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author | Ken Raeburn <raeburn@cygnus> | 1994-06-02 16:06:43 +0000 |
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committer | Ken Raeburn <raeburn@cygnus> | 1994-06-02 16:06:43 +0000 |
commit | 0952861cabd6220e77b5e56152b5312f513d25ef (patch) | |
tree | 6fad1a1fb0785f0d0a5f3e518f934ca466786709 /gas/config | |
parent | 4b9f44094951570412eac06f780287188a8beabc (diff) | |
download | gdb-0952861cabd6220e77b5e56152b5312f513d25ef.zip gdb-0952861cabd6220e77b5e56152b5312f513d25ef.tar.gz gdb-0952861cabd6220e77b5e56152b5312f513d25ef.tar.bz2 |
Handle EV5 (21164/66/68) PALcode support.
* config/tc-alpha.c (machine): New variable.
(load_insn): New macro.
(load_insn_table): New function.
(md_begin): Call load_insn_table, once for basic instructions and
once for appropriate PAL instruction table.
(md_parse_option): Set `machine' based on -m##### arguments.
* config/alpha-opcode.h (alpha_pal21064_opcodes): Split out from alpha_opcodes.
(alpha_pal21164_opcodes): New table.
(NUM21064OPCODES, NUM21164OPCODES): New macros.
Diffstat (limited to 'gas/config')
-rw-r--r-- | gas/config/alpha-opcode.h | 83 | ||||
-rw-r--r-- | gas/config/tc-alpha.c | 558 |
2 files changed, 536 insertions, 105 deletions
diff --git a/gas/config/alpha-opcode.h b/gas/config/alpha-opcode.h index dd35c58..af1c1d3 100644 --- a/gas/config/alpha-opcode.h +++ b/gas/config/alpha-opcode.h @@ -86,7 +86,7 @@ Kinds of operands: e fa floating point register. f fb floating point register. g fc floating point register. - I 26 bit immediate + I 26 bit immediate (PALcode function #) l 16 low bits of immediate h 16 high(er) bits of immediate [Never used. KR] L 22 bit PC relative immediate. @@ -173,6 +173,33 @@ static const struct alpha_opcode alpha_opcodes[] = { "stq_c", 0xbc000000, 0, "1,l(2)" }, { "stq_c", 0xbc000000, 0, "1,P" }, /* regbase macro */ +{ "ldb", 0, 0, "1,l(2)Bd" }, +{ "ldb", 0, 0, "1,PBd" }, +{ "ldbu", 0, 0, "1,l(2)Bd" }, +{ "ldbu", 0, 0, "1,PBd" }, +{ "ldw", 0, 0, "1,l(2)Bd" }, +{ "ldw", 0, 0, "1,PBd" }, +{ "ldwu", 0, 0, "1,l(2)Bd" }, +{ "ldwu", 0, 0, "1,PBd" }, +{ "stb", 0, 0, "1,l(2)Bd" }, +{ "stb", 0, 0, "1,PBd" }, +{ "stw", 0, 0, "1,l(2)Bd" }, +{ "stw", 0, 0, "1,PBd" }, +{ "ustw", 0, 0, "1,l(2)Bd" }, +{ "ustw", 0, 0, "1,PBd" }, +{ "ustl", 0, 0, "1,l(2)Bd" }, +{ "ustl", 0, 0, "1,PBd" }, +{ "ustq", 0, 0, "1,l(2)Bd" }, +{ "ustq", 0, 0, "1,PBd" }, +{ "uldw", 0, 0, "1,l(2)Bd" }, +{ "uldw", 0, 0, "1,PBd" }, +{ "uldwu", 0, 0, "1,l(2)Bd" }, +{ "uldwu", 0, 0, "1,PBd" }, +{ "uldl", 0, 0, "1,l(2)Bd" }, +{ "uldl", 0, 0, "1,PBd" }, +{ "uldq", 0, 0, "1,l(2)Bd" }, +{ "uldq", 0, 0, "1,PBd" }, + { "beq", 0xe4000000, 0, "1,L" }, /* 6o+5a+21d */ { "bne", 0xf4000000, 0, "1,L" }, { "blt", 0xe8000000, 0, "1,L" }, @@ -723,7 +750,7 @@ static const struct alpha_opcode alpha_opcodes[] = { "mult/suid", 0x5800fc40, 1, "e,f,g" }, /* - * Miscellaneous + * Miscellaneous, including standard PAL instructions. */ { "pal", 0x00000000, 0, "I" }, /* 6o+26f */ { "call_pal", 0x00000000, 0, "I" }, /* alias */ @@ -741,8 +768,19 @@ static const struct alpha_opcode alpha_opcodes[] = { "rs", 0x6000f000, 0, "1" }, /* - * PAL instructions + * More macros + */ +{ "nop", 0x47ff041f, 0, "" }, /* or