/* tc-tic4x.c -- Assemble for the Texas Instruments TMS320C[34]x.
- Copyright (C) 1997,1998, 2002, 2003, 2005, 2006, 2007, 2008, 2009
- Free Software Foundation. Inc.
+ Copyright (C) 1997,1998, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2012 Free Software Foundation. Inc.
Contributed by Michael P. Hayes (m.hayes@elec.canterbury.ac.nz)
o .align cannot handle fill-data-width larger than 0xFF/8-bits. It
should be possible to define a 32-bits pattern.
- o .align fills all section with NOP's when used regardless if has
- been used in .text or .data. (However the .align is primarily
- intended used in .text sections. If you require something else,
- use .align <size>,0x00)
-
o .align: Implement a 'bu' insn if the number of nop's exceeds 4
within the align frag. if(fragsize>4words) insert bu fragend+1
first.
o Evaluation of constant floating point expressions (expr.c needs
work!)
- o Support 'abc' constants (that is 0x616263)
-*/
+ o Support 'abc' constants (that is 0x616263). */
-#include "safe-ctype.h"
#include "as.h"
+#include "safe-ctype.h"
#include "opcode/tic4x.h"
#include "subsegs.h"
#include "obstack.h"
}
name = input_line_pointer;
c = get_symbol_end (); /* Get terminator. */
- demand_empty_rest_of_line ();
tic4x_insert_sym (name, value);
+ *input_line_pointer++ = c;
+ demand_empty_rest_of_line ();
}
/* Reset local labels. */
{
char c;
char *section_name;
- char *subsection_name;
char *name;
segT seg;
offsetT num;
Volker Kuhlmann <v.kuhlmann@elec.canterbury.ac.nz>. */
if (c == ':')
{
- subsection_name = input_line_pointer;
c = get_symbol_end (); /* Get terminator. */
input_line_pointer++; /* Skip null symbol terminator. */
as_warn (_(".sect: subsection name ignored"));
{
static tic4x_inst_t *insts = NULL;
static char *names = NULL;
- static int index = 0;
+ static int iindex = 0;
if (insts == NULL)
{
insts = (tic4x_inst_t *)
xmalloc (sizeof (tic4x_inst_t) * 1024);
}
- insts[index].name = names;
- insts[index].opcode = opcode;
- insts[index].opmask = 0xffffffff;
- insts[index].args = args;
- index++;
+ insts[iindex].name = names;
+ insts[iindex].opcode = opcode;
+ insts[iindex].opmask = 0xffffffff;
+ insts[iindex].args = args;
+ iindex++;
do
*names++ = *name++;
while (*name);
*names++ = '\0';
- return &insts[index - 1];
+ return &insts[iindex - 1];
}
/* Add instruction template, creating dynamic templates as required. */
d = name;
/* We do not care about INSNs that is not a part of our
- oplevel setting */
- if (!insts->oplevel & tic4x_oplevel)
+ oplevel setting. */
+ if ((insts->oplevel & tic4x_oplevel) == 0)
return ok;
while (1)
expressionS *exp = &operand->expr;
char *save = input_line_pointer;
char *str;
- char *new;
+ char *new_pointer;
struct hash_entry *entry = NULL;
input_line_pointer = s;
str = input_line_pointer;
c = get_symbol_end (); /* Get terminator. */
- new = input_line_pointer;
+ new_pointer = input_line_pointer;
if (strlen (str) && (entry = hash_find (tic4x_asg_hash, str)) != NULL)
{
*input_line_pointer = c;
#endif
}
if (entry == NULL)
- new = input_line_pointer;
+ new_pointer = input_line_pointer;
input_line_pointer = save;
- return new;
+ return new_pointer;
}
static int
-tic4x_operands_match (tic4x_inst_t *inst, tic4x_insn_t *insn, int check)
+tic4x_operands_match (tic4x_inst_t *inst, tic4x_insn_t *tinsn, int check)
{
const char *args = inst->args;
unsigned long opcode = inst->opcode;
