/* tc-vax.c - vax-specific -
- Copyright (C) 1987, 91, 92, 93, 94, 95, 98, 99, 2000
+ Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1998, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#include "vax-inst.h"
#include "obstack.h" /* For FRAG_APPEND_1_CHAR macro in "frags.h" */
+#include "subsegs.h"
+
+#ifdef OBJ_ELF
+#include "elf/vax.h"
+#endif
/* These chars start a comment anywhere in a source file (except inside
another comment */
FLONUM_TYPE float_operand[VIT_MAX_OPERANDS];
/* Above is made to point into big_operand_bits by md_begin(). */
+#ifdef OBJ_ELF
+#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
+#define PROCEDURE_LINKAGE_TABLE_NAME "_PROCEDURE_LINKAGE_TABLE_"
+symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
+symbolS *PLT_symbol; /* Pre-defined "_PROCEDURE_LINKAGE_TABLE_" */
+#endif
+
int flag_hash_long_names; /* -+ */
int flag_one; /* -1 */
int flag_show_after_trunc; /* -H */
int flag_no_hash_mixed_case; /* -h NUM */
+#ifdef OBJ_ELF
+int flag_want_pic; /* -k */
+#endif
\f
/*
* For VAX, relative addresses of "just the right length" are easy.
bbcs e3
bbsc e4
bbcc e5
- bbssi e6
- bbcci e7
Always, you complement 0th bit to reverse condition.
Always, 1-byte opcde, longword-address, byte-address, 1-byte-displacement
#define C(a,b) ENCODE_RELAX(a,b)
/* This macro has no side-effects. */
#define ENCODE_RELAX(what,length) (((what) << 2) + (length))
+#define RELAX_STATE(s) ((s) >> 2)
+#define RELAX_LENGTH(s) ((s) & 3)
const relax_typeS md_relax_table[] =
{
{1, 1, 0, 0}, /* unused 0,1 */
{1, 1, 0, 0}, /* unused 0,2 */
{1, 1, 0, 0}, /* unused 0,3 */
+
{BF + 1, BB + 1, 2, C (1, 1)},/* B^"foo" 1,0 */
{WF + 1, WB + 1, 3, C (1, 2)},/* W^"foo" 1,1 */
{0, 0, 5, 0}, /* L^"foo" 1,2 */
{1, 1, 0, 0}, /* unused 1,3 */
+
{BF, BB, 1, C (2, 1)}, /* b<cond> B^"foo" 2,0 */
{WF + 2, WB + 2, 4, C (2, 2)},/* br.+? brw X 2,1 */
{0, 0, 7, 0}, /* br.+? jmp X 2,2 */
{1, 1, 0, 0}, /* unused 2,3 */
+
{BF, BB, 1, C (3, 1)}, /* brb B^foo 3,0 */
{WF, WB, 2, C (3, 2)}, /* brw W^foo 3,1 */
{0, 0, 5, 0}, /* Jmp L^foo 3,2 */
{1, 1, 0, 0}, /* unused 3,3 */
+
{1, 1, 0, 0}, /* unused 4,0 */
{WF, WB, 2, C (4, 2)}, /* acb_ ^Wfoo 4,1 */
{0, 0, 10, 0}, /* acb_,br,jmp L^foo4,2 */
{1, 1, 0, 0}, /* unused 4,3 */
+
{BF, BB, 1, C (5, 1)}, /* Xob___,,foo 5,0 */
{WF + 4, WB + 4, 6, C (5, 2)},/* Xob.+2,brb.+3,brw5,1 */
{0, 0, 9, 0}, /* Xob.+2,brb.+6,jmp5,2 */
+ {1, 1, 0, 0}, /* unused 5,3 */
};
#undef C
#undef WF
#undef WB
-void float_cons ();
+void float_cons PARAMS ((int));
const pseudo_typeS md_pseudo_table[] =
{
{"ffloat", float_cons, 'f'},
{"gfloat", float_cons, 'g'},
{"hfloat", float_cons, 'h'},
- {0},
+ {NULL, NULL, 0},
};
#define STATE_PC_RELATIVE (1)
LITTLENUM_TYPE * words));
static const char *vip_begin PARAMS ((int, const char *, const char *,
const char *));
+static void vip_op_1 PARAMS ((int, const char *));
static void vip_op_defaults PARAMS ((const char *, const char *, const char *));
static void vip_op PARAMS ((char *, struct vop *));
static void vip PARAMS ((struct vit *, char *));