zero,zero,zero */ +{ "mov", 0x47e00400, 0, "2,3" }, /* or zero,r2,r3 */ +}; + +#define NUMOPCODES ((sizeof alpha_opcodes)/(sizeof alpha_opcodes[0])) + +/* + * PAL instructions for 21064 (and 21066/68) */ +static const struct alpha_opcode alpha_pal21064_opcodes[] = +{ { "hw_ld", 0x6c000000, 0, "1,t(2)" }, { "hw_ld/p", 0x6c008000, 0, "1,t(2)" }, { "hw_ld/a", 0x6c004000, 0, "1,t(2)" }, @@ -814,11 +852,42 @@ static const struct alpha_opcode alpha_opcodes[] = { "hw_mtpr", 0x74000000, 0, "R,8" }, { "hw_rei", 0x7bff8000, 0, "" }, +}; + +#define NUM21064OPCODES ((sizeof alpha_pal21064_opcodes)/(sizeof alpha_pal21064_opcodes[0])) + /* - * More macros + * 21164 (and 21166/68) specific PAL instructions. */ -{ "nop", 0x47ff041f, 0, "" }, /* or zero,zero,zero */ -{ "mov", 0x47e00400, 0, "2,3" }, /* or zero,r2,r3 */ +static const struct alpha_opcode alpha_pal21164_opcodes[] = +{ +{ "hw_ld", 0x6c000000, 0, "1,l(2)" }, /* RA, 16 bit displacement (RB) */ +{ "hw_st", 0x7c000000, 0, "1,l(2)" }, /* RA, 16 bit displacement (RB) */ + +{ "hw_ldl/a", 0x6c004000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_ldq/a", 0x6c005000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_stl/a", 0x7c004000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_stq/a", 0x7c005000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ + +{ "hw_ldl/p", 0x6c008000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_ldq/p", 0x6c009000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_stl/p", 0x7c008000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_stq/p", 0x7c009000, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ + +{ "hw_ldq/v", 0x6c001800, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ + +{ "hw_ldl/l", 0x6c000400, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_ldq/l", 0x6c001400, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ + +{ "hw_stl/c", 0x7c000400, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ +{ "hw_stq/c", 0x7c001400, 0, "1,t(2)" }, /* RA, 12 bit displacement (RB) */ + +{ "hw_mfpr", 0x64000000, 0, "R,l" }, /* RA,RB,16 bits displacement */ +{ "hw_mtpr", 0x74000000, 0, "R,l" }, /* RA,RB,16 bits displacement */ + +{ "hw_rei", 0x7bff8000, 0, "" }, + +{ "hw_rei_stall", 0x7bffc000, 0, "" }, }; -#define NUMOPCODES ((sizeof alpha_opcodes)/(sizeof alpha_opcodes[0])) +#define NUM21164OPCODES ((sizeof alpha_pal21164_opcodes)/(sizeof alpha_pal21164_opcodes[0])) diff --git a/gas/config/tc-alpha.c b/gas/config/tc-alpha.c index 8aa087f..c8da0cb 100644 --- a/gas/config/tc-alpha.c +++ b/gas/config/tc-alpha.c @@ -61,6 +61,10 @@ /* @@ Will a simple 0x8000 work here? If not, why not? */ #define GP_ADJUSTMENT (0x8000 - 0x10) +/* Which machine type is this? Currently stores an integer for the + model, one of: 21064, 21066, 21164. */ +static unsigned long machine; + /* These are exported to relaxing code, even though we don't do any relaxing on this processor currently. */ const relax_typeS md_relax_table[1]; @@ -148,7 +152,8 @@ const pseudo_typeS md_pseudo_table[] = #define T9 23 #define T10 24 #define T11 25 -#define RA 26 +#define T12 26 +#define RA 26 /* note: same as T12 */ #define PV 27 #define AT 28 #define GP 29 @@ -188,6 +193,7 @@ const char line_separator_chars[1]; /* Chars