/* tc-m32r.c -- Assembler for the Mitsubishi M32R.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#include <stdio.h>
#include <ctype.h>
#include "as.h"
-#include "subsegs.h"
+#include "subsegs.h"
#include "symcat.h"
#include "opcodes/m32r-desc.h"
#include "opcodes/m32r-opc.h"
typedef struct sym_link
{
struct sym_link *next;
- symbolS *symbol;
+ symbolS *symbol;
} sym_linkS;
-static sym_linkS *debug_sym_link = (sym_linkS *)0;
-
+static sym_linkS *debug_sym_link = (sym_linkS *) 0;
+
/* Structure to hold all of the different components describing
an individual instruction. */
typedef struct
{
- const CGEN_INSN * insn;
- const CGEN_INSN * orig_insn;
- CGEN_FIELDS fields;
+ const CGEN_INSN *insn;
+ const CGEN_INSN *orig_insn;
+ CGEN_FIELDS fields;
#if CGEN_INT_INSN_P
- CGEN_INSN_INT buffer [1];
+ CGEN_INSN_INT buffer[1];
#define INSN_VALUE(buf) (*(buf))
#else
- unsigned char buffer [CGEN_MAX_INSN_SIZE];
+ unsigned char buffer[CGEN_MAX_INSN_SIZE];
#define INSN_VALUE(buf) (buf)
#endif
- char * addr;
- fragS * frag;
- int num_fixups;
- fixS * fixups [GAS_CGEN_MAX_FIXUPS];
- int indices [MAX_OPERAND_INSTANCES];
- sym_linkS *debug_sym_link;
+ char *addr;
+ fragS *frag;
+ int num_fixups;
+ fixS *fixups[GAS_CGEN_MAX_FIXUPS];
+ int indices[MAX_OPERAND_INSTANCES];
+ sym_linkS *debug_sym_link;
}
m32r_insn;
/* prev_insn.insn is non-null if last insn was a 16 bit insn on a 32 bit
boundary (i.e. was the first of two 16 bit insns). */
-static m32r_insn prev_insn;
+static m32r_insn prev_insn;
/* Non-zero if we've seen a relaxable insn since the last 32 bit
alignment request. */
This flag does not apply to them. */
static int m32r_relax;
-#if 0 /* not supported yet */
+#if 0
+/* Not supported yet. */
/* If non-NULL, pointer to cpu description file to read.
This allows runtime additions to the assembler. */
-static const char * m32r_cpu_desc;
+static const char *m32r_cpu_desc;
#endif
/* Non-zero if warn when a high/shigh reloc has no matching low reloc.
shouldn't assume or require it to). */
static int warn_unmatched_high = 0;
+/* Non-zero if -m32rx has been specified, in which case support for the
+ extended M32RX instruction set should be enabled. */
+static int enable_m32rx = 0;
+
+/* Non-zero if -m32rx -hidden has been specified, in which case support for
+ the special M32RX instruction set should be enabled. */
+static int enable_special = 0;
+
+/* Non-zero if the programmer should be warned when an explicit parallel
+ instruction might have constraint violations. */
+static int warn_explicit_parallel_conflicts = 1;
-/* stuff for .scomm symbols. */
+/* Non-zero if insns can be made parallel. */
+static int optimize;
+
+/* Stuff for .scomm symbols. */
static segT sbss_section;
static asection scom_section;
static asymbol scom_symbol;
struct m32r_hi_fixup
{
- struct m32r_hi_fixup * next; /* Next HI fixup. */
- fixS * fixp; /* This fixup. */
- segT seg; /* The section this fixup is in. */
+ /* Next HI fixup. */
+ struct m32r_hi_fixup *next;
+
+ /* This fixup. */
+ fixS *fixp;
+ /* The section this fixup is in. */
+ segT seg;
};
/* The list of unmatched HI relocs. */
-static struct m32r_hi_fixup * m32r_hi_fixup_list;
-
+static struct m32r_hi_fixup *m32r_hi_fixup_list;
\f
+static void
+allow_m32rx (on)
+ int on;
+{
+ enable_m32rx = on;
+
+ if (stdoutput != NULL)
+ bfd_set_arch_mach (stdoutput, TARGET_ARCH,
+ enable_m32rx ? bfd_mach_m32rx : bfd_mach_m32r);
+}
\f
-#define M32R_SHORTOPTS ""
-const char * md_shortopts = M32R_SHORTOPTS;
+#define M32R_SHORTOPTS "O"
+
+const char *md_shortopts = M32R_SHORTOPTS;
struct option md_longopts[] =
{
-
+#define OPTION_M32R (OPTION_MD_BASE)
+#define OPTION_M32RX (OPTION_M32R + 1)
+#define OPTION_WARN_PARALLEL (OPTION_M32RX + 1)
+#define OPTION_NO_WARN_PARALLEL (OPTION_WARN_PARALLEL + 1)
+#define OPTION_SPECIAL (OPTION_NO_WARN_PARALLEL + 1)
+#define OPTION_WARN_UNMATCHED (OPTION_SPECIAL + 1)
+#define OPTION_NO_WARN_UNMATCHED (OPTION_WARN_UNMATCHED + 1)
+ {"m32r", no_argument, NULL, OPTION_M32R},
+ {"m32rx", no_argument, NULL, OPTION_M32RX},
+ {"warn-explicit-parallel-conflicts", no_argument, NULL, OPTION_WARN_PARALLEL},
+ {"Wp", no_argument, NULL, OPTION_WARN_PARALLEL},
+ {"no-warn-explicit-parallel-conflicts", no_argument, NULL, OPTION_NO_WARN_PARALLEL},
+ {"Wnp", no_argument, NULL, OPTION_NO_WARN_PARALLEL},
+ {"hidden", no_argument, NULL, OPTION_SPECIAL},
/* Sigh. I guess all warnings must now have both variants. */
-#define OPTION_WARN_UNMATCHED (OPTION_MD_BASE + 4)
- {"warn-unmatched-high", OPTION_WARN_UNMATCHED},
- {"Wuh", OPTION_WARN_UNMATCHED},
-#define OPTION_NO_WARN_UNMATCHED (OPTION_MD_BASE + 5)
- {"no-warn-unmatched-high", OPTION_WARN_UNMATCHED},
- {"Wnuh", OPTION_WARN_UNMATCHED},
-
-#if 0 /* not supported yet */
-#define OPTION_RELAX (OPTION_MD_BASE + 6)
+ {"warn-unmatched-high", no_argument, NULL, OPTION_WARN_UNMATCHED},
+ {"Wuh", no_argument, NULL, OPTION_WARN_UNMATCHED},
+ {"no-warn-unmatched-high", no_argument, NULL, OPTION_NO_WARN_UNMATCHED},
+ {"Wnuh", no_argument, NULL, OPTION_NO_WARN_UNMATCHED},
+
+#if 0
+ /* Not supported yet. */
+#define OPTION_RELAX (OPTION_NO_WARN_UNMATCHED + 1)
+#define OPTION_CPU_DESC (OPTION_RELAX + 1)
{"relax", no_argument, NULL, OPTION_RELAX},
-#define OPTION_CPU_DESC (OPTION_MD_BASE + 7)
{"cpu-desc", required_argument, NULL, OPTION_CPU_DESC},
#endif
-
{NULL, no_argument, NULL, 0}
};
+
size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (c, arg)
- int c;
- char * arg;
