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Diffstat (limited to 'gas/config/tc-z8k.c')
| -rw-r--r-- | gas/config/tc-z8k.c | 1566 |
1 files changed, 0 insertions, 1566 deletions
diff --git a/gas/config/tc-z8k.c b/gas/config/tc-z8k.c deleted file mode 100644 index f5b05a632f9..00000000000 --- a/gas/config/tc-z8k.c +++ /dev/null @@ -1,1566 +0,0 @@ -/* tc-z8k.c -- Assemble code for the Zilog Z800n - Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001 - 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. */ - -/* Written By Steve Chamberlain <sac@cygnus.com>. */ - -#define DEFINE_TABLE -#include <stdio.h> - -#include "as.h" -#include "bfd.h" -#include "safe-ctype.h" -#include "opcodes/z8k-opc.h" - -const char comment_chars[] = "!"; -const char line_comment_chars[] = "#"; -const char line_separator_chars[] = ";"; - -extern int machine; -extern int coff_flags; -int segmented_mode; -const int md_reloc_size; - -void cons (); - -void -s_segm () -{ - segmented_mode = 1; - machine = bfd_mach_z8001; - coff_flags = F_Z8001; -} - -void -s_unseg () -{ - segmented_mode = 0; - machine = bfd_mach_z8002; - coff_flags = F_Z8002; -} - -static void -even () -{ - frag_align (1, 0, 0); - record_alignment (now_seg, 1); -} - -void obj_coff_section (); - -int -tohex (c) - int c; -{ - if (ISDIGIT (c)) - return c - '0'; - if (ISLOWER (c)) - return c - 'a' + 10; - return c - 'A' + 10; -} - -void -sval () -{ - SKIP_WHITESPACE (); - if (*input_line_pointer == '\'') - { - int c; - input_line_pointer++; - c = *input_line_pointer++; - while (c != '\'') - { - if (c == '%') - { - c = (tohex (input_line_pointer[0]) << 4) - | tohex (input_line_pointer[1]); - input_line_pointer += 2; - } - FRAG_APPEND_1_CHAR (c); - c = *input_line_pointer++; - } - demand_empty_rest_of_line (); - } -} - -/* 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 - */ - -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}, - {"z8001" , s_segm , 0}, - {"z8002" , s_unseg , 0}, - - {"segm" , s_segm , 0}, - {"unsegm" , s_unseg , 0}, - {"unseg" , s_unseg , 0}, - {"name" , s_app_file , 0}, - {"global" , s_globl , 0}, - {"wval" , cons , 2}, - {"lval" , cons , 4}, - {"bval" , cons , 1}, - {"sval" , sval , 0}, - {"rsect" , obj_coff_section, 0}, - {"sect" , obj_coff_section, 0}, - {"block" , s_space , 0}, - {"even" , even , 0}, - {0 , 0 , 0} -}; - -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"; - -/* Opcode mnemonics. */ -static struct hash_control *opcode_hash_control; - -void -md_begin () -{ - opcode_entry_type *opcode; - char *prev_name = ""; - int idx = 0; - - opcode_hash_control = hash_new (); - - for (opcode = z8k_table; opcode->name; opcode++) - { - /* Only enter unique codes into the table. */ - if (strcmp (opcode->name, prev_name)) - { - hash_insert (opcode_hash_control, opcode->name, (char *) opcode); - idx++; - } - opcode->idx = idx; - prev_name = opcode->name; - } - - /* Default to z8002. */ - s_unseg (); - - /* Insert the pseudo ops, too. */ - for (idx = 0; md_pseudo_table[idx].poc_name; idx++) - { - opcode_entry_type *fake_opcode; - fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type)); - fake_opcode->name = md_pseudo_table[idx].poc_name; - fake_opcode->func = (void *) (md_pseudo_table + idx); - fake_opcode->opcode = 250; - hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); - } - - linkrelax = 1; -} - -struct z8k_exp { - char *e_beg; - char *e_end; - expressionS e_exp; -}; - -typedef struct z8k_op { - /* 'b','w','r','q'. */ - char regsize; - - /* 0 .. 