+static int vax_reg_parse PARAMS ((char, char, char, char));
+
void
md_begin ()
{
that they reference. */
void /* Knows about order of bytes in address. */
-md_apply_fix (fixP, value)
+md_apply_fix3 (fixP, valueP, seg)
fixS *fixP;
- long value;
+ valueT *valueP;
+ segT seg ATTRIBUTE_UNUSED;
{
- number_to_chars_littleendian (fixP->fx_where + fixP->fx_frag->fr_literal,
- (valueT) value, fixP->fx_size);
+ valueT value = * valueP;
+#ifdef BFD_ASSEMBLER
+ if (((fixP->fx_addsy == NULL && fixP->fx_subsy == NULL)
+ && fixP->fx_r_type != BFD_RELOC_32_PLT_PCREL
+ && fixP->fx_r_type != BFD_RELOC_32_GOT_PCREL)
+ || fixP->fx_r_type == NO_RELOC)
+#endif
+ number_to_chars_littleendian (fixP->fx_where + fixP->fx_frag->fr_literal,
+ value, fixP->fx_size);
+
+ if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
+ fixP->fx_done = 1;
}
long
{
/* Non-zero if operand expression's segment is not known yet. */
int is_undefined;
+ /* Non-zero if operand expression's segment is absolute. */
+ int is_absolute;
int length_code;
char *p;
*/
if ((goofed = (*v.vit_error)) != 0)
{
- as_warn (_("Ignoring statement due to \"%s\""), v.vit_error);
+ as_fatal (_("Ignoring statement due to \"%s\""), v.vit_error);
}
/*
* We need to use expression() and friends, which require us to diddle
{ /* for each operand */
if (operandP->vop_error)
{
- as_warn (_("Ignoring statement because \"%s\""), operandP->vop_error);
+ as_fatal (_("Aborting because statement has \"%s\""), operandP->vop_error);
goofed = 1;
}
else
* instruction operands.
*/
need_pass_2 = 1;
- as_warn (_("Can't relocate expression"));
+ as_fatal (_("Can't relocate expression"));
break;
case O_big:
}
if (input_line_pointer != operandP->vop_expr_end + 1)
{
- as_warn ("Junk at end of expression \"%s\"", input_line_pointer);
+ as_fatal ("Junk at end of expression \"%s\"", input_line_pointer);
goofed = 1;
}
operandP->vop_expr_end[1] = c_save;
this_add_number = expP->X_add_number;
this_add_symbol = expP->X_add_symbol;
to_seg = *segP;
+#ifdef BFD_ASSEMBLER
+ is_undefined = (to_seg == undefined_section);
+ is_absolute = (to_seg == absolute_section);
+#else
is_undefined = (to_seg == SEG_UNKNOWN);
+ is_absolute = (to_seg == SEG_ABSOLUTE);
+#endif
at = operandP->vop_mode & 1;
length = (operandP->vop_short == 'b'
? 1 : (operandP->vop_short == 'w'
/*
* --- SEG FLOAT MAY APPEAR HERE ----
*/
- if (to_seg == SEG_ABSOLUTE)
+ if (is_absolute)
{
if (nbytes)
{
know (!(opcode_as_number & VIT_OPCODE_SYNTHETIC));
p = frag_more (nbytes);
/* Conventional relocation. */
- fix_new (frag_now, p - frag_now->fr_literal,
- nbytes, &abs_symbol, this_add_number,
- 1, NO_RELOC);
+ fix_new (frag_now, p - frag_now->fr_literal, nbytes,
+#ifdef BFD_ASSEMBLER
+ section_symbol (absolute_section),
+#else
+ &abs_symbol,
+#endif
+ this_add_number, 1, NO_RELOC);
}
else
{
}
else
{
- /* to_seg != now_seg && to_seg != SEG_UNKNOWN && to_Seg != SEG_ABSOLUTE */
+ /* to_seg != now_seg && !is_undefinfed && !is_absolute */
if (nbytes > 0)
{
/* Pc-relative. Conventional relocation. */
know (!(opcode_as_number & VIT_OPCODE_SYNTHETIC));