+ int c;
+ char *arg;
{
switch (c)
{
+ case 'O':
+ optimize = 1;
+ break;
+
+ case OPTION_M32R:
+ allow_m32rx (0);
+ break;
+
+ case OPTION_M32RX:
+ allow_m32rx (1);
+ break;
+
+ case OPTION_WARN_PARALLEL:
+ warn_explicit_parallel_conflicts = 1;
+ break;
+
+ case OPTION_NO_WARN_PARALLEL:
+ warn_explicit_parallel_conflicts = 0;
+ break;
+
+ case OPTION_SPECIAL:
+ if (enable_m32rx)
+ enable_special = 1;
+ else
+ {
+ /* Pretend that we do not recognise this option. */
+ as_bad (_("Unrecognised option: -hidden"));
+ return 0;
+ }
+ break;
case OPTION_WARN_UNMATCHED:
warn_unmatched_high = 1;
case OPTION_NO_WARN_UNMATCHED:
warn_unmatched_high = 0;
break;
-
-#if 0 /* not supported yet */
+
+#if 0
+ /* Not supported yet. */
case OPTION_RELAX:
m32r_relax = 1;
break;
default:
return 0;
}
+
return 1;
}
void
md_show_usage (stream)
- FILE * stream;
+ FILE *stream;
{
fprintf (stream, _(" M32R specific command line options:\n"));
+ fprintf (stream, _("\
+ -m32r disable support for the m32rx instruction set\n"));
+ fprintf (stream, _("\
+ -m32rx support the extended m32rx instruction set\n"));
+ fprintf (stream, _("\
+ -O try to combine instructions in parallel\n"));
+
+ fprintf (stream, _("\
+ -warn-explicit-parallel-conflicts warn when parallel instructions\n"));
+ fprintf (stream, _("\
+ violate contraints\n"));
+ fprintf (stream, _("\
+ -no-warn-explicit-parallel-conflicts do not warn when parallel\n"));
+ fprintf (stream, _("\
+ instructions violate contraints\n"));
+ fprintf (stream, _("\
+ -Wp synonym for -warn-explicit-parallel-conflicts\n"));
+ fprintf (stream, _("\
+ -Wnp synonym for -no-warn-explicit-parallel-conflicts\n"));
fprintf (stream, _("\
-warn-unmatched-high warn when an (s)high reloc has no matching low reloc\n"));
fprintf (stream, _("\
-cpu-desc provide runtime cpu description file\n"));
#endif
-}
+}
static void fill_insn PARAMS ((int));
static void m32r_scomm PARAMS ((int));
{ "fillinsn", fill_insn, 0 },
{ "scomm", m32r_scomm, 0 },
{ "debugsym", debug_sym, 0 },
+ /* Not documented as so far there is no need for them.... */
+ { "m32r", allow_m32rx, 0 },
+ { "m32rx", allow_m32rx, 1 },
{ NULL, NULL, 0 }
};
/* FIXME: Should be machine generated. */
#define NOP_INSN 0x7000
-#define PAR_NOP_INSN 0xf000 /* can only be used in 2nd slot */
+#define PAR_NOP_INSN 0xf000 /* Can only be used in 2nd slot. */
/* When we align the .text section, insert the correct NOP pattern.
N is the power of 2 alignment. LEN is the length of pattern FILL.
int
m32r_do_align (n, fill, len, max)
- int n;
- const char * fill;
- int len;
- int max;
+ int n;
+ const char *fill;
+ int len;
+ int max;
{
/* Only do this if the fill pattern wasn't specified. */
if (fill == NULL
- && (now_seg->flags & SEC_CODE) != 0
+ && subseg_text_p (now_seg)
/* Only do this special handling if aligning to at least a
4 byte boundary. */
&& n > 1
frag_align_pattern (n, multi_nop_pattern, sizeof multi_nop_pattern,
max ? max - 2 : 0);
}
-
+
prev_insn.insn = NULL;
return 1;
}
name = input_line_pointer;
delim = get_symbol_end ();
end_name = input_line_pointer;
-
+
if ((symbolP = symbol_find (name)) == NULL
&& (symbolP = md_undefined_symbol (name)) == NULL)
{
link->symbol = symbolP;
link->next = debug_sym_link;
debug_sym_link = link;
- symbolP->local = 1;
+ symbol_get_obj (symbolP)->local = 1;
}
*end_name = delim;
return;
(void) m32r_do_align (align, NULL, 0, 0);
- for (; syms != (sym_linkS *)0; syms = next_syms)
+ for (; syms != (sym_linkS *) 0; syms = next_syms)
{
symbolS *symbolP = syms->symbol;
next_syms = syms->next;
input_line_pointer = ".\n";
pseudo_set (symbolP);
- free ((char *)syms);
+ free ((char *) syms);
}
input_line_pointer = save_input_line;
{
if (prev_seg != NULL)
{
- segT seg = now_seg;
+ segT seg = now_seg;
subsegT subseg = now_subseg;
subseg_set (prev_seg, prev_subseg);
-
+
fill_insn (0);
subseg_set (seg, subseg);
if (done && debug_sym_link)
{
expand_debug_syms (debug_sym_link, 1);
- debug_sym_link = (sym_linkS *)0;
+ debug_sym_link = (sym_linkS *) 0;
}
return 1;
md_begin ()
{
flagword applicable;
- segT seg;
- subsegT subseg;
+ segT seg;
+ subsegT subseg;
/* Initialize the `cgen' interface. */
-
+
/* Set the machine number and endian. */
gas_cgen_cpu_desc = m32r_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
CGEN_CPU_OPEN_ENDIAN,
/* This is a callback from cgen to gas to parse operands. */
cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
-#if 0 /* not supported yet */
+#if 0
+ /* Not supported yet. */
/* If a runtime cpu description file was provided, parse it. */
if (m32r_cpu_desc != NULL)
{
- const char * errmsg;
+ const char *errmsg;
errmsg = cgen_read_cpu_file (gas_cgen_cpu_desc, m32r_cpu_desc);
if (errmsg != NULL)
/* The sbss section is for local .scomm symbols. */
sbss_section = subseg_new (".sbss", 0);
-
+
/* This is copied from perform_an_assembly_pass. */
applicable = bfd_applicable_section_flags (stdoutput);
bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
-
-#if 0 /* What does this do? [see perform_an_assembly_pass] */
+
+#if 0
+ /* What does this do? [see perform_an_assembly_pass] */
seg_info (bss_section)->bss = 1;
#endif
but with the name .scommon. */
scom_section = bfd_com_section;
scom_section.name = ".scommon";
- scom_section.output_section = & scom_section;
- scom_section.symbol = & scom_symbol;
- scom_section.symbol_ptr_ptr = & scom_section.symbol;
- scom_symbol = * bfd_com_section.symbol;
+ scom_section.output_section = &scom_section;