- int num_operands = insn->num_operands;
- tic4x_operand_t *operand = insn->operands;
+ int num_operands = tinsn->num_operands;
+ tic4x_operand_t *operand = tinsn->operands;
expressionS *exp = &operand->expr;
int ret = 1;
int reg;
If an operand matches, we modify insn or opcode appropriately,
and do a "continue". If an operand fails to match, we "break". */
- insn->nchars = 4; /* Instructions always 4 bytes. */
- insn->reloc = NO_RELOC;
- insn->pcrel = 0;
+ tinsn->nchars = 4; /* Instructions always 4 bytes. */
+ tinsn->reloc = NO_RELOC;
+ tinsn->pcrel = 0;
if (*args == '\0')
{
- insn->opcode = opcode;
+ tinsn->opcode = opcode;
return num_operands == 0;
}
case '\0': /* End of args. */
if (num_operands == 1)
{
- insn->opcode = opcode;
+ tinsn->opcode = opcode;
return ret;
}
break; /* Too many operands. */
}
else if (exp->X_op == O_symbol)
{
- insn->reloc = BFD_RELOC_HI16;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_HI16;
+ tinsn->exp = *exp;
continue;
}
break; /* Not direct (dp) addressing. */
}
else if (exp->X_op == O_symbol)
{
- insn->reloc = BFD_RELOC_LO16;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_LO16;
+ tinsn->exp = *exp;
continue;
}
break; /* Not direct addressing. */
}
if (IS_CPU_TIC4X (tic4x_cpu))
{
- insn->reloc = BFD_RELOC_24_PCREL;
- insn->pcrel = 1;
+ tinsn->reloc = BFD_RELOC_24_PCREL;
+ tinsn->pcrel = 1;
}
else
{
- insn->reloc = BFD_RELOC_24;
- insn->pcrel = 0;
+ tinsn->reloc = BFD_RELOC_24;
+ tinsn->pcrel = 0;
}
- insn->exp = *exp;
+ tinsn->exp = *exp;
continue;
case 'C':
continue;
}
}
- insn->reloc = BFD_RELOC_16_PCREL;
- insn->pcrel = 1;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_16_PCREL;
+ tinsn->pcrel = 1;
+ tinsn->exp = *exp;
continue;
case 'Q':
{
if (operand->mode == M_HI)
{
- insn->reloc = BFD_RELOC_HI16;
+ tinsn->reloc = BFD_RELOC_HI16;
}
else
{
- insn->reloc = BFD_RELOC_LO16;
+ tinsn->reloc = BFD_RELOC_LO16;
}
- insn->exp = *exp;
+ tinsn->exp = *exp;
continue;
}
/* Handle cases like ldi foo - $, ar0 where foo
is a forward reference. Perhaps we should check
for X_op == O_symbol and disallow things like
ldi foo, ar0. */
- insn->reloc = BFD_RELOC_16;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_16;
+ tinsn->exp = *exp;
continue;
case 'T': /* 5-bit immediate value for tic4x stik. */
else if (exp->X_op == O_symbol)
{
if (operand->mode == M_HI)
- insn->reloc = BFD_RELOC_HI16;
+ tinsn->reloc = BFD_RELOC_HI16;
else
- insn->reloc = BFD_RELOC_LO16;
+ tinsn->reloc = BFD_RELOC_LO16;
- insn->exp = *exp;
+ tinsn->exp = *exp;
continue;
}
- insn->reloc = BFD_RELOC_16;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_16;
+ tinsn->exp = *exp;
continue;
case 'V': /* Trap numbers (immediate field). */
continue;
}
}
- insn->reloc = BFD_RELOC_16;
- insn->exp = *exp;
+ tinsn->reloc = BFD_RELOC_16;
+ tinsn->exp = *exp;
continue;
case 'X': /* Expansion register for tic4x. */
continue;
case '|': /* treat as `,' if have ldi_ldi form. */
- if (insn->parallel)
+ if (tinsn->parallel)
{
if (--num_operands < 0)
break; /* Too few operands. */
}
static void
-tic4x_insn_check (tic4x_insn_t *insn)
+tic4x_insn_check (tic4x_insn_t *tinsn)
{
- if (!strcmp(insn->name, "lda"))
+ if (!strcmp (tinsn->name, "lda"))
{
- if (insn->num_operands < 2 || insn->num_operands > 2)
+ if (tinsn->num_operands < 2 || tinsn->num_operands > 2)
as_fatal ("Illegal internal LDA insn definition");
- if ( insn->operands[0].mode == M_REGISTER
