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Diffstat (limited to 'gas/config/tc-sparc.c')
| -rw-r--r-- | gas/config/tc-sparc.c | 3551 |
1 files changed, 3551 insertions, 0 deletions
diff --git a/gas/config/tc-sparc.c b/gas/config/tc-sparc.c new file mode 100644 index 0000000..1518a8a --- /dev/null +++ b/gas/config/tc-sparc.c @@ -0,0 +1,3551 @@ +/* tc-sparc.c -- Assemble for the SPARC + Copyright (C) 1989, 90-96, 97, 1998 Free Software Foundation, Inc. + This file is part of GAS, the GNU Assembler. + + GAS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + GAS is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public + License along with GAS; see the file COPYING. If not, write + to the Free Software Foundation, 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <stdio.h> +#include <ctype.h> + +#include "as.h" +#include "subsegs.h" + +#include "opcode/sparc.h" + +#ifdef OBJ_ELF +#include "elf/sparc.h" +#endif + +static struct sparc_arch *lookup_arch PARAMS ((char *)); +static void init_default_arch PARAMS ((void)); +static void sparc_ip PARAMS ((char *, const struct sparc_opcode **)); +static int in_signed_range PARAMS ((bfd_signed_vma, bfd_signed_vma)); +static int in_unsigned_range PARAMS ((bfd_vma, bfd_vma)); +static int in_bitfield_range PARAMS ((bfd_signed_vma, bfd_signed_vma)); +static int sparc_ffs PARAMS ((unsigned int)); +static bfd_vma BSR PARAMS ((bfd_vma, int)); +static int cmp_reg_entry PARAMS ((const PTR, const PTR)); +static int parse_keyword_arg PARAMS ((int (*) (const char *), char **, int *)); +static int parse_const_expr_arg PARAMS ((char **, int *)); +static int get_expression PARAMS ((char *str)); + +/* Default architecture. */ +/* ??? The default value should be V8, but sparclite support was added + by making it the default. GCC now passes -Asparclite, so maybe sometime in + the future we can set this to V8. */ +#ifndef DEFAULT_ARCH +#define DEFAULT_ARCH "sparclite" +#endif +static char *default_arch = DEFAULT_ARCH; + +/* Non-zero if the initial values of `max_architecture' and `sparc_arch_size' + have been set. */ +static int default_init_p; + +/* Current architecture. We don't bump up unless necessary. */ +static enum sparc_opcode_arch_val current_architecture = SPARC_OPCODE_ARCH_V6; + +/* The maximum architecture level we can bump up to. + In a 32 bit environment, don't allow bumping up to v9 by default. + The native assembler works this way. The user is required to pass + an explicit argument before we'll create v9 object files. However, if + we don't see any v9 insns, a v8plus object file is not created. */ +static enum sparc_opcode_arch_val max_architecture; + +/* Either 32 or 64, selects file format. */ +static int sparc_arch_size; +/* Initial (default) value, recorded separately in case a user option + changes the value before md_show_usage is called. */ +static int default_arch_size; + +#ifdef OBJ_ELF +/* The currently selected v9 memory model. Currently only used for + ELF. */ +static enum { MM_TSO, MM_PSO, MM_RMO } sparc_memory_model = MM_RMO; +#endif + +static int architecture_requested; +static int warn_on_bump; + +/* If warn_on_bump and the needed architecture is higher than this + architecture, issue a warning. */ +static enum sparc_opcode_arch_val warn_after_architecture; + +/* Non-zero if we are generating PIC code. */ +int sparc_pic_code; + +/* Non-zero if we should give an error when misaligned data is seen. */ +static int enforce_aligned_data; + +extern int target_big_endian; + +static int target_little_endian_data; + +/* V9 and 86x have big and little endian data, but instructions are always big + endian. The sparclet has bi-endian support but both data and insns have + the same endianness. Global `target_big_endian' is used for data. + The following macro is used for instructions. */ +#ifndef INSN_BIG_ENDIAN +#define INSN_BIG_ENDIAN (target_big_endian \ + || default_arch_type == sparc86x \ + || SPARC_OPCODE_ARCH_V9_P (max_architecture)) +#endif + +/* handle of the OPCODE hash table */ +static struct hash_control *op_hash; + +static int log2 PARAMS ((int)); +static void s_data1 PARAMS ((void)); +static void s_seg PARAMS ((int)); +static void s_proc PARAMS ((int)); +static void s_reserve PARAMS ((int)); +static void s_common PARAMS ((int)); +static void s_empty PARAMS ((int)); +static void s_uacons PARAMS ((int)); + +const pseudo_typeS md_pseudo_table[] = +{ + {"align", s_align_bytes, 0}, /* Defaulting is invalid (0) */ + {"common", s_common, 0}, + {"empty", s_empty, 0}, + {"global", s_globl, 0}, + {"half", cons, 2}, + {"optim", s_ignore, 0}, + {"proc", s_proc, 0}, + {"reserve", s_reserve, 0}, + {"seg", s_seg, 0}, + {"skip", s_space, 0}, + {"word", cons, 4}, + {"xword", cons, 8}, + {"uahalf", s_uacons, 2}, + {"uaword", s_uacons, 4}, + {"uaxword", s_uacons, 8}, +#ifdef OBJ_ELF + /* these are specific to sparc/svr4 */ + {"pushsection", obj_elf_section, 0}, + {"popsection", obj_elf_previous, 0}, + {"2byte", s_uacons, 2}, + {"4byte", s_uacons, 4}, + {"8byte", s_uacons, 8}, +#endif + {NULL, 0, 0}, +}; + +const int md_reloc_size = 12; /* Size of relocation record */ + +/* This array holds the chars that always start a comment. If the + pre-processor is disabled, these aren't very useful */ +const char comment_chars[] = "!"; /* JF removed '|' from comment_chars */ + +/* This array holds the chars that only start a comment at the beginning of + a line. If the line seems to have the form '# 123 filename' + .line and .file directives will appear in the pre-processed output */ +/* Note that input_file.c hand checks for '#' at the beginning of the + first line of the input file. This is because the compiler outputs + #NO_APP at the beginning of its output. */ +/* Also note that comments started like this one will always + work if '/' isn't otherwise defined. */ +const char line_comment_chars[] = "#"; + +const char line_separator_chars[] = ""; + +/* Chars that can be used to separate mant from exp in floating point nums */ +const char EXP_CHARS[] = "eE"; + +/* Chars that mean this number is a floating point constant */ +/* As in 0f12.456 */ +/* or 0d1.2345e12 */ +const char FLT_CHARS[] = "rRsSfFdDxXpP"; + +/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be + changed in read.c. Ideally it shouldn't have to know about it at all, + but nothing is ideal around here. */ + +static unsigned char octal[256]; +#define isoctal(c) octal[(unsigned char) (c)] +static unsigned char toHex[256]; + +struct sparc_it + { + char *error; + unsigned long opcode; + struct nlist *nlistp; + expressionS exp; + int pcrel; + bfd_reloc_code_real_type reloc; + }; + +struct sparc_it the_insn, set_insn; + +static void output_insn + PARAMS ((const struct sparc_opcode *, struct sparc_it *)); + +/* Table of arguments to -A. + The sparc_opcode_arch table in sparc-opc.c is insufficient and incorrect + for this use. That table is for opcodes only. This table is for opcodes + and file formats. */ + +enum sparc_arch_types {v6, v7, v8, sparclet, sparclite, sparc86x, v8plus, + v8plusa, v9, v9a, v9_64}; + +static struct sparc_arch { + char *name; + char *opcode_arch; + enum sparc_arch_types arch_type; + /* Default word size, as specified during configuration. + A value of zero means can't be used to specify default architecture. */ + int default_arch_size; + /* Allowable arg to -A? */ + int user_option_p; +} sparc_arch_table[] = { + { "v6", "v6", v6, 0, 1 }, + { "v7", "v7", v7, 0, 1 }, + { "v8", "v8", v8, 32, 1 }, + { "sparclet", "sparclet", sparclet, 32, 1 }, + { "sparclite", "sparclite", sparclite, 32, 1 }, + { "sparc86x", "sparclite", sparc86x, 32, 1 }, + { "v8plus", "v9", v9, 0, 1 }, + { "v8plusa", "v9a", v9, 0, 1 }, + { "v9", "v9", v9, 0, 1 }, + { "v9a", "v9a", v9, 0, 1 }, + /* This exists to allow configure.in/Makefile.in to pass one + value to specify both the default machine and default word size. */ + { "v9-64", "v9", v9, 64, 0 }, + { NULL, NULL, v8, 0, 0 } +}; + +/* Variant of default_arch */ +static enum sparc_arch_types default_arch_type; + +static struct sparc_arch * +lookup_arch (name) + char *name; +{ + struct sparc_arch *sa; + + for (sa = &sparc_arch_table[0]; sa->name != NULL; sa++) + if (strcmp (sa->name, name) == 0) + break; + if (sa->name == NULL) + return NULL; + return sa; +} + +/* Initialize the default opcode arch and word size from the default + architecture name. */ + +static void +init_default_arch () +{ + struct sparc_arch *sa = lookup_arch (default_arch); + + if (sa == NULL + || sa->default_arch_size == 0) + as_fatal (_("Invalid default architecture, broken assembler.")); + + max_architecture = sparc_opcode_lookup_arch (sa->opcode_arch); + if (max_architecture == SPARC_OPCODE_ARCH_BAD) + as_fatal (_("Bad opcode table, broken assembler.")); + default_arch_size = sparc_arch_size = sa->default_arch_size; + default_init_p = 1; + default_arch_type = sa->arch_type; +} + +/* Called by TARGET_FORMAT. */ + +const char * +sparc_target_format () +{ + /* We don't get a chance to initialize anything before we're called, + so handle that now. */ + if (! default_init_p) + init_default_arch (); + +#ifdef OBJ_AOUT +#ifdef TE_NetBSD + return "a.out-sparc-netbsd"; +#else +#ifdef TE_SPARCAOUT + if (target_big_endian) + return "a.out-sunos-big"; + else if (default_arch_type == sparc86x && target_little_endian_data) + return "a.out-sunos-big"; + else return "a.out-sparc-little"; +#else + return "a.out-sunos-big"; +#endif +#endif +#endif + +#ifdef OBJ_BOUT + return "b.out.big"; +#endif + +#ifdef OBJ_COFF +#ifdef TE_LYNX + return "coff-sparc-lynx"; +#else + return "coff-sparc"; +#endif +#endif + +#ifdef OBJ_ELF + return sparc_arch_size == 64 ? "elf64-sparc" : "elf32-sparc"; +#endif + + abort (); +} + +/* + * md_parse_option + * Invocation line includes a switch not recognized by the base assembler. + * See if it's a processor-specific option. These are: + * + * -bump + * Warn on architecture bumps. See also -A. + * + * -Av6, -Av7, -Av8, -Asparclite, -Asparclet + * Standard 32 bit architectures. + * -Av8plus, -Av8plusa + * Sparc64 in a 32 bit world. + * -Av9, -Av9a + * Sparc64 in either a 32 or 64 bit world (-32/-64 says which). + * This used to only