p = frag_more (nbytes);
- fix_new (frag_now, p - frag_now->fr_literal,
- nbytes, &abs_symbol, this_add_number,
- 1, NO_RELOC);
+ fix_new (frag_now, p - frag_now->fr_literal, nbytes,
+#ifdef BFD_ASSEMBLER
+ section_symbol (absolute_section),
+#else
+ &abs_symbol,
+#endif
+ this_add_number, 1, NO_RELOC);
}
else
{
|| operandP->vop_access == 'w');
if (operandP->vop_short == 's')
{
- if (to_seg == SEG_ABSOLUTE)
+ if (is_absolute)
{
if (this_add_number >= 64)
{
if (length == 0)
{
know (operandP->vop_short == ' ');
+ length_code = STATE_BYTE;
+#ifdef OBJ_ELF
+ if (S_IS_EXTERNAL (this_add_symbol)
+ || S_IS_WEAK (this_add_symbol))
+ length_code = STATE_UNDF;
+#endif
p = frag_var (rs_machine_dependent, 10, 2,
- ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE),
+ ENCODE_RELAX (STATE_PC_RELATIVE, length_code),
this_add_symbol, this_add_number,
opcode_low_byteP);
know (operandP->vop_mode == 10 + at);
{ /* to_seg != now_seg */
if (this_add_symbol == NULL)
{
- know (to_seg == SEG_ABSOLUTE);
+ know (is_absolute);
/* Do @#foo: simpler relocation than foo-.(pc) anyway. */
p = frag_more (5);
p[0] = VAX_ABSOLUTE_MODE; /* @#... */
/* {@}{q^}other_seg */
know ((length == 0 && operandP->vop_short == ' ')
|| (length > 0 && operandP->vop_short != ' '));
- if (is_undefined)
+ if (is_undefined
+#ifdef OBJ_ELF
+ || S_IS_WEAK(this_add_symbol)
+ || S_IS_EXTERNAL(this_add_symbol)
+#endif
+ )
{
+ switch (length)
+ {
+ default: length_code = STATE_UNDF; break;
+ case 1: length_code = STATE_BYTE; break;
+ case 2: length_code = STATE_WORD; break;
+ case 4: length_code = STATE_LONG; break;
+ }
/*
* We have a SEG_UNKNOWN symbol. It might
* turn out to be in the same segment as
* the instruction, permitting relaxation.
*/
p = frag_var (rs_machine_dependent, 5, 2,
- ENCODE_RELAX (STATE_PC_RELATIVE, STATE_UNDF),
+ ENCODE_RELAX (STATE_PC_RELATIVE, length_code),
this_add_symbol, this_add_number,
- 0);
+ opcode_low_byteP);
p[0] = at << 4;
}
else
one case. */
}
if (length == 0
- && to_seg == SEG_ABSOLUTE && (expP->X_op != O_big)
+ && is_absolute && (expP->X_op != O_big)
&& operandP->vop_mode == 8 /* No '@'. */
&& this_add_number < 64)
{
know (nbytes);
p = frag_more (nbytes + 1);
know (operandP->vop_reg == 0xF);
+#ifdef OBJ_ELF
+ if (flag_want_pic && operandP->vop_mode == 8
+ && this_add_symbol != NULL)
+ {
+ as_warn (_("Symbol used as immediate operand in PIC mode."));
+ }
+#endif
p[0] = (operandP->vop_mode << 4) | 0xF;
- if ((to_seg == SEG_ABSOLUTE) && (expP->X_op != O_big))
+ if ((is_absolute) && (expP->X_op != O_big))
{
/*
* If nbytes > 4, then we are scrod. We
|| (length > 0 && operandP->vop_short != ' '));
if (length == 0)
{
- if (to_seg == SEG_ABSOLUTE)
+ if (is_absolute)
{
long test;
know (operandP->vop_reg >= 0);
p[0] = operandP->vop_reg
| ((at | "?\12\14?\16"[length]) << 4);
- if (to_seg == SEG_ABSOLUTE)
+ if (is_absolute)
{
md_number_to_chars (p + 1, this_add_number, length);
}
} /* for(operandP) */
} /* vax_assemble() */
\f
-/*
- * md_estimate_size_before_relax()
- *
- * Called just before relax().
