diff options
author | Steve Chamberlain <sac@cygnus> | 1993-02-04 20:47:48 +0000 |
---|---|---|
committer | Steve Chamberlain <sac@cygnus> | 1993-02-04 20:47:48 +0000 |
commit | 033400ec8d7c1eec80aa57af2a1d8298b04ae264 (patch) | |
tree | aa787a02d4d4e3bc9d45877067c8d5de2f2ae6f0 /gas | |
parent | a3b3dbdda5d8e447cb259a288c7309d7a7db9086 (diff) | |
download | gdb-033400ec8d7c1eec80aa57af2a1d8298b04ae264.zip gdb-033400ec8d7c1eec80aa57af2a1d8298b04ae264.tar.gz gdb-033400ec8d7c1eec80aa57af2a1d8298b04ae264.tar.bz2 |
* config/{h8500.mt, tc-h8500.c, tc-h8500.h, obj-coffbfd.c,
obj-coffbfd.h}: support for the H8/500
Diffstat (limited to 'gas')
-rw-r--r-- | gas/config/.Sanitize | 9 | ||||
-rw-r--r-- | gas/config/h8500.mt | 3 | ||||
-rw-r--r-- | gas/config/obj-coffbfd.c | 4 | ||||
-rw-r--r-- | gas/config/obj-coffbfd.h | 5 | ||||
-rw-r--r-- | gas/config/tc-h8500.c | 1550 | ||||
-rw-r--r-- | gas/config/tc-h8500.h | 41 |
6 files changed, 1609 insertions, 3 deletions
diff --git a/gas/config/.Sanitize b/gas/config/.Sanitize index 7f226bd..9e50ba4 100644 --- a/gas/config/.Sanitize +++ b/gas/config/.Sanitize @@ -36,6 +36,7 @@ coff_gnu.h cplus-dem.c ebmon29k.mt h8300.mt +h8500.mt h8300hds.mt ho-ansi.h ho-decstation.h @@ -84,6 +85,8 @@ tc-generic.c tc-generic.h tc-h8300.c tc-h8300.h +tc-h8500.c +tc-h8500.h tc-i386.c tc-i386.h tc-i860.c @@ -139,7 +142,11 @@ echo Done in `pwd`. # # # $Log$ -# Revision 1.31 1992/12/30 20:34:14 ian +# Revision 1.32 1993/02/04 20:47:35 sac +# * config/{h8500.mt, tc-h8500.c, tc-h8500.h, obj-coffbfd.c, +# obj-coffbfd.h}: support for the H8/500 +# +# Revision 1.31 1992/12/30 20:34:14 ian # Wed Dec 30 10:18:57 1992 Ian Lance Taylor (ian@cygnus.com) # # * app.c, config/tc-*.c: Don't include read.h, since it is already diff --git a/gas/config/h8500.mt b/gas/config/h8500.mt new file mode 100644 index 0000000..e990aeb --- /dev/null +++ b/gas/config/h8500.mt @@ -0,0 +1,3 @@ +TARG_CPU_DEPENDENTS=$(srcdir)/../opcodes/h8500-opc.h +LOCAL_LOADLIBES=../bfd/libbfd.a +TDEFINES=-DBFD_HEADERS -DMANY_SEGMENTS -DBFD diff --git a/gas/config/obj-coffbfd.c b/gas/config/obj-coffbfd.c index 8701bb1..80583af 100644 --- a/gas/config/obj-coffbfd.c +++ b/gas/config/obj-coffbfd.c @@ -31,7 +31,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ Hacked for BFDness by steve chamberlain - This object module now supports the Hitachi H8/300 and the AMD 29k + This object module now supports the Hitachi H8/{3|5}00 and the AMD 29k sac@cygnus.com */ @@ -1887,7 +1887,7 @@ DEFUN_VOID (write_object_file) H_SET_STRING_SIZE (&headers, string_byte_count); -#if !defined(TC_H8300) && !defined(TC_Z8K) +#if !defined(TC_H8300) && !defined(TC_Z8K) for (i = SEG_E0; i < SEG_UNKNOWN; i++) { fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i); diff --git a/gas/config/obj-coffbfd.h b/gas/config/obj-coffbfd.h index 702e863..d73500d 100644 --- a/gas/config/obj-coffbfd.h +++ b/gas/config/obj-coffbfd.h @@ -49,6 +49,11 @@ #define TARGET_FORMAT "coff-h8300" #endif +#ifdef TC_H8500 +#include "coff/h8500.h" +#define TARGET_FORMAT "coff-h8500" +#endif + #ifdef TC_M68K #include "coff/m68k.h" #define TARGET_FORMAT "coff-m68k" diff --git a/gas/config/tc-h8500.c b/gas/config/tc-h8500.c new file mode 100644 index 0000000..ca8d57b --- /dev/null +++ b/gas/config/tc-h8500.c @@ -0,0 +1,1550 @@ + +/* tc-h8500.c -- Assemble code for the Hitachi H8/500 + Copyright (C) 1993 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + Written By Steve Chamberlain + sac@cygnus.com + */ + +#include <stdio.h> +#include "as.h" +#include "bfd.h" + +#define DEFINE_TABLE +#include "../opcodes/h8500-opc.h" +#include <ctype.h> + +const char comment_chars[] = +{';', 0}; +const char line_separator_chars[] = +{'$', 0}; +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} +}; + +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 -128 +#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; + + 