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-rw-r--r--binutils-2.17/gas/config/tc-msp430.c2338
1 files changed, 0 insertions, 2338 deletions
diff --git a/binutils-2.17/gas/config/tc-msp430.c b/binutils-2.17/gas/config/tc-msp430.c
deleted file mode 100644
index 6978b85a..00000000
--- a/binutils-2.17/gas/config/tc-msp430.c
+++ /dev/null
@@ -1,2338 +0,0 @@
-/* tc-msp430.c -- Assembler code for the Texas Instruments MSP430
-
- Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
- Contributed by Dmitry Diky <diwil@mail.ru>
-
- 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)
- any later version.
-
- GAS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 51 Franklin Street - Fifth Floor,
- Boston, MA 02110-1301, USA. */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <limits.h>
-
-#define PUSH_1X_WORKAROUND
-#include "as.h"
-#include "subsegs.h"
-#include "opcode/msp430.h"
-#include "safe-ctype.h"
-#include "dwarf2dbg.h"
-
-/*
- We will disable polymorphs by default because it is dangerous.
- The potencial 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' wiys thin +-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 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_RLC(n,i,sop,o1) \
- {#n, i, sop, 2, (o1 + 2), 0x4010, 0}
-
-static struct rcodes_s msp430_rcodes[] =
-{
- 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
-
-
-/* More difficult than above and they have format 5.
-
- 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 hcodes_s
-{
- 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;
-};
-
-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}
-};
-
-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;
-
-/* 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[] =
-{
- /* 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}
-};
-
-
-#define MAX_OP_LEN 256
-
-struct mcu_type_s
-{
- char * name;
- int isa;
- int mach;
-};
-
-#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_21 21
-#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[] =
-{
- {"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},
- {"msp430x1610", MSP430_ISA_16, bfd_mach_msp16},
- {"msp430x1611", MSP430_ISA_16, bfd_mach_msp16},
- {"msp430x1612", MSP430_ISA_16, bfd_mach_msp16},
-
- {"msp430x2101", MSP430_ISA_21, bfd_mach_msp21},
- {"msp430x2111", MSP430_ISA_21, bfd_mach_msp21},
- {"msp430x2121", MSP430_ISA_21, bfd_mach_msp21},
- {"msp430x2131", MSP430_ISA_21, bfd_mach_msp21},
-
- {"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},
- {"msp430x415", MSP430_ISA_41, bfd_mach_msp41},
- {"msp430x417", 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},
-
- {"msp430xG437", MSP430_ISA_43, bfd_mach_msp43},
- {"msp430xG438", MSP430_ISA_43, bfd_mach_msp43},
- {"msp430xG439", MSP430_ISA_43, bfd_mach_msp43},
-
- {"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}
-};
-
-
-static struct mcu_type_s default_mcu =
- { "msp430x11", MSP430_ISA_11, bfd_mach_msp11 };
-
-static struct mcu_type_s * msp430_mcu = & default_mcu;
-
-/* 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 farme 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 n = 0;
- unsigned int x;
-
- x = y;
-
- if (!x)
- return 1;
-
- for (; x; x = x >> 1)
- if (x & 1)
- n++;
-
- return n == 1;
-}
-
-/* Parse ordinary expression. */
-
-static char *
-parse_exp (char * s, expressionS * op)
-{
- input_line_pointer = s;
- expression (op);
- if (op->X_op == O_absent)
- as_bad (_("missing operand"));
- return input_line_pointer;
-}
-
-
-/* Delete spaces from s: X ( r 1 2) => X(r12). */
-
-static void
-del_spaces (char * s)
-{
- while (*s)
- {
- if (ISSPACE (*s))
- {
- char *m = s + 1;
-
- while (ISSPACE (*m) && *m)
- m++;
- memmove (s, m, strlen (m) + 1);
- }
- else
- s++;
- }
-}
-
-static inline char *
-skip_space (char * s)
-{
- while (ISSPACE (*s))
- ++s;
- return s;
-}
-
-/* Extract one word from FROM and copy it to TO. Delimeters are ",;\n" */
-
-static char *
-extract_operand (char * from, char * to, int limit)
-{
- int size = 0;
-
- /* Drop leading whitespace. */
- from = skip_space (from);
-
- while (size < limit && *from)
