diff options
Diffstat (limited to 'gas/config/tc-h8500.c')
-rw-r--r-- | gas/config/tc-h8500.c | 1633 |
1 files changed, 0 insertions, 1633 deletions
diff --git a/gas/config/tc-h8500.c b/gas/config/tc-h8500.c deleted file mode 100644 index 9dec3e2e6a2..00000000000 --- a/gas/config/tc-h8500.c +++ /dev/null @@ -1,1633 +0,0 @@ -/* tc-h8500.c -- Assemble code for the Hitachi H8/500 - Copyright (C) 1993, 94, 95, 1998 Free Software Foundation. - - 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. */ - -/* - Written By Steve Chamberlain - sac@cygnus.com - */ - -#include <stdio.h> -#include "as.h" -#include "bfd.h" -#include "subsegs.h" -#define DEFINE_TABLE -#define ASSEMBLER_TABLE -#include "opcodes/h8500-opc.h" -#include <ctype.h> - -const char comment_chars[] = "!"; -const char line_separator_chars[] = ";"; -const char line_comment_chars[] = "!#"; - -/* This table describes all the machine specific pseudo-ops the assembler - has to support. The fields are: - pseudo-op name without dot - function to call to execute this pseudo-op - Integer arg to pass to the function - */ - -void cons (); - -const pseudo_typeS md_pseudo_table[] = -{ - {"int", cons, 2}, - {"data.b", cons, 1}, - {"data.w", cons, 2}, - {"data.l", cons, 4}, - {"form", listing_psize, 0}, - {"heading", listing_title, 0}, - {"import", s_ignore, 0}, - {"page", listing_eject, 0}, - {"program", s_ignore, 0}, - {0, 0, 0} -}; - -const int md_reloc_size; - -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"; - -#define C(a,b) ENCODE_RELAX(a,b) -#define ENCODE_RELAX(what,length) (((what) << 2) + (length)) - -#define GET_WHAT(x) ((x>>2)) - -#define BYTE_DISP 1 -#define WORD_DISP 2 -#define UNDEF_BYTE_DISP 0 -#define UNDEF_WORD_DISP 3 - -#define BRANCH 1 -#define SCB_F 2 -#define SCB_TST 3 -#define END 4 - -#define BYTE_F 127 -#define BYTE_B -126 -#define WORD_F 32767 -#define WORD_B 32768 - -relax_typeS md_relax_table[C (END, 0)]; - -static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ - -/* - This function is called once, at assembler startup time. This should - set up all the tables, etc that the MD part of the assembler needs - */ - -void -md_begin () -{ - h8500_opcode_info *opcode; - char prev_buffer[100]; - int idx = 0; - register relax_typeS *table; - - opcode_hash_control = hash_new (); - prev_buffer[0] = 0; - - /* Insert unique names into hash table */ - for (opcode = h8500_table; opcode->name; opcode++) - { - if (idx != opcode->idx) - { - hash_insert (opcode_hash_control, opcode->name, (char *) opcode); - idx++; - } - } - - /* Initialize the relax table. We use a local variable to avoid - warnings about modifying a supposedly const data structure. */ - table = (relax_typeS *) md_relax_table; - table[C (BRANCH, BYTE_DISP)].rlx_forward = BYTE_F; - table[C (BRANCH, BYTE_DISP)].rlx_backward = BYTE_B; - table[C (BRANCH, BYTE_DISP)].rlx_length = 2; - table[C (BRANCH, BYTE_DISP)].rlx_more = C (BRANCH, WORD_DISP); - - table[C (BRANCH, WORD_DISP)].rlx_forward = WORD_F; - table[C (BRANCH, WORD_DISP)].rlx_backward = WORD_B; - table[C (BRANCH, WORD_DISP)].rlx_length = 3; - table[C (BRANCH, WORD_DISP)].rlx_more = 0; - - table[C (SCB_F, BYTE_DISP)].rlx_forward = BYTE_F; - table[C (SCB_F, BYTE_DISP)].rlx_backward = BYTE_B; - table[C (SCB_F, BYTE_DISP)].rlx_length = 3; - table[C (SCB_F, BYTE_DISP)].rlx_more = C (SCB_F, WORD_DISP); - - table[C (SCB_F, WORD_DISP)].rlx_forward = WORD_F; - table[C (SCB_F, WORD_DISP)].rlx_backward = WORD_B; - table[C (SCB_F, WORD_DISP)].rlx_length = 8; - table[C (SCB_F, WORD_DISP)].rlx_more = 0; - - table[C (SCB_TST, BYTE_DISP)].rlx_forward = BYTE_F; - table[C (SCB_TST, BYTE_DISP)].rlx_backward = BYTE_B; - table[C (SCB_TST, BYTE_DISP)].rlx_length = 3; - table[C (SCB_TST, BYTE_DISP)].rlx_more = C (SCB_TST, WORD_DISP); - - table[C (SCB_TST, WORD_DISP)].rlx_forward = WORD_F; - table[C (SCB_TST, WORD_DISP)].rlx_backward = WORD_B; - table[C (SCB_TST, WORD_DISP)].rlx_length = 10; - table[C (SCB_TST, WORD_DISP)].rlx_more = 0; - -} - -static int rn; /* register number used by RN */ -static int rs; /* register number used by RS */ -static int rd; /* register number used by RD */ -static int crb; /* byte size cr */ -static int crw; /* word sized cr */ -static int cr; /* unknown size cr */ - -static expressionS displacement;/* displacement expression */ -static int displacement_size; /* and size if given */ - -static int immediate_inpage; -static expressionS immediate; /* immediate expression */ -static int immediate_size; /* and size if given */ - -static expressionS absolute; /* absolute expression */ -static int absolute_size; /* and size if given */ - -typedef struct -{ - int type; - int reg; - expressionS exp; - int page; -} - -h8500_operand_info; - -/* try and parse a reg name, returns number of chars consumed */ -static int -parse_reg (src, mode, reg) - char *src; - int *mode; - int *reg; -{ - char *end; - int len; - - /* Cribbed from get_symbol_end(). */ - if (!is_name_beginner (*src) || *src == '\001') - return 0; - end = src+1; - while (is_part_of_name (*end) || *end == '\001') - end++; - len = end - src; - - if (len == 2 && src[0] == 'r') - { - if (src[1] >= '0' && src[1] <= '7') - { - *mode = RN; - *reg = (src[1] - '0'); - return len; - } - } - if (len == 2 && src[0] == 's' && src[1] == 'p') - { - *mode = RN; - *reg = 7; - return len; - } - if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') - { - *mode = CRB; - *reg = 1; - return len; - } - if (len == 2 && src[0] == 's' && src[1] == 'r') - { - *mode = CRW; - *reg = 0; - return len; - } - if (len == 2 && src[0] == 'b' && src[1] == 'r') - { - *mode = CRB; - *reg = 3; - return len; - } - if (len == 2 && src[0] == 'e' && src[1] == 'p') - { - *mode = CRB; - *reg = 4; - return len; - } - if (len == 2 && src[0] == 'd' && src[1] == 'p') - { - *mode = CRB; - *reg = 5; - return len; - } - if (len == 2 && src[0] == 't' && src[1] == 'p') - { - *mode = CRB; - *reg = 7; - return len; - } - if (len == 2 && src[0] == 'f' && src[1] == 'p') - { - *mode = RN; - *reg = 6; - return len; - } - return 0; -} - -static -char * -parse_exp (s, op, page) - char *s; - expressionS *op; - int *page; -{ - char *save; - char *new; - - save = input_line_pointer; - - *page = 0; - if (s[0] == '%') - { - if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e') - { - s += 5; - *page = 'p'; - } - if (s[1] == 'h' && s[2] == 'i' && s[3] == '1' && s[4] == '6') - { - s += 5; - *page = 'h'; - } - else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f') - { - s += 4; - *page = 'o'; - } - } - - input_line_pointer = s; - - expression (op); - if (op->X_op == O_absent) - as_bad (_("missing operand")); - new = input_line_pointer; - input_line_pointer = save; - return new; -} - -typedef enum - { - exp_signed, exp_unsigned, exp_sandu - } sign_type; - - -static char * -skip_colonthing (sign, ptr, exp, def, size8, size16, size24) - sign_type sign; - char *ptr; - h8500_operand_info *exp; - int def; - int size8; - int size16; - int size24; -{ - ptr = parse_exp (ptr, &exp->exp, &exp->page); - if (*ptr == ':') - { - ptr++; - if (*ptr == '8') - { - ptr++; - exp->type = size8; - } - else if (ptr[0] == '1' & ptr[1] == '6') - { - ptr += 2; - exp->type = size16; - } - else if (ptr[0] == '2' & ptr[1] == '4') - { - if (!size24) - { - as_bad (_(":24 not valid for this opcode")); - } - ptr += 2; - exp->type = size24; - } - else - { - as_bad (_("expect :8,:16 or :24")); - exp->type = size16; - } - } - else - { - if (exp->page == 'p') - { - exp->type = IMM8; - } - else if (exp->page == 'h') - { - exp->type = IMM16; - } - else - { - /* Let's work out the size from the context */ - int n = exp->exp.X_add_number; - if (size8 - && exp->exp.X_op == O_constant - && ((sign == exp_signed && (n >= -128 && n <= 127)) - || (sign == exp_unsigned && (n >= 0 && (n <= 255))) - || (sign == exp_sandu && (n >= -128 && (n <= 255))))) - { - exp->type = size8; - } - else - { - exp->type = def; - } - } - } - return ptr; -} - -static int -parse_reglist (src, op) - char *src; - h8500_operand_info *op; -{ - int mode; - int rn; - int mask = 0; - int rm; - int idx = 1; /* skip ( */ - - while (src[idx] && src[idx] != ')') - { - int done = parse_reg (src + idx, &mode, &rn); - - if (done) - { - idx += done; - mask |= 1 << rn; - } - else - { - as_bad (_("syntax error in reg list")); - return 0; - } - if (src[idx] == '-') - { - idx++; - done = parse_reg (src + idx, &mode, &rm); - if (done) - { - idx += done; - while (rn <= rm) - { - mask |= 1 << rn; - rn++; - } - } - else - { - as_bad (_("missing final register in range")); - } - } - if (src[idx] == ',') - idx++; - } - idx++; - op->exp.X_add_symbol = 0; - op->exp.X_op_symbol = 0; - op->exp.X_add_number = mask; - op->exp.X_op = O_constant; - op->exp.X_unsigned = 1; - op->type = IMM8; - return idx; - -} - -/* The many forms of operand: - - Rn Register direct - @Rn Register indirect - @(disp[:size], Rn) Register indirect with displacement - @Rn+ - @-Rn - @aa[:size] absolute - #xx[:size] immediate data - - */ - -static void -get_operand (ptr, op, ispage) - char **ptr; - h8500_operand_info *op; - char ispage; -{ - char *src = *ptr; - int mode; - unsigned int num; - unsigned int len; - op->page = 0; - if (src[0] == '(' && src[1] == 'r') - { - /* This is a register list */ - *ptr = src + parse_reglist (src, op); - return; - } - - len = parse_reg (src, &op->type, &op->reg); - - if (len) - { - *ptr = src + len; - return; - } - - if (*src == '@') - { - src++; - if (*src == '-') - { - src++; - len = parse_reg (src, &mode, &num); - if (len == 0) - { - /* Oops, not a reg after all, must be ordinary exp */ - src--; - /* must be a symbol */ - *ptr = skip_colonthing (exp_unsigned, src, - op, ABS16, ABS8, ABS16, ABS24); - return; - } - - op->type = RNDEC; - op->reg = num; - *ptr = src + len; - return; - } - if (*src == '(') - { - /* Disp */ - src++; - - src = skip_colonthing (exp_signed, src, - op, RNIND_D16, RNIND_D8, RNIND_D16, 0); - - if (*src != ',') - { - as_bad (_("expected @(exp, Rn)")); - return; - } - src++; - len = parse_reg (src, &mode, &op->reg); - if (len == 0 || mode != RN) - { - as_bad (_("expected @(exp, Rn)")); - return; - } - src += len; - if (*src != ')') - { - as_bad (_("expected @(exp, Rn)")); - return; - } - *ptr = src + 1; - return; - } - len = parse_reg (src, &mode, &num); - - if (len) - { - src += len; - if (*src == '+') - { - src++; - if (mode != RN) - { - as_bad (_("@Rn+ needs word register")); - return; - } - op->type = RNINC; - op->reg = num; - *ptr = src; - return; - } - if (mode != RN) - { - as_bad (_("@Rn needs word register")); - return; - } - op->type = RNIND; - op->reg = num; - *ptr = src; - return; - } - else - { - /* must be a symbol */ - *ptr = - skip_colonthing (exp_unsigned, src, op, - ispage ? ABS24 : ABS16, ABS8, ABS16, ABS24); - return; - } - } - - if (*src == '#') - { - src++; - *ptr = skip_colonthing (exp_sandu, src, op, IMM16, IMM8, IMM16, ABS24); - return; - } - else - { - *ptr = skip_colonthing (exp_signed, src, op, - ispage ? ABS24 : PCREL8, PCREL8, PCREL16, ABS24); - } -} - -static -char * -get_operands (info, args, operand) - h8500_opcode_info *info; - char *args; - h8500_operand_info *operand; - -{ - char *ptr = args; - - switch (info->nargs) - { - case 0: - operand[0].type = 0; - operand[1].type = 0; - break; - - case 1: - ptr++; - get_operand (&ptr, operand + 0, info->name[0] == 'p'); - operand[1].type = 0; - break; - - case 2: - ptr++; - get_operand (&ptr, operand + 0, 0); - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 1, 0); - break; - - default: - abort (); - } - - return ptr; -} - -/* Passed a pointer to a list of opcodes which use different - addressing modes, return the opcode which matches the opcodes - provided - */ - -int pcrel8; /* Set when we've seen a pcrel operand */ - -static -h8500_opcode_info * -get_specific (opcode, operands) - h8500_opcode_info *opcode; - h8500_operand_info *operands; -{ - h8500_opcode_info *this_try = opcode; - int found = 0; - unsigned int noperands = opcode->nargs; - - unsigned int this_index = opcode->idx; - - while (this_index == opcode->idx && !found) - { - unsigned int i; - - this_try = opcode++; - - /* look at both operands needed by the opcodes and provided by - the user*/ - for (i = 0; i < noperands; i++) - { - h8500_operand_info *user = operands + i; - - switch (this_try->arg_type[i]) - { - case FPIND_D8: - /* Opcode needs (disp:8,fp) */ - if (user->type == RNIND_D8 && user->reg == 6) - { - displacement = user->exp; - continue; - } - break; - case RDIND_D16: - if (user->type == RNIND_D16) - { - displacement = user->exp; - rd = user->reg; - continue; - } - break; - case RDIND_D8: - if (user->type == RNIND_D8) - { - displacement = user->exp; - rd = user->reg; - continue; - } - break; - case RNIND_D16: - case RNIND_D8: - if (user->type == this_try->arg_type[i]) - { - displacement = user->exp; - rn = user->reg; - continue; - } - break; - - case SPDEC: - if (user->type == RNDEC && user->reg == 7) - { - continue; - } - break; - case SPINC: - if (user->type == RNINC && user->reg == 7) - { - continue; - } - break; - case ABS16: - if (user->type == ABS16) - { - absolute = user->exp; - continue; - } - break; - case ABS8: - if (user->type == ABS8) - { - absolute = user->exp; - continue; - } - break; - case ABS24: - if (user->type == ABS24) - { - absolute = user->exp; - continue; - } - break; - - case CRB: - if ((user->type == CRB || user->type == CR) && user->reg != 0) - { - crb = user->reg; - continue; - } - break; - case CRW: - if ((user->type == CRW || user->type == CR) && user->reg == 0) - { - crw = user->reg; - continue; - } - break; - case DISP16: - if (user->type == DISP16) - { - displacement = user->exp; - continue; - } - break; - case DISP8: - if (user->type == DISP8) - { - displacement = user->exp; - continue; - } - break; - case FP: - if (user->type == RN && user->reg == 6) - { - continue; - } - break; - case PCREL16: - if (user->type == PCREL16) - { - displacement = user->exp; - continue; - } - break; - case PCREL8: - if (user->type == PCREL8) - { - displacement = user->exp; - pcrel8 = 1; - continue; - } - break; - - case IMM16: - if (user->type == IMM16 - || user->type == IMM8) - { - immediate_inpage = user->page; - immediate = user->exp; - continue; - } - break; - case RLIST: - case IMM8: - if (user->type == IMM8) - { - immediate_inpage = user->page; - immediate = user->exp; - continue; - } - break; - case IMM4: - if (user->type == IMM8) - { - immediate_inpage = user->page; - immediate = user->exp; - continue; - } - break; - case QIM: - if (user->type == IMM8 - && user->exp.X_op == O_constant - && - (user->exp.X_add_number == -2 - || user->exp.X_add_number == -1 - || user->exp.X_add_number == 1 - || user->exp.X_add_number == 2)) - { - immediate_inpage = user->page; - immediate = user->exp; - continue; - } - break; - case RD: - if (user->type == RN) - { - rd = user->reg; - continue; - } - break; - case RS: - if (user->type == RN) - { - rs = user->reg; - continue; - } - break; - case RDIND: - if (user->type == RNIND) - { - rd = user->reg; - continue; - - } - break; - case RNINC: - case RNIND: - case RNDEC: - case RN: - - if (user->type == this_try->arg_type[i]) - { - rn = user->reg; - continue; - } - break; - case SP: - if (user->type == RN && user->reg == 7) - { - continue; - } - break; - default: - printf (_("unhandled %d\n"), this_try->arg_type[i]); - break; - } - - /* If we get here this didn't work out */ - goto fail; - } - found = 1; - fail:; - - } - - if (found) - return this_try; - else - return 0; -} - -int -check (operand, low, high) - expressionS *operand; - int low; - int high; -{ - if (operand->X_op != O_constant - || operand->X_add_number < low - || operand->X_add_number > high) - { - as_bad (_("operand must be absolute in range %d..%d"), low, high); - } - return operand->X_add_number; -} - -static -void -insert (output, index, exp, reloc, pcrel) - char *output; - int index; - expressionS *exp; - int reloc; - int pcrel; -{ - fix_new_exp (frag_now, - output - frag_now->fr_literal + index, - 4, /* always say size is 4, but we know better */ - exp, - pcrel, - reloc); -} - -void -build_relaxable_instruction (opcode, operand) - h8500_opcode_info *opcode; - h8500_operand_info *operand; -{ - /* All relaxable instructions start life as two bytes but can become - three bytes long if a lonely branch and up to 9 bytes if long scb - */ - char *p; - int len; - int type; - - if (opcode->bytes[0].contents == 0x01) - { - type = SCB_F; - } - else if (opcode->bytes[0].contents == 0x06 - || opcode->bytes[0].contents == 0x07) - { - type = SCB_TST; - } - else - { - type = BRANCH; - } - - p = frag_var (rs_machine_dependent, - md_relax_table[C (type, WORD_DISP)].rlx_length, - len = md_relax_table[C (type, BYTE_DISP)].rlx_length, - C (type, UNDEF_BYTE_DISP), - displacement.X_add_symbol, - displacement.X_add_number, - 0); - - p[0] = opcode->bytes[0].contents; - if (type != BRANCH) - { - p[1] = opcode->bytes[1].contents | rs; - } -} - -/* Now we know what sort of opcodes it is, lets build the bytes - - */ -static void -build_bytes (opcode, operand) - h8500_opcode_info *opcode; - h8500_operand_info *operand; - -{ - int index; - - if (pcrel8) - { - pcrel8 = 0; - build_relaxable_instruction (opcode, operand); - } - else - { - char *output = frag_more (opcode->length); - - memset (output, 0, opcode->length); - for (index = 0; index < opcode->length; index++) - { - output[index] = opcode->bytes[index].contents; - - switch (opcode->bytes[index].insert) - { - default: - printf (_("failed for %d\n"), opcode->bytes[index].insert); - break; - case 0: - break; - case RN: - output[index] |= rn; - break; - case RD: - case RDIND: - - output[index] |= rd; - break; - case