+ scom_section.symbol = &scom_symbol;
+ scom_section.symbol_ptr_ptr = &scom_section.symbol;
+ scom_symbol = *bfd_com_section.symbol;
scom_symbol.name = ".scommon";
- scom_symbol.section = & scom_section;
+ scom_symbol.section = &scom_section;
+ allow_m32rx (enable_m32rx);
}
+#define OPERAND_IS_COND_BIT(operand, indices, index) \
+ ((operand)->hw_type == HW_H_COND \
+ || ((operand)->hw_type == HW_H_PSW) \
+ || ((operand)->hw_type == HW_H_CR \
+ && (indices [index] == 0 || indices [index] == 1)))
+
+/* Returns true if an output of instruction 'a' is referenced by an operand
+ of instruction 'b'. If 'check_outputs' is true then b's outputs are
+ checked, otherwise its inputs are examined. */
+
+static int
+first_writes_to_seconds_operands (a, b, check_outputs)
+ m32r_insn *a;
+ m32r_insn *b;
+ const int check_outputs;
+{
+ const CGEN_OPINST *a_operands = CGEN_INSN_OPERANDS (a->insn);
+ const CGEN_OPINST *b_ops = CGEN_INSN_OPERANDS (b->insn);
+ int a_index;
+
+ /* If at least one of the instructions takes no operands, then there is
+ nothing to check. There really are instructions without operands,
+ eg 'nop'. */
+ if (a_operands == NULL || b_ops == NULL)
+ return 0;
+ /* Scan the operand list of 'a' looking for an output operand. */
+ for (a_index = 0;
+ a_operands->type != CGEN_OPINST_END;
+ a_index ++, a_operands ++)
+ {
+ if (a_operands->type == CGEN_OPINST_OUTPUT)
+ {
+ int b_index;
+ const CGEN_OPINST *b_operands = b_ops;
+
+ /* Special Case:
+ The Condition bit 'C' is a shadow of the CBR register (control
+ register 1) and also a shadow of bit 31 of the program status
+ word (control register 0). For now this is handled here, rather
+ than by cgen.... */
+
+ if (OPERAND_IS_COND_BIT (a_operands, a->indices, a_index))
+ {
+ /* Scan operand list of 'b' looking for another reference to the
+ condition bit, which goes in the right direction. */
+ for (b_index = 0;
+ b_operands->type != CGEN_OPINST_END;
+ b_index++, b_operands++)
+ {
+ if ((b_operands->type
+ == (check_outputs
+ ? CGEN_OPINST_OUTPUT
+ : CGEN_OPINST_INPUT))
+ && OPERAND_IS_COND_BIT (b_operands, b->indices, b_index))
+ return 1;
+ }
+ }
+ else
+ {
+ /* Scan operand list of 'b' looking for an operand that
+ references the same hardware element, and which goes in the
+ right direction. */
+ for (b_index = 0;
+ b_operands->type != CGEN_OPINST_END;
+ b_index++, b_operands++)
+ {
+ if ((b_operands->type
+ == (check_outputs
+ ? CGEN_OPINST_OUTPUT
+ : CGEN_OPINST_INPUT))
+ && (b_operands->hw_type == a_operands->hw_type)
+ && (a->indices[a_index] == b->indices[b_index]))
+ return 1;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+/* Returns true if the insn can (potentially) alter the program counter. */
+
+static int
+writes_to_pc (a)
+ m32r_insn *a;
+{
+#if 0
+ /* Once PC operands are working.... */
+ const CGEN_OPINST *a_operands == CGEN_INSN_OPERANDS (gas_cgen_cpu_desc,
+ a->insn);
+
+ if (a_operands == NULL)
+ return 0;
+
+ while (a_operands->type != CGEN_OPINST_END)
+ {
+ if (a_operands->operand != NULL
+ && CGEN_OPERAND_INDEX (gas_cgen_cpu_desc,
+ a_operands->operand) == M32R_OPERAND_PC)
+ return 1;
+
+ a_operands++;
+ }
+#else
+ if (CGEN_INSN_ATTR_VALUE (a->insn, CGEN_INSN_UNCOND_CTI)
+ || CGEN_INSN_ATTR_VALUE (a->insn, CGEN_INSN_COND_CTI))
+ return 1;
+#endif
+ return 0;
+}
+
+/* Return NULL if the two 16 bit insns can be executed in parallel.
+ Otherwise return a pointer to an error message explaining why not. */
+
+static const char *
+can_make_parallel (a, b)
+ m32r_insn *a;
+ m32r_insn *b;
+{
+ PIPE_ATTR a_pipe;
+ PIPE_ATTR b_pipe;
+
+ /* Make sure the instructions are the right length. */
+ if (CGEN_FIELDS_BITSIZE (&a->fields) != 16
+ || CGEN_FIELDS_BITSIZE (&b->fields) != 16)
+ abort ();
+
+ if (first_writes_to_seconds_operands (a, b, true))
+ return _("Instructions write to the same destination register.");
+
+ a_pipe = CGEN_INSN_ATTR_VALUE (a->insn, CGEN_INSN_PIPE);
+ b_pipe = CGEN_INSN_ATTR_VALUE (b->insn, CGEN_INSN_PIPE);
+
+ /* Make sure that the instructions use the correct execution pipelines. */
+ if (a_pipe == PIPE_NONE
+ || b_pipe == PIPE_NONE)
+ return _("Instructions do not use parallel execution pipelines.");
+
+ /* Leave this test for last, since it is the only test that can
+ go away if the instructions are swapped, and we want to make
+ sure that any other errors are detected before this happens. */
+ if (a_pipe == PIPE_S
+ || b_pipe == PIPE_O)
+ return _("Instructions share the same execution pipeline");
+
+ return NULL;
+}
+
+/* Force the top bit of the second 16-bit insn to be set. */
+
+static void
+make_parallel (buffer)
+ CGEN_INSN_BYTES_PTR buffer;
+{
+#if CGEN_INT_INSN_P
+ *buffer |= 0x8000;
+#else
+ buffer[CGEN_CPU_ENDIAN (gas_cgen_cpu_desc) == CGEN_ENDIAN_BIG ? 0 : 1]
+ |= 0x80;
+#endif
+}
+
+/* Same as make_parallel except buffer contains the bytes in target order. */
+
+static void
+target_make_parallel (buffer)
+ char *buffer;
+{
+ buffer[CGEN_CPU_ENDIAN (gas_cgen_cpu_desc) == CGEN_ENDIAN_BIG ? 0 : 1]
+ |= 0x80;
+}
+
+/* Assemble two instructions with an explicit parallel operation (||) or
+ sequential operation (->). */
+
+static void
+assemble_two_insns (str, str2, parallel_p)
+ char *str;
+ char *str2;
+ int parallel_p;
+{
+ char *str3;
+ m32r_insn first;
+ m32r_insn second;
+ char *errmsg;
+ char save_str2 = *str2;
+
+ /* Seperate the two instructions. */
+ *str2 = 0;
+
+ /* Make sure the two insns begin on a 32 bit boundary.