- {
- *(to + size) = *from;
- if (*from == ',' || *from == ';' || *from == '\n')
- break;
- from++;
- size++;
- }
-
- *(to + size) = 0;
- del_spaces (to);
-
- from++;
-
- return from;
-}
-
-static void
-msp430_profiler (int dummy ATTRIBUTE_UNUSED)
-{
- 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')
- {
- if (*s == ',')
- ops++;
- s++;
- }
-
- left = 3 - ops;
-
- if (ops < 1)
- {
- as_bad (_(".profiler pseudo requires at least two operands."));
- input_line_pointer = end;
- return;
- }
-
- input_line_pointer = extract_operand (input_line_pointer, flags, 32);
-
- while (*flags)
- {
- 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++;
- }
-
- 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 (_("ambigious flags combination - '.profiler' directive ignored."));
- input_line_pointer = end;
- return;
- }
-
- /* Generate temp symbol which denotes current location. */
- if (now_seg == absolute_section) /* Paranoja ? */
- {
- exp1.X_op = O_constant;
- exp1.X_add_number = abs_section_offset;
- as_warn (_("profiling in absolute section? Hm..."));
- }
- else
- {
- exp1.X_op = O_symbol;
- exp1.X_add_symbol = symbol_temp_new_now ();
- exp1.X_add_number = 0;
- }
-
- /* Generate a symbol which holds flags value. */
- exp.X_op = O_constant;
- exp.X_add_number = p_flags;
-
- /* Save current section. */
- seg = now_seg;
- subseg = now_subseg;
-
- /* Now go to .profiler section. */
- obj_elf_change_section (".profiler", SHT_PROGBITS, 0, 0, 0, 0, 0);
-
- /* Save flags. */
- emit_expr (& exp, 2);
-
- /* Save label value. */
- emit_expr (& exp1, 2);
-
- while (ops--)
- {
- /* Now get profiling info. */
- halt = extract_operand (input_line_pointer, str, 1024);
- /* Process like ".word xxx" directive. */
- parse_exp (str, & exp);
- emit_expr (& exp, 2);
- input_line_pointer = halt;
- }
-
- /* Fill the rest with zeros. */
- exp.X_op = O_constant;
- exp.X_add_number = 0;
- while (left--)
- emit_expr (& exp, 2);
-
- /* Return to current section. */
- subseg_set (seg, subseg);
-}
-
-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;
-
- /* 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;
- }
-
- to[size] = 0;
- return op_end;
-}
-
-#define OPTION_MMCU 'm'
-#define OPTION_RELAX 'Q'
-#define OPTION_POLYMORPHS 'P'
-
-static void
-msp430_set_arch (int dummy ATTRIBUTE_UNUSED)
-{
- char *str = (char *) alloca (32); /* 32 for good measure. */
-
- input_line_pointer = extract_word (input_line_pointer, str, 32);
-
- md_parse_option (OPTION_MMCU, str);
- bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach);
-}
-
-static void
-show_mcu_list (FILE * stream)
-{
- int i;
-
- fprintf (stream, _("Known MCU names:\n"));
-
- for (i = 0; mcu_types[i].name; i++)
- fprintf (stream, _("\t %s\n"), mcu_types[i].name);
-
- fprintf (stream, "\n");
-}
-
-int
-md_parse_option (int c, char * arg)
-{
- int i;
-
- switch (c)
- {
- case OPTION_MMCU:
- for (i = 0; mcu_types[i].name; ++i)
- if (strcmp (mcu_types[i].name, arg) == 0)
- break;
-
- if (!mcu_types[i].name)
- {
- show_mcu_list (stderr);
- as_fatal (_("unknown MCU: %s\n"), arg);
- }
-
- 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;
- break;
-
- case OPTION_RELAX:
- msp430_enable_relax = 1;
- return 1;
- break;
-
- case OPTION_POLYMORPHS:
- msp430_enable_polys = 1;
- return 1;
- break;
- }
-
- return 0;
-}
-
-
-const pseudo_typeS md_pseudo_table[] =
-{
- {"arch", msp430_set_arch, 0},
- {"profiler", msp430_profiler, 0},
- {NULL, NULL, 0}
-};
-
-const char *md_shortopts = "m:";
-
-struct option md_longopts[] =
-{
- {"mmcu", required_argument, NULL, OPTION_MMCU},
- {"mP", no_argument, NULL, OPTION_POLYMORPHS},
- {"mQ", no_argument, NULL, OPTION_RELAX},
- {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=[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"
- " msp430x1610 msp430x1611 msp430x1612\n"
- " msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n"
- " msp430x323 msp430x325\n"
- " msp430x336 msp430x337\n"
- " msp430x412 msp430x413 msp430x415 msp430x417\n"
- " msp430xE423 msp430xE425 msp430E427\n"
- " msp430xW423 msp430xW425 msp430W427\n"
