFD_RELOC_16: + case BFD_RELOC_MSP430_16_BYTE: value &= 0xffff; /* Get rid of extended sign. */ bfd_putl16 ((bfd_vma) value, where); break; - case BFD_RELOC_MSP430_16_PCREL_BYTE: - /* Nothing to be corrected here. */ - if (value < -32768 || value > 65536) - as_bad_where (fixp->fx_file, fixp->fx_line, - _("operand out of range: %ld"), value); - + case BFD_RELOC_MSP430_ABS_HI16: + value >>= 16; value &= 0xffff; /* Get rid of extended sign. */ bfd_putl16 ((bfd_vma) value, where); break; @@ -1476,11 +4530,53 @@ md_apply_fix3 (fixp, valuep, seg) bfd_putl16 ((bfd_vma) value, where); break; - case BFD_RELOC_MSP430_16: - case BFD_RELOC_16: - case BFD_RELOC_MSP430_16_BYTE: - value &= 0xffff; - bfd_putl16 ((bfd_vma) value, where); + case BFD_RELOC_MSP430_ABS8: + case BFD_RELOC_8: + bfd_put_8 (NULL, (bfd_vma) value, where); + break; + + case BFD_RELOC_MSP430X_ABS20_EXT_SRC: + case BFD_RELOC_MSP430X_PCR20_EXT_SRC: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); + value >>= 16; + bfd_putl16 ((bfd_vma) (((value & 0xf) << 7) | insn), where); + break; + + case BFD_RELOC_MSP430X_ABS20_ADR_SRC: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); + value >>= 16; + bfd_putl16 ((bfd_vma) (((value & 0xf) << 8) | insn), where); + break; + + case BFD_RELOC_MSP430X_ABS20_EXT_ODST: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); + value >>= 16; + bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); + break; + + case BFD_RELOC_MSP430X_PCR20_CALL: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); + value >>= 16; + bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); + break; + + case BFD_RELOC_MSP430X_ABS20_EXT_DST: + case BFD_RELOC_MSP430X_PCR20_EXT_DST: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); + value >>= 16; + bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); + break; + + case BFD_RELOC_MSP430X_PCR20_EXT_ODST: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); + value >>= 16; + bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); + break; + + case BFD_RELOC_MSP430X_ABS20_ADR_DST: + bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); + value >>= 16; + bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); break; default: @@ -1493,70 +4589,522 @@ md_apply_fix3 (fixp, valuep, seg) { fixp->fx_addnumber = value; } - return; } -/* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS - will pass the resulting reloc to `bfd_install_relocation'. This - currently works poorly, as `bfd_install_relocation' often does the - wrong thing, and instances of `tc_gen_reloc' have been written to - work around the problems, which in turns makes it difficult to fix - `bfd_install_relocation'. */ +static bfd_boolean +S_IS_GAS_LOCAL (symbolS * s) +{ + const char * name; + unsigned int len; + + if (s == NULL) + return FALSE; + name = S_GET_NAME (s); + len = strlen (name) - 1; + + return name[len] == 1 || name[len] == 2; +} + +/* GAS will call this to generate a reloc, passing the resulting reloc + to `bfd_install_relocation'. This currently works poorly, as + `bfd_install_relocation' often does the wrong thing, and instances of + `tc_gen_reloc' have been written to work around the problems, which + in turns makes it difficult to fix `bfd_install_relocation'. */ /* If while processing a fixup, a reloc really needs to be created then it is done here. */ -arelent * -tc_gen_reloc (seg, fixp) - asection *seg ATTRIBUTE_UNUSED; - fixS *fixp; +arelent ** +tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp) { + static arelent * no_relocs = NULL; + static arelent * relocs[MAX_RELOC_EXPANSION + 1]; arelent *reloc; - reloc = (arelent *) xmalloc (sizeof (arelent)); - - reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - + reloc = XNEW (arelent); reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); + if (reloc->howto == (reloc_howto_type *) NULL) { as_bad_where (fixp->fx_file, fixp->fx_line, _("reloc %d not supported by object file format"), (int) fixp->fx_r_type); - return NULL; + free (reloc); + return & no_relocs; + } + + relocs[0] = reloc; + relocs[1] = NULL; + + if (fixp->fx_subsy + && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) + { + fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); + fixp->fx_subsy = NULL; + } + + if (fixp->fx_addsy && fixp->fx_subsy) + { + asection *asec, *ssec; + + asec = S_GET_SEGMENT (fixp->fx_addsy); + ssec = S_GET_SEGMENT (fixp->fx_subsy); + + /* If we have a difference between two