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Diffstat (limited to 'gas/config/tc-i860.c')
| -rw-r--r-- | gas/config/tc-i860.c | 1263 |
1 files changed, 0 insertions, 1263 deletions
diff --git a/gas/config/tc-i860.c b/gas/config/tc-i860.c deleted file mode 100644 index f2e2b192721..00000000000 --- a/gas/config/tc-i860.c +++ /dev/null @@ -1,1263 +0,0 @@ -/* tc-i860.c -- Assemble for the I860 - Copyright (C) 1989, 92, 93, 94, 95, 1998 Free Software Foundation, Inc. - - 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "as.h" - -#include "opcode/i860.h" - -void md_begin (); -void md_number_to_chars (); -void md_assemble (); -char *md_atof (); -void md_convert_frag (); -int md_estimate_size_before_relax (); -void md_number_to_imm (); -void md_number_to_disp (); -void md_number_to_field (); -void md_ri_to_chars (); -static void i860_ip (); -/* void emit_machine_reloc(); */ - -const int md_reloc_size = sizeof (struct relocation_info); - -/* void (*md_emit_relocations)() = emit_machine_reloc; */ - -/* handle of the OPCODE hash table */ -static struct hash_control *op_hash = NULL; - -static void s_dual (), s_enddual (); -static void s_atmp (); - -const pseudo_typeS - md_pseudo_table[] = -{ - {"dual", s_dual, 4}, - {"enddual", s_enddual, 4}, - {"atmp", s_atmp, 4}, - {NULL, 0, 0}, -}; - -/* This array holds the chars that always start a comment. If the - pre-processor is disabled, these aren't very useful */ -const char comment_chars[] = "!/"; /* JF removed '|' from comment_chars */ - -/* This array holds the chars that only start a comment at the beginning of - a line. If the line seems to have the form '# 123 filename' - .line and .file directives will appear in the pre-processed output */ -/* Note that input_file.c hand checks for '#' at the beginning of the - first line of the input file. This is because the compiler outputs - #NO_APP at the beginning of its output. */ -/* Also note that comments like this one will always work. */ -const char line_comment_chars[] = "#/"; - -const char line_separator_chars[] = ""; - -/* Chars that can be used to separate mant from exp in floating point nums */ -const char EXP_CHARS[] = "eE"; - -/* Chars that mean this number is a floating point constant */ -/* As in 0f12.456 */ -/* or 0d1.2345e12 */ -const char FLT_CHARS[] = "rRsSfFdDxXpP"; - -/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be - changed in read.c . Ideally it shouldn't have to know about it at all, - but nothing is ideal around here. - */ -int size_reloc_info = sizeof (struct relocation_info); - -static unsigned char octal[256]; -#define isoctal(c) octal[c] -static unsigned char toHex[256]; - -struct i860_it - { - char *error; - unsigned long opcode; - struct nlist *nlistp; - expressionS exp; - int pcrel; - enum expand_type expand; - enum highlow_type highlow; - enum reloc_type reloc; - } the_insn; - -#if __STDC__ == 1 - -static void print_insn (struct i860_it *insn); -static int getExpression (char *str); - -#else /* not __STDC__ */ - -static void print_insn (); -static int getExpression (); - -#endif /* not __STDC__ */ - -static char *expr_end; -static char last_expand; /* error if expansion after branch */ - -enum dual -{ - DUAL_OFF = 0, DUAL_ON, DUAL_DDOT, DUAL_ONDDOT, -}; -static enum dual dual_mode = DUAL_OFF; /* dual-instruction mode */ - -static void -s_dual () /* floating point instructions have dual set */ -{ - dual_mode = DUAL_ON; -} - -static void -s_enddual () /* floating