mean 64 bits, but properly specifying it + * complicated gcc's ASM_SPECs, so now opcode selection is + * specified orthogonally to word size (except when specifying + * the default, but that is an internal implementation detail). + * -xarch=v8plus, -xarch=v8plusa + * Same as -Av8plus{,a}, for compatibility with Sun's assembler. + * + * Select the architecture and possibly the file format. + * Instructions or features not supported by the selected + * architecture cause fatal errors. + * + * The default is to start at v6, and bump the architecture up + * whenever an instruction is seen at a higher level. In 32 bit + * environments, v9 is not bumped up to, the user must pass + * -Av8plus{,a}. + * + * If -bump is specified, a warning is printing when bumping to + * higher levels. + * + * If an architecture is specified, all instructions must match + * that architecture. Any higher level instructions are flagged + * as errors. Note that in the 32 bit environment specifying + * -Av8plus does not automatically create a v8plus object file, a + * v9 insn must be seen. + * + * If both an architecture and -bump are specified, the + * architecture starts at the specified level, but bumps are + * warnings. Note that we can't set `current_architecture' to + * the requested level in this case: in the 32 bit environment, + * we still must avoid creating v8plus object files unless v9 + * insns are seen. + * + * Note: + * Bumping between incompatible architectures is always an + * error. For example, from sparclite to v9. + */ + +#ifdef OBJ_ELF +CONST char *md_shortopts = "A:K:VQ:sq"; +#else +#ifdef OBJ_AOUT +CONST char *md_shortopts = "A:k"; +#else +CONST char *md_shortopts = "A:"; +#endif +#endif +struct option md_longopts[] = { +#define OPTION_BUMP (OPTION_MD_BASE) + {"bump", no_argument, NULL, OPTION_BUMP}, +#define OPTION_SPARC (OPTION_MD_BASE + 1) + {"sparc", no_argument, NULL, OPTION_SPARC}, +#define OPTION_XARCH (OPTION_MD_BASE + 2) + {"xarch", required_argument, NULL, OPTION_XARCH}, +#ifdef OBJ_ELF +#define OPTION_32 (OPTION_MD_BASE + 3) + {"32", no_argument, NULL, OPTION_32}, +#define OPTION_64 (OPTION_MD_BASE + 4) + {"64", no_argument, NULL, OPTION_64}, +#define OPTION_TSO (OPTION_MD_BASE + 5) + {"TSO", no_argument, NULL, OPTION_TSO}, +#define OPTION_PSO (OPTION_MD_BASE + 6) + {"PSO", no_argument, NULL, OPTION_PSO}, +#define OPTION_RMO (OPTION_MD_BASE + 7) + {"RMO", no_argument, NULL, OPTION_RMO}, +#endif +#ifdef SPARC_BIENDIAN +#define OPTION_LITTLE_ENDIAN (OPTION_MD_BASE + 8) + {"EL", no_argument, NULL, OPTION_LITTLE_ENDIAN}, +#define OPTION_BIG_ENDIAN (OPTION_MD_BASE + 9) + {"EB", no_argument, NULL, OPTION_BIG_ENDIAN}, +#endif +#define OPTION_ENFORCE_ALIGNED_DATA (OPTION_MD_BASE + 10) + {"enforce-aligned-data", no_argument, NULL, OPTION_ENFORCE_ALIGNED_DATA}, +#define OPTION_LITTLE_ENDIAN_DATA (OPTION_MD_BASE + 11) + {"little-endian-data", no_argument, NULL, OPTION_LITTLE_ENDIAN_DATA}, + {NULL, no_argument, NULL, 0} +}; +size_t md_longopts_size = sizeof(md_longopts); + +int +md_parse_option (c, arg) + int c; + char *arg; +{ + /* We don't get a chance to initialize anything before we're called, + so handle that now. */ + if (! default_init_p) + init_default_arch (); + + switch (c) + { + case OPTION_BUMP: + warn_on_bump = 1; + warn_after_architecture = SPARC_OPCODE_ARCH_V6; + break; + + case OPTION_XARCH: + /* This is for compatibility with Sun's assembler. */ + if (strcmp (arg, "v8plus") != 0 + && strcmp (arg, "v8plusa") != 0) + { + as_bad (_("invalid architecture -xarch=%s"), arg); + return 0; + } + + /* fall through */ + + case 'A': + { + struct sparc_arch *sa; + enum sparc_opcode_arch_val opcode_arch; + + sa = lookup_arch (arg); + if (sa == NULL + || ! sa->user_option_p) + { + as_bad (_("invalid architecture -A%s"), arg); + return 0; + } + + opcode_arch = sparc_opcode_lookup_arch (sa->opcode_arch); + if (opcode_arch == SPARC_OPCODE_ARCH_BAD) + as_fatal (_("Bad opcode table, broken assembler.")); + + max_architecture = opcode_arch; + architecture_requested = 1; + } + break; + + case OPTION_SPARC: + /* Ignore -sparc, used by SunOS make default .s.o rule. */ + break; + + case OPTION_ENFORCE_ALIGNED_DATA: + enforce_aligned_data = 1; + break; + +#ifdef SPARC_BIENDIAN + case OPTION_LITTLE_ENDIAN: + target_big_endian = 0; + if (default_arch_type != sparclet) + as_fatal ("This target does not support -EL"); + break; + case OPTION_LITTLE_ENDIAN_DATA: + target_little_endian_data = 1; + target_big_endian = 0; + if (default_arch_type != sparc86x + && default_arch_type != v9) + as_fatal ("This target does not support --little-endian-data"); + break; + case OPTION_BIG_ENDIAN: + target_big_endian = 1; + break; +#endif + +#ifdef OBJ_AOUT + case 'k': + sparc_pic_code = 1; + break; +#endif + +#ifdef OBJ_ELF + case OPTION_32: + case OPTION_64: + { + const char **list, **l; + + sparc_arch_size = c == OPTION_32 ? 32 : 64; + list = bfd_target_list (); + for (l = list; *l != NULL; l++) + { + if (sparc_arch_size == 32) + { + if (strcmp (*l, "elf32-sparc") == 0) + break; + } + else + { + if (strcmp (*l, "elf64-sparc") == 0) + break; + } + } + if (*l == NULL) + as_fatal (_("No compiled in support for %d bit object file format"), + sparc_arch_size); + free (list); + } + break; + + case OPTION_TSO: + sparc_memory_model = MM_TSO; + break; + + case OPTION_PSO: + sparc_memory_model = MM_PSO; + break; + + case OPTION_RMO: + sparc_memory_model = MM_RMO; + break; + + case 'V': + print_version_id (); + break; + + case 'Q': + /* Qy - do emit .comment + Qn - do not emit .comment */ + break; + + case 's': + /* use .stab instead of .stab.excl */ + break; + + case 'q': + /* quick -- native assembler does fewer checks */ + break; + + case 'K': + if (strcmp (arg, "PIC") != 0) + as_warn (_("Unrecognized option following -K")); + else + sparc_pic_code = 1; + break; +#endif + + default: + return 0; + } + + return 1; +} + +void +md_show_usage (stream) + FILE *stream; +{ + const struct sparc_arch *arch; + + /* We don't get a chance to initialize anything before we're called, + so handle that now. */ + if (! default_init_p) + init_default_arch (); + + fprintf(stream, _("SPARC options:\n")); + for (arch = &sparc_arch_table[0]; arch->name; arch++) + { + if (arch != &sparc_arch_table[0]) + fprintf (stream, " | "); + if (arch->user_option_p) + fprintf (stream, "-A%s", arch->name); + } + fprintf (stream, _("\n-xarch=v8plus | -xarch=v8plusa\n")); + fprintf (stream, _("\ + specify variant of SPARC architecture\n\ +-bump warn when assembler switches architectures\n\ +-sparc ignored\n\ +--enforce-aligned-data force .long, etc., to be aligned correctly\n")); +#ifdef OBJ_AOUT + fprintf (stream, _("\ +-k generate PIC\n")); +#endif +#ifdef OBJ_ELF + fprintf (stream, _("\ +-32 create 32 bit object file\n\ +-64 create 64 bit object file\n")); + fprintf (stream, _("\ + [default is %d]\n"), default_arch_size); + fprintf (stream, _("\ +-TSO use Total Store Ordering\n\ +-PSO use Partial Store Ordering\n\ +-RMO use Relaxed Memory Ordering\n")); + fprintf (stream, _("\ + [default is %s]\n"), (default_arch_size == 64) ? "RMO" : "TSO"); + fprintf (stream, _("\ +-KPIC generate PIC\n\ +-V print assembler version number\n\ +-q ignored\n\ +-Qy, -Qn ignored\n\ +-s ignored\n")); +#endif +#ifdef SPARC_BIENDIAN + fprintf (stream, _("\ +-EL generate code for a little endian machine\n\ +-EB generate code for a big endian machine\n\ +--little-endian-data generate code for a machine having big endian\n\ + instructions and little endian data.")); +#endif +} + +/* sparc64 priviledged registers */ + +struct priv_reg_entry + { + char *name; + int regnum; + }; + +struct priv_reg_entry priv_reg_table[] = +{ + {"tpc", 0}, + {"tnpc", 1}, + {"tstate", 2}, + {"tt", 3}, + {"tick", 4}, + {"tba", 5}, + {"pstate", 6}, + {"tl", 7}, + {"pil", 8}, + {"cwp", 9}, + {"cansave", 10}, + {"canrestore", 11}, + {"cleanwin", 12}, + {"otherwin", 13}, + {"wstate", 14}, + {"fq", 15}, + {"ver", 31}, + {"", -1}, /* end marker */ +}; + +/* v9a specific asrs */ + +struct priv_reg_entry v9a_asr_table[] = +{ + {"tick_cmpr", 23}, + {"softint", 22}, + {"set_softint", 20}, + {"pic", 17}, + {"pcr", 16}, + {"gsr", 19}, + {"dcr", 18}, + {"clear_softint", 21}, + {"", -1}, /* end marker */ +}; + +static int +cmp_reg_entry (parg, qarg) + const PTR parg; + const PTR qarg; +{ + const struct priv_reg_entry *p = (const struct priv_reg_entry *) parg; + const struct priv_reg_entry *q = (const struct priv_reg_entry *) qarg; + + return strcmp (q->name, p->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. */ + +void +md_begin () +{ + register const char *retval = NULL; + int lose = 0; + register unsigned int i = 0; + + /* We don't get a chance to initialize anything before md_parse_option + is called, and it may not be called, so handle default initialization + now if not already done. */ + if (! default_init_p) + init_default_arch (); + + op_hash = hash_new (); + + while (i < (unsigned int) sparc_num_opcodes) + { + const char *name = sparc_opcodes[i].name; + retval = hash_insert (op_hash, name, (PTR) &sparc_opcodes[i]); + if (retval != NULL) + { + fprintf (stderr, _("internal error: can't hash `%s': %s\n"), + sparc_opcodes[i].name, retval); + lose = 1; + } + do + { + if (sparc_opcodes[i].match & sparc_opcodes[i].lose) + { + fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"), + sparc_opcodes[i].name, sparc_opcodes[i].args); + lose = 1; + } + ++i; + } + while (i < (unsigned int) sparc_num_opcodes + && !strcmp (sparc_opcodes[i].name, name)); + } + + if (lose) + as_fatal (_("Broken assembler. No assembly attempted.")); + + for (i = '0'; i < '8'; ++i) + octal[i] = 1; + for (i = '0'; i <= '9'; ++i) + toHex[i] = i - '0'; + for (i = 'a'; i <= 'f'; ++i) + toHex[i] = i + 10 - 'a'; + for (i = 'A'; i <= 'F'; ++i) + toHex[i] = i + 10 - 'A'; + + qsort (priv_reg_table, sizeof (priv_reg_table) / sizeof (priv_reg_table[0]), + sizeof (priv_reg_table[0]), cmp_reg_entry); + + /* If -bump, record the architecture level at which we start issuing + warnings. The behaviour is different depending upon whether an + architecture was explicitly specified. If it wasn't, we issue warnings + for all upwards bumps. If