different, non-absolute symbols + we must generate two relocs (one for each symbol) and allow the + linker to resolve them - relaxation may change the distances between + symbols, even local symbols defined in the same section. + + Unfortunately we cannot do this with assembler generated local labels + because there can be multiple incarnations of the same label, with + exactly the same name, in any given section and the linker will have + no way to identify the correct one. Instead we just have to hope + that no relaxation will occur between the local label and the other + symbol in the expression. + + Similarly we have to compute differences between symbols in the .eh_frame + section as the linker is not smart enough to apply relocations there + before attempting to process it. */ + if ((ssec != absolute_section || asec != absolute_section) + && (fixp->fx_addsy != fixp->fx_subsy) + && strcmp (ssec->name, ".eh_frame") != 0 + && ! S_IS_GAS_LOCAL (fixp->fx_addsy) + && ! S_IS_GAS_LOCAL (fixp->fx_subsy)) + { + arelent * reloc2 = XNEW (arelent); + + relocs[0] = reloc2; + relocs[1] = reloc; + + reloc2->address = reloc->address; + reloc2->howto = bfd_reloc_type_lookup (stdoutput, + BFD_RELOC_MSP430_SYM_DIFF); + reloc2->addend = - S_GET_VALUE (fixp->fx_subsy); + + if (ssec == absolute_section) + reloc2->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; + else + { + reloc2->sym_ptr_ptr = XNEW (asymbol *); + *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); + } + + reloc->addend = fixp->fx_offset; + if (asec == absolute_section) + { + reloc->addend += S_GET_VALUE (fixp->fx_addsy); + reloc->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; + } + else + { + reloc->sym_ptr_ptr = XNEW (asymbol *); + *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); + } + + fixp->fx_pcrel = 0; + fixp->fx_done = 1; + return relocs; + } + else + { + char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; + + reloc->addend = (S_GET_VALUE (fixp->fx_addsy) + - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); + + switch (fixp->fx_r_type) + { + case BFD_RELOC_8: + md_number_to_chars (fixpos, reloc->addend, 1); + break; + + case BFD_RELOC_16: + md_number_to_chars (fixpos, reloc->addend, 2); + break; + + case BFD_RELOC_24: + md_number_to_chars (fixpos, reloc->addend, 3); + break; + + case BFD_RELOC_32: + md_number_to_chars (fixpos, reloc->addend, 4); + break; + + default: + reloc->sym_ptr_ptr + = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr; + return relocs; + } + + free (reloc); + return & no_relocs; + } } + else + { +#if 0 + if (fixp->fx_r_type == BFD_RELOC_MSP430X_ABS16 + && S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) + { + bfd_vma amount = S_GET_VALUE (fixp->fx_addsy); + char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; - if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT - || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) - reloc->address = fixp->fx_offset; + md_number_to_chars (fixpos, amount, 2); + free (reloc); + return & no_relocs; + } +#endif + reloc->sym_ptr_ptr = XNEW (asymbol *); + *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); + reloc->addend = fixp->fx_offset; - reloc->addend = fixp->fx_offset; + if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT + || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) + reloc->address = fixp->fx_offset; + } - return reloc; + return relocs; } -/* Parse ordinary expression. */ +int +md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, + asection * segment_type ATTRIBUTE_UNUSED) +{ + if (fragP->fr_symbol && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) + { + /* This is a jump -> pcrel mode. Nothing to do much here. + Return value == 2. */ + fragP->fr_subtype = + ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_BITS10); + } + else if (fragP->fr_symbol) + { + /* It's got a segment, but it's not ours. Even if fr_symbol is in + an absolute segment, we don't know a displacement until we link + object files. So it will always be long. This also applies to + labels in a subsegment of current. Liker may relax it to short + jump later. Return value == 8. */ + fragP->fr_subtype = + ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_WORD); + } + else + { + /* We know the abs value. may be it is a jump to fixed address. + Impossible in our case, cause all constants already handled. */ + fragP->fr_subtype = + ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF); + } -static char * -parse_exp (s, op) - char *s; - expressionS *op; + return md_relax_table[fragP->fr_subtype].rlx_length; +} + +void +md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, + asection * sec ATTRIBUTE_UNUSED, + fragS * fragP) { - input_line_pointer = s; - expression (op); - if (op->X_op == O_absent) - as_bad (_("missing operand")); - return input_line_pointer; + char * where = 0; + int rela = -1; + int i; + struct rcodes_s * cc = NULL; + struct hcodes_s * hc = NULL; + + switch (fragP->fr_subtype) + { + case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_BITS10): + case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_BITS10): + case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_BITS10): + /* We do not have to convert anything here. + Just apply a fix. */ + rela = BFD_RELOC_MSP430_10_PCREL; + break; + + case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_WORD): + case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_UNDEF): + /* Convert uncond branch jmp lab -> br lab. */ + if (target_is_430x ()) + cc = msp430x_rcodes + 7; + else + cc = msp430_rcodes + 7; + where = fragP->fr_literal + fragP->fr_fix; + bfd_putl16 (cc->lop0, where); + rela = BFD_RELOC_MSP430_RL_PCREL; + fragP->fr_fix += 2; + break; + + case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_WORD): + case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_UNDEF): + { + /* Other simple branches. */ + int insn = bfd_getl16 (fragP->fr_opcode); + + insn &= 0xffff; + /* Find actual instruction. */ + if (target_is_430x ()) + { + for (i = 0; i < 7 && !cc; i++) + if (msp430x_rcodes[i].sop == insn) + cc = msp430x_rcodes + i; + } + else + { + for (i = 0; i < 7 && !cc; i++) + if (msp430_rcodes[i].sop == insn) + cc = & msp430_rcodes[i]; + } + + if (!cc || !cc->name) + as_fatal (_("internal inconsistency problem in %s: insn %04lx"), + __FUNCTION__, (long) insn); + where = fragP->fr_literal + fragP->fr_fix; + bfd_putl16 (cc->lop0, where); + bfd_putl16 (cc->lop1, where + 2); + rela = BFD_RELOC_MSP430_RL_PCREL; + fragP->fr_fix += 4; + } + break; + + case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_WORD): + case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_UNDEF): + if (target_is_430x ()) + cc = msp430x_rcodes + 6; + else + cc = msp430_rcodes + 6; + where = fragP->fr_literal + fragP->fr_fix; + bfd_putl16 (cc->lop0, where); + bfd_putl16 (cc->lop1, where + 2); + bfd_putl16 (cc->lop2, where + 4); + rela = BFD_RELOC_MSP430_RL_PCREL; + fragP->fr_fix += 6; + break; + + case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10): + { + int insn = bfd_getl16 (fragP->fr_opcode + 2); + + insn &= 0xffff; + if (target_is_430x ()) + { + for (i = 0; i < 4 && !hc; i++) + if (msp430x_hcodes[i].op1 == insn) + hc = msp430x_hcodes + i; + } + else + { + for (i = 0; i < 4 && !hc; i++) + if (msp430_hcodes[i].op1 == insn) + hc = &msp430_hcodes[i]; + } + if (!hc || !hc->name) + as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), + __FUNCTION__, (long) insn); + rela = BFD_RELOC_MSP430_10_PCREL; + /* Apply a fix for a first label if necessary. + another fix will be applied to the next word of insn anyway. */ + if (hc->tlab == 2) + fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, + fragP->fr_offset, TRUE, rela); + fragP->fr_fix += 2; + } + + break; + + case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_WORD): + case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_UNDEF): + { + int insn = bfd_getl16 (fragP->fr_opcode + 2); + + insn &= 0xffff; + if (target_is_430x ()) + { + for (i = 0; i < 4 && !hc; i++) + if (msp430x_hcodes[i].op1 == insn) + hc = msp430x_hcodes + i; + } + else + { + for (i = 0; i < 4 && !hc; i++) + if (msp430_hcodes[i].op1 == insn) + hc = & msp430_hcodes[i]; + } + if (!hc || !hc->name) + as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), + __FUNCTION__, (long) insn); + rela = BFD_RELOC_MSP430_RL_PCREL; + where = fragP->fr_literal + fragP->fr_fix; + bfd_putl16 (hc->lop0, where); + bfd_putl16 (hc->lop1, where + 2); + bfd_putl16 (hc->lop2, where + 4); + fragP->fr_fix += 6; + } + break; + + default: + as_fatal (_("internal inconsistency problem in %s: %lx"), + __FUNCTION__, (long) fragP->fr_subtype); + break; + } + + /* Now apply fix. */ + fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, + fragP->fr_offset, TRUE, rela); + /* Just fixed 2 bytes. */ + fragP->fr_fix += 2; } +/* Relax