RS: - output[index] |= rs; - break; - case DISP16: - insert (output, index, &displacement, R_H8500_IMM16, 0); - index++; - break; - case DISP8: - case FPIND_D8: - insert (output, index, &displacement, R_H8500_IMM8, 0); - break; - - case IMM16: - { - int p; - switch (immediate_inpage) { - case 'p': - p = R_H8500_HIGH16; - break; - case 'h': - p = R_H8500_HIGH16; - break; - default: - p = R_H8500_IMM16; - break; - } - - insert (output, index, &immediate,p, 0); - } - - index++; - break; - case RLIST: - case IMM8: - if (immediate_inpage) - { - insert (output, index, &immediate, R_H8500_HIGH8, 0); - } - else - { - insert (output, index, &immediate, R_H8500_IMM8, 0); - } - break; - case PCREL16: - insert (output, index, &displacement, R_H8500_PCREL16, 1); - index++; - break; - case PCREL8: - insert (output, index, &displacement, R_H8500_PCREL8, 1); - break; - case IMM4: - output[index] |= check (&immediate, 0, 15); - break; - case CR: - - output[index] |= cr; - if (cr == 0) - { - output[0] |= 0x8; - } - else - { - output[0] &= ~0x8; - } - - break; - - case CRB: - output[index] |= crb; - output[0] &= ~0x8; - break; - case CRW: - output[index] |= crw; - output[0] |= 0x8; - break; - case ABS24: - insert (output, index, &absolute, R_H8500_IMM24, 0); - index += 2; - break; - case ABS16: - insert (output, index, &absolute, R_H8500_IMM16, 0); - index++; - break; - case ABS8: - insert (output, index, &absolute, R_H8500_IMM8, 0); - break; - case QIM: - switch (immediate.X_add_number) - { - case -2: - output[index] |= 0x5; - break; - case -1: - output[index] |= 0x4; - break; - case 1: - output[index] |= 0; - break; - case 2: - output[index] |= 1; - break; - } - break; - } - } - } -} - -/* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This funciton is supposed to emit - the frags/bytes it assembles to. - */ - -void -DEFUN (md_assemble, (str), - char *str) -{ - char *op_start; - char *op_end; - h8500_operand_info operand[2]; - h8500_opcode_info *opcode; - h8500_opcode_info *prev_opcode; - char name[11]; - - int nlen = 0; - - /* Drop leading whitespace */ - while (*str == ' ') - str++; - - /* find the op code end */ - for (op_start = op_end = str; - *op_end && - !is_end_of_line[*op_end] && *op_end != ' '; - op_end++) - { - if ( /**op_end != '.' - && *op_end != ':' - && */ nlen < 10) - { - name[nlen++] = *op_end; - } - } - name[nlen] = 0; - - if (op_end == op_start) - { - as_bad (_("can't find opcode ")); - } - - opcode = (h8500_opcode_info *) hash_find (opcode_hash_control, name); - - if (opcode == NULL) - { - as_bad (_("unknown opcode")); - return; - } - - get_operands (opcode, op_end, operand); - prev_opcode = opcode; - - opcode = get_specific (opcode, operand); - - if (opcode == 0) - { - /* Couldn't find an opcode which matched the operands */ - char *where = frag_more (2); - - where[0] = 0x0; - where[1] = 0x0; - as_bad (_("invalid operands for opcode")); - return; - } - - build_bytes (opcode, operand); - -} - -void -DEFUN (tc_crawl_symbol_chain, (headers), - object_headers * headers) -{ - printf (_("call to tc_crawl_symbol_chain \n")); -} - -symbolS * -DEFUN (md_undefined_symbol, (name), - char *name) -{ - return 0; -} - -void -DEFUN (tc_headers_hook, (headers), - object_headers * headers) -{ - printf (_("call to tc_headers_hook \n")); -} - -/* Various routines to kill one day */ -/* Equal to MAX_PRECISION in atof-ieee.c */ -#define MAX_LITTLENUMS 6 - -/* 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 (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; -} - -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; -{ -} - -void -tc_aout_fix_to_chars () -{ - printf (_("call to tc_aout_fix_to_chars \n")); - abort (); -} - -static -void -wordify_scb (buffer, disp_size, inst_size) - char *buffer; - int *disp_size; - int *inst_size; -{ - int rn = buffer[1] & 0x7; - - switch (buffer[0]) - { - case 0x0e: /* BSR */ - case 0x20: - case 0x21: - case 0x22: - case 0x23: - case 0x24: - case 0x25: - case 0x26: - case 0x27: - case 0x28: - case 0x29: - case 0x2a: - case 0x2b: - case 0x2c: - case 0x2d: - case 0x2e: - case 0x2f: - buffer[0] |= 0x10; - buffer[1] = 0; - buffer[2] = 0; - *disp_size = 2; - *inst_size = 1; - return; - default: - abort (); - - case 0x01: - *inst_size = 6; - *disp_size = 2; - break; - case 0x06: - *inst_size = 8; - *disp_size = 2; - - *buffer++ = 0x26; /* bne + 8 */ - *buffer++ = 0x08; - break; - case 0x07: - *inst_size = 8; - *disp_size = 2; - *buffer++ = 0x27; /* bne + 8 */ - *buffer++ = 0x08; - break; - - } - *buffer++ = 0xa8 | rn; /* addq -1,rn */ - *buffer++ = 0x0c; - *buffer++ = 0x04; /* cmp #0xff:8, rn */ - *buffer++ = 0xff; - *buffer++ = 0x70 | rn; - *buffer++ = 0x36; /* bne ... */ - *buffer++ = 0; - *buffer++ = 0; -} - -/* -called after relaxing, change the frags so they know how big they are -*/ -void -md_convert_frag (headers, seg, fragP) - object_headers *headers; - segT seg; - fragS *fragP; -{ - int disp_size = 0; - int inst_size = 0; - char *buffer = fragP->fr_fix + fragP->fr_literal; - - switch (fragP->fr_subtype) - { - case C (BRANCH, BYTE_DISP): - disp_size = 1; - inst_size = 1; - break; - - case C (SCB_F, BYTE_DISP): - case C (SCB_TST, BYTE_DISP): - disp_size = 1; - inst_size = 2; - break; - - /* Branches to a known 16 bit displacement */ - - /* Turn on the 16bit bit */ - case C (BRANCH, WORD_DISP): - case C (SCB_F, WORD_DISP): - case C (SCB_TST, WORD_DISP): - wordify_scb (buffer, &disp_size, &inst_size); - break; - - case C (BRANCH, UNDEF_WORD_DISP): - case C (SCB_F, UNDEF_WORD_DISP): - case C (SCB_TST, UNDEF_WORD_DISP): - /* This tried to be relaxed, but didn't manage it, it now needs a - fix */ - wordify_scb (buffer, &disp_size, &inst_size); - - /* Make a reloc */ - fix_new (fragP, - fragP->fr_fix + inst_size, - 4, - fragP->fr_symbol, - fragP->fr_offset, - 0, - R_H8500_PCREL16); - - fragP->fr_fix += disp_size + inst_size; - fragP->fr_var = 0; - return; - break; - default: - abort (); - } - if (inst_size) - { - /* Get the address of the end of the instruction */ - int next_inst = fragP->fr_fix + fragP->fr_address + disp_size + inst_size; - int targ_addr = (S_GET_VALUE (fragP->fr_symbol) + - fragP->fr_offset); - int disp = targ_addr - next_inst; - - md_number_to_chars (buffer + inst_size, disp, disp_size); - fragP->fr_fix += disp_size + inst_size; - fragP->fr_var = 0; - } -} - -valueT -md_section_align (seg, size) - segT seg ; - valueT size; -{ - return ((size + (1 << section_alignment[(int) seg]) - 1) - & (-1 << section_alignment[(int) seg])); - -} - -void -md_apply_fix (fixP, val) - fixS *fixP; - long val; -{ - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - - if (fixP->fx_r_type == 0) - { - fixP->fx_r_type = fixP->fx_size == 4 ? R_H8500_IMM32 : R_H8500_IMM16; - } - - switch (fixP->fx_r_type) - { - - case R_H8500_IMM8: - case R_H8500_PCREL8: - *buf++ = val; - break; - case R_H8500_IMM16: - case R_H8500_LOW16: - case R_H8500_PCREL16: - *buf++ = (val >> 8); - *buf++ = val; - break; - case R_H8500_HIGH8: - *buf++ = val >> 16; - break; - case R_H8500_HIGH16: - *buf++ = val >> 24; - *buf++ = val >> 