it was, we don't start issuing warnings until + we need to bump beyond the requested architecture or when we bump between + conflicting architectures. */ + + if (warn_on_bump + && architecture_requested) + { + /* `max_architecture' records the requested architecture. + Issue warnings if we go above it. */ + warn_after_architecture = max_architecture; + + /* Find the highest architecture level that doesn't conflict with + the requested one. */ + for (max_architecture = SPARC_OPCODE_ARCH_MAX; + max_architecture > warn_after_architecture; + --max_architecture) + if (! SPARC_OPCODE_CONFLICT_P (max_architecture, + warn_after_architecture)) + break; + } +} + +/* Called after all assembly has been done. */ + +void +sparc_md_end () +{ + if (sparc_arch_size == 64) + { + if (current_architecture == SPARC_OPCODE_ARCH_V9A) + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_v9a); + else + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_v9); + } + else + { + if (current_architecture == SPARC_OPCODE_ARCH_V9) + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_v8plus); + else if (current_architecture == SPARC_OPCODE_ARCH_V9A) + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_v8plusa); + else if (current_architecture == SPARC_OPCODE_ARCH_SPARCLET) + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_sparclet); + else if (default_arch_type == sparc86x && target_little_endian_data) + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_sparclite_le); + else + { + /* The sparclite is treated like a normal sparc. Perhaps it shouldn't + be but for now it is (since that's the way it's always been + treated). */ + bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc); + } + } +} + +/* Return non-zero if VAL is in the range -(MAX+1) to MAX. */ + +static INLINE int +in_signed_range (val, max) + bfd_signed_vma val, max; +{ + if (max <= 0) + abort (); + /* Sign-extend the value from the architecture word size, so that + 0xffffffff is always considered -1 on sparc32. */ + if (sparc_arch_size == 32) + { + bfd_signed_vma sign = (bfd_signed_vma)1 << 31; + val = ((val & 0xffffffff) ^ sign) - sign; + } + if (val > max) + return 0; + if (val < ~max) + return 0; + return 1; +} + +/* Return non-zero if VAL is in the range 0 to MAX. */ + +static INLINE int +in_unsigned_range (val, max) + bfd_vma val, max; +{ + if (val > max) + return 0; + return 1; +} + +/* Return non-zero if VAL is in the range -(MAX/2+1) to MAX. + (e.g. -15 to +31). */ + +static INLINE int +in_bitfield_range (val, max) + bfd_signed_vma val, max; +{ + if (max <= 0) + abort (); + if (val > max) + return 0; + if (val < ~(max >> 1)) + return 0; + return 1; +} + +static int +sparc_ffs (mask) + unsigned int mask; +{ + int i; + + if (mask == 0) + return -1; + + for (i = 0; (mask & 1) == 0; ++i) + mask >>= 1; + return i; +} + +/* Implement big shift right. */ +static bfd_vma +BSR (val, amount) + bfd_vma val; + int amount; +{ + if (sizeof (bfd_vma) <= 4 && amount >= 32) + as_fatal (_("Support for 64-bit arithmetic not compiled in.")); + return val >> amount; +} + +/* For communication between sparc_ip and get_expression. */ +static char *expr_end; + +/* For communication between md_assemble and sparc_ip. */ +static int special_case; + +/* Values for `special_case'. + Instructions that require wierd handling because they're longer than + 4 bytes. */ +#define SPECIAL_CASE_NONE 0 +#define SPECIAL_CASE_SET 1 +#define SPECIAL_CASE_SETSW 2 +#define SPECIAL_CASE_SETX 3 +/* FIXME: sparc-opc.c doesn't have necessary "S" trigger to enable this. */ +#define SPECIAL_CASE_FDIV 4 + +/* Bit masks of various insns. */ +#define NOP_INSN 0x01000000 +#define OR_INSN 0x80100000 +#define FMOVS_INSN 0x81A00020 +#define SETHI_INSN 0x01000000 +#define SLLX_INSN 0x81281000 +#define SRA_INSN 0x81380000 + +/* The last instruction to be assembled. */ +static const struct sparc_opcode *last_insn; +/* The assembled opcode of `last_insn'. */ +static unsigned long last_opcode; + +/* Main entry point to assemble one instruction. */ + +void +md_assemble (str) + char *str; +{ + const struct sparc_opcode *insn; + + know (str); + special_case = SPECIAL_CASE_NONE; + sparc_ip (str, &insn); + + /* We warn about attempts to put a floating point branch in a delay slot, + unless the delay slot has been annulled. */ + if (insn != NULL + && last_insn != NULL + && (insn->flags & F_FBR) != 0 + && (last_insn->flags & F_DELAYED) != 0 + /* ??? This test isn't completely accurate. We assume anything with + F_{UNBR,CONDBR,FBR} set is annullable. */ + && ((last_insn->flags & (F_UNBR | F_CONDBR | F_FBR)) == 0 + || (last_opcode & ANNUL) == 0)) + as_warn (_("FP branch in delay slot")); + + /* SPARC before v9 requires a nop instruction between a floating + point instruction and a floating point branch. We insert one + automatically, with a warning. */ + if (max_architecture < SPARC_OPCODE_ARCH_V9 + && insn != NULL + && last_insn != NULL + && (insn->flags & F_FBR) != 0 + && (last_insn->flags & F_FLOAT) != 0) + { + struct sparc_it nop_insn; + + nop_insn.opcode = NOP_INSN; + nop_insn.reloc = BFD_RELOC_NONE; + output_insn (insn, &nop_insn); + as_warn (_("FP branch preceded by FP instruction; NOP inserted")); + } + + switch (special_case) + { + case SPECIAL_CASE_NONE: + /* normal insn */ + output_insn (insn, &the_insn); + break; + + case SPECIAL_CASE_SET: + { + int need_hi22_p = 0; + + /* "set" is not defined for negative numbers in v9: it doesn't yield + what you expect it to. */ + if (SPARC_OPCODE_ARCH_V9_P (max_architecture) + && the_insn.exp.X_op == O_constant) + { + if (the_insn.exp.X_add_number < 0) + as_warn (_("set: used with negative number")); + else if (the_insn.exp.X_add_number > (offsetT) 0xffffffff) + as_warn (_("set: number larger than 4294967295")); + } + + /* See if operand is absolute and small; skip sethi if so. */ + if (the_insn.exp.X_op != O_constant + || the_insn.exp.X_add_number >= (1 << 12) + || the_insn.exp.X_add_number < -(1 << 12)) + { + output_insn (insn, &the_insn); + need_hi22_p = 1; + } + /* See if operand has no low-order bits; skip OR if so. */ + if (the_insn.exp.X_op != O_constant + || (need_hi22_p && (the_insn.exp.X_add_number & 0x3FF) != 0) + || ! need_hi22_p) + { + int rd = (the_insn.opcode & RD (~0)) >> 25; + the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (rd) : 0) + | RD (rd) + | IMMED + | (the_insn.exp.X_add_number + & (need_hi22_p ? 0x3ff : 0x1fff))); + the_insn.reloc = (the_insn.exp.X_op != O_constant + ? BFD_RELOC_LO10 + : BFD_RELOC_NONE); + output_insn (insn, &the_insn); + } + break; + } + + case SPECIAL_CASE_SETSW: + { + /* FIXME: Not finished. */ + break; + } + + case SPECIAL_CASE_SETX: + { +#define SIGNEXT32(x) ((((x) & 0xffffffff) ^ 0x80000000) - 0x80000000) + int upper32 = SIGNEXT32 (BSR (the_insn.exp.X_add_number, 32)); + int lower32 = SIGNEXT32 (the_insn.exp.X_add_number); +#undef SIGNEXT32 + int tmpreg = (the_insn.opcode & RS1 (~0)) >> 14; + int dstreg = (the_insn.opcode & RD (~0)) >> 25; + /* Output directly to dst reg if lower 32 bits are all zero. */ + int upper_dstreg = (the_insn.exp.X_op == O_constant + && lower32 == 0) ? dstreg : tmpreg; + int need_hh22_p = 0, need_hm10_p = 0, need_hi22_p = 0, need_lo10_p = 0; + + /* The tmp reg should not be the dst reg. */ + if (tmpreg == dstreg) + as_warn (_("setx: temporary register same as destination register")); + + /* Reset X_add_number, we've extracted it as upper32/lower32. + Otherwise fixup_segment will complain about not being able to + write an 8 byte number in a 4 byte field. */ + the_insn.exp.X_add_number = 0; + + /* ??? Obviously there are other optimizations we can do + (e.g. sethi+shift for 0x1f0000000) and perhaps we shouldn't be + doing some of these. Later. If you do change things, try to + change all of this to be table driven as well. */ + + /* What to output depends on the number if it's constant. + Compute that first, then output what we've decided upon. */ + if (the_insn.exp.X_op != O_constant) + need_hh22_p = need_hm10_p = need_hi22_p = need_lo10_p = 1; + else + { + /* Only need hh22 if `or' insn can't handle constant. */ + if (upper32 < -(1 << 12) || upper32 >= (1 << 12)) + need_hh22_p = 1; + + /* Does bottom part (after sethi) have bits? */ + if ((need_hh22_p && (upper32 & 0x3ff) != 0) + /* No hh22, but does upper32 still have bits we can't set + from lower32? */ + || (! need_hh22_p + && upper32 != 0 + && (upper32 != -1 || lower32 >= 0))) + need_hm10_p = 1; + + /* If the lower half is all zero, we build the upper half directly + into the dst reg. */ + if (lower32 != 0 + /* Need lower half if number is zero. */ + || (! need_hh22_p && ! need_hm10_p)) + { + /* No need for sethi if `or' insn can handle constant. */ + if (lower32 < -(1 << 12) || lower32 >= (1 << 12) + /* Note that we can't use a negative constant in the `or' + insn unless the upper 32 bits are all ones. */ + || (lower32 < 0 && upper32 != -1)) + need_hi22_p = 1; + + /* Does bottom part (after sethi) have bits? */ + if ((need_hi22_p && (lower32 & 0x3ff) != 0) + /* No sethi. */ + || (! need_hi22_p && (lower32 & 0x1fff) != 0) + /* Need `or' if we didn't set anything else. */ + || (! need_hi22_p && ! need_hh22_p && ! need_hm10_p)) + need_lo10_p = 1; + } + } + + if (need_hh22_p) + { + the_insn.opcode = (SETHI_INSN | RD (upper_dstreg) + | ((upper32 >> 10) & 0x3fffff)); + the_insn.reloc = (the_insn.exp.X_op != O_constant + ? BFD_RELOC_SPARC_HH22 : BFD_RELOC_NONE); + output_insn (insn, &the_insn); + } + + if (need_hm10_p) + { + the_insn.opcode = (OR_INSN + | (need_hh22_p ? RS1 (upper_dstreg) : 0) + | RD (upper_dstreg) + | IMMED + | (upper32 + & (need_hh22_p ? 0x3ff : 0x1fff))); + the_insn.reloc = (the_insn.exp.X_op != O_constant + ? BFD_RELOC_SPARC_HM10 : BFD_RELOC_NONE); + output_insn (insn, &the_insn); + } + + if (need_hi22_p) + { + the_insn.opcode = (SETHI_INSN | RD (dstreg) + | ((lower32 >> 10) & 0x3fffff)); + the_insn.reloc = BFD_RELOC_HI22; + output_insn (insn, &the_insn); + } + + if (need_lo10_p) + { + /* FIXME: One nice optimization to do here is to OR the low part + with the highpart if hi22 isn't needed and the low part is + positive. */ + the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (dstreg) : 0) + | RD (dstreg) + | IMMED + | (lower32 + & (need_hi22_p ? 