fragment. Mostly stolen from hc11 and mcore + which arches I think I know. */ -int -md_estimate_size_before_relax (fragp, seg) - fragS *fragp ATTRIBUTE_UNUSED; - asection *seg ATTRIBUTE_UNUSED; +long +msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP, + long stretch ATTRIBUTE_UNUSED) { - abort (); - return 0; + long growth; + offsetT aim = 0; + symbolS *symbolP; + const relax_typeS *this_type; + const relax_typeS *start_type; + relax_substateT next_state; + relax_substateT this_state; + const relax_typeS *table = md_relax_table; + + /* Nothing to be done if the frag has already max size. */ + if (RELAX_STATE (fragP->fr_subtype) == STATE_UNDEF + || RELAX_STATE (fragP->fr_subtype) == STATE_WORD) + return 0; + + if (RELAX_STATE (fragP->fr_subtype) == STATE_BITS10) + { + symbolP = fragP->fr_symbol; + if (symbol_resolved_p (symbolP)) + as_fatal (_("internal inconsistency problem in %s: resolved symbol"), + __FUNCTION__); + /* We know the offset. calculate a distance. */ + aim = S_GET_VALUE (symbolP) - fragP->fr_address - fragP->fr_fix; + } + + if (!msp430_enable_relax) + { + /* Relaxation is not enabled. So, make all jump as long ones + by setting 'aim' to quite high value. */ + aim = 0x7fff; + } + + this_state = fragP->fr_subtype; + start_type = this_type = table + this_state; + + if (aim < 0) + { + /* Look backwards. */ + for (next_state = this_type->rlx_more; next_state;) + if (aim >= this_type->rlx_backward || !this_type->rlx_backward) + next_state = 0; + else + { + /* Grow to next state. */ + this_state = next_state; + this_type = table + this_state; + next_state = this_type->rlx_more; + } + } + else + { + /* Look forwards. */ + for (next_state = this_type->rlx_more; next_state;) + if (aim <= this_type->rlx_forward || !this_type->rlx_forward) + next_state = 0; + else + { + /* Grow to next state. */ + this_state = next_state; + this_type = table + this_state; + next_state = this_type->rlx_more; + } + } + + growth = this_type->rlx_length - start_type->rlx_length; + if (growth != 0) + fragP->fr_subtype = this_state; + return growth; +} + +/* Return FALSE if the fixup in fixp should be left alone and not + adjusted. We return FALSE here so that linker relaxation will + work. */ + +bfd_boolean +msp430_fix_adjustable (struct fix *fixp ATTRIBUTE_UNUSED) +{ + /* If the symbol is in a non-code section then it should be OK. */ + if (fixp->fx_addsy + && ((S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE) == 0)) + return TRUE; + + return FALSE; +} + +/* Set the contents of the .MSP430.attributes and .GNU.attributes sections. */ + +void +msp430_md_end (void) +{ + if (check_for_nop) + { + if (gen_interrupt_nops) + { + gen_nop (); + if (warn_interrupt_nops) + as_warn (INSERT_NOP_AT_EOF); + } + else if (warn_interrupt_nops) + as_warn (_(WARN_NOP_AT_EOF)); + } + + /* We have already emitted an error if any of the following attributes + disagree with the attributes in the input assembly file. See + msp430_object_attribute. */ + bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_ISA, + target_is_430x () ? OFBA_MSPABI_Val_ISA_MSP430X + : OFBA_MSPABI_Val_ISA_MSP430); + + bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Code_Model, + large_model ? OFBA_MSPABI_Val_Code_Model_LARGE + : OFBA_MSPABI_Val_Code_Model_SMALL); + + bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Data_Model, + large_model ? OFBA_MSPABI_Val_Code_Model_LARGE + : OFBA_MSPABI_Val_Code_Model_SMALL); + + /* The data region GNU attribute is ignored for the small memory model. */ + if (large_model) + bfd_elf_add_obj_attr_int (stdoutput, OBJ_ATTR_GNU, + Tag_GNU_MSP430_Data_Region, lower_data_region_only + ? Val_GNU_MSP430_Data_Region_Lower + : Val_GNU_MSP430_Data_Region_Any); +} + +/* Returns FALSE if there is a msp430 specific reason why the + subtraction of two same-section symbols cannot be computed by + the assembler. */ + +bfd_boolean +msp430_allow_local_subtract (expressionS * left, + expressionS * right, + segT section) +{ + /* If the symbols are not in a code section then they are OK. */ + if ((section->flags & SEC_CODE) == 0) + return TRUE; + + if (S_IS_GAS_LOCAL (left->X_add_symbol) || S_IS_GAS_LOCAL (right->X_add_symbol)) + return TRUE; + + if (left->X_add_symbol == right->X_add_symbol) + return TRUE; + + /* We have to assume that there may be instructions between the + two symbols and that relaxation may increase the distance between + them. */ + return FALSE; }