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 */ + md_relax_table[C (BRANCH, BYTE_DISP)].rlx_forward = BYTE_F; + md_relax_table[C (BRANCH, BYTE_DISP)].rlx_backward = BYTE_B; + md_relax_table[C (BRANCH, BYTE_DISP)].rlx_length = 2; + md_relax_table[C (BRANCH, BYTE_DISP)].rlx_more = C (BRANCH, WORD_DISP); + + md_relax_table[C (BRANCH, WORD_DISP)].rlx_forward = WORD_F; + md_relax_table[C (BRANCH, WORD_DISP)].rlx_backward = WORD_B; + md_relax_table[C (BRANCH, WORD_DISP)].rlx_length = 3; + md_relax_table[C (BRANCH, WORD_DISP)].rlx_more = 0; + + md_relax_table[C (SCB_F, BYTE_DISP)].rlx_forward = BYTE_F; + md_relax_table[C (SCB_F, BYTE_DISP)].rlx_backward = BYTE_B; + md_relax_table[C (SCB_F, BYTE_DISP)].rlx_length = 3; + md_relax_table[C (SCB_F, BYTE_DISP)].rlx_more = C (SCB_F, WORD_DISP); + + md_relax_table[C (SCB_F, WORD_DISP)].rlx_forward = WORD_F; + md_relax_table[C (SCB_F, WORD_DISP)].rlx_backward = WORD_B; + md_relax_table[C (SCB_F, WORD_DISP)].rlx_length = 8; + md_relax_table[C (SCB_F, WORD_DISP)].rlx_more = 0; + + md_relax_table[C (SCB_TST, BYTE_DISP)].rlx_forward = BYTE_F; + md_relax_table[C (SCB_TST, BYTE_DISP)].rlx_backward = BYTE_B; + md_relax_table[C (SCB_TST, BYTE_DISP)].rlx_length = 3; + md_relax_table[C (SCB_TST, BYTE_DISP)].rlx_more = C (SCB_TST, WORD_DISP); + + md_relax_table[C (SCB_TST, WORD_DISP)].rlx_forward = WORD_F; + md_relax_table[C (SCB_TST, WORD_DISP)].rlx_backward = WORD_B; + md_relax_table[C (SCB_TST, WORD_DISP)].rlx_length = 10; + md_relax_table[C (SCB_TST, WORD_DISP)].rlx_more = 0; + +} + +int rn; /* register number used by RN */ +int rs; /* register number used by RS */ +int rd; /* register number used by RD */ +int crb; /* byte size cr */ +int crw; /* word sized cr */ + +expressionS displacement; /* displacement expression */ +int displacement_size; /* and size if given */ + +int immediate_inpage; +expressionS immediate; /* immediate expression */ +int immediate_size; /* and size if given */ + +expressionS absolute; /* absolute expression */ +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 */ +int +parse_reg (src, mode, reg) + char *src; + int *mode; + unsigned int *reg; +{ + if (src[0] == 'r') + { + if (src[1] >= '0' && src[1] <= '7') + { + *mode = RN; + *reg = (src[1] - '0'); + return 2; + } + } + + if (src[0] == 's' && src[1] == 'p') + { + *mode = RN; + *reg = 7; + return 2; + } + if (src[0] == 'c' && src[1] == 'c' && src[2] == 'r') + { + *mode = CRB; + *reg = 1; + return 3; + } + if (src[0] == 's' && src[1] == 'r') + { + *mode = CRW; + *reg = 0; + return 2; + } + + if (src[0] == 'b' && src[1] == 'r') + { + *mode = CRB; + *reg = 3; + return 2; + } + + if (src[0] == 'e' && src[1] == 'p') + { + *mode = CRB; + *reg = 4; + return 2; + } + + if (src[0] == 'd' && src[1] == 'p') + { + *mode = CRB; + *reg = 5; + return 2; + } + + if (src[0] == 't' && src[1] == 'p') + { + *mode = CRW; + *reg = 7; + return 2; + } + + if (src[0] == 'f' && src[1] == 'p') + { + *mode = RN; + *reg = 6; + return 2; + } + return 0; +} + +char * +parse_exp (s, op, page) + char *s; + expressionS *op; +int *page; +{ + char *save; + char *new; + segT seg; + + 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 = 1; + } + else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f') { + s+=4; + } + } + + input_line_pointer = s; + + seg = expr (0, op); + new = input_line_pointer; + input_line_pointer = save; + if (SEG_NORMAL (seg)) + return new; + switch (seg) + { + case SEG_ABSOLUTE: + case SEG_UNKNOWN: + case SEG_DIFFERENCE: + case SEG_BIG: + case SEG_REGISTER: + return new; + case SEG_ABSENT: + as_bad ("Missing operand"); + return new; + default: + as_bad ("Don't understand operand of type %s", segment_name (seg)); + return new; + } +} + +static char * +skip_colonthing (ptr, exp, def, size8, size16, size24) + 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) { + exp->type = IMM8; + } + else { + /* Let's work out the size from