that mean this number is a floating point constant, as in "0f12.456" or "0d1.2345e12". */ +/* @@ Do all of these really get used on the alpha?? */ char FLT_CHARS[] = "rRsSfFdDxXpP"; /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be @@ -482,74 +488,100 @@ get_lit4_offset (val) return retval; } -/* This function is called once, at assembler startup time. It should - set up all the tables, etc. that the MD part of the assembler will need. */ -void -md_begin () -{ - const char *retval; - int lose = 0; - unsigned int i = 0; +#define load_insn(NAME, OP) (hash_insert (op_hash, (NAME), (PTR) (OP))) - op_hash = hash_new (); +static void +load_insn_table (ops, size) + struct alpha_opcode *ops; + int size; +{ + struct alpha_opcode *end = ops + size; + struct alpha_opcode *op; + const char *name; - for (i = 0; i < NUMOPCODES; ) + for (op = ops; op < end; ) { - const char *name = alpha_opcodes[i].name; - retval = hash_insert (op_hash, name, (PTR) & alpha_opcodes[i]); + const char *retval; + + name = op->name; + + retval = load_insn (op->name, op); if (retval) - { - as_bad ("internal error: can't hash opcode `%s': %s", - alpha_opcodes[i].name, retval); - lose = 1; - } + as_fatal ("internal error: can't hash opcode `%s': %s", + op->name, retval); + do - ++i; - while (i < NUMOPCODES - && (alpha_opcodes[i].name == name - || !strcmp (alpha_opcodes[i].name, name))); + op++; + while (op < end + && (op->name == name + || !strcmp (op->name, name))); } /* Some opcodes include modifiers of various sorts with a "/mod" syntax, like the architecture documentation suggests. However, for use with gcc at least, we also need to access those same opcodes without the "/". */ - for (i = 0; i < NUMOPCODES; ) + for (op = ops; op < end; ) { - const char *name = alpha_opcodes[i].name; + name = op->name; + if (strchr (name, '/')) { - char *p = xmalloc (strlen (name)); - const char *q = name; - char *q2 = p; - - for (; *q; q++) - if (*q != '/') - *q2++ = *q; - - *q2++ = 0; - retval = hash_insert (op_hash, p, (PTR) & alpha_opcodes[i]); - if (retval) - { - /* Ignore failures -- the opcode table does duplicate - some variants in different forms, like "hw_st/q" and - "hw_stq". */ -#if 0 - as_bad ("internal error: can't hash opcode variant `%s': %s", - p, retval); - lose = 1; -#endif - } + const char *name2, *p, *q; + + name2 = xmalloc (strlen (name)); + p = name2; + q = name; + + while (*q) + if (*q == '/') + q++; + else + *p++ = *q++; + *p = 0; + /* Ignore failures -- the opcode table does duplicate some + variants in different forms, like "hw_stq" and "hw_st/q". + Maybe the variants can be eliminated, and this error checking + restored. */ + load_insn (name2, op); } + do - ++i; - while (i < NUMOPCODES - && (alpha_opcodes[i].name == name - || !strcmp (alpha_opcodes[i].name, name))); + op++; + while (op < end + && (op->name == name + || !strcmp (op->name, name))); } +} +/* This function is called once, at assembler startup time. It should + set up all the tables, etc. that the MD part of the assembler will + need, that can be determined before arguments are parsed. */ +void +md_begin () +{ + const char *retval; + int lose = 0; + unsigned int i = 0; - if (lose) - as_fatal ("Broken assembler. No