+ This is also done for the serial case (foo -> bar), relaxing doesn't
+ affect insns written like this.
+ Note that we must always do this as we can't assume anything about
+ whether we're currently on a 32 bit boundary or not. Relaxing may
+ change this. */
+ fill_insn (0);
+
+ first.debug_sym_link = debug_sym_link;
+ debug_sym_link = (sym_linkS *) 0;
+
+ /* Parse the first instruction. */
+ if (! (first.insn = m32r_cgen_assemble_insn
+ (gas_cgen_cpu_desc, str, & first.fields, first.buffer, & errmsg)))
+ {
+ as_bad (errmsg);
+ return;
+ }
+
+ /* Check it. */
+ if (CGEN_FIELDS_BITSIZE (&first.fields) != 16)
+ {
+ /* xgettext:c-format */
+ as_bad (_("not a 16 bit instruction '%s'"), str);
+ return;
+ }
+ else if (! enable_special
+ && CGEN_INSN_ATTR_VALUE (first.insn, CGEN_INSN_SPECIAL))
+ {
+ /* xgettext:c-format */
+ as_bad (_("unknown instruction '%s'"), str);
+ return;
+ }
+ else if (! enable_m32rx
+ /* FIXME: Need standard macro to perform this test. */
+ && (CGEN_INSN_ATTR_VALUE (first.insn, CGEN_INSN_MACH)
+ == (1 << MACH_M32RX)))
+ {
+ /* xgettext:c-format */
+ as_bad (_("instruction '%s' is for the M32RX only"), str);
+ return;
+ }
+
+ /* Check to see if this is an allowable parallel insn. */
+ if (parallel_p
+ && CGEN_INSN_ATTR_VALUE (first.insn, CGEN_INSN_PIPE) == PIPE_NONE)
+ {
+ /* xgettext:c-format */
+ as_bad (_("instruction '%s' cannot be executed in parallel."), str);
+ return;
+ }
+
+ /* Restore the original assembly text, just in case it is needed. */
+ *str2 = save_str2;
+
+ /* Save the original string pointer. */
+ str3 = str;
+
+ /* Advanced past the parsed string. */
+ str = str2 + 2;
+
+ /* Remember the entire string in case it is needed for error
+ messages. */
+ str2 = str3;
+
+ /* Convert the opcode to lower case. */
+ {
+ char *s2 = str;
+
+ while (isspace (*s2++))
+ continue;
+
+ --s2;
+
+ while (isalnum (*s2))
+ {
+ if (isupper ((unsigned char) *s2))
+ *s2 = tolower (*s2);
+ s2++;
+ }
+ }
+
+ /* Preserve any fixups that have been generated and reset the list
+ to empty. */
+ gas_cgen_save_fixups ();
+
+ /* Get the indices of the operands of the instruction. */
+ /* FIXME: CGEN_FIELDS is already recorded, but relying on that fact
+ doesn't seem right. Perhaps allow passing fields like we do insn. */
+ /* FIXME: ALIAS insns do not have operands, so we use this function
+ to find the equivalent insn and overwrite the value stored in our
+ structure. We still need the original insn, however, since this
+ may have certain attributes that are not present in the unaliased
+ version (eg relaxability). When aliases behave differently this
+ may have to change. */
+ first.orig_insn = first.insn;
+ {
+ CGEN_FIELDS tmp_fields;
+ first.insn = cgen_lookup_get_insn_operands
+ (gas_cgen_cpu_desc, NULL, INSN_VALUE (first.buffer), NULL, 16,
+ first.indices, &tmp_fields);
+ }
+
+ if (first.insn == NULL)
+ as_fatal (_("internal error: lookup/get operands failed"));
+
+ second.debug_sym_link = NULL;
+
+ /* Parse the second instruction. */
+ if (! (second.insn = m32r_cgen_assemble_insn
+ (gas_cgen_cpu_desc, str, & second.fields, second.buffer, & errmsg)))
+ {
+ as_bad (errmsg);
+ return;
+ }
+
+ /* Check it. */
+ if (CGEN_FIELDS_BITSIZE (&second.fields) != 16)
+ {
+ /* xgettext:c-format */
+ as_bad (_("not a 16 bit instruction '%s'"), str);
+ return;
+ }
+ else if (! enable_special
+ && CGEN_INSN_ATTR_VALUE (second.insn, CGEN_INSN_SPECIAL))
+ {
+ /* xgettext:c-format */
+ as_bad (_("unknown instruction '%s'"), str);
+ return;
+ }
+ else if (! enable_m32rx
+ && CGEN_INSN_ATTR_VALUE (second.insn, CGEN_INSN_MACH) == (1 << MACH_M32RX))
+ {
+ /* xgettext:c-format */
+ as_bad (_("instruction '%s' is for the M32RX only"), str);
+ return;
+ }
+
+ /* Check to see if this is an allowable parallel insn. */
+ if (parallel_p
+ && CGEN_INSN_ATTR_VALUE (second.insn, CGEN_INSN_PIPE) == PIPE_NONE)
+ {
+ /* xgettext:c-format */
+ as_bad (_("instruction '%s' cannot be executed in parallel."), str);
+ return;
+ }
+
+ if (parallel_p && ! enable_m32rx)
+ {
+ if (CGEN_INSN_NUM (first.insn) != M32R_INSN_NOP
+ && CGEN_INSN_NUM (second.insn) != M32R_INSN_NOP)
+ {
+ /* xgettext:c-format */
+ as_bad (_("'%s': only the NOP instruction can be issued in parallel on the m32r"), str2);
+ return;
+ }
+ }
+
+ /* Get the indices of the operands of the instruction. */
+ second.orig_insn = second.insn;
+ {
+ CGEN_FIELDS tmp_fields;
+ second.insn = cgen_lookup_get_insn_operands
+ (gas_cgen_cpu_desc, NULL, INSN_VALUE (second.buffer), NULL, 16,
+ second.indices, &tmp_fields);
+ }
+
+ if (second.insn == NULL)
+ as_fatal (_("internal error: lookup/get operands failed"));
+
+ /* We assume that if the first instruction writes to a register that is
+ read by the second instruction it is because the programmer intended
+ this to happen, (after all they have explicitly requested that these
+ two instructions be executed in parallel). Although if the global
+ variable warn_explicit_parallel_conflicts is true then we do generate
+ a warning message. Similarly we assume that parallel branch and jump