0x3ff : 0x1fff))); + the_insn.reloc = BFD_RELOC_LO10; + output_insn (insn, &the_insn); + } + + /* If we needed to build the upper part, shift it into place. */ + if (need_hh22_p || need_hm10_p) + { + the_insn.opcode = (SLLX_INSN | RS1 (upper_dstreg) | RD (upper_dstreg) + | IMMED | 32); + the_insn.reloc = BFD_RELOC_NONE; + output_insn (insn, &the_insn); + } + + /* If we needed to build both upper and lower parts, OR them together. */ + if ((need_hh22_p || need_hm10_p) + && (need_hi22_p || need_lo10_p)) + { + the_insn.opcode = (OR_INSN | RS1 (dstreg) | RS2 (upper_dstreg) + | RD (dstreg)); + the_insn.reloc = BFD_RELOC_NONE; + output_insn (insn, &the_insn); + } + /* We didn't need both regs, but we may have to sign extend lower32. */ + else if (need_hi22_p && upper32 == -1) + { + the_insn.opcode = (SRA_INSN | RS1 (dstreg) | RD (dstreg) + | IMMED | 0); + the_insn.reloc = BFD_RELOC_NONE; + output_insn (insn, &the_insn); + } + break; + } + + case SPECIAL_CASE_FDIV: + { + int rd = (the_insn.opcode >> 25) & 0x1f; + + output_insn (insn, &the_insn); + + /* According to information leaked from Sun, the "fdiv" instructions + on early SPARC machines would produce incorrect results sometimes. + The workaround is to add an fmovs of the destination register to + itself just after the instruction. This was true on machines + with Weitek 1165 float chips, such as the Sun-4/260 and /280. */ + assert (the_insn.reloc == BFD_RELOC_NONE); + the_insn.opcode = FMOVS_INSN | rd | RD (rd); + output_insn (insn, &the_insn); + break; + } + + default: + as_fatal (_("failed special case insn sanity check")); + } +} + +/* Subroutine of md_assemble to do the actual parsing. */ + +static void +sparc_ip (str, pinsn) + char *str; + const struct sparc_opcode **pinsn; +{ + char *error_message = ""; + char *s; + const char *args; + char c; + const struct sparc_opcode *insn; + char *argsStart; + unsigned long opcode; + unsigned int mask = 0; + int match = 0; + int comma = 0; + int v9_arg_p; + + s = str; + if (islower ((unsigned char) *s)) + { + do + ++s; + while (islower ((unsigned char) *s) || isdigit ((unsigned char) *s)); + } + + switch (*s) + { + case '\0': + break; + + case ',': + comma = 1; + + /*FALLTHROUGH */ + + case ' ': + *s++ = '\0'; + break; + + default: + as_fatal (_("Unknown opcode: `%s'"), str); + } + insn = (struct sparc_opcode *) hash_find (op_hash, str); + *pinsn = insn; + if (insn == NULL) + { + as_bad (_("Unknown opcode: `%s'"), str); + return; + } + if (comma) + { + *--s = ','; + } + + argsStart = s; + for (;;) + { + opcode = insn->match; + memset (&the_insn, '\0', sizeof (the_insn)); + the_insn.reloc = BFD_RELOC_NONE; + v9_arg_p = 0; + + /* + * Build the opcode, checking as we go to make + * sure that the operands match + */ + for (args = insn->args;; ++args) + { + switch (*args) + { + case 'K': + { + int kmask = 0; + + /* Parse a series of masks. */ + if (*s == '#') + { + while (*s == '#') + { + int mask; + + if (! parse_keyword_arg (sparc_encode_membar, &s, + &mask)) + { + error_message = _(": invalid membar mask name"); + goto error; + } + kmask |= mask; + while (*s == ' ') { ++s; continue; } + if (*s == '|' || *s == '+') + ++s; + while (*s == ' ') { ++s; continue; } + } + } + else + { + if (! parse_const_expr_arg (&s, &kmask)) + { + error_message = _(": invalid membar mask expression"); + goto error; + } + if (kmask < 0 || kmask > 127) + { + error_message = _(": invalid membar mask number"); + goto error; + } + } + + opcode |= MEMBAR (kmask); + continue; + } + + case '*': + { + int fcn = 0; + + /* Parse a prefetch function. */ + if (*s == '#') + { + if (! parse_keyword_arg (sparc_encode_prefetch, &s, &fcn)) + { + error_message = _(": invalid prefetch function name"); + goto error; + } + } + else + { + if (! parse_const_expr_arg (&s, &fcn)) + { + error_message = _(": invalid prefetch function expression"); + goto error; + } + if (fcn < 0 || fcn > 31) + { + error_message = _(": invalid prefetch function number"); + goto error; + } + } + opcode |= RD (fcn); + continue; + } + + case '!': + case '?': + /* Parse a sparc64 privileged register. */ + if (*s == '%') + { + struct priv_reg_entry *p = priv_reg_table; + unsigned int len = 9999999; /* init to make gcc happy */ + + s += 1; + while (p->name[0] > s[0]) + p++; + while (p->name[0] == s[0]) + { + len = strlen (p->name); + if (strncmp (p->name, s, len) == 0) + break; + p++; + } + if (p->name[0] != s[0]) + { + error_message = _(": unrecognizable privileged register"); + goto error; + } + if (*args == '?') + opcode |= (p->regnum << 14); + else + opcode |= (p->regnum << 25); + s += len; + continue; + } + else + { + error_message = _(": unrecognizable privileged register"); + goto error; + } + + case '_': + case '/': + /* Parse a v9a ancillary state register. */ + if (*s == '%') + { + struct priv_reg_entry *p = v9a_asr_table; + unsigned int len = 9999999; /* init to make gcc happy */ + + s += 1; + while (p->name[0] > s[0]) + p++; + while (p->name[0] == s[0]) + { + len = strlen (p->name); + if (strncmp (p->name, s, len) == 0) + break; + p++; + } + if (p->name[0] != s[0]) + { + error_message = _(": unrecognizable v9a ancillary state register"); + goto error; + } + if (*args == '/' && (p->regnum == 20 || p->regnum == 21)) + { + error_message = _(": rd on write only ancillary state register"); + goto error; + } + if (*args == '/') + opcode |= (p->regnum << 14); + else + opcode |= (p->regnum << 25); + s += len; + continue; + } + else + { + error_message = _(": unrecognizable v9a ancillary state register"); + goto error; + } + + case 'M': + case 'm': + if (strncmp (s, "%asr", 4) == 0) + { + s += 4; + + if (isdigit ((unsigned char) *s)) + { + long num = 0; + + while (isdigit ((unsigned char) *s)) + { + num = num * 10 + *s - '0'; + ++s; + } + + if (current_architecture >= SPARC_OPCODE_ARCH_V9) + { + if (num < 16 || 31 < num) + { + error_message = _(": asr number must be between 16 and 31"); + goto error; + } + } + else + { + if (num < 0 || 31 < num) + { + error_message = _(": asr number must be between 0 and 31"); + goto error; + } + } + + opcode |= (*args == 'M' ? RS1 (num) : RD (num)); + continue; + } + else + { + error_message = _(": expecting %asrN"); + goto error; + } + } /* if %asr */ + break; + + case 'I': + the_insn.reloc = BFD_RELOC_SPARC_11; + goto immediate; + + case 'j': + the_insn.reloc = BFD_RELOC_SPARC_10; + goto immediate; + + case 'X': + /* V8 systems don't understand BFD_RELOC_SPARC_5. */ + if (SPARC_OPCODE_ARCH_V9_P (max_architecture)) + the_insn.reloc = BFD_RELOC_SPARC_5; + else + the_insn.reloc = BFD_RELOC_SPARC13; + /* These fields are unsigned, but for upward compatibility, + allow negative values as well. */ + goto immediate; + + case 'Y': + /* V8 systems don't understand BFD_RELOC_SPARC_6. */ + if (SPARC_OPCODE_ARCH_V9_P (max_architecture)) + the_insn.reloc = BFD_RELOC_SPARC_6; + else + the_insn.reloc = BFD_RELOC_SPARC13; + /* These fields are unsigned, but for upward compatibility, + allow negative values as well. */ + goto immediate; + + case 'k': + the_insn.reloc = /* RELOC_WDISP2_14 */ BFD_RELOC_SPARC_WDISP16; + the_insn.pcrel = 1; + goto immediate; + + case 'G': + the_insn.reloc = BFD_RELOC_SPARC_WDISP19; + the_insn.pcrel = 1; + goto immediate; + + case 'N': + if (*s == 'p' && s[1] == 'n') + { + s += 2; + continue; + } + break; + + case 'T': + if (*s == 'p' && s[1] == 't') + { + s += 2; + continue; + } + break; + + case 'z': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%icc", 4) == 0) + { + s += 4; + continue; + } + break; + + case 'Z': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%xcc", 4) == 0) + { + s += 4; + continue; + } + break; + + case '6': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%fcc0", 5) == 0) + { + s += 5; + continue; + } + break; + + case '7': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%fcc1", 5) == 0) + { + s += 5; + continue; + } + break; + + case '8': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%fcc2", 5) == 0) + { + s += 5; + continue; + } + break; + + case '9': + if (*s == ' ') + { + ++s; + } + if (strncmp (s, "%fcc3", 5) == 0) + { + s += 5; + continue; + } + break; + + case 'P': + if (strncmp (s, "%pc", 3) == 0) + { + s += 3; + continue; + } + break; + + case 'W': + if (strncmp (s, "%tick", 5) == 0) + { + s += 5; + continue; + } + break; + + case '\0': /* end of args */ + if (*s == '\0') + { + match = 1; + } + break; + + case '+': + if (*s == '+') + { + ++s; + continue; + } + if (*s == '-') + { + continue; + } + break; + + case '[': /* these must match exactly */ + case ']': + case ',': + case ' ': + if (*s++ == *args) + continue; + break; + + case '#': /* must be at least one digit */ + if (isdigit ((unsigned char) *s++)) + { + while (isdigit ((unsigned char) *s)) + { + ++s; + } + continue; + } + break; + + case 'C': /* coprocessor state register */ + if (strncmp (s, "%csr", 4) == 0) + { + s += 4; + continue; + } + break; + + case 'b': /* next operand is a coprocessor register */ + case 'c': + case 'D': + if (*s++ == '%' && *s++ == 'c' && isdigit ((unsigned char) *s)) + { + mask = *s++; + if (isdigit ((unsigned char) *s)) + { + mask = 10 * (mask - '0') + (*s++ - '0'); + if (mask >= 32) + { + break; + } + } + else + { + mask -= '0'; + } + switch (*args) + { + + case 'b': + opcode |= mask << 14; + continue; + + case 'c': + opcode |= mask; + continue; + + case 'D': + opcode |= mask << 25; + continue; + } + } + break; + + case 'r': /* next operand must be a register */ + case 'O': + case '1': + case '2': + case 'd': + if (*s++ == '%') + { + switch (c = *s++) + { + + case 'f': /* frame pointer */ + if (*s++ == 'p') + { + mask = 0x1e; + break; + } + goto error; + + case 'g': /* global register */ + if (isoctal (c = *s++)) + { + mask = c - '0'; + break; + } + goto error; + + case 'i': /* in register */ + if (isoctal (c = *s++)) + { + mask = c - '0' + 24; + break; + } + goto error; + + case 'l': /* local register */ + if (isoctal (c = *s++)) + { + mask = (c - '0' + 16); + break; + } + goto error; + + case 'o': /* out register */ + if (isoctal (c = *s++)) + { + mask = (c - '0' + 