assembly attempted."); + op_hash = hash_new (); + load_insn_table (alpha_opcodes, NUMOPCODES); + + /* Default to 21064 PAL instructions. */ + if (machine == 0) + machine = 21064; + + switch (machine) + { + case 21064: + case 21066: + load_insn_table (alpha_pal21064_opcodes, NUM21064OPCODES); + break; + case 21164: + load_insn_table (alpha_pal21164_opcodes, NUM21164OPCODES); + break; + default: + as_fatal ("palcode set unknown (internal error)"); + } lituse_basereg.X_op = O_constant; lituse_basereg.X_add_number = 1; @@ -569,12 +601,48 @@ md_begin () int optnum = 1; +static void +emit_insn (insn) + struct alpha_it *insn; +{ + char *toP; + int j; + + toP = frag_more (4); + + /* put out the opcode */ + md_number_to_chars (toP, insn->opcode, 4); + + /* put out the symbol-dependent stuff */ + for (j = 0; j < MAX_RELOCS; j++) + { + struct reloc_data *r = &insn->reloc[j]; + fixS *f; + + if (r->code != BFD_RELOC_NONE) + { + if (r->exp.X_op == O_constant) + { + r->exp.X_add_symbol = section_symbol (absolute_section); + r->exp.X_op = O_symbol; + } + f = fix_new_exp (frag_now, (toP - frag_now->fr_literal), 4, + &r->exp, r->pcrel, r->code); + } + if (r->code == BFD_RELOC_ALPHA_GPDISP_LO16) + { + static bit_fixS cookie; + /* @@ This'll make the range checking in write.c shut up. */ + f->fx_bit_fixP = &cookie; + } + } +} + void md_assemble (str) char *str; { - char *toP; - int i, j, count; + int i, count; #define MAX_INSNS 5 struct alpha_it insns[MAX_INSNS]; @@ -583,36 +651,7 @@ md_assemble (str) return; for (i = 0; i < count; i++) - { - toP = frag_more (4); - - /* put out the opcode */ - md_number_to_chars (toP, insns[i].opcode, 4); - - /* put out the symbol-dependent stuff */ - for (j = 0; j < MAX_RELOCS; j++) - { - struct reloc_data *r = &insns[i].reloc[j]; - fixS *f; - - if (r->code != BFD_RELOC_NONE) - { - if (r->exp.X_op == O_constant) - { - r->exp.X_add_symbol = section_symbol (absolute_section); - r->exp.X_op = O_symbol; - } - f = fix_new_exp (frag_now, (toP - frag_now->fr_literal), 4, - &r->exp, r->pcrel, r->code); - } - if (r->code == BFD_RELOC_ALPHA_GPDISP_LO16) - { - static bit_fixS cookie; - /* This'll make the range checking in write.c shut up. */ - f->fx_bit_fixP = &cookie; - } - } - } + emit_insn (&insns[i]); } static inline void @@ -672,6 +711,7 @@ alpha_force_relocation (f) case BFD_RELOC_8: case BFD_RELOC_23_PCREL_S2: case BFD_RELOC_14: + case BFD_RELOC_26: return 0; default: abort (); @@ -712,13 +752,11 @@ md_section_align (seg, size) } /* Add this thing to the .lita section and produce a LITERAL reloc referring - to it. + to it. */ - TODO: - Remove duplicates. - Set GP value properly, and have values in LITERAL references set - accordingly. - */ +/* Are we currently eligible to emit a LITUSE reloc for the literal + references just generated? */ +static int lituse_pending; static void load_symbol_address (reg, insn) @@ -749,6 +787,7 @@ load_symbol_address (reg, insn) insn->reloc[0].exp.X_add_symbol = lita_sym; insn->reloc[0].exp.X_add_number = retval; insn->reloc[0].code = BFD_RELOC_ALPHA_LITERAL; + lituse_pending = 1; if (retval == 0x8000) /* Overflow? */ @@ -815,6 +854,7 @@ load_expression (reg, insn) | (addend & 0xffff)); insn[1].reloc[0].code = BFD_RELOC_ALPHA_LITUSE; insn[1].reloc[0].exp = lituse_basereg; + lituse_pending = 0; } return num_insns; } @@ -878,6 +918,80 @@ getExpression (str, this_insn) input_line_pointer = save_in; } +/* All of these should soon be changed to just emit words to the + output frag... */ +static void +emit_unaligned_io (dir, addr_reg, addr_offset, reg) + char *dir; + int addr_reg, reg; + valueT addr_offset; +{ + char buf[90]; + sprintf (buf, "%sq_u $%d,%ld($%d)", dir, reg, (long) addr_offset, addr_reg); + md_assemble (buf); +} + +static void +emit_load_unal (addr_reg, addr_offset, reg) + int addr_reg, reg; + valueT addr_offset; +{ + emit_unaligned_io ("ld", addr_reg, addr_offset, reg); +} + +static void +emit_store_unal (addr_reg, addr_offset, reg) + int addr_reg, reg; + valueT addr_offset; +{ + emit_unaligned_io ("st", addr_reg, addr_offset, reg); +} + +static void +emit_byte_manip_r (op, in, mask, out, mode, which) + char *op; +{ + char buf[90]; + sprintf (buf, "%s%c%c $%d,$%d,$%d", op, mode, which, in, mask, out); + md_assemble (buf); +} + +static void +emit_extract_r (in, mask, out, mode, which) +{ + emit_byte_manip_r ("ext", in, mask, out, mode, which); +} + +static void +emit_insert_r (in, mask, out, mode, which) +{ + emit_byte_manip_r ("ins", in, mask, out, mode, which); +} + +static void +emit_mask_r (in, mask, out, mode, which) +{ + emit_byte_manip_r ("msk", in, mask, out, mode, which); +} + +static void +emit_sign_extend (reg, size) +{ + char buf[90]; + sprintf (buf, "sll $%d,0x%x,$%d", reg, 64 - size, reg); + md_assemble (buf); + sprintf (buf, "sra $%d,0x%x,$%d", reg, 64 - size, reg); + md_assemble (buf); +} + +static void +emit_bis_r (in1, in2, out) +{ + char buf[90]; + sprintf (buf, "bis $%d,$%d,$%d", in1, in2, out); + md_assemble (buf); +} + /* Note that for now, this function is called recursively (by way of calling md_assemble again). Some of the macros defined as part of the assembly language are currently rewritten as sequences of @@ -1141,6 +1255,10 @@ alpha_ip (str, insns) insns[0].reloc[0].code = BFD_RELOC_8; goto immediate; + case 'I': /* 26 bit immediate, for PALcode */ + insns[0].reloc[0].code = BFD_RELOC_26; + goto immediate; + #if 0 case 't': /* 12 bit 0...11 */ insns[0].reloc = RELOC_0_12; @@ -1155,7 +1273,6 @@ alpha_ip (str, insns) #else case 't': case '8': - case 'I': abort (); #endif /*FALLTHROUGH*/ @@ -1257,8 +1374,12 @@ alpha_ip (str, insns) insns[0].reloc[0].exp.X_op = O_symbol; offset &= 0xffff; num_gen = load_expression (AT, &insns[0]); - insns[num_gen].reloc[0].code = BFD_RELOC_ALPHA_LITUSE; - insns[num_gen].reloc[0].exp = lituse_basereg; + if (lituse_pending) + { + insns[num_gen].reloc[0].code = BFD_RELOC_ALPHA_LITUSE; + insns[num_gen].reloc[0].exp = lituse_basereg; + lituse_pending = 0; + } insns[num_gen++].opcode = opcode | (AT << SB) | offset; opcode = insns[0].opcode; s = input_line_pointer; @@ -1342,15 +1463,23 @@ alpha_ip (str, insns) tmp_reg = AT; num_gen = load_expression (tmp_reg, insns); opcode = insns[0].opcode; - /* lda is opcode 8, 0x20000000 */ - if (OPCODE (old_opcode) != 0x08) + /* lda is opcode 8, 0x20000000, and the macros that use + this code have an opcode field of 0. The latter + require further processing, and we don't have the + true opcode