15. */ - unsigned int reg; - - int mode; - - /* Any other register associated with the mode. */ - unsigned int x_reg; - - /* Any expression. */ - expressionS exp; -} op_type; - -static expressionS *da_operand; -static expressionS *imm_operand; - -int reg[16]; -int the_cc; -int the_ctrl; -int the_flags; -int the_interrupt; - -char * -whatreg (reg, src) - int *reg; - char *src; -{ - if (ISDIGIT (src[1])) - { - *reg = (src[0] - '0') * 10 + src[1] - '0'; - return src + 2; - } - else - { - *reg = (src[0] - '0'); - return src + 1; - } -} - -/* Parse operands - - rh0-rh7, rl0-rl7 - r0-r15 - rr0-rr14 - rq0--rq12 - WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp - r0l,r0h,..r7l,r7h - @WREG - @WREG+ - @-WREG - #const -*/ - -/* Try to parse a reg name. Return a pointer to the first character - in SRC after the reg name. */ - -char * -parse_reg (src, mode, reg) - char *src; - int *mode; - unsigned int *reg; -{ - char *res = 0; - char regno; - - if (src[0] == 's' && src[1] == 'p' && (src[2] == 0 || src[2] == ',')) - { - if (segmented_mode) - { - *mode = CLASS_REG_LONG; - *reg = 14; - } - else - { - *mode = CLASS_REG_WORD; - *reg = 15; - } - return src + 2; - } - if (src[0] == 'r') - { - if (src[1] == 'r') - { - if (src[2] < '0' || src[2] > '9') - return res; /* Assume no register name but a label starting with 'rr'. */ - *mode = CLASS_REG_LONG; - res = whatreg (reg, src + 2); - regno = *reg; - if (regno > 14) - as_warn (_("register rr%d, out of range."), regno); - } - else if (src[1] == 'h') - { - if (src[2] < '0' || src[2] > '9') - return res; /* Assume no register name but a label starting with 'rh'. */ - *mode = CLASS_REG_BYTE; - res = whatreg (reg, src + 2); - regno = *reg; - if (regno > 7) - as_warn (_("register rh%d, out of range."), regno); - } - else if (src[1] == 'l') - { - if (src[2] < '0' || src[2] > '9') - return res; /* Assume no register name but a label starting with 'rl'. */ - *mode = CLASS_REG_BYTE; - res = whatreg (reg, src + 2); - regno = *reg; - if (regno > 7) - as_warn (_("register rl%d, out of range."), regno); - *reg += 8; - } - else if (src[1] == 'q') - { - if (src[2] < '0' || src[2] > '9') - return res; /* Assume no register name but a label starting with 'rq'. */ - *mode = CLASS_REG_QUAD; - res = whatreg (reg, src + 2); - regno = *reg; - if (regno > 12) - as_warn (_("register rq%d, out of range."), regno); - } - else - { - if (src[1] < '0' || src[1] > '9') - return res; /* Assume no register name but a label starting with 'r'. */ - *mode = CLASS_REG_WORD; - res = whatreg (reg, src + 1); - regno = *reg; - if (regno > 15) - as_warn (_("register r%d, out of range."), regno); - } - } - return res; -} - -char * -parse_exp (s, op) - char *s; - expressionS *op; -{ - char *save = input_line_pointer; - char *new; - - 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; -} - -/* The many forms of operand: - - <rb> - <r> - <rr> - <rq> - @r - #exp - exp - exp(r) - r(#exp) - r(r) - */ - -static char * -checkfor (ptr, what) - char *ptr; - char what; -{ - if (*ptr == what) - ptr++; - else - as_bad (_("expected %c"), what); - - return ptr; -} - -/* Make sure the mode supplied is the size of a word. */ - -static void -regword (mode, string) - int mode; - char *string; -{ - int ok; - - ok = CLASS_REG_WORD; - if (ok != mode) - { - as_bad (_("register is wrong size for a word %s"), string); - } -} - -/* Make sure the mode supplied is the size of an address. */ - -static void -regaddr (mode, string) - int mode; - char *string; -{ - int ok; - - ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD; - if (ok != mode) - { - as_bad (_("register is wrong size for address %s"), string); - } -} - -struct ctrl_names { - int value; - char *name; -}; - -struct