+ instructions are deliberate and should not produce errors. */
+
+ if (parallel_p && warn_explicit_parallel_conflicts)
+ {
+ if (first_writes_to_seconds_operands (&first, &second, false))
+ /* xgettext:c-format */
+ as_warn (_("%s: output of 1st instruction is the same as an input to 2nd instruction - is this intentional ?"), str2);
+
+ if (first_writes_to_seconds_operands (&second, &first, false))
+ /* xgettext:c-format */
+ as_warn (_("%s: output of 2nd instruction is the same as an input to 1st instruction - is this intentional ?"), str2);
+ }
+
+ if (!parallel_p
+ || (errmsg = (char *) can_make_parallel (&first, &second)) == NULL)
+ {
+ /* Get the fixups for the first instruction. */
+ gas_cgen_swap_fixups ();
+
+ /* Write it out. */
+ expand_debug_syms (first.debug_sym_link, 1);
+ gas_cgen_finish_insn (first.orig_insn, first.buffer,
+ CGEN_FIELDS_BITSIZE (&first.fields), 0, NULL);
+
+ /* Force the top bit of the second insn to be set. */
+ if (parallel_p)
+ make_parallel (second.buffer);
+
+ /* Get its fixups. */
+ gas_cgen_restore_fixups ();
+
+ /* Write it out. */
+ expand_debug_syms (second.debug_sym_link, 1);
+ gas_cgen_finish_insn (second.orig_insn, second.buffer,
+ CGEN_FIELDS_BITSIZE (&second.fields), 0, NULL);
+ }
+ /* Try swapping the instructions to see if they work that way. */
+ else if (can_make_parallel (&second, &first) == NULL)
+ {
+ /* Write out the second instruction first. */
+ expand_debug_syms (second.debug_sym_link, 1);
+ gas_cgen_finish_insn (second.orig_insn, second.buffer,
+ CGEN_FIELDS_BITSIZE (&second.fields), 0, NULL);
+
+ /* Force the top bit of the first instruction to be set. */
+ make_parallel (first.buffer);
+
+ /* Get the fixups for the first instruction. */
+ gas_cgen_restore_fixups ();
+
+ /* Write out the first instruction. */
+ expand_debug_syms (first.debug_sym_link, 1);
+ gas_cgen_finish_insn (first.orig_insn, first.buffer,
+ CGEN_FIELDS_BITSIZE (&first.fields), 0, NULL);
+ }
+ else
+ {
+ as_bad ("'%s': %s", str2, errmsg);
+ return;
+ }
+
+ /* Set these so m32r_fill_insn can use them. */
+ prev_seg = now_seg;
+ prev_subseg = now_subseg;
+}
void
md_assemble (str)
- char * str;
+ char *str;
{
m32r_insn insn;
- char * errmsg;
- char * str2 = NULL;
+ char *errmsg;
+ char *str2 = NULL;
/* Initialize GAS's cgen interface for a new instruction. */
gas_cgen_init_parse ();
-
+ /* Look for a parallel instruction seperator. */
+ if ((str2 = strstr (str, "||")) != NULL)
+ {
+ assemble_two_insns (str, str2, 1);
+ return;
+ }
+
+ /* Also look for a sequential instruction seperator. */
+ if ((str2 = strstr (str, "->")) != NULL)
+ {
+ assemble_two_insns (str, str2, 0);
+ return;
+ }
+
insn.debug_sym_link = debug_sym_link;
- debug_sym_link = (sym_linkS *)0;
+ debug_sym_link = (sym_linkS *) 0;
insn.insn = m32r_cgen_assemble_insn
- (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
-
+ (gas_cgen_cpu_desc, str, &insn.fields, insn.buffer, & errmsg);
+
if (!insn.insn)
{
as_bad (errmsg);
return;
}
-
+ if (! enable_special
+ && CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_SPECIAL))
+ {
+ /* xgettext:c-format */
+ as_bad (_("unknown instruction '%s'"), str);
+ return;
+ }
+ else if (! enable_m32rx
+ && CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_MACH) == (1 << MACH_M32RX))
+ {
+ /* xgettext:c-format */
+ as_bad (_("instruction '%s' is for the M32RX only"), str);
+ return;
+ }
+
if (CGEN_INSN_BITSIZE (insn.insn) == 32)
{
/* 32 bit insns must live on 32 bit boundaries. */
/* Doesn't really matter what we pass for RELAX_P here. */
gas_cgen_finish_insn (insn.insn, insn.buffer,
- CGEN_FIELDS_BITSIZE (& insn.fields), 1, NULL);
+ CGEN_FIELDS_BITSIZE (&insn.fields), 1, NULL);
}
else
{
int on_32bit_boundary_p;
+ int swap = false;
if (CGEN_INSN_BITSIZE (insn.insn) != 16)
- abort();
+ abort ();
insn.orig_insn = insn.insn;
+ /* If the previous insn was relaxable, then it may be expanded
+ to fill the current 16 bit slot. Emit a NOP here to occupy
+ this slot, so that we can start at optimizing at a 32 bit
+ boundary. */
+ if (prev_insn.insn && seen_relaxable_p && optimize)
+ fill_insn (0);
+
+ if (enable_m32rx)
+ {
+ /* Get the indices of the operands of the instruction.
+ FIXME: See assemble_parallel for notes on orig_insn. */
+ {
+ CGEN_FIELDS tmp_fields;
+ insn.insn = cgen_lookup_get_insn_operands
+ (gas_cgen_cpu_desc, NULL, INSN_VALUE (insn.buffer), NULL,
+ 16, insn.indices, &tmp_fields);
+ }
+
+ if (insn.insn == NULL)
+ as_fatal (_("internal error: lookup/get operands failed"));
+ }
+
/* Compute whether we're on a 32 bit boundary or not.
prev_insn.insn is NULL when we're on a 32 bit boundary. */
on_32bit_boundary_p = prev_insn.insn == NULL;
+ /* Look to see if this instruction can be combined with the
+ previous instruction to make one, parallel, 32 bit instruction.
+ If the previous instruction (potentially) changed the flow of
+ program control, then it cannot be combined with the current
+ instruction. If the current instruction is relaxable, then it
+ might be replaced with a longer version, so we cannot combine it.