here. */ + if (OPCODE (old_opcode) != 0 + && OPCODE (old_opcode) != 0x08) { struct alpha_it *i; i = &insns[num_gen++]; i->opcode = old_opcode | (tmp_reg << SB); - i->reloc[0].code = BFD_RELOC_ALPHA_LITUSE; - i->reloc[0].exp = lituse_basereg; + if (lituse_pending) + { + i->reloc[0].code = BFD_RELOC_ALPHA_LITUSE; + i->reloc[0].exp = lituse_basereg; + lituse_pending = 0; + } } } else @@ -1422,7 +1551,8 @@ alpha_ip (str, insns) insns[1].opcode |= addend & 0xffff; insns[0].opcode |= ((addend >> 16) + (addend & 0x8000 ? 1 : 0)); - ecoff_set_gp_prolog_size (0); + if (r2 == PV) + ecoff_set_gp_prolog_size (0); } break; default: @@ -1468,12 +1598,13 @@ alpha_ip (str, insns) | (mask << SA) | (PV << SB) | 0); - if (num_gen == 2) + if (lituse_pending) { /* LITUSE wasn't emitted yet */ jsr->reloc[0].code = BFD_RELOC_ALPHA_LITUSE; jsr->reloc[0].exp = lituse_jsr; r = &jsr->reloc[1]; + lituse_pending = 0; } else r = &jsr->reloc[0]; @@ -1484,6 +1615,187 @@ alpha_ip (str, insns) } continue; + case 'd': + /* Sub-word loads and stores. We load the address into + $at, which might involve using the `P' parameter + processing too, then emit a sequence to get the job + done, using unaligned memory accesses and byte + manipulation, with t9 and t10 as temporaries. */ + { + /* Characteristics of access. */ + int is_load, is_unsigned = 0, is_unaligned = 0; + int mode_size, mode; + /* Register operand. */ + int reg; + /* Addend for loads and stores. */ + valueT addend; + /* Which register do we use for the address? */ + int addr; + + { + /* Pick apart name and set flags. */ + char *s = pattern->name; + + if (*s == 'u') + { + is_unaligned = 1; + s++; + } + + if (s[0] == 'l' && s[1] == 'd') + is_load = 1; + else if (s[0] == 's' && s[1] == 't') + is_load = 0; + else + as_fatal ("unrecognized sub-word access insn `%s'", + str); + s += 2; + + mode = *s++; + if (mode == 'b') mode_size = 1; + else if (mode == 'w') mode_size = 2; + else if (mode == 'l') mode_size = 4; + else if (mode == 'q') mode_size = 8; + else abort (); + + if (*s == 'u') + { + is_unsigned = 1; + s++; + } + + assert (*s == 0); + + /* Longwords are always kept sign-extended. */ + if (mode == 'l' && is_unsigned) + abort (); + /* There's no special unaligned byte handling. */ + if (mode == 'b' && is_unaligned) + abort (); + /* Stores don't care about signedness. */ + if (!is_load && is_unsigned) + abort (); + } + + if (args[-2] == 'P') + { + addr = AT; + addend = 0; + } + else + { + /* foo r1,num(r2) + r2 -> mask + r1 -> (opcode >> SA) & 31 + num -> insns->reloc[0].* + + We want to emit "lda at,num(r2)", since these + operations require the use of a single register + with the starting address of the memory operand + we want to access. + + We could probably get away without doing this + (and use r2 below, with the addend for the + actual reads and writes) in cases where the + addend is known to be a multiple of 8. */ + int r2 = mask; + int r1 = (opcode >> SA) & 31; + + if (insns[0].reloc[0].code == BFD_RELOC_NONE) + addend = 0; + else if (insns[0].reloc[0].code == BFD_RELOC_16) + { + if (insns[0].reloc[0].exp.X_op != O_constant) + abort (); + addend = insns[0].reloc[0].exp.X_add_number; + } + else + abort (); + + if (addend + mode_size - 