ctrl_names ctrl_table[] = { - { 0x2, "fcw" }, - { 0x3, "refresh" }, - { 0x4, "psapseg" }, - { 0x5, "psapoff" }, - { 0x5, "psap" }, - { 0x6, "nspseg" }, - { 0x7, "nspoff" }, - { 0x7, "nsp" }, - { 0 , 0 } -}; - -static void -get_ctrl_operand (ptr, mode, dst) - char **ptr; - struct z8k_op *mode; - unsigned int dst ATTRIBUTE_UNUSED; -{ - char *src = *ptr; - int i; - - while (*src == ' ') - src++; - - mode->mode = CLASS_CTRL; - for (i = 0; ctrl_table[i].name; i++) - { - int j; - - for (j = 0; ctrl_table[i].name[j]; j++) - { - if (ctrl_table[i].name[j] != src[j]) - goto fail; - } - the_ctrl = ctrl_table[i].value; - *ptr = src + j; - return; - fail: - ; - } - the_ctrl = 0; - return; -} - -struct flag_names { - int value; - char *name; - -}; - -struct flag_names flag_table[] = { - { 0x1, "p" }, - { 0x1, "v" }, - { 0x2, "s" }, - { 0x4, "z" }, - { 0x8, "c" }, - { 0x0, "+" }, - { 0, 0 } -}; - -static void -get_flags_operand (ptr, mode, dst) - char **ptr; - struct z8k_op *mode; - unsigned int dst ATTRIBUTE_UNUSED; -{ - char *src = *ptr; - int i; - int j; - - while (*src == ' ') - src++; - - mode->mode = CLASS_FLAGS; - the_flags = 0; - for (j = 0; j <= 9; j++) - { - if (!src[j]) - goto done; - for (i = 0; flag_table[i].name; i++) - { - if (flag_table[i].name[0] == src[j]) - { - the_flags = the_flags | flag_table[i].value; - goto match; - } - } - goto done; - match: - ; - } - done: - *ptr = src + j; - return; -} - -struct interrupt_names { - int value; - char *name; - -}; - -struct interrupt_names intr_table[] = { - { 0x1, "nvi" }, - { 0x2, "vi" }, - { 0x3, "both" }, - { 0x3, "all" }, - { 0, 0 } -}; - -static void -get_interrupt_operand (ptr, mode, dst) - char **ptr; - struct z8k_op *mode; - unsigned int dst ATTRIBUTE_UNUSED; -{ - char *src = *ptr; - int i; - - while (*src == ' ') - src++; - - mode->mode = CLASS_IMM; - for (i = 0; intr_table[i].name; i++) - { - int j; - - for (j = 0; intr_table[i].name[j]; j++) - { - if (intr_table[i].name[j] != src[j]) - goto fail; - } - the_interrupt = intr_table[i].value; - *ptr = src + j; - return; - fail: - ; - } - the_interrupt = 0x0; - return; -} - -struct cc_names { - int value; - char *name; - -}; - -struct cc_names table[] = { - { 0x0, "f" }, - { 0x1, "lt" }, - { 0x2, "le" }, - { 0x3, "ule" }, - { 0x4, "ov" }, - { 0x4, "pe" }, - { 0x5, "mi" }, - { 0x6, "eq" }, - { 0x6, "z" }, - { 0x7, "c" }, - { 0x7, "ult" }, - { 0x8, "t" }, - { 0x9, "ge" }, - { 0xa, "gt" }, - { 0xb, "ugt" }, - { 0xc, "nov" }, - { 0xc, "po" }, - { 0xd, "pl" }, - { 0xe, "ne" }, - { 0xe, "nz" }, - { 0xf, "nc" }, - { 0xf, "uge" }, - { 0 , 0 } -}; - -static void -get_cc_operand (ptr, mode, dst) - char **ptr; - struct z8k_op *mode; - unsigned int dst ATTRIBUTE_UNUSED; -{ - char *src = *ptr; - int i; - - while (*src == ' ') - src++; - - mode->mode = CLASS_CC; - for (i = 0; table[i].name; i++) - { - int j; - - for (j = 0; table[i].name[j]; j++) - { - if (table[i].name[j] != src[j]) - goto fail; - } - the_cc = table[i].value; - *ptr = src + j; - return; - fail: - ; - } - the_cc = 0x8; -} - -static void -get_operand (ptr, mode, dst) - char **ptr; - struct z8k_op *mode; - unsigned int dst ATTRIBUTE_UNUSED; -{ - char *src = *ptr; - char *end; - - mode->mode = 0; - - while (*src == ' ') - src++; - if (*src == '#') - { - mode->mode = CLASS_IMM; - imm_operand = &(mode->exp); - src = parse_exp (src + 1, &(mode->exp)); - } - else if (*src == '@') - { - int d; - - mode->mode = CLASS_IR; - src = parse_reg (src + 1, &d, &mode->reg); - } - else - { - int regn; - - end = parse_reg (src, &mode->mode, ®n); - - if (end) - { - int nw, nr; - - src = end; - if (*src == '(') - { - src++; - end = parse_reg (src, &nw, &nr); - if (end) - { - /* Got Ra(Rb). */ - src = end; - - if (*src != ')') - as_bad (_("Missing ) in ra(rb)")); - else - src++; - - regaddr (mode->mode, "ra(rb) ra"); -#if 0 - regword (mode->mode, "ra(rb) rb"); -#endif - mode->mode = CLASS_BX; - mode->reg = regn; - mode->x_reg = nr; - reg[ARG_RX] = nr; - } - else - { - /* Got Ra(disp). */ - if (*src == '#') - src++; - src = parse_exp (src, &(mode->exp)); - src = checkfor (src, ')'); - mode->mode = CLASS_BA; - mode->reg = regn; - mode->x_reg = 0; - imm_operand = &(mode->exp); - } - } - else - { - mode->reg = regn; - mode->x_reg = 0; - } - } - else - { - /* No initial reg. */ - src = parse_exp (src, &(mode->exp)); - if (*src == '(') - { - src++; - end = parse_reg (src, &(mode->mode), ®n); - regword (mode->mode, "addr(Ra) ra"); - mode->mode = CLASS_X; - mode->reg = regn; - mode->x_reg = 0; - da_operand = &(mode->exp); - src = checkfor (end, ')'); - } - else - { - /* Just an address. */ - mode->mode = CLASS_DA; - mode->reg = 0; - mode->x_reg = 0; - da_operand = &(mode->exp); - } - } - } - *ptr = src; -} - -static char * -get_operands (opcode, op_end, operand) - opcode_entry_type *opcode; - char *op_end; - op_type *operand; -{ - char *ptr = op_end; - char *savptr; - - switch (opcode->noperands) - { - case 0: - operand[0].mode = 0; - operand[1].mode = 0; - break; - - case 1: - ptr++; - if (opcode->arg_info[0] == CLASS_CC) - { - get_cc_operand (&ptr, operand + 0, 0); - } - else if (opcode->arg_info[0] == CLASS_FLAGS) - { - get_flags_operand (&ptr, operand + 0, 0); - } - else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2))) - { - get_interrupt_operand (&ptr, operand + 0, 0); - } - else - { - get_operand (&ptr, operand + 0, 0); - } - operand[1].mode = 0; - break; - - case 2: - ptr++; - savptr = ptr; - if (opcode->arg_info[0] == CLASS_CC) - { - get_cc_operand (&ptr, operand + 0, 0); - } - else if (opcode->arg_info[0] == CLASS_CTRL) - { - get_ctrl_operand (&ptr, operand + 0, 0); - if (the_ctrl == 0) - { - ptr = savptr; - get_operand (&ptr, operand + 0, 0); - if (ptr == 0) - return NULL; - if (*ptr == ',') - ptr++; - get_ctrl_operand (&ptr, operand + 1, 1); - return ptr; - } - } - else - { - get_operand (&ptr, operand + 0, 0); - } - if (ptr == 0) - return NULL; - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 1, 1); - break; - - case 3: - ptr++; - get_operand (&ptr, operand + 0, 0); - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 1, 1); - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 2, 2); - break; - - case 4: - ptr++; - get_operand (&ptr, operand + 0, 0); - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 1, 1); - if (*ptr == ',') - ptr++; - get_operand (&ptr, operand + 2, 2); - if (*ptr == ',') - ptr++; - get_cc_operand (&ptr, operand + 3, 3); - 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. */ - -static opcode_entry_type * -get_specific (opcode, operands) - opcode_entry_type *opcode; - op_type *operands; - -{ - opcode_entry_type *this_try = opcode; - int found = 0; - unsigned int noperands = opcode->noperands; - - int this_index = opcode->idx; - - while (this_index == opcode->idx && !found) - { - unsigned int i; - - this_try = opcode++; - for (i = 0; i < noperands; i++) - { - unsigned int mode = operands[i].mode; - - if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) - { - /* It could be an pc rel operand, if this is a da mode - and we like disps, then insert it. */ - - if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) - { - /* This is the case. */ - operands[i].mode = CLASS_DISP; - } - else if (mode == CLASS_BA && this_try->arg_info[i]) - { - /* Can't think of a way to turn what we've been - given into something that's OK. */ - goto fail; - } - else if (this_try->arg_info[i] & CLASS_PR) - { - if (mode == CLASS_REG_LONG && segmented_mode) - { - /* OK. */ - } - else if (mode == CLASS_REG_WORD && !segmented_mode) - { - /* OK. */ - } - else - goto fail; - } - else - goto fail; - } - switch (mode & CLASS_MASK) - { - default: - break; - case CLASS_X: - case CLASS_IR: - case CLASS_BA: - case CLASS_BX: - case CLASS_DISP: - case CLASS_REG: - case CLASS_REG_WORD: - case CLASS_REG_BYTE: - case CLASS_REG_QUAD: - case CLASS_REG_LONG: - case CLASS_REGN0: - reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; - break; - } - } - - found = 1; - fail: - ; - } - if (found) - return this_try; - else - return 0; -} - -#if 0 /* Not used. */ -static void -check_operand (operand, width, string) - struct z8k_op *operand; - unsigned int width; - char *string; -{ - if (operand->exp.X_add_symbol == 0 - && operand->exp.X_op_symbol == 0) - { - - /* No symbol involved, let's look at offset, it's dangerous if - any of the high bits are not 0 or ff's, find out by oring or - anding with the width and seeing if the answer is 0 or all - fs. */ - if ((operand->exp.X_add_number & ~width) != 0 && - (operand->exp.X_add_number | width) != (~0)) - { - as_warn (_("operand %s0x%x out of range."), - string, operand->exp.X_add_number); - } - } - -} -#endif - -static char buffer[20]; - -static void -newfix (ptr, type, operand) - int ptr; - int type; - expressionS *operand; -{ - if (operand->X_add_symbol - || operand->X_op_symbol - || operand->X_add_number) - { - fix_new_exp (frag_now, - ptr, - 1, - operand, - 0, - type); - } -} - -static char * -apply_fix (ptr, type, operand, size) - char *ptr; - int type; - expressionS *operand; - int size; -{ - int n = operand->X_add_number; - - newfix ((ptr - buffer) / 2, type, operand); - switch (size) - { - case 8: /* 8 nibbles == 32 bits. */ - *ptr++ = n >> 28; - *ptr++ = n >> 24; - *ptr++ = n >> 20; - *ptr++ = n >> 16; - case 4: /* 4 nibbles == 16 bits. */ - *ptr++ = n >> 12; - *ptr++ = n >> 8; - case 2: - *ptr++ = n >> 4; - case 1: - *ptr++ = n >> 0; - break; - } - return ptr; -} - -/* Now we know what sort of opcodes it is. Let's build the bytes. */ - -#define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y; - -static void -build_bytes (this_try, operand) - opcode_entry_type *this_try; - struct z8k_op *operand ATTRIBUTE_UNUSED; -{ - char *output_ptr = buffer; - int c; - int nib; - int nibble; - unsigned int *class_ptr; - - frag_wane (frag_now); - frag_new (0); - - memset (buffer, 20, 0); - class_ptr = this_try->byte_info; - - for (nibble = 0; (c = *class_ptr++); nibble++) - { - - switch (c & CLASS_MASK) - { - default: - abort (); - - case CLASS_ADDRESS: - /* Direct address, we don't cope with the SS mode right now. */ - if (segmented_mode) - { - /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */ - output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8); - } - else - { - output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); - } - da_operand = 0; - break; - case CLASS_DISP8: - /* pc rel 8 bit */ - output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2); - da_operand = 0; - break; - - case CLASS_0DISP7: - /* pc rel 7 bit */ - *output_ptr = 0; - output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); - da_operand = 0; - break; - - case CLASS_1DISP7: - /* pc rel 7 bit */ - *output_ptr = 0x80; - output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); - output_ptr[-2] = 0x8; - da_operand = 0; - break; - - case