the context */ + if (size8 + && exp->exp.X_seg == SEG_ABSOLUTE + && exp->exp.X_add_number >= -128 + && exp->exp.X_add_number <= 127) + { + 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_subtract_symbol = 0; + op->exp.X_add_number = mask; + op->exp.X_seg = SEG_ABSOLUTE; + 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) + char **ptr; + h8500_operand_info *op; +{ + char *src = *ptr; + int mode; + unsigned int num; + unsigned int len; + unsigned int size; + + 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 (src, op, ABS16, ABS8, ABS16, ABS24); + return; + } + + op->type = RNDEC; + op->reg = num; + *ptr = src + len; + return; + } + if (*src == '(') + { + /* Disp */ + src++; + + src = skip_colonthing (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 (src, op, ABS16, ABS8, ABS16, 0); + return; + } + } + + if (*src == '#') + { + src++; + *ptr = skip_colonthing (src, op, IMM16, IMM8, IMM16, 0); + return; + } + else + { + *ptr = skip_colonthing (src, op, PCREL8, PCREL8, PCREL16, 0); + } +} + +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, 0); + operand[1].type = 0; + break; + + case 2: + ptr++; + get_operand (&ptr, operand + 0, 0); + if (*ptr == ',') + ptr++; + get_operand (&ptr, operand + 1, 1); + 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; + +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 dispreg; + 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_D16: + /* Opcode needs (disp:16,fp) */ + if (user->type == DISP16 && user->reg == 6) + { + displacement = user->exp; + continue; + } + break; + case FPIND_D8: + /* Opcode needs (disp:8,fp) */ + if (user->type == DISP8 && 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 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) + { + crb = user->reg; + continue; + } + break; + case CRW: + if (user->type == CRW) + { + 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_seg == SEG_ABSOLUTE + && + (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_seg != SEG_ABSOLUTE + || 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; +} + +#if 0 +static void +DEFUN (check_operand, (operand, width, string), + struct h8_op *operand AND + unsigned int width AND + char *string) +{ + if (operand->exp.X_add_symbol == 0 + && operand->exp.X_subtract_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 + +insert (size, output, index, exp, reloc, opcode) + char *output; + int index; + expressionS *exp; + char *opcode; +{ + md_number_to_chars (output + index, exp->X_add_number, size); + exp->X_add_number = 0; + if (exp->X_add_symbol || exp->X_subtract_symbol) + { + fix_new (frag_now, + output - frag_now->fr_literal + index, + size, + exp->X_add_symbol, + exp->X_subtract_symbol, + (short) (exp->X_add_number), + 0, + 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; + +{ + unsigned int i; + + char part; + int index; + char high; + int nib; + int byte; + + 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: + output[index] |= rd; + break; + case RS: + output[index] |= rs; + break; + case DISP16: + case FPIND_D16: + insert (2, output, index, &displacement, R_H8500_IMM16); + index++; + break; + case DISP8: + case FPIND_D8: + insert (1, output, index, &displacement, R_H8500_IMM8); + break; + case IMM16: + insert (2, output, index, &immediate, R_H8500_IMM16); + index++; + break; + case RLIST: + case IMM8: + insert (1, output, index, &immediate, immediate_inpage ? + R_H8500_HIGH8 : R_H8500_IMM8); + break; + case PCREL16: + insert (2, output, index, &displacement, R_H8500_PCREL16); + index++; + break; + case PCREL8: + insert (1, output, index, &displacement, R_H8500_PCREL8, output); + break; + case IMM4: + output[index] |= check (&immediate, 0, 15); + break; + case CRB: + output[index] |= crb; + break; + case CRW: + output[index] |= crw; + break; + case ABS16: + insert (2, output, index, absolute, R_H8500_IMM16); + index++; + break; + case ABS8: + insert (1, output, index, absolute, R_H8500_IMM8); + 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; + unsigned int i; + h8500_operand_info operand[2]; + h8500_opcode_info *opcode; + h8500_opcode_info *prev_opcode; + char name[11]; + char *dot = 0; + char c; + + int nlen = 0; + + /* 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_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; + } + + 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 ("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"); +} + +void +DEFUN_VOID (md_end) +{ +} + +/* 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 ""; /* Someone should teach Dean about null pointers */ +} + +int +md_parse_option (argP, cntP, vecP) + char **argP; + int *cntP; + char ***vecP; + +{ + return 0; + +} + +int md_short_jump_size; + +void +tc_aout_fix_to_chars () +{ + printf ("call to tc_aout_fix_to_chars \n"); + abort (); +} + +void +md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) + char *ptr; + long from_addr; + long to_addr; + fragS *frag; + symbolS *to_symbol; +{ + as_fatal ("failed sanity check."); +} + +void +md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) + char *ptr; + long from_addr, to_addr; + fragS *frag; + symbolS *to_symbol; +{ + as_fatal ("failed sanity check."); +} + +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 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, fragP) + object_headers *headers; + fragS *fragP; + +{ + fixS *fixP; + 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 */ + fixP = fix_new (fragP, + fragP->fr_fix + inst_size, + 2, + fragP->fr_symbol, + 0, + 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; + } + +} + +long +DEFUN (md_section_align, (seg, size), + segT seg AND + long 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; + + switch (fixP->fx_size) + { + case 1: + *buf++ = val; + break; + case 2: + *buf++ = (val >> 8); + *buf++ = val; + break; + case 4: + *buf++ = (val >> 24); + *buf++ = (val >> 16); + *buf++ = (val >> 8); + *buf++ = val; + break; + default: + abort (); + + } +} + +void +DEFUN (md_operand, (expressionP), expressionS * expressionP) +{ +} + +int md_long_jump_size; + +/* +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 growth = 0; + char *buffer = fragP->fr_fix + fragP->fr_literal; + 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); + } + 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 + fragP->fr_fix; +} + +/* Put number into target byte order */ + +void +md_number_to_chars (ptr, use, nbytes) + char *ptr; + long use; + int nbytes; +{ + switch (nbytes) + { + case 4: + *ptr++ = (use >> 24) & 0xff; + case 3: + *ptr++ = (use >> 16) & 0xff; + case 2: + *ptr++ = (use >> 8) & 0xff; + case 1: + *ptr++ = (use >> 0) & 0xff; + break; + default: + abort (); + } +} +long +md_pcrel_from (fixP) + fixS *fixP; + +{ + return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; +} + +void +tc_coff_symbol_emit_hook () +{ +} + +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; + + if (symbol_ptr) + intr->r_symndx = symbol_ptr->sy_number; + else + intr->r_symndx = -1; + +} + +/* end of tc-h8500.c */ diff --git a/gas/config/tc-h8500.h b/gas/config/tc-h8500.h new file mode 100644 index 0000000..2826e1e --- /dev/null +++ b/gas/config/tc-h8500.h @@ -0,0 +1,41 @@ +/* This file is tc-h8500.h + + Copyright (C) 1993 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +#define TC_H8500 + +/* This macro translates between an internal fix and an coff reloc type */ +#define TC_COFF_FIX2RTYPE(fixP) abort(); + +#define BFD_ARCH bfd_arch_h8500 +#define COFF_MAGIC 0x8500 +#define TC_COUNT_RELOC(x) (1) +#define IGNORE_NONSTANDARD_ESCAPES + +#define TC_RELOC_MANGLE(a,b,c) tc_reloc_mangle(a,b,c) + +#define DO_NOT_STRIP 0 +#define DO_STRIP 0 +#define LISTING_HEADER "Hitachi H8/500 GAS " +#define NEED_FX_R_TYPE 1 +#define RELOC_32 1234 +#define COFF_FLAGS 1 + +/* end of tc-h8500.h */ |