- " msp430xG437 msp430xG438 msp430G439\n"
- " msp430x435 msp430x436 msp430x437\n"
- " msp430x447 msp430x448 msp430x449\n"));
- fprintf (stream,
- _(" -mQ - enable relaxation at assembly time. DANGEROUS!\n"
- " -mP - enable polymorph instructions\n"));
-
- show_mcu_list (stream);
-}
-
-symbolS *
-md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-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;
-}
-
-/* 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. */
-
-char *
-md_atof (int type, char * litP, int * sizeP)
-{
- int prec;
- LITTLENUM_TYPE words[4];
- LITTLENUM_TYPE *wordP;
- char *t;
-
- switch (type)
- {
- case 'f':
- prec = 2;
- break;
- case 'd':
- prec = 4;
- break;
- default:
- *sizeP = 0;
- return _("bad call to md_atof");
- }
-
- t = atof_ieee (input_line_pointer, type, words);
- if (t)
- input_line_pointer = t;
-
- *sizeP = prec * sizeof (LITTLENUM_TYPE);
-
- /* This loop outputs the LITTLENUMs in REVERSE order. */
- for (wordP = words + prec - 1; prec--;)
- {
- md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
-
- return NULL;
-}
-
-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, msp430_mcu->mach);
-}
-
-static int
-check_reg (char * t)
-{
- /* If this is a reg numb, str 't' must be a number from 0 - 15. */
-
- if (strlen (t) > 2 && *(t + 2) != '+')
- return 1;
-
- while (*t)
- {
- if ((*t < '0' || *t > '9') && *t != '+')
- break;
- t++;
- }
-
- if (*t)
- return 1;
-
- return 0;
-}
-
-
-static int
-msp430_srcoperand (struct msp430_operand_s * op,
- char * l, int bin, int * imm_op)
-{
- 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 = 1;
-
- 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;
-
- parse_exp (__tl, &(op->exp));
- 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;
- }
- 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;
- }
-
- 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. */
-
- x = (short) x; /* Extend sign. */
-
- 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)
- {
-#ifdef PUSH_1X_WORKAROUND
- if (bin == 0x1200)
- {
- /* Remove warning as confusing.
- as_warn(_("Hardware push bug workaround")); */
- }
- else
-#endif
- {
- op->reg = 2;
- op->am = 2;
- op->ol = 0;
- op->mode = OP_REG;
- }
- }
- else if (x == 8)
- {
-#ifdef PUSH_1X_WORKAROUND
- if (bin == 0x1200)
- {
- /* Remove warning as confusing.
- as_warn(_("Hardware push bug workaround")); */
- }
- else
-#endif
- {
- op->reg = 2;
- op->am = 3;
- op->ol = 0;
- op->mode = OP_REG;
- }
- }
- }
- else if (op->exp.X_op == O_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;
- }
- else
- {
- as_bad (_
- ("unknown expression in operand %s. use #llo() #lhi() #hlo() #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;
- }
- }
- /* Redudant (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;
- parse_exp (__tl, &(op->exp));
- op->mode = OP_EXP;
- if (op->exp.X_op == O_constant)
- {
- int x = op->exp.X_add_number;
-
- if (x > 65535 || x < -32768)
- {
- as_bad (_("value out of range: %d"), x);
- return 1;
- }
- }
- else if (op->exp.X_op == O_symbol)
- ;
- else
- {
- /* Redudant (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 (*t != 'r' && *t != 'R')
- {
- as_bad (_("unknown addressing mode %s"), l);
- return 1;
- }
-
- t++; /* Points to the reg value. */
-
- if (check_reg (t))
- {
- as_bad (_("Bad register name r%s"), t);
- return 1;
- }
-
- 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)
- {
- as_bad (_("MSP430 does not have %d registers"), op->reg);
- return 1;
- }
-
- return 0;
- }
-
- /* Check if register indexed X(Rn). */
- do
- {
- char *h = strrchr (l, '(');
- char *m = strrchr (l, ')');
- char *t;
-
- *imm_op = 1;
-
- if (!h)
- break;
- if (!m)
- {
- as_bad (_("')' required"));
- return 1;
- }
-
- t = h;
- op->am = 1;
- op->ol = 1;
- /* Extract a register. */
- t++; /* Advance pointer. */
-
- if (*t != 'r' && *t != 'R')
- {
- as_bad (_
- ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"),
- l);
- return 1;
- }
- t++;
-
- op->reg = *t - '0';
- if (op->reg > 9 || op->reg < 0)
- {
- as_bad (_("unknown operator (r%s substituded as a register name"),
- t);
- return 1;