- && insn->operands[1].mode == M_REGISTER
- && insn->operands[0].expr.X_add_number == insn->operands[1].expr.X_add_number )
+ if (tinsn->operands[0].mode == M_REGISTER
+ && tinsn->operands[1].mode == M_REGISTER
+ && tinsn->operands[0].expr.X_add_number == tinsn->operands[1].expr.X_add_number )
as_bad (_("Source and destination register should not be equal"));
}
- else if( !strcmp(insn->name, "ldi_ldi")
- || !strcmp(insn->name, "ldi1_ldi2")
- || !strcmp(insn->name, "ldi2_ldi1")
- || !strcmp(insn->name, "ldf_ldf")
- || !strcmp(insn->name, "ldf1_ldf2")
- || !strcmp(insn->name, "ldf2_ldf1") )
+ else if (!strcmp (tinsn->name, "ldi_ldi")
+ || !strcmp (tinsn->name, "ldi1_ldi2")
+ || !strcmp (tinsn->name, "ldi2_ldi1")
+ || !strcmp (tinsn->name, "ldf_ldf")
+ || !strcmp (tinsn->name, "ldf1_ldf2")
+ || !strcmp (tinsn->name, "ldf2_ldf1") )
{
- if ( insn->num_operands < 4 && insn->num_operands > 5 )
- as_fatal ("Illegal internal %s insn definition", insn->name);
+ if (tinsn->num_operands < 4 && tinsn->num_operands > 5 )
+ as_fatal ("Illegal internal %s insn definition", tinsn->name);
- if ( insn->operands[1].mode == M_REGISTER
- && insn->operands[insn->num_operands-1].mode == M_REGISTER
- && insn->operands[1].expr.X_add_number == insn->operands[insn->num_operands-1].expr.X_add_number )
+ if (tinsn->operands[1].mode == M_REGISTER
+ && tinsn->operands[tinsn->num_operands-1].mode == M_REGISTER
+ && tinsn->operands[1].expr.X_add_number == tinsn->operands[tinsn->num_operands-1].expr.X_add_number )
as_warn (_("Equal parallell destination registers, one result will be discarded"));
}
}
static void
-tic4x_insn_output (tic4x_insn_t *insn)
+tic4x_insn_output (tic4x_insn_t *tinsn)
{
char *dst;
/* Grab another fragment for opcode. */
- dst = frag_more (insn->nchars);
+ dst = frag_more (tinsn->nchars);
/* Put out opcode word as a series of bytes in little endian order. */
- md_number_to_chars (dst, insn->opcode, insn->nchars);
+ md_number_to_chars (dst, tinsn->opcode, tinsn->nchars);
/* Put out the symbol-dependent stuff. */
- if (insn->reloc != NO_RELOC)
+ if (tinsn->reloc != NO_RELOC)
{
/* Where is the offset into the fragment for this instruction. */
fix_new_exp (frag_now,
dst - frag_now->fr_literal, /* where */
- insn->nchars, /* size */
- &insn->exp,
- insn->pcrel,
- insn->reloc);
+ tinsn->nchars, /* size */
+ &tinsn->exp,
+ tinsn->pcrel,
+ tinsn->reloc);
}
}
/* Fill the alignment area with NOP's on .text, unless fill-data
was specified. */
int
-tic4x_do_align (int alignment ATTRIBUTE_UNUSED,
- const char *fill ATTRIBUTE_UNUSED,
- int len ATTRIBUTE_UNUSED,
- int max ATTRIBUTE_UNUSED)
+tic4x_do_align (int alignment,
+ const char *fill,
+ int len,
+ int max)
{
- unsigned long nop = TIC_NOP_OPCODE;
-
/* Because we are talking lwords, not bytes, adjust alignment to do words */
alignment += 2;
{
if (fill == NULL)
{
- /*if (subseg_text_p (now_seg))*/ /* FIXME: doesn't work for .text for some reason */
- frag_align_pattern( alignment, (const char *)&nop, sizeof(nop), max);
- return 1;
- /*else
- frag_align (alignment, 0, max);*/
+ if (subseg_text_p (now_seg))
+ {
+ char nop[4];
+
+ md_number_to_chars (nop, TIC_NOP_OPCODE, 4);
+ frag_align_pattern (alignment, nop, sizeof (nop), max);
+ }
+ else
+ frag_align (alignment, 0, max);
}
else if (len <= 1)
frag_align (alignment, *fill, max);
projects / external / binutils.git / blobdiff