+ Also if the output of the previous instruction is used as an
+ input to the current instruction then it cannot be combined.
+ Otherwise call can_make_parallel() with both orderings of the
+ instructions to see if they can be combined. */
+ if (! on_32bit_boundary_p
+ && enable_m32rx
+ && optimize
+ && CGEN_INSN_ATTR_VALUE (insn.orig_insn, CGEN_INSN_RELAXABLE) == 0
+ && ! writes_to_pc (&prev_insn)
+ && ! first_writes_to_seconds_operands (&prev_insn, &insn, false))
+ {
+ if (can_make_parallel (&prev_insn, &insn) == NULL)
+ make_parallel (insn.buffer);
+ else if (can_make_parallel (&insn, &prev_insn) == NULL)
+ swap = true;
+ }
expand_debug_syms (insn.debug_sym_link, 1);
frag_grow (4);
gas_cgen_finish_insn (insn.orig_insn, insn.buffer,
- CGEN_FIELDS_BITSIZE (& insn.fields),
- 1 /*relax_p*/, &fi);
+ CGEN_FIELDS_BITSIZE (&insn.fields),
+ 1 /* relax_p */, &fi);
insn.addr = fi.addr;
insn.frag = fi.frag;
insn.num_fixups = fi.num_fixups;
insn.fixups[i] = fi.fixups[i];
}
+ if (swap)
+ {
+ int i, tmp;
+
+#define SWAP_BYTES(a,b) tmp = a; a = b; b = tmp
+
+ /* Swap the two insns */
+ SWAP_BYTES (prev_insn.addr[0], insn.addr[0]);
+ SWAP_BYTES (prev_insn.addr[1], insn.addr[1]);
+
+ target_make_parallel (insn.addr);
+
+ /* Swap any relaxable frags recorded for the two insns. */
+ /* FIXME: Clarify. relaxation precludes parallel insns */
+ if (prev_insn.frag->fr_opcode == prev_insn.addr)
+ prev_insn.frag->fr_opcode = insn.addr;
+ else if (insn.frag->fr_opcode == insn.addr)
+ insn.frag->fr_opcode = prev_insn.addr;
+
+ /* Update the addresses in any fixups.
+ Note that we don't have to handle the case where each insn is in
+ a different frag as we ensure they're in the same frag above. */
+ for (i = 0; i < prev_insn.num_fixups; ++i)
+ prev_insn.fixups[i]->fx_where += 2;
+ for (i = 0; i < insn.num_fixups; ++i)
+ insn.fixups[i]->fx_where -= 2;
+ }
/* Keep track of whether we've seen a pair of 16 bit insns.
prev_insn.insn is NULL when we're on a 32 bit boundary. */
prev_insn = insn;
else
prev_insn.insn = NULL;
-
+
/* If the insn needs the following one to be on a 32 bit boundary
(e.g. subroutine calls), fill this insn's slot. */
if (on_32bit_boundary_p
/* The syntax in the manual says constants begin with '#'.
We just ignore it. */
-void
+void
md_operand (expressionP)
- expressionS * expressionP;
+ expressionS *expressionP;
{
- if (* input_line_pointer == '#')
+ if (*input_line_pointer == '#')
{
- input_line_pointer ++;
+ input_line_pointer++;
expression (expressionP);
}
}
valueT
md_section_align (segment, size)
- segT segment;
+ segT segment;
valueT size;
{
int align = bfd_get_section_alignment (stdoutput, segment);
symbolS *
md_undefined_symbol (name)
- char * name;
+ char *name;
{
return 0;
}
/* .scomm pseudo-op handler.
This is a new pseudo-op to handle putting objects in .scommon.
- By doing this the linker won't need to do any work and more importantly
- it removes the implicit -G arg necessary to correctly link the object file.
-*/
+ By doing this the linker won't need to do any work,
+ and more importantly it removes the implicit -G arg necessary to
+ correctly link the object file. */
static void
m32r_scomm (ignore)
int ignore;
{
- register char * name;
- register char c;
- register char * p;
- offsetT size;
- register symbolS * symbolP;
- offsetT align;
- int align2;
+ register char *name;
+ register char c;
+ register char *p;
+ offsetT size;
+ register symbolS *symbolP;
+ offsetT align;
+ int align2;
name = input_line_pointer;
c = get_symbol_end ();
- /* just after name is now '\0' */
+ /* Just after name is now '\0'. */
p = input_line_pointer;
- * p = c;
+ *p = c;
SKIP_WHITESPACE ();
- if (* input_line_pointer != ',')
+ if (*input_line_pointer != ',')
{
as_bad (_("Expected comma after symbol-name: rest of line ignored."));
ignore_rest_of_line ();
return;
}
- input_line_pointer ++; /* skip ',' */
+ /* Skip ','. */
+ input_line_pointer++;
if ((size = get_absolute_expression ()) < 0)
{
- /* xgettext:c-format */
+ /* xgettext:c-format */
as_warn (_(".SCOMMon length (%ld.) <0! Ignored."), (long) size);
ignore_rest_of_line ();
return;
}
/* The third argument to .scomm is the alignment. */
- if (* input_line_pointer != ',')
+ if (*input_line_pointer != ',')
align = 8;
else
{
- ++ input_line_pointer;
+ ++input_line_pointer;
align = get_absolute_expression ();
if (align <= 0)
{
align = 8;
}
}
+
/* Convert to a power of 2 alignment. */
if (align)
{
- for (align2 = 0; (align & 1) == 0; align >>= 1, ++ align2)
+ for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2)
continue;
if (align != 1)
{
else
align2 = 0;
- * p = 0;
+ *p = 0;
symbolP = symbol_find_or_make (name);
- * p = c;
+ *p = c;
if (S_IS_DEFINED (symbolP))
{
- /* xgettext:c-format */
+ /* xgettext:c-format */
as_bad (_("Ignoring attempt to re-define symbol `%s'."),
S_GET_NAME (symbolP));
ignore_rest_of_line ();
if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
{
- /* xgettext:c-format */
+ /* xgettext:c-format */
as_bad (_("Length of .scomm \"%s\" is already %ld. Not changed to %ld."),
S_GET_NAME (symbolP),
(long) S_GET_VALUE (symbolP),
return;
}
- if (symbolP->local)
+ if (symbol_get_obj (symbolP)->local)
{
- segT old_sec = now_seg;
- int old_subsec = now_subseg;
- char * pfrag;
+ segT old_sec = now_seg;
+ int old_subsec = now_subseg;
+ char *pfrag;
record_alignment (sbss_section, align2);
subseg_set (sbss_section, 0);
-
+
if (align2)
frag_align (align2, 0, 0);
-
+
if (S_GET_SEGMENT (symbolP) == sbss_section)
- symbolP->sy_frag->fr_symbol = 0;
-
- symbolP->sy_frag = frag_now;
-
+ symbol_get_frag (symbolP)->fr_symbol = 0;
+
+ symbol_set_frag (symbolP, frag_now);
+
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
(char *) 0);
- * pfrag = 0;
+ *pfrag = 0;
S_SET_SIZE (symbolP, size);
S_SET_SEGMENT (symbolP, sbss_section);
S_CLEAR_EXTERNAL (symbolP);
S_SET_VALUE (symbolP, (valueT) size);
S_SET_ALIGN (symbolP, align2);
S_SET_EXTERNAL (symbolP);
- S_SET_SEGMENT (symbolP, & scom_section);
+ S_SET_SEGMENT (symbolP, &scom_section);
}
demand_empty_rest_of_line ();
long
m32r_relax_frag (fragP, stretch)
- fragS * fragP;
- long stretch;
+ fragS *fragP;
+ long stretch;
{
/* Address of branch insn. */
long address = fragP->fr_address + fragP->fr_fix - 2;
Any symbol that is now undefined will not become defined.