1 < 0x7fff + && (addend % 8) == 0 + && (r2 < T9 || r2 > T12)) + { + addr = r2; + num_gen = 0; + } + else + { + /* Let later relocation processing deal + with the addend field. */ + insns[num_gen-1].opcode = (0x20000000 /* lda */ + | (AT << SA) + | (r2 << SB)); + addr = AT; + addend = 0; + } + reg = r1; + } + + /* Because the emit_* routines append directly to + the current frag, we now need to flush any + pending insns. */ + { + int i; + for (i = 0; i < num_gen; i++) + emit_insn (&insns[i]); + num_gen = 0; + } + + if (is_load) + { + int reg2, reg3; + + if (is_unaligned) + reg2 = T9, reg3 = T10; + else + reg2 = reg; + + emit_load_unal (addr, addend, T9); + if (is_unaligned) + emit_load_unal (addr, addend + mode_size - 1, T10); + emit_extract_r (T9, addr, reg2, mode, 'l'); + if (is_unaligned) + { + emit_extract_r (T10, addr, reg3, mode, 'h'); + emit_bis_r (T9, T10, reg); + } + if (!is_unsigned) + emit_sign_extend (reg, mode_size * 8); + } + else + { + /* The second word gets processed first + because if the address does turn out to be + aligned, the processing for the second word + will be pushing around all-zeros, and the + entire value will be handled as the `first' + word. So we want to store the `first' word + last. */ + /* Pair these up so that the memory loads get + separated from each other, as well as being + well in advance of the uses of the values + loaded. */ + if (is_unaligned) + { + emit_load_unal (addr, addend + mode_size - 1, T11); + emit_insert_r (reg, addr, T12, mode, 'h'); + } + emit_load_unal (addr, addend, T9); + emit_insert_r (reg, addr, T10, mode, 'l'); + if (is_unaligned) + emit_mask_r (T12, addr, T12, mode, 'h'); + emit_mask_r (T10, addr, T10, mode, 'l'); + if (is_unaligned) + emit_bis_r (T11, T12, T11); + emit_bis_r (T9, T10, T9); + if (is_unaligned) + emit_store_unal (addr, addend + mode_size - 1, T11); + emit_store_unal (addr, addend, T9); + } + } + return 0; + /* DIVISION and MODULUS. Yech. Convert OP x,y,result to mov x,t10 @@ -1733,6 +2045,34 @@ md_parse_option (argP, cntP, vecP) *argP += 5; return 1; } + if (**argP == 'm') + { + unsigned long mach; + + (*argP)++; + if (!strcmp (*argP, "21064")) + mach = 21064; + else if (!strcmp (*argP, "21066")) + mach = 21066; + else if (!strcmp (*argP, "21164")) + mach = 21164; + else + { + mach = 0; + (*argP)--; + return 0; + } + (*argP) += 5; + + if (machine != 0 && machine != mach) + { + as_warn ("machine type %lu already chosen, overriding with %lu", + machine, mach); + } + machine = mach; + + return 1; + } return 0; } @@ -1921,6 +2261,28 @@ md_apply_fix (fixP, valueP) } break; + case BFD_RELOC_26: + if (fixP->fx_addsy != 0 + && fixP->fx_addsy->bsym->section != absolute_section) + as_bad_where (fixP->fx_file, fixP->fx_line, + "PALcode instructions require immediate constant function code"); + else if (value >> 26 != 0) + as_bad_where (fixP->fx_file, fixP->fx_line, + "overflow in 26-bit PALcode function field"); + *p++ = value & 0xff; + value >>= 8; + *p++ = value & 0xff; + value >>= 8; + *p++ = value & 0xff; + value >>= 8; + { + char x = *p; + x &= ~3; + x |= (value & 3); + *p++ = x; + } + goto done; + case BFD_RELOC_14: if (fixP->fx_addsy != 0 && fixP->fx_addsy->bsym->section != absolute_section) |