- }
- t++;
- if (*t != ')')
- {
- op->reg = op->reg * 10;
- op->reg += *t - '0';
-
- if (op->reg > 15)
- {
- as_bad (_("unknown operator %s"), l);
- return 1;
- }
- if (op->reg == 2)
- {
- as_bad (_("r2 should not be used in indexed addressing mode"));
- return 1;
- }
-
- if (*(t + 1) != ')')
- {
- as_bad (_("unknown operator %s"), l);
- return 1;
- }
- }
-
- /* Extract constant. */
- __tl = l;
- *h = 0;
- op->mode = OP_EXP;
- parse_exp (__tl, &(op->exp));
- if (op->exp.X_op == O_constant)
- {
- int x = op->exp.X_add_number;
-
- if (x > 65535 || x < -32768)
- {
- as_bad (_("value out of range: %d"), x);
- return 1;
- }
-
- if (x == 0)
- {
- op->mode = OP_REG;
- op->am = 2;
- op->ol = 0;
- return 0;
- }
- }
- else if (op->exp.X_op == O_symbol)
- ;
- else
- {
- /* Redudant (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);
-
- /* Register mode 'mov r1,r2'. */
- do
- {
- char *t = l;
-
- /* Operand should be a register. */
- if (*t == 'r' || *t == 'R')
- {
- int x = atoi (t + 1);
-
- if (check_reg (t + 1))
- break;
-
- if (x < 0 || x > 15)
- break; /* Symbolic mode. */
-
- op->mode = OP_REG;
- op->am = 0;
- op->ol = 0;
- op->reg = x;
- return 0;
- }
- }
- while (0);
-
- /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */
- do
- {
- 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;
- }
- while (0);
-
- /* Unreachable. */
- as_bad (_("unknown addressing mode for operand %s"), l);
- return 1;
-}
-
-
-static int
-msp430_dstoperand (struct msp430_operand_s * op, char * l, int bin)
-{
- int dummy;
- int ret = msp430_srcoperand (op, l, bin, & dummy);
-
- if (ret)
- return ret;
-
- if (op->am == 2)
- {
- char *__tl = "0";
-
- 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;
- }
-
- if (op->am > 1)
- {
- as_bad (_
- ("this addressing mode is not applicable for destination operand"));
- return 1;
- }
- return 0;
-}
-
-
-/* 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 __is = 0;
- 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;
-
- /* Opcode is the one from opcodes table
- line contains something like
- [.w] @r2+, 5(R1)
- or
- .b @r2+, 5(R1). */
-
- /* Check if byte or word operation. */
- if (*line == '.' && TOLOWER (*(line + 1)) == 'b')
- {
- bin |= BYTE_OPERATION;
- byte_op = 1;
- }
- else
- byte_op = 0;
-
- /* skip .[bwBW]. */
- while (! ISSPACE (*line) && *line)
- line++;
-
- if (opcode->insn_opnumb && (!*line || *line == '\n'))
- {
- as_bad (_("instruction %s requires %d operand(s)"),
- 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 = 0;
-
- switch (opcode->fmt)
- {
- case 0: /* Emulated. */
- switch (opcode->insn_opnumb)
- {
- case 0:
- /* Set/clear bits instructions. */
- __is = 2;
- frag = frag_more (__is);
- bfd_putl16 ((bfd_vma) bin, frag);
- dwarf2_emit_insn (__is);
- 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;
-
- bin |= (op1.reg | (op1.am << 7));
- __is = 1 + op1.ol;
- frag = frag_more (2 * __is);
- where = frag - frag_now->fr_literal;
- bfd_putl16 ((bfd_vma) bin, frag);
- dwarf2_emit_insn (2 * __is);
-
- 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);
- else
- fix_new_exp (frag_now, where, 2,
- &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
- }
- 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. */
-
- 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);
- dwarf2_emit_insn (2 * __is);
-
- 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 3:
- /* Branch instruction => mov dst, r0. */
- line = extract_operand (line, l1, sizeof (l1));
-
- res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
- if (res)
- break;
-
- byte_op = 0;
- imm_op = 0;
-
- bin |= ((op1.reg << 8) | (op1.am << 4));
- __is = 1 + op1.ol;
- frag = frag_more (2 * __is);
- where = frag - frag_now->fr_literal;
- bfd_putl16 ((bfd_vma) bin, frag);
- dwarf2_emit_insn (2 * __is);
-
- if (op1.mode == OP_EXP)
- {
- 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);
- else
- fix_new_exp (frag_now, where, 2,
- &(op1.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);
- dwarf2_emit_insn (2 * __is);
-
- 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 (2);