The guess for fr_var is ACTUALLY the growth beyond fr_fix.
Whatever we do to grow fr_fix or fr_var contributes to our returned value.
- Although it may not be explicit in the frag, pretend fr_var starts with a
- 0 value. */
+ Although it may not be explicit in the frag, pretend fr_var starts
+ with a 0 value. */
int
md_estimate_size_before_relax (fragP, segment)
- fragS * fragP;
- segT segment;
+ fragS *fragP;
+ segT segment;
{
- int old_fr_fix = fragP->fr_fix;
+ int old_fr_fix = fragP->fr_fix;
/* The only thing we have to handle here are symbols outside of the
current segment. They may be undefined or in a different segment in
all further handling to md_convert_frag. */
fragP->fr_subtype = 2;
-#if 0 /* Can't use this, but leave in for illustration. */
+#if 0
+ /* Can't use this, but leave in for illustration. */
/* Change 16 bit insn to 32 bit insn. */
fragP->fr_opcode[0] |= 0x80;
/* Create a relocation for it. */
fix_new (fragP, old_fr_fix, 4,
fragP->fr_symbol,
- fragP->fr_offset, 1 /* pcrel */,
+ fragP->fr_offset, 1 /* pcrel */,
/* FIXME: Can't use a real BFD reloc here.
gas_cgen_md_apply_fix3 can't handle it. */
BFD_RELOC_M32R_26_PCREL);
frag_wane (fragP);
#else
{
- const CGEN_INSN * insn;
- int i;
+ const CGEN_INSN *insn;
+ int i;
/* Update the recorded insn.
Fortunately we don't have to look very far.
}
return (fragP->fr_var + fragP->fr_fix - old_fr_fix);
-}
+}
-/* *fragP has been relaxed to its final size, and now needs to have
+/* *FRAGP has been relaxed to its final size, and now needs to have
the bytes inside it modified to conform to the new size.
Called after relaxation is finished.
void
md_convert_frag (abfd, sec, fragP)
- bfd * abfd;
- segT sec;
- fragS * fragP;
+ bfd *abfd;
+ segT sec;
+ fragS *fragP;
{
- char * opcode;
- char * displacement;
- int target_address;
- int opcode_address;
- int extension;
- int addend;
+ char *opcode;
+ char *displacement;
+ int target_address;
+ int opcode_address;
+ int extension;
+ int addend;
opcode = fragP->fr_opcode;
switch (fragP->fr_subtype)
{
- case 1 :
+ case 1:
extension = 0;
- displacement = & opcode[1];
+ displacement = &opcode[1];
break;
- case 2 :
+ case 2:
opcode[0] |= 0x80;
extension = 2;
- displacement = & opcode[1];
+ displacement = &opcode[1];
break;
- case 3 :
+ case 3:
opcode[2] = opcode[0] | 0x80;
md_number_to_chars (opcode, PAR_NOP_INSN, 2);
opcode_address += 2;
extension = 4;
- displacement = & opcode[3];
+ displacement = &opcode[3];
break;
- default :
+ default:
abort ();
}
if (S_GET_SEGMENT (fragP->fr_symbol) != sec)
{
- /* symbol must be resolved by linker */
+ /* Symbol must be resolved by linker. */
if (fragP->fr_offset & 3)
as_warn (_("Addend to unresolved symbol not on word boundary."));
addend = fragP->fr_offset >> 2;
{
/* Address we want to reach in file space. */
target_address = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset;
- target_address += fragP->fr_symbol->sy_frag->fr_address;
+ target_address += symbol_get_frag (fragP->fr_symbol)->fr_address;
addend = (target_address - (opcode_address & -4)) >> 2;
}
/* Offset of branch insn in frag. */
fragP->fr_fix + extension - 4,
fragP->fr_cgen.insn,
- 4 /*length*/,
- /* FIXME: quick hack */
+ 4 /* Length. */,
+ /* FIXME: quick hack. */
#if 0
cgen_operand_lookup_by_num (gas_cgen_cpu_desc,
fragP->fr_cgen.opindex),
long
md_pcrel_from_section (fixP, sec)
- fixS * fixP;
- segT sec;
+ fixS *fixP;
+ segT sec;
{
if (fixP->fx_addsy != (symbolS *) NULL
&& (! S_IS_DEFINED (fixP->fx_addsy)
bfd_reloc_code_real_type
md_cgen_lookup_reloc (insn, operand, fixP)
- const CGEN_INSN * insn;
- const CGEN_OPERAND * operand;
- fixS * fixP;
+ const CGEN_INSN *insn;
+ const CGEN_OPERAND *operand;
+ fixS *fixP;
{
switch (operand->type)
{
- case M32R_OPERAND_DISP8 : return BFD_RELOC_M32R_10_PCREL;
- case M32R_OPERAND_DISP16 : return BFD_RELOC_M32R_18_PCREL;
- case M32R_OPERAND_DISP24 : return BFD_RELOC_M32R_26_PCREL;
- case M32R_OPERAND_UIMM24 : return BFD_RELOC_M32R_24;
- case M32R_OPERAND_HI16 :
- case M32R_OPERAND_SLO16 :
- case M32R_OPERAND_ULO16 :
+ case M32R_OPERAND_DISP8: return BFD_RELOC_M32R_10_PCREL;
+ case M32R_OPERAND_DISP16: return BFD_RELOC_M32R_18_PCREL;
+ case M32R_OPERAND_DISP24: return BFD_RELOC_M32R_26_PCREL;
+ case M32R_OPERAND_UIMM24: return BFD_RELOC_M32R_24;
+ case M32R_OPERAND_HI16:
+ case M32R_OPERAND_SLO16:
+ case M32R_OPERAND_ULO16:
/* If low/high/shigh/sda was used, it is recorded in `opinfo'. */
if (fixP->fx_cgen.opinfo != 0)
return fixP->fx_cgen.opinfo;
break;
- default : /* avoid -Wall warning */
+ default:
+ /* Avoid -Wall warning. */
break;
}
return BFD_RELOC_NONE;
static void
m32r_record_hi16 (reloc_type, fixP, seg)
- int reloc_type;
- fixS * fixP;
- segT seg;
+ int reloc_type;
+ fixS *fixP;
+ segT seg;
{
- struct m32r_hi_fixup * hi_fixup;
+ struct m32r_hi_fixup *hi_fixup;
assert (reloc_type == BFD_RELOC_M32R_HI16_SLO
|| reloc_type == BFD_RELOC_M32R_HI16_ULO);