8); + break; + } + goto error; + + case 's': /* stack pointer */ + if (*s++ == 'p') + { + mask = 0xe; + break; + } + goto error; + + case 'r': /* any register */ + if (!isdigit ((unsigned char) (c = *s++))) + { + goto error; + } + /* FALLTHROUGH */ + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + if (isdigit ((unsigned char) *s)) + { + if ((c = 10 * (c - '0') + (*s++ - '0')) >= 32) + { + goto error; + } + } + else + { + c -= '0'; + } + mask = c; + break; + + default: + goto error; + } + + /* Got the register, now figure out where + it goes in the opcode. */ + switch (*args) + { + case '1': + opcode |= mask << 14; + continue; + + case '2': + opcode |= mask; + continue; + + case 'd': + opcode |= mask << 25; + continue; + + case 'r': + opcode |= (mask << 25) | (mask << 14); + continue; + + case 'O': + opcode |= (mask << 25) | (mask << 0); + continue; + } + } + break; + + case 'e': /* next operand is a floating point register */ + case 'v': + case 'V': + + case 'f': + case 'B': + case 'R': + + case 'g': + case 'H': + case 'J': + { + char format; + + if (*s++ == '%' + && ((format = *s) == 'f') + && isdigit ((unsigned char) *++s)) + { + for (mask = 0; isdigit ((unsigned char) *s); ++s) + { + mask = 10 * mask + (*s - '0'); + } /* read the number */ + + if ((*args == 'v' + || *args == 'B' + || *args == 'H') + && (mask & 1)) + { + break; + } /* register must be even numbered */ + + if ((*args == 'V' + || *args == 'R' + || *args == 'J') + && (mask & 3)) + { + break; + } /* register must be multiple of 4 */ + + if (mask >= 64) + { + if (SPARC_OPCODE_ARCH_V9_P (max_architecture)) + error_message = _(": There are only 64 f registers; [0-63]"); + else + error_message = _(": There are only 32 f registers; [0-31]"); + goto error; + } /* on error */ + else if (mask >= 32) + { + if (SPARC_OPCODE_ARCH_V9_P (max_architecture)) + { + v9_arg_p = 1; + mask -= 31; /* wrap high bit */ + } + else + { + error_message = _(": There are only 32 f registers; [0-31]"); + goto error; + } + } + } + else + { + break; + } /* if not an 'f' register. */ + + switch (*args) + { + case 'v': + case 'V': + case 'e': + opcode |= RS1 (mask); + continue; + + + case 'f': + case 'B': + case 'R': + opcode |= RS2 (mask); + continue; + + case 'g': + case 'H': + case 'J': + opcode |= RD (mask); + continue; + } /* pack it in. */ + + know (0); + break; + } /* float arg */ + + case 'F': + if (strncmp (s, "%fsr", 4) == 0) + { + s += 4; + continue; + } + break; + + case '0': /* 64 bit immediate (setx insn) */ + the_insn.reloc = BFD_RELOC_NONE; /* reloc handled elsewhere */ + goto immediate; + + case 'h': /* high 22 bits */ + the_insn.reloc = BFD_RELOC_HI22; + goto immediate; + + case 'l': /* 22 bit PC relative immediate */ + the_insn.reloc = BFD_RELOC_SPARC_WDISP22; + the_insn.pcrel = 1; + goto immediate; + + case 'L': /* 30 bit immediate */ + the_insn.reloc = BFD_RELOC_32_PCREL_S2; + the_insn.pcrel = 1; + goto immediate; + + case 'n': /* 22 bit immediate */ + the_insn.reloc = BFD_RELOC_SPARC22; + goto immediate; + + case 'i': /* 13 bit immediate */ + the_insn.reloc = BFD_RELOC_SPARC13; + + /* fallthrough */ + + immediate: + if (*s == ' ') + s++; + + /* Check for %hi, etc. */ + if (*s == '%') + { + static struct ops { + /* The name as it appears in assembler. */ + char *name; + /* strlen (name), precomputed for speed */ + int len; + /* The reloc this pseudo-op translates to. */ + int reloc; + /* Non-zero if for v9 only. */ + int v9_p; + /* Non-zero if can be used in pc-relative contexts. */ + int pcrel_p;/*FIXME:wip*/ + } ops[] = { + /* hix/lox must appear before hi/lo so %hix won't be + mistaken for %hi. */ + { "hix", 3, BFD_RELOC_SPARC_HIX22, 1, 0 }, + { "lox", 3, BFD_RELOC_SPARC_LOX10, 1, 0 }, + { "hi", 2, BFD_RELOC_HI22, 0, 1 }, + { "lo", 2, BFD_RELOC_LO10, 0, 1 }, + { "hh", 2, BFD_RELOC_SPARC_HH22, 1, 1 }, + { "hm", 2, BFD_RELOC_SPARC_HM10, 1, 1 }, + { "lm", 2, BFD_RELOC_SPARC_LM22, 1, 1 }, + { "h44", 3, BFD_RELOC_SPARC_H44, 1, 0 }, + { "m44", 3, BFD_RELOC_SPARC_M44, 1, 0 }, + { "l44", 3, BFD_RELOC_SPARC_L44, 1, 0 }, + { "uhi", 3, BFD_RELOC_SPARC_HH22, 1, 0 }, + { "ulo", 3, BFD_RELOC_SPARC_HM10, 1, 0 }, + { NULL } + }; + struct ops *o; + + for (o = ops; o->name; o++) + if (strncmp (s + 1, o->name, o->len) == 0) + break; + if (o->name == NULL) + break; + + the_insn.reloc = o->reloc; + s += o->len + 1; + v9_arg_p = o->v9_p; + } + + /* Note that if the get_expression() fails, we will still + have created U entries in the symbol table for the + 'symbols' in the input string. Try not to create U + symbols for registers, etc. */ + { + /* This stuff checks to see if the expression ends in + +%reg. If it does, it removes the register from + the expression, and re-sets 's' to point to the + right place. */ + + char *s1; + + for (s1 = s; *s1 && *s1 != ',' && *s1 != ']'; s1++) ; + + if (s1 != s && isdigit ((unsigned char) s1[-1])) + { + if (s1[-2] == '%' && s1[-3] == '+') + { + s1 -= 3; + *s1 = '\0'; + (void) get_expression (s); + *s1 = '+'; + s = s1; + continue; + } + else if (strchr ("goli0123456789", s1[-2]) && s1[-3] == '%' && s1[-4] == '+') + { + s1 -= 4; + *s1 = '\0'; + (void) get_expression (s); + *s1 = '+'; + s = s1; + continue; + } + } + } + (void) get_expression (s); + s = expr_end; + + /* Check for constants that don't require emitting a reloc. */ + if (the_insn.exp.X_op == O_constant + && the_insn.exp.X_add_symbol == 0 + && the_insn.exp.X_op_symbol == 0) + { + /* For pc-relative call instructions, we reject + constants to get better code. */ + if (the_insn.pcrel + && the_insn.reloc == BFD_RELOC_32_PCREL_S2 + && in_signed_range (the_insn.exp.X_add_number, 0x3fff)) + { + error_message = _(": PC-relative operand can't be a constant"); + goto error; + } + + /* Constants that won't fit are checked in md_apply_fix3 + and bfd_install_relocation. + ??? It would be preferable to install the constants + into the insn here and save having to create a fixS + for each one. There already exists code to handle + all the various cases (e.g. in md_apply_fix3 and + bfd_install_relocation) so duplicating all that code + here isn't right. */ + } + + continue; + + case 'a': + if (*s++ == 'a') + { + opcode |= ANNUL; + continue; + } + break; + + case 'A': + { + int asi = 0; + + /* Parse an asi. */ + if (*s == '#') + { + if (! parse_keyword_arg (sparc_encode_asi, &s, &asi)) + { + error_message = _(": invalid ASI name"); + goto error; + } + } + else + { + if (! parse_const_expr_arg (&s, &asi)) + { + error_message = _(": invalid ASI expression"); + goto error; + } + if (asi < 0 || asi > 255) + { + error_message = _(": invalid ASI number"); + goto error; + } + } + opcode |= ASI (asi); + continue; + } /* alternate space */ + + case 'p': + if (strncmp (s, "%psr", 4) == 0) + { + s += 4; + continue; + } + break; + + case 'q': /* floating point queue */ + if (strncmp (s, "%fq", 3) == 0) + { + s += 3; + continue; + } + break; + + case 'Q': /* coprocessor queue */ + if (strncmp (s, "%cq", 3) == 0) + { + s += 3; + continue; + } + break; + + case 'S': + if (strcmp (str, "set") == 0 + || strcmp (str, "setuw") == 0) + { + special_case = SPECIAL_CASE_SET; + continue; + } + else if (strcmp (str, "setsw") == 0) + { + special_case = SPECIAL_CASE_SETSW; + continue; + } + else if (strcmp (str, "setx") == 0) + { + special_case = SPECIAL_CASE_SETX; + continue; + } + else if (strncmp (str, "fdiv", 4) == 0) + { + special_case = SPECIAL_CASE_FDIV; + continue; + } + break; + + case 'o': + if (strncmp (s, "%asi", 4) != 0) + break; + s += 4; + continue; + + case 's': + if (strncmp (s, "%fprs", 5) != 0) + break; + s += 5; + continue; + + case 'E': + if (strncmp (s, "%ccr", 4) != 0) + break; + s += 4; + continue; + + case 't': + if (strncmp (s, "%tbr", 4) != 0) + break; + s += 4; + continue; + + case 'w': + if (strncmp (s, "%wim", 4) != 0) + break; + s += 4; + continue; + + case 'x': + { + char *push = input_line_pointer; + expressionS e; + + input_line_pointer = s; + expression (&e); + if (e.X_op == O_constant) + { + int n = e.X_add_number; + if (n != e.X_add_number || (n & ~0x1ff) != 0) + as_bad (_("OPF immediate operand out of range (0-0x1ff)")); + else + opcode |= e.X_add_number << 5; + } + else + as_bad (_("non-immediate OPF operand, ignored")); + s = input_line_pointer; + input_line_pointer = push; + continue; + } + + case 'y': + if (strncmp (s, "%y", 2) != 0) + break; + s += 2; + continue; + + case 'u': + case 'U': + { + /* Parse a sparclet cpreg. */ + int cpreg; + if (! parse_keyword_arg (sparc_encode_sparclet_cpreg, &s, &cpreg)) + { + error_message = _(": invalid cpreg name"); + goto error; + } + opcode |= (*args == 'U' ? RS1 (cpreg) : RD (cpreg)); + continue; + } + + default: + as_fatal (_("failed sanity check.")); + } /* switch on arg code */ + + /* Break out of for() loop. */ + break; + } /* for each arg that we expect */ + + error: + if (match == 0) + { + /* Args don't match. */ + if (&insn[1] - sparc_opcodes < sparc_num_opcodes + && (insn->name == insn[1].name + || !strcmp (insn->name, insn[1].name))) + { + ++insn; + s = argsStart; + continue; + } + else + { + as_bad (_("Illegal operands%s"), error_message); + return; + } + } + else + { + /* We have a match. Now see if the architecture is ok. */ + int needed_arch_mask = insn->architecture; + + if (v9_arg_p) + { + needed_arch_mask &= ~ ((1 << SPARC_OPCODE_ARCH_V9) + | (1 << SPARC_OPCODE_ARCH_V9A)); + needed_arch_mask |= (1 << SPARC_OPCODE_ARCH_V9); + } + + if (needed_arch_mask & SPARC_OPCODE_SUPPORTED (current_architecture)) + ; /* ok */ + /* Can we bump up the architecture? */ + else if (needed_arch_mask & SPARC_OPCODE_SUPPORTED (max_architecture)) + { + enum sparc_opcode_arch_val needed_architecture = + sparc_ffs (SPARC_OPCODE_SUPPORTED (max_architecture) + & needed_arch_mask); + + assert (needed_architecture <= SPARC_OPCODE_ARCH_MAX); + if (warn_on_bump + && needed_architecture > warn_after_architecture) + { + as_warn (_("architecture bumped from \"%s\" to \"%s\" on \"%s\""), + sparc_opcode_archs[current_architecture].name, + sparc_opcode_archs[needed_architecture].name, + str); + warn_after_architecture = needed_architecture; + } + current_architecture = needed_architecture; + } + /* Conflict. */ + /* ??? This seems to be a bit fragile. What if the next entry in + the opcode table is the one we want and it is supported? + It is possible to arrange the table today so that this can't + happen but what about tomorrow? */ + else + { + int arch,printed_one_p = 0; + char *p; + char required_archs[SPARC_OPCODE_ARCH_MAX * 16]; + + /* Create a list of the architectures that support the insn. */ + needed_arch_mask &= ~ SPARC_OPCODE_SUPPORTED (max_architecture); + p = required_archs; + arch = sparc_ffs (needed_arch_mask); + while ((1 << arch) <= needed_arch_mask) + { + if ((1 << arch) & needed_arch_mask) + { + if (printed_one_p) + *p++ = '|'; + strcpy (p, sparc_opcode_archs[arch].name); + p += strlen (p); + printed_one_p = 1; + } + ++arch; + } + + as_bad (_("Architecture mismatch on \"%s\"."), str); + as_tsktsk (_(" (Requires %s; requested architecture is %s.)"), + required_archs, + sparc_opcode_archs[max_architecture].name); + return; + } + } /* if no match */ + + break; + } /* forever looking for a match */ + + the_insn.opcode = opcode; +} + +/* Parse an argument that can be expressed as a keyword. + (eg: #StoreStore or %ccfr). + The result is a boolean indicating success. + If successful, INPUT_POINTER is updated. */ + +static int +parse_keyword_arg (lookup_fn, input_pointerP, valueP) + int (*lookup_fn) PARAMS ((const char *)); + char **input_pointerP; + int *valueP; +{ + int value; + char c, *p, *q; + + p = *input_pointerP; + for (q = p + (*p == '#' || *p == '%'); + isalnum ((unsigned char) *q) || *q == '_'; + ++q) + continue; + c = *q; + *q = 0; + value = (*lookup_fn) (p); + *q = c; + if (value == -1) + return 0; + *valueP = value; + *input_pointerP = q; + return 1; +} + +/* Parse an argument that is a constant expression. + The result is a boolean indicating success. */ + +static int +parse_const_expr_arg (input_pointerP, valueP) + char **input_pointerP; + int *valueP; +{ + char *save = input_line_pointer; + expressionS exp; + + input_line_pointer = *input_pointerP; + /* The next expression may be something other than a constant + (say if we're not processing the right variant of the insn). + Don't call expression unless we're sure it will succeed as it will + signal an error (which we want to defer until later). */ + /* FIXME: It might be better to define md_operand and have it recognize + things like %asi, etc. but continuing that route through to the end + is a lot of work. */ + if (*input_line_pointer == '%') + { + input_line_pointer = save; + return 0; + } + expression (&exp); + *input_pointerP = input_line_pointer; + input_line_pointer = save; + if (exp.X_op != O_constant) + return 0; + *valueP = exp.X_add_number; + return 1; +} + +/* Subroutine of sparc_ip to parse an expression. */ + +static int +get_expression (str) + char *str; +{ + char *save_in; + segT seg; + + save_in = input_line_pointer; + input_line_pointer = str; + seg = expression (&the_insn.exp); + if (seg != absolute_section + && seg != text_section + && seg != data_section + && seg != bss_section + && seg != undefined_section) + { + the_insn.error = _("bad segment"); + expr_end = input_line_pointer; + input_line_pointer = save_in; + return 1; + } + expr_end = input_line_pointer; + input_line_pointer = save_in; + return 0; +} + +/* Subroutine of md_assemble to output one insn. */ + +static void +output_insn (insn, the_insn) + const struct sparc_opcode *insn; + struct sparc_it *the_insn; +{ + char *toP = frag_more (4); + + /* put out the opcode */ + if (INSN_BIG_ENDIAN) + number_to_chars_bigendian (toP, (valueT) the_insn->opcode, 4); + else + number_to_chars_littleendian (toP, (valueT) the_insn->opcode, 4); + + /* put out the symbol-dependent stuff */ + if (the_insn->reloc != BFD_RELOC_NONE) + { + fixS *fixP = fix_new_exp (frag_now, /* which frag */ + (toP - frag_now->fr_literal), /* where */ + 4, /* size */ + &the_insn->exp, + the_insn->pcrel, + the_insn->reloc); + /* Turn off overflow checking in fixup_segment. We'll do our + own overflow checking in md_apply_fix3. This is necessary because + the insn size is 4 and fixup_segment will signal an overflow for + large 8 byte quantities. */ + fixP->fx_no_overflow = 1; + } + + last_insn = insn; + last_opcode = the_insn->opcode; +} + +/* + This is identical to the md_atof in m68k.c. I think this is right, + but I'm not sure. + + Turn a string in input_line_pointer into a floating point constant of type + type, and store the appropriate bytes in *litP. The number of LITTLENUMS + emitted is stored in *sizeP . An error message is returned, or NULL on OK. + */ + +/* Equal to MAX_PRECISION in atof-ieee.c */ +#define MAX_LITTLENUMS 6 + +char * +md_atof (type, litP, sizeP) + char type; + char *litP; + int *sizeP; +{ + int i,prec; + LITTLENUM_TYPE words[MAX_LITTLENUMS]; + char *t; + + 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); + + if (target_big_endian) + { + for (i = 0; i < prec; i++) + { + md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE)); + litP += sizeof (LITTLENUM_TYPE); + } + } + else + { + for (i = prec - 1; i >= 0; i--) + { + md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE)); + litP += sizeof (LITTLENUM_TYPE); + } + } + + return 0; +} + +/* Write a value out to the object file, using the appropriate + endianness. */ + +void +md_number_to_chars (buf, val, n) + char *buf; + valueT val; + int n; +{ + if (target_big_endian) + number_to_chars_bigendian (buf, val, n); + else if (target_little_endian_data + && ((n == 4 || n == 2) && ~now_seg->flags & SEC_ALLOC)) + /* Output debug words, which are not in allocated sections, as big endian */ + number_to_chars_bigendian (buf, val, n); + else if (target_little_endian_data || ! target_big_endian) + number_to_chars_littleendian (buf, val, n); +} + +/* Apply a fixS to the frags, now that we know the value it ought to + hold. */ + +int +md_apply_fix3 (fixP, value, segment) + fixS *fixP; + valueT *value; + segT segment; +{ + char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; + offsetT val; + long insn; + + val = *value; + + assert (fixP->fx_r_type < BFD_RELOC_UNUSED); + + fixP->fx_addnumber = val; /* Remember value for emit_reloc */ + +#ifdef OBJ_ELF + /* FIXME: SPARC ELF relocations don't use an addend in the data + field itself. This whole approach should be somehow combined + with the calls to bfd_install_relocation. Also, the value passed + in by fixup_segment includes the value of a defined symbol. We + don't want to include the value of an externally visible symbol. */ + if (fixP->fx_addsy != NULL) + { + if (fixP->fx_addsy->sy_used_in_reloc + && (S_IS_EXTERNAL (fixP->fx_addsy) + || S_IS_WEAK (fixP->fx_addsy) + || (sparc_pic_code && ! fixP->fx_pcrel) + || (S_GET_SEGMENT (fixP->fx_addsy) != segment + && ((bfd_get_section_flags (stdoutput, + S_GET_SEGMENT (fixP->fx_addsy)) + & SEC_LINK_ONCE) != 0 + || strncmp (segment_name (S_GET_SEGMENT (fixP->fx_addsy)), + ".gnu.linkonce", + sizeof ".gnu.linkonce" - 1) == 0))) + && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section + && S_GET_SEGMENT (fixP->fx_addsy) != undefined_section + && ! bfd_is_com_section (S_GET_SEGMENT (fixP->fx_addsy))) + fixP->fx_addnumber -= S_GET_VALUE (fixP->fx_addsy); + return 1; + } +#endif + + /* This is a hack. There should be a better way to + handle this. Probably in terms of howto fields, once + we can look at these fixups in terms of howtos. */ + if (fixP->fx_r_type == BFD_RELOC_32_PCREL_S2 && fixP->fx_addsy) + val += fixP->fx_where + fixP->fx_frag->fr_address; + +#ifdef OBJ_AOUT + /* FIXME: More ridiculous gas reloc hacking. If we are going to + generate a reloc, then we just want to let the reloc addend set + the value. We do not want to also stuff the addend into the + object file. Including the addend in the object file works when + doing a static link, because the linker will ignore the object + file contents. However, the dynamic linker does not ignore the + object file contents. */ + if (fixP->fx_addsy != NULL + && fixP->fx_r_type != BFD_RELOC_32_PCREL_S2) + val = 0; + + /* When generating PIC code, we do not want an addend for a reloc + against a local symbol. We adjust fx_addnumber to cancel out the + value already included in val, and to also cancel out the + adjustment which bfd_install_relocation will create. */ + if (sparc_pic_code + && fixP->fx_r_type != BFD_RELOC_32_PCREL_S2 + && fixP->fx_addsy != NULL + && ! S_IS_COMMON (fixP->fx_addsy) + && (fixP->fx_addsy->bsym->flags & BSF_SECTION_SYM) == 0) + fixP->fx_addnumber -= 2 * S_GET_VALUE (fixP->fx_addsy); + + /* When generating PIC code, we need to fiddle to get + bfd_install_relocation to do the right thing for a PC relative + reloc against a local symbol which we are going to keep. */ + if (sparc_pic_code + && fixP->fx_r_type == BFD_RELOC_32_PCREL_S2 + && fixP->fx_addsy != NULL + && (S_IS_EXTERNAL (fixP->fx_addsy) + || S_IS_WEAK (fixP->fx_addsy)) + && S_IS_DEFINED (fixP->fx_addsy) + && ! S_IS_COMMON (fixP->fx_addsy)) + { + val = 0; + fixP->fx_addnumber -= 2 * S_GET_VALUE (fixP->fx_addsy); + } +#endif + + /* If this is a data relocation, just output VAL. */ + + if (fixP->fx_r_type == BFD_RELOC_16) + { + md_number_to_chars (buf, val, 2); + } + else if (fixP->fx_r_type == BFD_RELOC_32 + || fixP->fx_r_type == BFD_RELOC_SPARC_REV32) + { + md_number_to_chars (buf, val, 4); + } + else if (fixP->fx_r_type == BFD_RELOC_64) + { + md_number_to_chars (buf, val, 8); + } + else if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT + || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) + { + fixP->fx_done = 0; + return 1; + } + else + { + /* It's a relocation against an instruction. */ + + if (INSN_BIG_ENDIAN) + insn = bfd_getb32 ((unsigned char *) buf); + else + insn = bfd_getl32 ((unsigned char *) buf); + + switch (fixP->fx_r_type) + { + case BFD_RELOC_32_PCREL_S2: + val = val >> 2; + /* FIXME: This increment-by-one deserves a comment of why it's + being done! */ + if (! sparc_pic_code + || fixP->fx_addsy == NULL + || (fixP->fx_addsy->bsym->flags & BSF_SECTION_SYM) != 0) + ++val; + insn |= val & 0x3fffffff; + break; + + case BFD_RELOC_SPARC_11: + if (! in_signed_range (val, 0x7ff)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x7ff; + break; + + case