CLASS_BIT_1OR2: - *output_ptr = c & 0xf; - if (imm_operand) - { - if (imm_operand->X_add_number == 2) - *output_ptr |= 2; - else if (imm_operand->X_add_number != 1) - as_bad (_("immediate must be 1 or 2")); - } - else - as_bad (_("immediate 1 or 2 expected")); - output_ptr++; - break; - case CLASS_CC: - *output_ptr++ = the_cc; - break; - case CLASS_0CCC: - *output_ptr++ = the_ctrl; - break; - case CLASS_1CCC: - *output_ptr++ = the_ctrl | 0x8; - break; - case CLASS_00II: - *output_ptr++ = (~the_interrupt & 0x3); - break; - case CLASS_01II: - *output_ptr++ = (~the_interrupt & 0x3) | 0x4; - break; - case CLASS_FLAGS: - *output_ptr++ = the_flags; - break; - case CLASS_BIT: - *output_ptr++ = c & 0xf; - break; - case CLASS_REGN0: - if (reg[c & 0xf] == 0) - as_bad (_("can't use R0 here")); - /* Fall through. */ - case CLASS_REG: - case CLASS_REG_BYTE: - case CLASS_REG_WORD: - case CLASS_REG_LONG: - case CLASS_REG_QUAD: - /* Insert bit mattern of right reg. */ - *output_ptr++ = reg[c & 0xf]; - break; - case CLASS_DISP: - switch (c & ARG_MASK) - { - case ARG_DISP12: - output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4); - break; - case ARG_DISP16: - output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4); - break; - default: - output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); - } - da_operand = 0; - break; - - case CLASS_IMM: - { - nib = 0; - switch (c & ARG_MASK) - { - case ARG_IMM4: - output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); - break; - case ARG_IMM4M1: - imm_operand->X_add_number--; - output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); - break; - case ARG_IMMNMINUS1: - imm_operand->X_add_number--; - output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); - break; - case ARG_NIM8: - imm_operand->X_add_number = -imm_operand->X_add_number; - case ARG_IMM8: - output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2); - break; - case ARG_IMM16: - output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4); - break; - - case ARG_IMM32: - output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8); - break; - - default: - abort (); - } - } - } - } - - /* Copy from the nibble buffer into the frag. */ - { - int length = (output_ptr - buffer) / 2; - char *src = buffer; - char *fragp = frag_more (length); - - while (src < output_ptr) - { - *fragp = (src[0] << 4) | src[1]; - src += 2; - fragp++; - } - } -} - -/* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This function is supposed to emit - the frags/bytes it assembles to. */ - -void -md_assemble (str) - char *str; -{ - char c; - char *op_start; - char *op_end; - struct z8k_op operand[3]; - opcode_entry_type *opcode; - opcode_entry_type *prev_opcode; - - /* Drop leading whitespace. */ - while (*str == ' ') - str++; - - /* Find the op code end. */ - for (op_start = op_end = str; - *op_end != 0 && *op_end != ' '; - op_end++) - ; - - if (op_end == op_start) - { - as_bad (_("can't find opcode ")); - } - c = *op_end; - - *op_end = 0; - - opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start); - - if (opcode == NULL) - { - as_bad (_("unknown opcode")); - return; - } - - if (opcode->opcode == 250) - { - /* Was really a pseudo op. */ - - pseudo_typeS *p; - char oc; - - char *old = input_line_pointer; - *op_end = c; - - input_line_pointer = op_end; - - oc = *old; - *old = '\n'; - while (*input_line_pointer == ' ') - input_line_pointer++; - p = (pseudo_typeS *) (opcode->func); - - (p->poc_handler) (p->poc_val); - input_line_pointer = old; - *old = oc; - } - else - { - input_line_pointer = 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 (_("Can't find opcode to match operands")); - return; - } - - build_bytes (opcode, operand); - } -} - -void -tc_crawl_symbol_chain (headers) - object_headers *headers ATTRIBUTE_UNUSED; -{ - printf (_("call to tc_crawl_symbol_chain \n")); -} - -symbolS * -md_undefined_symbol (name) - char *name ATTRIBUTE_UNUSED; -{ - return 0; -} - -void -tc_headers_hook (headers) - object_headers *headers ATTRIBUTE_UNUSED; -{ - 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 = "z:"; - -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; -{ - switch (c) - { - case 'z': - if (!strcmp (arg, "8001")) - s_segm (); - else if (!strcmp (arg, "8002")) - s_unseg (); - else - { - as_bad (_("invalid architecture -z%s"), arg); - return 0; - } - break; - - default: - return 0; - } - - return 1; -} - -void -md_show_usage (stream) - FILE *stream; -{ - fprintf (stream, _("\ -Z8K options:\n\ --z8001 generate segmented code\n\ --z8002 generate unsegmented code\n")); -} - -void -tc_aout_fix_to_chars () -{ - printf (_("call to tc_aout_fix_to_chars \n")); - abort (); -} - -void -md_convert_frag (headers, seg, fragP) - object_headers *headers ATTRIBUTE_UNUSED; - segT seg ATTRIBUTE_UNUSED; - fragS *fragP ATTRIBUTE_UNUSED; -{ - printf (_("call to md_convert_frag \n")); - abort (); -} - -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_fix3 (fixP, valP, segment) - fixS *fixP; - valueT * valP; - segT segment ATTRIBUTE_UNUSED; -{ - long val = * (long *) valP; - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - - switch (fixP->fx_r_type) - { - case R_IMM4L: - buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf); - break; - - case R_JR: - - *buf++ = val; -#if 0 - if (val != 0) - abort (); -#endif - break; - - case R_DISP7: - - *buf++ += val; -#if 0 - if (val != 0) - abort (); -#endif - break; - - case R_IMM8: - buf[0] += val; - break; - case R_IMM16: - *buf++ = (val >> 8); - *buf++ = val; - break; - case R_IMM32: - *buf++ = (val >> 24); - *buf++ = (val >> 16); - *buf++ = (val >> 8); - *buf++ = val; - break; -#if 0 - case R_DA | R_SEG: - *buf++ = (val >> 16); - *buf++ = 0x00; - *buf++ = (val >> 8); - *buf++ = val; - break; -#endif - - case 0: - md_number_to_chars (buf, val, fixP->fx_size); - break; - - default: - abort (); - } - - if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -} - -int -md_estimate_size_before_relax (fragP, segment_type) - register fragS *fragP ATTRIBUTE_UNUSED; - register segT segment_type ATTRIBUTE_UNUSED; -{ - printf (_("call tomd_estimate_size_before_relax \n")); - abort (); -} - -/* 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 ATTRIBUTE_UNUSED; -{ - abort (); -} - -void -tc_coff_symbol_emit_hook (s) - symbolS *s ATTRIBUTE_UNUSED; -{ -} - -void -tc_reloc_mangle (fix_ptr, intr, base) - fixS *fix_ptr; - struct internal_reloc *intr; - bfd_vma base; - -{ - symbolS *symbol_ptr; - - if (fix_ptr->fx_addsy - && fix_ptr->fx_subsy) - { - symbolS *add = fix_ptr->fx_addsy; - symbolS *sub = fix_ptr->fx_subsy; - - if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub)) - as_bad (_("Can't subtract symbols in different sections %s %s"), - S_GET_NAME (add), S_GET_NAME (sub)); - else - { - int diff = S_GET_VALUE (add) - S_GET_VALUE (sub); - - fix_ptr->fx_addsy = 0; - fix_ptr->fx_subsy = 0; - fix_ptr->fx_offset += diff; - } - } - 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 == 0) - { - /* 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; - case 4: - intr->r_type = R_IMM32; - 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; - - if (symbol_ptr) - intr->r_symndx = symbol_ptr->sy_number; - else - intr->r_symndx = -1; -} |