hi_fixup->fixp = fixP;
hi_fixup->seg = now_seg;
hi_fixup->next = m32r_hi_fixup_list;
-
+
m32r_hi_fixup_list = hi_fixup;
}
fixS *
m32r_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
- fragS * frag;
- int where;
- const CGEN_INSN * insn;
- int length;
- const CGEN_OPERAND * operand;
- int opinfo;
- expressionS * exp;
+ fragS *frag;
+ int where;
+ const CGEN_INSN *insn;
+ int length;
+ const CGEN_OPERAND *operand;
+ int opinfo;
+ expressionS *exp;
{
- fixS * fixP = gas_cgen_record_fixup_exp (frag, where, insn, length,
- operand, opinfo, exp);
+ fixS *fixP = gas_cgen_record_fixup_exp (frag, where, insn, length,
+ operand, opinfo, exp);
switch (operand->type)
{
- case M32R_OPERAND_HI16 :
+ case M32R_OPERAND_HI16:
/* If low/high/shigh/sda was used, it is recorded in `opinfo'. */
if (fixP->fx_cgen.opinfo == BFD_RELOC_M32R_HI16_SLO
|| fixP->fx_cgen.opinfo == BFD_RELOC_M32R_HI16_ULO)
m32r_record_hi16 (fixP->fx_cgen.opinfo, fixP, now_seg);
break;
- default : /* avoid -Wall warning */
+ default:
+ /* Avoid -Wall warning */
break;
}
void
m32r_frob_file ()
{
- struct m32r_hi_fixup * l;
+ struct m32r_hi_fixup *l;
for (l = m32r_hi_fixup_list; l != NULL; l = l->next)
{
- segment_info_type * seginfo;
- int pass;
+ segment_info_type *seginfo;
+ int pass;
assert (FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_M32R_HI16_SLO
|| FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_M32R_HI16_ULO);
seginfo = seg_info (l->seg);
for (pass = 0; pass < 2; pass++)
{
- fixS * f;
- fixS * prev;
+ fixS *f;
+ fixS *prev;
prev = NULL;
for (f = seginfo->fix_root; f != NULL; f = f->fx_next)
|| (FX_OPINFO_R_TYPE (prev) != BFD_RELOC_M32R_HI16_SLO
&& FX_OPINFO_R_TYPE (prev) != BFD_RELOC_M32R_HI16_ULO)
|| prev->fx_addsy != f->fx_addsy
- || prev->fx_offset != f->fx_offset))
+ || prev->fx_offset != f->fx_offset))
{
- fixS ** pf;
+ fixS **pf;
/* Move l->fixp before f. */
for (pf = &seginfo->fix_root;
- * pf != l->fixp;
- pf = & (* pf)->fx_next)
- assert (* pf != NULL);
+ *pf != l->fixp;
+ pf = & (*pf)->fx_next)
+ assert (*pf != NULL);
- * pf = l->fixp->fx_next;
+ *pf = l->fixp->fx_next;
l->fixp->fx_next = f;
if (prev == NULL)
int
m32r_force_relocation (fix)
- fixS * fix;
+ fixS *fix;
{
if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
if (! m32r_relax)
return 0;
- return (fix->fx_pcrel
- || 0 /* ??? */);
+ return fix->fx_pcrel;
}
\f
/* Write a value out to the object file, using the appropriate endianness. */
void
md_number_to_chars (buf, val, n)
- char * buf;
+ char *buf;
valueT val;
- int n;
+ int n;
{
if (target_big_endian)
number_to_chars_bigendian (buf, val, n);
number_to_chars_littleendian (buf, val, n);
}
-/* 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.
-*/
+/* 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 */
+/* Equal to MAX_PRECISION in atof-ieee.c. */
#define MAX_LITTLENUMS 6
char *
char *litP;
int *sizeP;
{
- int i;
- int prec;
- LITTLENUM_TYPE words [MAX_LITTLENUMS];
- char * t;
- char * atof_ieee ();
+ int i;
+ int prec;
+ LITTLENUM_TYPE words[MAX_LITTLENUMS];
+ char *t;
+ char *atof_ieee ();
switch (type)
{
prec = 4;
break;
- /* FIXME: Some targets allow other format chars for bigger sizes here. */
+ /* FIXME: Some targets allow other format chars for bigger sizes
+ here. */
default:
- * sizeP = 0;
+ *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);
+ *sizeP = prec * sizeof (LITTLENUM_TYPE);
if (target_big_endian)
{
litP += sizeof (LITTLENUM_TYPE);
}
}
-
+
return 0;
}
/* If we have reached the end of a section and we have just emitted a
16 bit insn, then emit a nop to make sure that the section ends on
a 32 bit boundary. */
-
+
if (prev_insn.insn || seen_relaxable_p)
(void) m32r_fill_insn (0);
}
+/* Return true if can adjust the reloc to be relative to its section
+ (such as .data) instead of relative to some symbol. */
+
boolean
m32r_fix_adjustable (fixP)
fixS *fixP;
{
+ bfd_reloc_code_real_type reloc_type;
+
+ if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
+ {
+ const CGEN_INSN *insn = NULL;
+ int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
+ const CGEN_OPERAND *operand =
+ cgen_operand_lookup_by_num(gas_cgen_cpu_desc, opindex);
+ reloc_type = md_cgen_lookup_reloc (insn, operand, fixP);
+ }
+ else
+ reloc_type = fixP->fx_r_type;
+
if (fixP->fx_addsy == NULL)
return 1;
-
- /* Prevent all adjustments to global symbols. */
+
+ /* Prevent all adjustments to global symbols. */
if (S_IS_EXTERN (fixP->fx_addsy))
return 0;
if (S_IS_WEAK (fixP->fx_addsy))
return 0;
-
- /* We need the symbol name for the VTABLE entries */
- if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
- || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+
+ /* We need the symbol name for the VTABLE entries. */
+ if (reloc_type == BFD_RELOC_VTABLE_INHERIT
+ || reloc_type == BFD_RELOC_VTABLE_ENTRY)
return 0;
return 1;
projects / binutils.git / blobdiff