BFD_RELOC_SPARC_10: + if (! in_signed_range (val, 0x3ff)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x3ff; + break; + + case BFD_RELOC_SPARC_7: + if (! in_bitfield_range (val, 0x7f)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x7f; + break; + + case BFD_RELOC_SPARC_6: + if (! in_bitfield_range (val, 0x3f)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x3f; + break; + + case BFD_RELOC_SPARC_5: + if (! in_bitfield_range (val, 0x1f)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x1f; + break; + + case BFD_RELOC_SPARC_WDISP16: + /* FIXME: simplify */ + if (((val > 0) && (val & ~0x3fffc)) + || ((val < 0) && (~(val - 1) & ~0x3fffc))) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + /* FIXME: The +1 deserves a comment. */ + val = (val >> 2) + 1; + insn |= ((val & 0xc000) << 6) | (val & 0x3fff); + break; + + case BFD_RELOC_SPARC_WDISP19: + /* FIXME: simplify */ + if (((val > 0) && (val & ~0x1ffffc)) + || ((val < 0) && (~(val - 1) & ~0x1ffffc))) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + /* FIXME: The +1 deserves a comment. */ + val = (val >> 2) + 1; + insn |= val & 0x7ffff; + break; + + case BFD_RELOC_SPARC_HH22: + val = BSR (val, 32); + /* intentional fallthrough */ + + case BFD_RELOC_SPARC_LM22: + case BFD_RELOC_HI22: + if (!fixP->fx_addsy) + { + insn |= (val >> 10) & 0x3fffff; + } + else + { + /* FIXME: Need comment explaining why we do this. */ + insn &= ~0xffff; + } + break; + + case BFD_RELOC_SPARC22: + if (val & ~0x003fffff) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= (val & 0x3fffff); + break; + + case BFD_RELOC_SPARC_HM10: + val = BSR (val, 32); + /* intentional fallthrough */ + + case BFD_RELOC_LO10: + if (!fixP->fx_addsy) + { + insn |= val & 0x3ff; + } + else + { + /* FIXME: Need comment explaining why we do this. */ + insn &= ~0xff; + } + break; + + case BFD_RELOC_SPARC13: + if (! in_signed_range (val, 0x1fff)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("relocation overflow")); + insn |= val & 0x1fff; + break; + + case BFD_RELOC_SPARC_WDISP22: + val = (val >> 2) + 1; + /* FALLTHROUGH */ + case BFD_RELOC_SPARC_BASE22: + insn |= val & 0x3fffff; + break; + + case BFD_RELOC_SPARC_H44: + if (!fixP->fx_addsy) + { + bfd_vma tval = val; + tval >>= 22; + insn |= tval & 0x3fffff; + } + break; + + case BFD_RELOC_SPARC_M44: + if (!fixP->fx_addsy) + insn |= (val >> 12) & 0x3ff; + break; + + case BFD_RELOC_SPARC_L44: + if (!fixP->fx_addsy) + insn |= val & 0xfff; + break; + + case BFD_RELOC_SPARC_HIX22: + if (!fixP->fx_addsy) + { + val ^= ~ (offsetT) 0; + insn |= (val >> 10) & 0x3fffff; + } + break; + + case BFD_RELOC_SPARC_LOX10: + if (!fixP->fx_addsy) + insn |= 0x1c00 | (val & 0x3ff); + break; + + case BFD_RELOC_NONE: + default: + as_bad_where (fixP->fx_file, fixP->fx_line, + _("bad or unhandled relocation type: 0x%02x"), + fixP->fx_r_type); + break; + } + + if (INSN_BIG_ENDIAN) + bfd_putb32 (insn, (unsigned char *) buf); + else + bfd_putl32 (insn, (unsigned char *) buf); + } + + /* Are we finished with this relocation now? */ + if (fixP->fx_addsy == 0 && !fixP->fx_pcrel) + fixP->fx_done = 1; + + return 1; +} + +/* Translate internal representation of relocation info to BFD target + format. */ +arelent * +tc_gen_reloc (section, fixp) + asection *section; + fixS *fixp; +{ + arelent *reloc; + bfd_reloc_code_real_type code; + + reloc = (arelent *) xmalloc (sizeof (arelent)); + + reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym; + reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; + + switch (fixp->fx_r_type) + { + case BFD_RELOC_16: + case BFD_RELOC_32: + case BFD_RELOC_HI22: + case BFD_RELOC_LO10: + case BFD_RELOC_32_PCREL_S2: + case BFD_RELOC_SPARC13: + case BFD_RELOC_SPARC_BASE13: + case BFD_RELOC_SPARC_WDISP16: + case BFD_RELOC_SPARC_WDISP19: + case BFD_RELOC_SPARC_WDISP22: + case BFD_RELOC_64: + case BFD_RELOC_SPARC_5: + case BFD_RELOC_SPARC_6: + case BFD_RELOC_SPARC_7: + case BFD_RELOC_SPARC_10: + case BFD_RELOC_SPARC_11: + case BFD_RELOC_SPARC_HH22: + case BFD_RELOC_SPARC_HM10: + case BFD_RELOC_SPARC_LM22: + case BFD_RELOC_SPARC_PC_HH22: + case BFD_RELOC_SPARC_PC_HM10: + case BFD_RELOC_SPARC_PC_LM22: + case BFD_RELOC_SPARC_H44: + case BFD_RELOC_SPARC_M44: + case BFD_RELOC_SPARC_L44: + case BFD_RELOC_SPARC_HIX22: + case BFD_RELOC_SPARC_LOX10: + case BFD_RELOC_SPARC_REV32: + case BFD_RELOC_VTABLE_ENTRY: + case BFD_RELOC_VTABLE_INHERIT: + code = fixp->fx_r_type; + break; + default: + abort (); + return NULL; + } + +#if defined (OBJ_ELF) || defined (OBJ_AOUT) + /* If we are generating PIC code, we need to generate a different + set of relocs. */ + +#ifdef OBJ_ELF +#define GOT_NAME "_GLOBAL_OFFSET_TABLE_" +#else +#define GOT_NAME "__GLOBAL_OFFSET_TABLE_" +#endif + + if (sparc_pic_code) + { + switch (code) + { + case BFD_RELOC_32_PCREL_S2: + if (! S_IS_DEFINED (fixp->fx_addsy) + || S_IS_COMMON (fixp->fx_addsy) + || S_IS_EXTERNAL (fixp->fx_addsy) + || S_IS_WEAK (fixp->fx_addsy)) + code = BFD_RELOC_SPARC_WPLT30; + break; + case BFD_RELOC_HI22: + if (fixp->fx_addsy != NULL + && strcmp (S_GET_NAME (fixp->fx_addsy), GOT_NAME) == 0) + code = BFD_RELOC_SPARC_PC22; + else + code = BFD_RELOC_SPARC_GOT22; + break; + case BFD_RELOC_LO10: + if (fixp->fx_addsy != NULL + && strcmp (S_GET_NAME (fixp->fx_addsy), GOT_NAME) == 0) + code = BFD_RELOC_SPARC_PC10; + else + code = BFD_RELOC_SPARC_GOT10; + break; + case BFD_RELOC_SPARC13: + code = BFD_RELOC_SPARC_GOT13; + break; + default: + break; + } + } +#endif /* defined (OBJ_ELF) || defined (OBJ_AOUT) */ + + reloc->howto = bfd_reloc_type_lookup (stdoutput, code); + if (reloc->howto == 0) + { + as_bad_where (fixp->fx_file, fixp->fx_line, + _("internal error: can't export reloc type %d (`%s')"), + fixp->fx_r_type, bfd_get_reloc_code_name (code)); + return 0; + } + + /* @@ Why fx_addnumber sometimes and fx_offset other times? */ +#ifdef OBJ_AOUT + + if (reloc->howto->pc_relative == 0 + || code == BFD_RELOC_SPARC_PC10 + || code == BFD_RELOC_SPARC_PC22) + reloc->addend = fixp->fx_addnumber; + else if (sparc_pic_code + && fixp->fx_r_type == BFD_RELOC_32_PCREL_S2 + && fixp->fx_addsy != NULL + && (S_IS_EXTERNAL (fixp->fx_addsy) + || S_IS_WEAK (fixp->fx_addsy)) + && S_IS_DEFINED (fixp->fx_addsy) + && ! S_IS_COMMON (fixp->fx_addsy)) + reloc->addend = fixp->fx_addnumber; + else + reloc->addend = fixp->fx_offset - reloc->address; + +#else /* elf or coff */ + + if (reloc->howto->pc_relative == 0 + || code == BFD_RELOC_SPARC_PC10 + || code == BFD_RELOC_SPARC_PC22) + reloc->addend = fixp->fx_addnumber; + else if ((fixp->fx_addsy->bsym->flags & BSF_SECTION_SYM) != 0) + reloc->addend = (section->vma + + fixp->fx_addnumber + + md_pcrel_from (fixp)); + else + reloc->addend = fixp->fx_offset; +#endif + + return reloc; +} + +/* We have no need to default values of symbols. */ + +/* ARGSUSED */ +symbolS * +md_undefined_symbol (name) + char *name; +{ + return 0; +} /* md_undefined_symbol() */ + +/* Round up a section size to the appropriate boundary. */ +valueT +md_section_align (segment, size) + segT segment; + valueT size; +{ +#ifndef OBJ_ELF + /* This is not right for ELF; a.out wants it, and COFF will force + the alignment anyways. */ + valueT align = ((valueT) 1 + << (valueT) bfd_get_section_alignment (stdoutput, segment)); + valueT newsize; + /* turn alignment value into a mask */ + align--; + newsize = (size + align) & ~align; + return newsize; +#else + return size; +#endif +} + +/* Exactly what point is a PC-relative offset relative TO? + On the sparc, they're relative to the address of the offset, plus + its size. This gets us to the following instruction. + (??? Is this right? FIXME-SOON) */ +long +md_pcrel_from (fixP) + fixS *fixP; +{ + long ret; + + ret = fixP->fx_where + fixP->fx_frag->fr_address; + if (! sparc_pic_code + || fixP->fx_addsy == NULL + || (fixP->fx_addsy->bsym->flags & BSF_SECTION_SYM) != 0) + ret += fixP->fx_size; + return ret; +} + +/* Return log2 (VALUE), or -1 if VALUE is not an exact positive power + of two. */ + +static int +log2 (value) + int value; +{ + int shift; + + if (value <= 0) + return -1; + + for (shift = 0; (value & 1) == 0; value >>= 1) + ++shift; + + return (value == 1) ? shift : -1; +} + +/* + * sort of like s_lcomm + */ + +#ifndef OBJ_ELF +static int max_alignment = 15; +#endif + +static void +s_reserve (ignore) + int ignore; +{ + char *name; + char *p; + char c; + int align; + int size; + int temp; + symbolS *symbolP; + + name = input_line_pointer; + c = get_symbol_end (); + p = input_line_pointer; + *p = c; + SKIP_WHITESPACE (); + + if (*input_line_pointer != ',') + { + as_bad (_("Expected comma after name")); + ignore_rest_of_line (); + return; + } + + ++input_line_pointer; + + if ((size = get_absolute_expression ()) < 0) + { + as_bad (_("BSS length (%d.) <0! Ignored."), size); + ignore_rest_of_line (); + return; + } /* bad length */ + + *p = 0; + symbolP = symbol_find_or_make (name); + *p = c; + + if (strncmp (input_line_pointer, ",\"bss\"", 6) != 0 + && strncmp (input_line_pointer, ",\".bss\"", 7) != 0) + { + as_bad (_("bad .reserve segment -- expected BSS segment")); + return; + } + + if (input_line_pointer[2] == '.') + input_line_pointer += 7; + else + input_line_pointer += 6; + SKIP_WHITESPACE (); + + if (*input_line_pointer == ',') + { + ++input_line_pointer; + + SKIP_WHITESPACE (); + if (*input_line_pointer == '\n') + { + as_bad (_("missing alignment")); + ignore_rest_of_line (); + return; + } + + align = (int) get_absolute_expression (); + +#ifndef OBJ_ELF + if (align > max_alignment) + { + align = max_alignment; + as_warn (_("alignment too large; assuming %d"), align); + } +#endif + + if (align < 0) + { + as_bad (_("negative alignment")); + ignore_rest_of_line (); + return; + } + + if (align != 0) + { + temp = log2 (align); + if (temp < 0) + { + as_bad (_("alignment not a power of 2")); + ignore_rest_of_line (); + return; + } + + align = temp; + } + + record_alignment (bss_section, align); + } + else + align = 0; + + if (!S_IS_DEFINED (symbolP) +#ifdef OBJ_AOUT + && S_GET_OTHER (symbolP) == 0 + && S_GET_DESC (symbolP) == 0 +#endif + ) + { + if (! need_pass_2) + { + char *pfrag; + segT current_seg = now_seg; + subsegT current_subseg = now_subseg; + + subseg_set (bss_section, 1); /* switch to bss */ + + if (align) + frag_align (align, 0, 0); /* do alignment */ + + /* detach from old frag */ + if (S_GET_SEGMENT(symbolP) == bss_section) + symbolP->sy_frag->fr_symbol = NULL; + + symbolP->sy_frag = frag_now; + pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, + (offsetT) size, (char *)0); + *pfrag = 0; + + S_SET_SEGMENT (symbolP, bss_section); + + subseg_set (current_seg, current_subseg); + +#ifdef OBJ_ELF + S_SET_SIZE (symbolP, size); +#endif + } + } + else + { + as_warn("Ignoring attempt to re-define symbol %s", + S_GET_NAME (symbolP)); + } /* if not redefining */ + + demand_empty_rest_of_line (); +} + +static void +s_common (ignore) + int ignore; +{ + char *name; + char c; + char *p; + int temp, size; + symbolS *symbolP; + + name = input_line_pointer; + c = get_symbol_end (); + /* just after name is now '\0' */ + p = input_line_pointer; + *p = c; + SKIP_WHITESPACE (); + if (*input_line_pointer != ',') + { + as_bad (_("Expected comma after symbol-name")); + ignore_rest_of_line (); + return; + } + input_line_pointer++; /* skip ',' */ + if ((temp = get_absolute_expression ()) < 0) + { + as_bad (_(".COMMon length (%d.) <0! Ignored."), temp); + ignore_rest_of_line (); + return; + } + size = temp; + *p = 0; + symbolP = symbol_find_or_make (name); + *p = c; + if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) + { + as_bad (_("Ignoring attempt to re-define symbol")); + ignore_rest_of_line (); + return; + } + if (S_GET_VALUE (symbolP) != 0) + { + if (S_GET_VALUE (symbolP) != (valueT) size) + { + as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."), + S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); + } + } + else + { +#ifndef OBJ_ELF + S_SET_VALUE (symbolP, (valueT) size); + S_SET_EXTERNAL (symbolP); +#endif + } + know (symbolP->sy_frag == &zero_address_frag); + if (*input_line_pointer != ',') + { + as_bad (_("Expected comma after common length")); + ignore_rest_of_line (); + return; + } + input_line_pointer++; + SKIP_WHITESPACE (); + if (*input_line_pointer != '"') + { + temp = get_absolute_expression (); + +#ifndef OBJ_ELF + if (temp > max_alignment) + { + temp = max_alignment; + as_warn (_("alignment too large; assuming %d"), temp); + } +#endif + + if (temp < 0) + { + as_bad (_("negative alignment")); + ignore_rest_of_line (); + return; + } + +#ifdef OBJ_ELF + if (symbolP->local) + { + segT old_sec; + int old_subsec; + char *p; + int align; + + old_sec = now_seg; + old_subsec = now_subseg; + + if (temp == 0) + align = 0; + else + align = log2 (temp); + + if (align < 0) + { + as_bad (_("alignment not a power of 2")); + ignore_rest_of_line (); + return; + } + + record_alignment (bss_section, align); + subseg_set (bss_section, 0); + if (align) + frag_align (align, 0, 0); + if (S_GET_SEGMENT (symbolP) == bss_section) + symbolP->sy_frag->fr_symbol = 0; + symbolP->sy_frag = frag_now; + p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, + (offsetT) size, (char *) 0); + *p = 0; + S_SET_SEGMENT (symbolP, bss_section); + S_CLEAR_EXTERNAL (symbolP); + S_SET_SIZE (symbolP, size); + subseg_set (old_sec, old_subsec); + } + else +#endif /* OBJ_ELF */ + { + allocate_common: + S_SET_VALUE (symbolP, (valueT) size); +#ifdef OBJ_ELF + S_SET_ALIGN (symbolP, temp); + S_SET_SIZE (symbolP, size); +#endif + S_SET_EXTERNAL (symbolP); + S_SET_SEGMENT (symbolP, bfd_com_section_ptr); + } + } + else + { + input_line_pointer++; + /* @@ Some use the dot, some don't. Can we get some consistency?? */ + if (*input_line_pointer == '.') + input_line_pointer++; + /* @@ Some say data, some say bss. */ + if (strncmp (input_line_pointer, "bss\"", 4) + && strncmp (input_line_pointer, "data\"", 5)) + { + while (*--input_line_pointer != '"') + ; + input_line_pointer--; + goto bad_common_segment; + } + while (*input_line_pointer++ != '"') + ; + goto allocate_common; + } + +#ifdef BFD_ASSEMBLER + symbolP->bsym->flags |= BSF_OBJECT; +#endif + + demand_empty_rest_of_line (); + return; + + { + bad_common_segment: + p = input_line_pointer; + while (*p && *p != '\n') + p++; + c = *p; + *p = '\0'; + as_bad (_("bad .common segment %s"), input_line_pointer + 1); + *p = c; + input_line_pointer = p; + ignore_rest_of_line (); + return; + } +} + +/* Handle the .empty pseudo-op. This supresses the warnings about + invalid delay slot usage. */ + +static void +s_empty (ignore) + int ignore; +{ + /* The easy way to implement is to just forget about the last + instruction. */ + last_insn = NULL; +} + +static void +s_seg (ignore) + int ignore; +{ + + if (strncmp (input_line_pointer, "\"text\"", 6) == 0) + { + input_line_pointer += 6; + s_text (0); + return; + } + if (strncmp (input_line_pointer, "\"data\"", 6) == 0) + { + input_line_pointer += 6; + s_data (0); + return; + } + if (strncmp (input_line_pointer, "\"data1\"", 7) == 0) + { + input_line_pointer += 7; + s_data1 (); + return; + } + if (strncmp (input_line_pointer, "\"bss\"", 5) == 0) + { + input_line_pointer += 5; + /* We only support 2 segments -- text and data -- for now, so + things in the "bss segment" will have to go into data for now. + You can still allocate SEG_BSS stuff with .lcomm or .reserve. */ + subseg_set (data_section, 255); /* FIXME-SOMEDAY */ + return; + } + as_bad (_("Unknown segment type")); + demand_empty_rest_of_line (); +} + +static void +s_data1 () +{ + subseg_set (data_section, 1); + demand_empty_rest_of_line (); +} + +static void +s_proc (ignore) + int ignore; +{ + while (!is_end_of_line[(unsigned char) *input_line_pointer]) + { + ++input_line_pointer; + } + ++input_line_pointer; +} + +/* This static variable is set by s_uacons to tell sparc_cons_align + that the expession does not need to be aligned. */ + +static int sparc_no_align_cons = 0; + +/* This handles the unaligned space allocation pseudo-ops, such as + .uaword. .uaword is just like .word, but the value does not need + to be aligned. */ + +static void +s_uacons (bytes) + int bytes; +{ + /* Tell sparc_cons_align not to align this value. */ + sparc_no_align_cons = 1; + cons (bytes); +} + +/* If the --enforce-aligned-data option is used, we require .word, + et. al., to be aligned correctly. We do it by setting up an + rs_align_code frag, and checking in HANDLE_ALIGN to make sure that + no unexpected alignment was introduced. + + The SunOS and Solaris native assemblers enforce aligned data by + default. We don't want to do that, because gcc can deliberately + generate misaligned data if the packed attribute is used. Instead, + we permit misaligned data by default, and permit the user to set an + option to check for it. */ + +void +sparc_cons_align (nbytes) + int nbytes; +{ + int nalign; + char *p; + + /* Only do this if we are enforcing aligned data. */ + if (! enforce_aligned_data) + return; + + if (sparc_no_align_cons) + { + /* This is an unaligned pseudo-op. */ + sparc_no_align_cons = 0; + return; + } + + nalign = log2 (nbytes); + if (nalign == 0) + return; + + assert (nalign > 0); + + if (now_seg == absolute_section) + { + if ((abs_section_offset & ((1 << nalign) - 1)) != 0) + as_bad (_("misaligned data")); + return; + } + + p = frag_var (rs_align_code, 1, 1, (relax_substateT) 0, + (symbolS *) NULL, (offsetT) nalign, (char *) NULL); + + record_alignment (now_seg, nalign); +} + +/* This is where we do the unexpected alignment check. + This is called from HANDLE_ALIGN in tc-sparc.h. */ + +void +sparc_handle_align (fragp) + fragS *fragp; +{ + if (fragp->fr_type == rs_align_code && !fragp->fr_subtype + && fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix != 0) + as_bad_where (fragp->fr_file, fragp->fr_line, _("misaligned data")); + if (fragp->fr_type == rs_align_code && fragp->fr_subtype == 1024) + { + int count = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; + + if (count >= 4 + && !(count & 3) + && count <= 1024 + && !((long)(fragp->fr_literal + fragp->fr_fix) & 3)) + { + unsigned *p = (unsigned *)(fragp->fr_literal + fragp->fr_fix); + int i; + + for (i = 0; i < count; i += 4, p++) + if (INSN_BIG_ENDIAN) + number_to_chars_bigendian ((char *)p, 0x01000000, 4); /* emit nops */ + else + number_to_chars_littleendian ((char *)p, 0x10000000, 4); + + if (SPARC_OPCODE_ARCH_V9_P (max_architecture) && count > 8) + { + char *waddr = &fragp->fr_literal[fragp->fr_fix]; + unsigned wval = (0x30680000 | count >> 2); /* ba,a,pt %xcc, 1f */ + if (INSN_BIG_ENDIAN) + number_to_chars_bigendian (waddr, wval, 4); + else + number_to_chars_littleendian (waddr, wval, 4); + } + fragp->fr_var = count; + } + } +} + +#ifdef OBJ_ELF +/* Some special processing for a Sparc ELF file. */ + +void +sparc_elf_final_processing () +{ + /* Set the Sparc ELF flag bits. FIXME: There should probably be some + sort of BFD interface for this. */ + if (sparc_arch_size == 64) + { + switch (sparc_memory_model) + { + case MM_RMO: + elf_elfheader (stdoutput)->e_flags |= EF_SPARCV9_RMO; + break; + case MM_PSO: + elf_elfheader (stdoutput)->e_flags |= EF_SPARCV9_PSO; + break; + default: + break; + } + } + else if (current_architecture >= SPARC_OPCODE_ARCH_V9) + elf_elfheader (stdoutput)->e_flags |= EF_SPARC_32PLUS; + if (current_architecture == SPARC_OPCODE_ARCH_V9A) + elf_elfheader (stdoutput)->e_flags |= EF_SPARC_SUN_US1; +} +#endif + +/* This is called by emit_expr via TC_CONS_FIX_NEW when creating a + reloc for a cons. We could use the definition there, except that + we want to handle little endian relocs specially. */ + +void +cons_fix_new_sparc (frag, where, nbytes, exp) + fragS *frag; + int where; + unsigned int nbytes; + expressionS *exp; +{ + bfd_reloc_code_real_type r; + + r = (nbytes == 1 ? BFD_RELOC_8 : + (nbytes == 2 ? BFD_RELOC_16 : + (nbytes == 4 ? BFD_RELOC_32 : BFD_RELOC_64))); + + if (target_little_endian_data && nbytes == 4 + && now_seg->flags & SEC_ALLOC) + r = BFD_RELOC_SPARC_REV32; + fix_new_exp (frag, where, (int) nbytes, exp, 0, r); +} + +#ifdef OBJ_ELF +int +elf32_sparc_force_relocation (fixp) + struct fix *fixp; +{ + if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT + || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) + return 1; + + return 0; +} +#endif + |