point instructions have dual set */ -{ - dual_mode = DUAL_OFF; -} - -static int atmp = 31; /* temporary register for pseudo's */ - -static void -s_atmp () -{ - register int temp; - if (strncmp (input_line_pointer, "sp", 2) == 0) - { - input_line_pointer += 2; - atmp = 2; - } - else if (strncmp (input_line_pointer, "fp", 2) == 0) - { - input_line_pointer += 2; - atmp = 3; - } - else if (strncmp (input_line_pointer, "r", 1) == 0) - { - input_line_pointer += 1; - temp = get_absolute_expression (); - if (temp >= 0 && temp <= 31) - atmp = temp; - else - as_bad (_("Unknown temporary pseudo register")); - } - else - { - as_bad (_("Unknown temporary pseudo register")); - } - demand_empty_rest_of_line (); -} - -/* This function is called once, at assembler startup time. It should - set up all the tables, etc. that the MD part of the assembler will need. */ -void -md_begin () -{ - register char *retval = NULL; - int lose = 0; - register unsigned int i = 0; - - op_hash = hash_new (); - - while (i < NUMOPCODES) - { - const char *name = i860_opcodes[i].name; - retval = hash_insert (op_hash, name, &i860_opcodes[i]); - if (retval != NULL) - { - fprintf (stderr, _("internal error: can't hash `%s': %s\n"), - i860_opcodes[i].name, retval); - lose = 1; - } - do - { - if (i860_opcodes[i].match & i860_opcodes[i].lose) - { - fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"), - i860_opcodes[i].name, i860_opcodes[i].args); - lose = 1; - } - ++i; - } - while (i < NUMOPCODES - && !strcmp (i860_opcodes[i].name, name)); - } - - if (lose) - as_fatal (_("Broken assembler. No assembly attempted.")); - - for (i = '0'; i < '8'; ++i) - octal[i] = 1; - for (i = '0'; i <= '9'; ++i) - toHex[i] = i - '0'; - for (i = 'a'; i <= 'f'; ++i) - toHex[i] = i + 10 - 'a'; - for (i = 'A'; i <= 'F'; ++i) - toHex[i] = i + 10 - 'A'; -} - -void -md_assemble (str) - char *str; -{ - char *toP; - int rsd; - int no_opcodes = 1; - int i; - struct i860_it pseudo[3]; - - assert (str); - i860_ip (str); - - /* check for expandable flag to produce pseudo-instructions */ - if (the_insn.expand != 0 && the_insn.highlow == NO_SPEC) - { - for (i = 0; i < 3; i++) - pseudo[i] = the_insn; - - switch (the_insn.expand) - { - - case E_DELAY: - no_opcodes = 1; - break; - - case E_MOV: - if (the_insn.exp.X_add_symbol == NULL && - the_insn.exp.X_op_symbol == NULL && - (the_insn.exp.X_add_number < (1 << 15) && - the_insn.exp.X_add_number >= -(1 << 15))) - break; - /* or l%const,r0,ireg_dest */ - pseudo[0].opcode = (the_insn.opcode & 0x001f0000) | 0xe4000000; - pseudo[0].highlow = PAIR; - /* orh h%const,ireg_dest,ireg_dest */ - pseudo[1].opcode = (the_insn.opcode & 0x03ffffff) | 0xec000000 | - ((the_insn.opcode & 0x001f0000) << 5); - pseudo[1].highlow = HIGH; - no_opcodes = 2; - break; - - case E_ADDR: - if (the_insn.exp.X_add_symbol == NULL && - the_insn.exp.X_op_symbol == NULL) - break; - /* orh ha%addr_expr,r0,r31 */ - pseudo[0].opcode = 0xec000000 | (atmp << 16); - pseudo[0].highlow = HIGHADJ; - pseudo[0].reloc = LOW0; /* must overwrite */ - /* l%addr_expr(r31),ireg_dest */ - pseudo[1].opcode = (the_insn.opcode & ~0x003e0000) | (atmp << 21); - pseudo[1].highlow = PAIR; - no_opcodes = 2; - break; - - case E_U32: /* 2nd version emulates Intel as, not doc. */ - if (the_insn.exp.X_add_symbol == NULL && - the_insn.exp.X_op_symbol == NULL && - (the_insn.exp.X_add_number < (1 << 16) && - the_insn.exp.X_add_number >= 0)) - break; - /* $(opcode)h h%const,ireg_src2,ireg_dest - pseudo[0].opcode = (the_insn.opcode & 0xf3ffffff) | 0x0c000000; */ - /* $(opcode)h h%const,ireg_src2,r31 */ - pseudo[0].opcode = (the_insn.opcode & 0xf3e0ffff) | 0x0c000000 | - (atmp << 16); - pseudo[0].highlow = HIGH; - /* $(opcode) l%const,ireg_dest,ireg_dest - pseudo[1].opcode = (the_insn.opcode & 0xf01f0000) | 0x04000000 | - ((the_insn.opcode & 0x001f0000) << 5); */ - /* $(opcode) l%const,r31,ireg_dest */ - pseudo[1].opcode = (the_insn.opcode & 0xf01f0000) | 0x04000000 | - (atmp << 21); - pseudo[1].highlow = PAIR; - no_opcodes = 2; - break; - - case E_AND: /* 2nd version emulates Intel as, not doc. */ - if (the_insn.exp.X_add_symbol == NULL && - the_insn.exp.X_op_symbol == NULL && - (the_insn.exp.X_add_number < (1 << 16) && - the_insn.exp.X_add_number >= 0)) - break; - /* andnot h%const,ireg_src2,ireg_dest - pseudo[0].opcode = (the_insn.opcode & 0x03ffffff) | 0xd4000000; */ - /* andnot h%const,ireg_src2,r31 */ - pseudo[0].opcode = (the_insn.opcode & 0x03e0ffff) | 0xd4000000 | - (atmp << 16); - pseudo[0].highlow = HIGH; - pseudo[0].exp.X_add_number = -1 - the_insn.exp.X_add_number; - /* andnot l%const,ireg_dest,ireg_dest - pseudo[1].opcode = (the_insn.opcode & 0x001f0000) | 0xd4000000 | - ((the_insn.opcode & 0x001f0000) << 5); */ - /* andnot l%const,r31,ireg_dest */ - pseudo[1].opcode = (the_insn.opcode & 0x001f0000) | 0xd4000000 | - (atmp << 21); - pseudo[1].highlow = PAIR; - pseudo[1].exp.X_add_number = -1 - the_insn.exp.X_add_number; - no_opcodes = 2; - break; - - case E_S32: - if (the_insn.exp.X_add_symbol == NULL && - the_insn.exp.X_op_symbol == NULL && - (the_insn.exp.X_add_number < (1 << 15) && - the_insn.exp.X_add_number >= -(1 << 15))) - break; - /* orh h%const,r0,r31 */ - pseudo[0].opcode = 0xec000000 | (atmp << 16); - pseudo[0].highlow = HIGH; - /* or l%const,r31,r31 */ - pseudo[1].opcode = 0xe4000000 | (atmp << 21) | (atmp << 16); - pseudo[1].highlow = PAIR; - /* r31,ireg_src2,ireg_dest */ - pseudo[2].opcode = (the_insn.opcode & ~0x0400ffff) | (atmp << 11); - pseudo[2].reloc = NO_RELOC; - no_opcodes = 3; - break; - - default: - as_fatal (_("failed sanity check.")); - } - - the_insn = pseudo[0]; - /* check for expanded opcode after branch or in dual */ - if (no_opcodes > 1 && last_expand == 1) - as_warn (_("Expanded opcode after delayed branch: `%s'"), str); - if (no_opcodes > 1 && dual_mode != DUAL_OFF) - as_warn (_("Expanded opcode in dual mode: `%s'"), str); - } - - i = 0; - do - { /* always produce at least one opcode */ - toP = frag_more (4); - /* put out the opcode */ - md_number_to_chars (toP, the_insn.opcode, 4); - - /* check for expanded opcode after branch or in dual */ - last_expand = the_insn.pcrel; - - /* put out the symbol-dependent stuff */ - if (the_insn.reloc != NO_RELOC) - { - fix_new (frag_now, /* which frag */ - (toP - frag_now->fr_literal), /* where */ - 4, /* size */ - &the_insn.exp, - the_insn.pcrel, - /* merge bit fields into one argument */ - (int) (((the_insn.highlow & 0x3) << 4) | (the_insn.reloc & 0xf))); - } - the_insn = pseudo[++i]; - } - while (--no_opcodes > 0); - -} - -static void -i860_ip (str) - char *str; -{ - char *s; - const char *args; - char c; - unsigned long i; - struct i860_opcode *insn; - char *argsStart; - unsigned long opcode; - unsigned int mask; - int match = 0; - int comma = 0; - - - for (s = str; islower (*s) || *s == '.' || *s == '3'; ++s) - ; - switch (*s) - { - - case '\0': - break; - - case ',': - comma = 1; - - /*FALLTHROUGH*/ - - case ' ': - *s++ = '\0'; - break; - - default: - as_fatal (_("Unknown opcode: `%s'"), str); - } - - if (strncmp (str, "d.", 2) == 0) - { /* check for d. opcode prefix */ - if (dual_mode == DUAL_ON) - dual_mode = DUAL_ONDDOT; - else - dual_mode = DUAL_DDOT; - str += 2; - } - - if ((insn = (struct i860_opcode *) hash_find (op_hash, str)) == NULL) - { - if (dual_mode == DUAL_DDOT || dual_mode == DUAL_ONDDOT) - str -= 2; - as_bad (_("Unknown opcode: `%s'"), str); - return; - } - if (comma) - { - *--s = ','; - } - argsStart = s; - for (;;) - { - opcode = insn->match; - memset (&the_insn, '\0', sizeof (the_insn)); - the_insn.reloc = NO_RELOC; - - /* - * Build the opcode, checking as we go to make - * sure that the operands match - */ - for (args = insn->args;; ++args) - { - switch (*args) - { - - case '\0': /* end of args */ - if (*s == '\0') - { - match = 1; - } - break; - - case '+': - case '(': /* these must match exactly */ - case ')': - case ',': - case ' ': - if (*s++ == *args) - continue; - break; - - case '#': /* must be at least one digit */ - if (isdigit (*s++)) - { - while (isdigit (*s)) - { - ++s; - } - continue; - } - break; - - case '1': /* next operand must be a register */ - case '2': - case 'd': - switch (*s) - { - - case 'f': /* frame pointer */ - s++; - if (*s++ == 'p') - { - mask = 0x3; - break; - } - goto error; - - case 's': /* stack pointer */ - s++; - if (*s++ == 'p') - { - mask = 0x2; - break; - } - goto error; - - case 'r': /* any register */ - s++; - if (!isdigit (c = *s++)) - { - goto error; - } - if (isdigit (*s)) - { - if ((c = 10 * (c - '0') + (*s++ - '0')) >= 32) - { - goto error; - } - } - else - { - c -= '0'; - } - mask = c; - break; - - default: /* not this opcode */ - goto error; - } - /* - * Got the register, now figure out where - * it goes in the opcode. - */ - switch (*args) - { - - case '1': - opcode |= mask << 11; - continue; - - case '2': - opcode |= mask << 21; - continue; - - case 'd': - opcode |= mask << 16; - continue; - - } - break; - - case 'e': /* next operand is a floating point register */ - case 'f': - case 'g': - if (*s++ == 'f' && isdigit (*s)) - { - mask = *s++; - if (isdigit (*s)) - { - mask = 10 * (mask - '0') + (*s++ - '0'); - if (mask >= 32) - { - break; - } - } - else - { - mask -= '0'; - } - switch (*args) - { - - case 'e': - opcode |= mask << 11; - continue; - - case 'f': - opcode |= mask << 21; - continue; - - case 'g': - opcode |= mask << 16; - if (dual_mode != DUAL_OFF) - opcode |= (1 << 9); /* dual mode instruction */ - if (dual_mode == DUAL_DDOT) - dual_mode = DUAL_OFF; - if (dual_mode == DUAL_ONDDOT) - dual_mode = DUAL_ON; - if ((opcode & (1 << 10)) && (mask == ((opcode >> 11) & 0x1f))) - as_warn (_("Fsr1 equals fdest with Pipelining")); - continue; - } - } - break; - - case 'c': /* next operand must be a control register */ - if (strncmp (s, "fir", 3) == 0) - { - opcode |= 0x0 << 21; - s += 3; - continue; - } - if (strncmp (s, "psr", 3) == 0) - { - opcode |= 0x1 << 21; - s += 3; - continue; - } - if (strncmp (s, "dirbase", 7) == 0) - { - opcode |= 0x2 << 21; - s += 7; - continue; - } - if (strncmp (s, "db", 2) == 0) - { - opcode |= 0x3 << 21; - s += 2; - continue; - } - if (strncmp (s, "fsr", 3) == 0) - { - opcode |= 0x4 << 21; - s += 3; - continue; - } - if (strncmp (s, "epsr", 4) == 0) - { - opcode |= 0x5 << 21; - s += 4; - continue; - } - break; - - case '5': /* 5 bit immediate in src1 */ - memset (&the_insn, '\0', sizeof (the_insn)); - if (!getExpression (s)) - { - s = expr_end; - if (the_insn.exp.X_add_number & ~0x1f) - as_bad (_("5-bit immediate too large")); - opcode |= (the_insn.exp.X_add_number & 0x1f) << 11; - memset (&the_insn, '\0', sizeof (the_insn)); - the_insn.reloc = NO_RELOC; - continue; - } - break; - - case 'l': /* 26 bit immediate, relative branch */ - the_insn.reloc = BRADDR; - the_insn.pcrel = 1; - goto immediate; - - case 's': /* 16 bit immediate, split relative branch */ - /* upper 5 bits of offset in dest field */ - the_insn.pcrel = 1; - the_insn.reloc = SPLIT0; - goto immediate; - - case 'S': /* 16 bit immediate, split (st), aligned */ - if (opcode & (1 << 28)) - if (opcode & 0x1) - the_insn.reloc = SPLIT2; - else - the_insn.reloc = SPLIT1; - else - the_insn.reloc = SPLIT0; - goto immediate; - - case 'I': /* 16 bit immediate, aligned */ - if (opcode & (1 << 28)) - if (opcode & 0x1) - the_insn.reloc = LOW2; - else - the_insn.reloc = LOW1; - else - the_insn.reloc = LOW0; - goto immediate; - - case 'i': /* 16 bit immediate */ - the_insn.reloc = LOW0; - - /*FALLTHROUGH*/ - - immediate: - if (*s == ' ') - s++; - if (strncmp (s, "ha%", 3) == 0) - { - the_insn.highlow = HIGHADJ; - s += 3; - } - else if (strncmp (s, "h%", 2) == 0) - { - the_insn.highlow = HIGH; - s += 2; - } - else if (strncmp (s, "l%", 2) == 0) - { - the_insn.highlow = PAIR; - s += 2; - } - the_insn.expand = insn->expand; - - /* Note that if the getExpression() fails, we will still have - created U entries in the symbol table for the 'symbols' - in the input string. Try not to create U symbols for - registers, etc. */ - - if (!getExpression (s)) - { - s = expr_end; - continue; - } - break; - - default: - as_fatal (_("failed sanity check.")); - } - break; - } - error: - if (match == 0) - { - /* Args don't match. */ - if (&insn[1] - i860_opcodes < NUMOPCODES - && !strcmp (insn->name, insn[1].name)) - { - ++insn; - s = argsStart; - continue; - } - else - { - as_bad (_("Illegal operands")); - return; - } - } - break; - } - - the_insn.opcode = opcode; -} - -static int -getExpression (str) - char *str; -{ - char *save_in; - segT seg; - - save_in = input_line_pointer; - input_line_pointer = str; - seg = expression (&the_insn.exp); - if (seg != absolute_section - && seg != undefined_section - && ! SEG_NORMAL (seg)) - { - the_insn.error = _("bad segment"); - expr_end = input_line_pointer; - input_line_pointer = save_in; - return 1; - } - expr_end = input_line_pointer; - input_line_pointer = save_in; - return 0; -} - - -/* - This is identical to the md_atof in m68k.c. I think this is right, - but I'm not sure. - - 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. - */ - -/* Equal to MAX_PRECISION in atof-ieee.c */ -#define MAX_LITTLENUMS 6 - -char * -md_atof (type, litP, sizeP) - char type; - char *litP; - int *sizeP; -{ - int prec; - LITTLENUM_TYPE words[MAX_LITTLENUMS]; - LITTLENUM_TYPE *wordP; - char *t; - char *atof_ieee (); - - switch (type) - { - - case 'f': - case 'F': - case 's': - case 'S': - prec = 2; - break; - - case 'd': - case 'D': - case 'r': - case 'R': - prec = 4; - break; - - case 'x': - case 'X': - prec = 6; - break; - - case 'p': - case 'P': - prec = 6; - 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); - for (wordP = words; prec--;) - { - md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); - litP += sizeof (LITTLENUM_TYPE); - } - return 0; -} - -/* - * Write out big-endian. - */ -void -md_number_to_chars (buf, val, n) - char *buf; - valueT val; - int n; -{ - number_to_chars_bigendian (buf, val, n); -} - -void -md_number_to_imm (buf, val, n, fixP) - char *buf; - long val; - int n; - fixS *fixP; -{ - enum reloc_type reloc = fixP->fx_r_type & 0xf; - enum highlow_type highlow = (fixP->fx_r_type >> 4) & 0x3; - - assert (buf); - assert (n == 4); /* always on i860 */ - - switch (highlow) - { - - case HIGHADJ: /* adjusts the high-order 16-bits */ - if (val & (1 << 15)) - val += (1 << 16); - - /*FALLTHROUGH*/ - - case HIGH: /* selects the high-order 16-bits */ - val >>= 16; - break; - - case PAIR: /* selects the low-order 16-bits */ - val = val & 0xffff; - break; - - default: - break; - } - - switch (reloc) - { - - case BRADDR: /* br,call,bc,bc.t,bnc,bnc.t w/26-bit immediate */ - if (fixP->fx_pcrel != 1) - as_bad (_("26-bit branch w/o pc relative set: 0x%08x"), val); - val >>= 2; /* align pcrel offset, see manual */ - - if (val >= (1 << 25) || val < -(1 << 25)) /* check for overflow */ - as_bad (_("26-bit branch offset overflow: 0x%08x"), val); - buf[0] = (buf[0] & 0xfc) | ((val >> 24) & 0x3); - buf[1] = val >> 16; - buf[2] = val >> 8; - buf[3] = val; - break; - - case SPLIT2: /* 16 bit immediate, 4-byte aligned */ - if (val & 0x3) - as_bad (_("16-bit immediate 4-byte alignment error: 0x%08x"), val); - val &= ~0x3; /* 4-byte align value */ - /*FALLTHROUGH*/ - case SPLIT1: /* 16 bit immediate, 2-byte aligned */ - if (val & 0x1) - as_bad (_("16-bit immediate 2-byte alignment error: 0x%08x"), val); - val &= ~0x1; /* 2-byte align value */ - /*FALLTHROUGH*/ - case SPLIT0: /* st,bla,bte,btne w/16-bit immediate */ - if (fixP->fx_pcrel == 1) - val >>= 2; /* align pcrel offset, see manual */ - /* check for bounds */ - if (highlow != PAIR && (val >= (1 << 16) || val < -(1 << 15))) - as_bad (_("16-bit branch offset overflow: 0x%08x"), val); - buf[1] = (buf[1] & ~0x1f) | ((val >> 11) & 0x1f); - buf[2] = (buf[2] & ~0x7) | ((val >> 8) & 0x7); - buf[3] |= val; /* perserve bottom opcode bits */ - break; - - case LOW4: /* fld,pfld,pst,flush 16-byte aligned */ - if (val & 0xf) - as_bad (_("16-bit immediate 16-byte alignment error: 0x%08x"), val); - val &= ~0xf; /* 16-byte align value */ - /*FALLTHROUGH*/ - case LOW3: /* fld,pfld,pst,flush 8-byte aligned */ - if (val & 0x7) - as_bad (_("16-bit immediate 8-byte alignment error: 0x%08x"), val); - val &= ~0x7; /* 8-byte align value */ - /*FALLTHROUGH*/ - case LOW2: /* 16 bit immediate, 4-byte aligned */ - if (val & 0x3) - as_bad (_("16-bit immediate 4-byte alignment error: 0x%08x"), val); - val &= ~0x3; /* 4-byte align value */ - /*FALLTHROUGH*/ - case LOW1: /* 16 bit immediate, 2-byte aligned */ - if (val & 0x1) - as_bad (_("16-bit immediate 2-byte alignment error: 0x%08x"), val); - val &= ~0x1; /* 2-byte align value */ - /*FALLTHROUGH*/ - case LOW0: /* 16 bit immediate, byte aligned */ - /* check for bounds */ - if (highlow != PAIR && (val >= (1 << 16) || val < -(1 << 15))) - as_bad (_("16-bit immediate overflow: 0x%08x"), val); - buf[2] = val >> 8; - buf[3] |= val; /* perserve bottom opcode bits */ - break; - - case NO_RELOC: - default: - as_bad (_("bad relocation type: 0x%02x"), reloc); - break; - } -} - -/* should never be called for i860 */ -void -md_number_to_disp (buf, val, n) - char *buf; - long val; -{ - as_fatal (_("md_number_to_disp\n")); -} - -/* should never be called for i860 */ -void -md_number_to_field (buf, val, fix) - char *buf; - long val; - void *fix; -{ - as_fatal (_("i860_number_to_field\n")); -} - -/* the bit-field entries in the relocation_info struct plays hell - with the byte-order problems of cross-assembly. So as a hack, - I added this mach. dependent ri twiddler. Ugly, but it gets - you there. -KWK */ -/* on i860: first 4 bytes are normal unsigned long address, next three - bytes are index, most sig. byte first. Byte 7 is broken up with - bit 7 as pcrel, bit 6 as extern, and the lower six bits as - relocation type (highlow 5-4). Next 4 bytes are long addend. */ -/* Thanx and a tip of the hat to Michael Bloom, mb@ttidca.tti.com */ -void -md_ri_to_chars (ri_p, ri) - struct relocation_info *ri_p, ri; -{ -#if 0 - unsigned char the_bytes[sizeof (*ri_p)]; - - /* this is easy */ - md_number_to_chars (the_bytes, ri.r_address, sizeof (ri.r_address)); - /* now the fun stuff */ - the_bytes[4] = (ri.r_index >> 16) & 0x0ff; - the_bytes[5] = (ri.r_index >> 8) & 0x0ff; - the_bytes[6] = ri.r_index & 0x0ff; - the_bytes[7] = ((ri.r_extern << 7) & 0x80) | (0 & 0x60) | (ri.r_type & 0x1F); - /* Also easy */ - md_number_to_chars (&the_bytes[8], ri.r_addend, sizeof (ri.r_addend)); - /* now put it back where you found it, Junior... */ - memcpy ((char *) ri_p, the_bytes, sizeof (*ri_p)); -#endif -} - -/* should never be called for i860 */ -void -md_convert_frag (headers, seg, fragP) - object_headers *headers; - segT seg; - register fragS *fragP; -{ - as_fatal (_("i860_convert_frag\n")); -} - -/* should never be called for i860 */ -int -md_estimate_size_before_relax (fragP, segtype) - register fragS *fragP; - segT segtype; -{ - as_fatal (_("i860_estimate_size_before_relax\n")); -} - -/* for debugging only, must match enum reloc_type */ -static char *Reloc[] = -{ - "NO_RELOC", - "BRADDR", - "LOW0", - "LOW1", - "LOW2", - "LOW3", - "LOW4", - "SPLIT0", - "SPLIT1", - "SPLIT2", - "RELOC_32", -}; -static char *Highlow[] = -{ - "NO_SPEC", - "PAIR", - "HIGH", - "HIGHADJ", -}; -static void -print_insn (insn) - struct i860_it *insn; -{ - if (insn->error) - { - fprintf (stderr, "ERROR: %s\n"); - } - fprintf (stderr, "opcode=0x%08x\t", insn->opcode); - fprintf (stderr, "expand=0x%08x\t", insn->expand); - fprintf (stderr, "reloc = %s\t", Reloc[insn->reloc]); - fprintf (stderr, "highlow = %s\n", Highlow[insn->highlow]); - fprintf (stderr, "exp = {\n"); - fprintf (stderr, "\t\tX_add_symbol = %s\n", - insn->exp.X_add_symbol ? - (S_GET_NAME (insn->exp.X_add_symbol) ? - S_GET_NAME (insn->exp.X_add_symbol) : "???") : "0"); - fprintf (stderr, "\t\tX_op_symbol = %s\n", - insn->exp.X_op_symbol ? - (S_GET_NAME (insn->exp.X_op_symbol) ? - S_GET_NAME (insn->exp.X_op_symbol) : "???") : "0"); - fprintf (stderr, "\t\tX_add_number = %d\n", - insn->exp.X_add_number); - fprintf (stderr, "}\n"); -} - -CONST char *md_shortopts = ""; -struct option md_longopts[] = { - {NULL, no_argument, NULL, 0} -}; -size_t md_longopts_size = sizeof(md_longopts); - -int -md_parse_option (c, arg) - int c; - char *arg; -{ - return 0; -} - -void -md_show_usage (stream) - FILE *stream; -{ -} - -#ifdef comment -/* - * I860 relocations are completely different, so it needs - * this machine dependent routine to emit them. - */ -void -emit_machine_reloc (fixP, segment_address_in_file) - register fixS *fixP; - relax_addressT segment_address_in_file; -{ - struct reloc_info_i860 ri; - register symbolS *symbolP; - extern char *next_object_file_charP; - long add_number; - - memset ((char *) &ri, '\0', sizeof (ri)); - for (; fixP; fixP = fixP->fx_next) - { - - if (fixP->fx_r_type & ~0x3f) - { - as_fatal ("fixP->fx_r_type = %d\n", fixP->fx_r_type); - } - ri.r_pcrel = fixP->fx_pcrel; - ri.r_type = fixP->fx_r_type; - - if ((symbolP = fixP->fx_addsy) != NULL) - { - ri.r_address = fixP->fx_frag->fr_address + - fixP->fx_where - segment_address_in_file; - if (!S_IS_DEFINED (symbolP)) - { - ri.r_extern = 1; - ri.r_symbolnum = symbolP->sy_number; - } - else - { - ri.r_extern = 0; - ri.r_symbolnum = S_GET_TYPE (symbolP); - } - if (symbolP && symbolP->sy_frag) - { - ri.r_addend = symbolP->sy_frag->fr_address; - } - ri.r_type = fixP->fx_r_type; - if (fixP->fx_pcrel) - { - /* preserve actual offset vs. pc + 4 */ - ri.r_addend -= (ri.r_address + 4); - } - else - { - ri.r_addend = fixP->fx_addnumber; - } - - md_ri_to_chars ((char *) &ri, ri); - append (&next_object_file_charP, (char *) &ri, sizeof (ri)); - } - } -} - -#endif /* comment */ - -#ifdef OBJ_AOUT - -/* on i860: first 4 bytes are normal unsigned long address, next three - bytes are index, most sig. byte first. Byte 7 is broken up with - bit 7 as pcrel, bit 6 as extern, and the lower six bits as - relocation type (highlow 5-4). Next 4 bytes are long addend. */ - -void -tc_aout_fix_to_chars (where, fixP, segment_address_in_file) - char *where; - fixS *fixP; - relax_addressT segment_address_in_file; -{ - long r_index; - long r_extern; - long r_addend = 0; - long r_address; - - know (fixP->fx_addsy); - know (!(fixP->fx_r_type & ~0x3f)); - - if (!S_IS_DEFINED (fixP->fx_addsy)) - { - r_extern = 1; - r_index = fixP->fx_addsy->sy_number; - } - else - { - r_extern = 0; - r_index = S_GET_TYPE (fixP->fx_addsy); - } - - md_number_to_chars (where, - r_address = fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file, - 4); - - where[4] = (r_index >> 16) & 0x0ff; - where[5] = (r_index >> 8) & 0x0ff; - where[6] = r_index & 0x0ff; - where[7] = (((fixP->fx_pcrel << 7) & 0x80) - | ((r_extern << 6) & 0x40) - | (fixP->fx_r_type & 0x3F)); - - if (fixP->fx_addsy->sy_frag) - { - r_addend = fixP->fx_addsy->sy_frag->fr_address; - } - - if (fixP->fx_pcrel) - { - /* preserve actual offset vs. pc + 4 */ - r_addend -= (r_address + 4); - } - else - { - r_addend = fixP->fx_addnumber; - } - - md_number_to_chars (&where[8], r_addend, 4); -} - -#endif /* OBJ_AOUT */ - -/* We have no need to default values of symbols. */ - -/* ARGSUSED */ -symbolS * -md_undefined_symbol (name) - char *name; -{ - return 0; -} - -/* Round up a section size to the appropriate boundary. */ -valueT -md_section_align (segment, size) - segT segment; - valueT size; -{ - return size; /* Byte alignment is fine */ -} - -/* Exactly what point is a PC-relative offset relative TO? - On the i860, they're relative to the address of the offset, plus - its size. (??? Is this right? FIXME-SOON!) */ -long -md_pcrel_from (fixP) - fixS *fixP; -{ - return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; -} - -void -md_apply_fix (fixP, val) - fixS *fixP; - long val; -{ - char *place = fixP->fx_where + fixP->fx_frag->fr_literal; - - /* looks to me like i860 never has bit fixes. Let's see. xoxorich. */ - know (fixP->fx_bit_fixP == NULL); - if (!fixP->fx_bit_fixP) - { - fixP->fx_addnumber = val; - md_number_to_imm (place, val, fixP->fx_size, fixP); - } - else - { - md_number_to_field (place, val, fixP->fx_bit_fixP); - } -} - -/* - * Local Variables: - * fill-column: 131 - * comment-column: 0 - * End: - */ - -/* end of tc-i860.c */ |