- 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);
- dwarf2_emit_insn (2 * __is);
-
- if (op1.mode == OP_EXP)
- {
- 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, 2,
- &(op1.exp), FALSE, CHECK_RELOC_MSP430);
- else
- fix_new_exp (frag_now, where + 2, 2,
- &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
- }
- break;
-
- 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 (*m == '$')
- m++;
-
- parse_exp (m, &exp);
- frag = frag_more (2); /* Instr size is 1 word. */
-
- /* 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 $n ; jump from PC in either direction. */
-
- if (exp.X_op == O_constant)
- {
- int x = exp.X_add_number;
-
- if (x & 1)
- {
- as_warn (_("Even number required. Rounded to %d"), x + 1);
- x++;
- }
-
- if ((*l1 == '$' && x > 0) || x < 0)
- x -= 2;
-
- x >>= 1;
-
- if (x > 512 || x < -511)
- {
- as_bad (_("Wrong displacement %d"), x << 1);
- break;
- }
-
- bin |= x & 0x3ff;
- bfd_putl16 ((bfd_vma) bin, frag);
- }
- else if (exp.X_op == O_symbol && *l1 != '$')
- {
- where = frag - frag_now->fr_literal;
- fix_new_exp (frag_now, where, 2,
- &exp, TRUE, BFD_RELOC_MSP430_10_PCREL);
-
- bfd_putl16 ((bfd_vma) bin, frag);
- }
- else if (*l1 == '$')
- {
- as_bad (_("instruction requires label sans '$'"));
- }
- else
- {
- as_bad (_
- ("instruction requires label or value in range -511:512"));
- }
- dwarf2_emit_insn (2 * __is);
- break;
- }
- else
- {
- as_bad (_("instruction requires label"));
- break;
- }
- break;
-
- case 4: /* Extended jumps. */
- if (!msp430_enable_polys)
- {
- as_bad(_("polymorphs are not enabled. Use -mP option to enable."));
- break;
- }
-
- line = extract_operand (line, l1, sizeof (l1));
- if (l1[0])
- {
- char *m = l1;
- expressionS exp;
-
- /* Ignore absolute addressing. make it PC relative anyway. */
- if (*m == '#' || *m == '$')
- m++;
-
- parse_exp (m, & exp);
- if (exp.X_op == O_symbol)
- {
- /* Relaxation required. */
- struct rcodes_s rc = msp430_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. */
- frag = frag_more (8);
- dwarf2_emit_insn (0);
- bfd_putl16 ((bfd_vma) rc.sop, frag);
- frag = frag_variant (rs_machine_dependent, 8, 2,
- ENCODE_RELAX (rc.lpos, STATE_BITS10), /* Wild guess. */
- exp.X_add_symbol,
- 0, /* Offset is zero if jump dist less than 1K. */
- (char *) frag);
- break;
- }
- }
-
- 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;
- }
- line = extract_operand (line, l1, sizeof (l1));
- if (l1[0])
- {
- char * m = l1;
- expressionS exp;
-
- /* Ignore absolute addressing. make it PC relative anyway. */
- if (*m == '#' || *m == '$')
- m++;
-
- parse_exp (m, & exp);
- if (exp.X_op == O_symbol)
- {
- /* Relaxation required. */
- struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb];
-
- 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;
- }
- }
-
- as_bad (_("instruction requires label"));
- break;
-
- default:
- as_bad (_("Ilegal instruction or not implmented opcode."));
- }
-
- input_line_pointer = line;
- return 0;
-}
-
-void
-md_assemble (char * str)
-{
- struct msp430_opcode_s * opcode;
- char cmd[32];
- unsigned int i = 0;
-
- str = skip_space (str); /* Skip leading spaces. */
- str = extract_cmd (str, cmd, sizeof (cmd));
-
- while (cmd[i] && i < sizeof (cmd))
- {
- char a = TOLOWER (cmd[i]);
- cmd[i] = a;
- i++;
- }
-
- if (!cmd[0])
- {
- as_bad (_("can't find opcode "));
- return;
- }
-
- opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd);
-
- if (opcode == NULL)
- {
- as_bad (_("unknown opcode `%s'"), cmd);
- return;
- }
-
- {
- 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 (asection * seg, valueT addr)
-{
- int align = bfd_get_section_alignment (stdoutput, seg);
-
- return ((addr + (1 << align) - 1) & (-1 << align));
-}
-
-/* If you define this macro, it should return the offset between the
- address of a PC relative fixup and the position from which the PC
- relative adjustment should be made. On many processors, the base
- of a PC relative instruction is the next instruction, so this
- macro would return the length of an instruction. */
-
-long
-md_pcrel_from_section (fixS * fixp, segT sec)