16; - break; - case R_H8500_IMM24: - *buf++ = (val >> 16); - *buf++ = (val >> 8); - *buf++ = val; - break; - case R_H8500_IMM32: - *buf++ = (val >> 24); - *buf++ = (val >> 16); - *buf++ = (val >> 8); - *buf++ = val; - break; - default: - abort (); - - } -} - -/* -called just before address relaxation, return the length -by which a fragment must grow to reach it's destination -*/ -int -md_estimate_size_before_relax (fragP, segment_type) - register fragS *fragP; - register segT segment_type; -{ - int what = GET_WHAT (fragP->fr_subtype); - - switch (fragP->fr_subtype) - { - default: - abort (); - case C (BRANCH, UNDEF_BYTE_DISP): - case C (SCB_F, UNDEF_BYTE_DISP): - case C (SCB_TST, UNDEF_BYTE_DISP): - /* used to be a branch to somewhere which was unknown */ - if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) - { - /* Got a symbol and it's defined in this segment, become byte - sized - maybe it will fix up */ - fragP->fr_subtype = C (what, BYTE_DISP); - fragP->fr_var = md_relax_table[C (what, BYTE_DISP)].rlx_length; - } - else - { - /* Its got a segment, but its not ours, so it will always be long */ - fragP->fr_subtype = C (what, UNDEF_WORD_DISP); - fragP->fr_var = md_relax_table[C (what, WORD_DISP)].rlx_length; - return md_relax_table[C (what, WORD_DISP)].rlx_length; - } - } - return fragP->fr_var; -} - -/* Put number into target byte order */ - -void -md_number_to_chars (ptr, use, nbytes) - char *ptr; - valueT use; - int nbytes; -{ - number_to_chars_bigendian (ptr, use, nbytes); -} - -long -md_pcrel_from (fixP) - fixS *fixP; -{ - return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; -} - -/*ARGSUSED*/ -void -tc_coff_symbol_emit_hook (ignore) - symbolS *ignore; -{ -} - -short -tc_coff_fix2rtype (fix_ptr) - fixS *fix_ptr; -{ - if (fix_ptr->fx_r_type == RELOC_32) - { - /* cons likes to create reloc32's whatever the size of the reloc.. - */ - switch (fix_ptr->fx_size) - { - case 2: - return R_H8500_IMM16; - break; - case 1: - return R_H8500_IMM8; - break; - default: - abort (); - } - } - return fix_ptr->fx_r_type; -} - -void -tc_reloc_mangle (fix_ptr, intr, base) - fixS *fix_ptr; - struct internal_reloc *intr; - bfd_vma base; - -{ - symbolS *symbol_ptr; - - symbol_ptr = fix_ptr->fx_addsy; - - /* If this relocation is attached to a symbol then it's ok - to output it */ - if (fix_ptr->fx_r_type == RELOC_32) - { - /* cons likes to create reloc32's whatever the size of the reloc.. - */ - switch (fix_ptr->fx_size) - { - case 2: - intr->r_type = R_IMM16; - break; - case 1: - intr->r_type = R_IMM8; - break; - default: - abort (); - } - } - else - { - intr->r_type = fix_ptr->fx_r_type; - } - - intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; - intr->r_offset = fix_ptr->fx_offset; - - /* Turn the segment of the symbol into an offset. */ - if (symbol_ptr) - { - symbolS *dot; - - dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot; - if (dot) - { - /* intr->r_offset -= - segment_info[S_GET_SEGMENT(symbol_ptr)].scnhdr.s_paddr;*/ - intr->r_offset += S_GET_VALUE (symbol_ptr); - intr->r_symndx = dot->sy_number; - } - else - { - intr->r_symndx = symbol_ptr->sy_number; - } - - } - else - { - intr->r_symndx = -1; - } - -} - - - -int -start_label (ptr) - char *ptr; -{ - /* Check for :s.w */ - if (isalpha (ptr[1]) && ptr[2] == '.') - return 0; - /* Check for :s */ - if (isalpha (ptr[1]) && !isalpha (ptr[2])) - return 0; - return 1; -} - - -int -tc_coff_sizemachdep (frag) - fragS *frag; -{ - return md_relax_table[frag->fr_subtype].rlx_length; -} - -/* end of tc-h8500.c */ - |