-{
- if (fixp->fx_addsy != (symbolS *) NULL
- && (!S_IS_DEFINED (fixp->fx_addsy)
- || (S_GET_SEGMENT (fixp->fx_addsy) != sec)))
- return 0;
-
- return fixp->fx_frag->fr_address + fixp->fx_where;
-}
-
-/* Replaces 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 (msp430_enable_polys
- && !msp430_enable_relax)
- return 1;
- else
- return (!fixp->fx_pcrel
- || fixp->fx_plt
- || generic_force_reloc(fixp));
-}
-
-
-/* GAS will call this for each fixup. It should store the correct
- value in the object file. */
-void
-md_apply_fix (fixS * fixp, valueT * valuep, segT seg)
-{
- unsigned char * where;
- unsigned long insn;
- long value;
-
- if (fixp->fx_addsy == (symbolS *) NULL)
- {
- value = *valuep;
- fixp->fx_done = 1;
- }
- else if (fixp->fx_pcrel)
- {
- segT s = S_GET_SEGMENT (fixp->fx_addsy);
-
- if (fixp->fx_addsy && (s == seg || s == absolute_section))
- {
- /* 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
- value = *valuep;
- }
- else
- {
- value = fixp->fx_offset;
-
- if (fixp->fx_subsy != (symbolS *) NULL)
- {
- if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
- {
- 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"));
- }
- }
- }
-
- 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)
- {
- if (!fixp->fx_addsy || (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 = (unsigned char *) fixp->fx_frag->fr_literal + fixp->fx_where;
-
- insn = bfd_getl16 (where);
-
- switch (fixp->fx_r_type)
- {
- case BFD_RELOC_MSP430_10_PCREL:
- if (value & 1)
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("odd address operand: %ld"), value);
-
- /* Jumps are in words. */
- value >>= 1;
- --value; /* Correct PC. */
-
- if (value < -512 || value > 511)
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("operand out of range: %ld"), value);
-
- value &= 0x3ff; /* get rid of extended sign */
- bfd_putl16 ((bfd_vma) (value | insn), where);
- break;
-
- 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);
-
- /* 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);
-
- 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);
-
- value &= 0xffff; /* Get rid of extended sign. */
- bfd_putl16 ((bfd_vma) value, where);
- break;
-
- case BFD_RELOC_32:
- 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);
- break;
-
- default:
- as_fatal (_("line %d: unknown relocation type: 0x%x"),
- fixp->fx_line, fixp->fx_r_type);
- break;
- }
- }
- else
- {
- fixp->fx_addnumber = value;
- }
-}
-
-/* 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 (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
-{
- arelent * reloc;
-
- reloc = xmalloc (sizeof (arelent));
-
- reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
- *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
-
- 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;
- }
-
- if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
- || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
- reloc->address = fixp->fx_offset;
-
- reloc->addend = fixp->fx_offset;
-
- return reloc;
-}
-
-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)
- {
- /* Its got a segment, but its not ours. Even if fr_symbol is in
- an absolute segment, we dont 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 handeled. */
- fragP->fr_subtype =
- ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF);
- }
-
- return md_relax_table[fragP->fr_subtype].rlx_length;
-}
-
-void
-md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
- asection * sec ATTRIBUTE_UNUSED,
- fragS * fragP)
-{
- 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. */
- 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. */
- 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):
- 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;
- 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;
- 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. */
-
-long
-msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP,
- long stretch ATTRIBUTE_UNUSED)
-{
- 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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 04:27:14 +0000