- * Any symbol that is now undefined will not become defined.
- * Return the correct fr_subtype in the frag.
- * Return the initial "guess for fr_var" to caller.
- * 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.
- */
+/* md_estimate_size_before_relax(), called just before relax().
+ Any symbol that is now undefined will not become defined.
+ Return the correct fr_subtype in the frag and the growth beyond
+ fr_fix. */
int
md_estimate_size_before_relax (fragP, segment)
fragS *fragP;
segT segment;
{
- char *p;
- int old_fr_fix;
-
- old_fr_fix = fragP->fr_fix;
- switch (fragP->fr_subtype)
+ if (RELAX_LENGTH (fragP->fr_subtype) == STATE_UNDF)
{
- case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_UNDF):
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment)
- { /* A relaxable case. */
- fragP->fr_subtype = ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE);
- }
- else
+ if (S_GET_SEGMENT (fragP->fr_symbol) != segment
+#ifdef OBJ_ELF
+ || S_IS_WEAK (fragP->fr_symbol)
+ || S_IS_EXTERNAL (fragP->fr_symbol)
+#endif
+ )
{
- p = fragP->fr_literal + old_fr_fix;
- p[0] |= VAX_PC_RELATIVE_MODE; /* Preserve @ bit. */
- fragP->fr_fix += 1 + 4;
- fix_new (fragP, old_fr_fix + 1, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, NO_RELOC);
- frag_wane (fragP);
- }
- break;
+ /* Non-relaxable cases. */
+ int reloc_type = NO_RELOC;
+ char *p;
+ int old_fr_fix;
- case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_UNDF):
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment)
- {
- fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_BYTE);
- }
- else
- {
+ old_fr_fix = fragP->fr_fix;
p = fragP->fr_literal + old_fr_fix;
- *fragP->fr_opcode ^= 1; /* Reverse sense of branch. */
- p[0] = 6;
- p[1] = VAX_JMP;
- p[2] = VAX_PC_RELATIVE_MODE; /* ...(PC) */
- fragP->fr_fix += 1 + 1 + 1 + 4;
- fix_new (fragP, old_fr_fix + 3, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, NO_RELOC);
- frag_wane (fragP);
- }
- break;
+#ifdef OBJ_ELF
+ /*
+ * If this is to undefined symbol, then if it's an indirect
+ * reference indicate that is can mutated into a GLOB_DAT
+ * by the loader. We restrict ourselves to no offset due to
+ * a limitation in the NetBSD linker.
+ */
+ if (GOT_symbol == NULL)
+ GOT_symbol = symbol_find (GLOBAL_OFFSET_TABLE_NAME);
+ if (PLT_symbol == NULL)
+ PLT_symbol = symbol_find (PROCEDURE_LINKAGE_TABLE_NAME);
+ if ((GOT_symbol == NULL || fragP->fr_symbol != GOT_symbol)
+ && (PLT_symbol == NULL || fragP->fr_symbol != PLT_symbol)
+ && fragP->fr_symbol != NULL
+ && (!S_IS_DEFINED (fragP->fr_symbol)
+ || S_IS_WEAK (fragP->fr_symbol)
+ || S_IS_EXTERNAL (fragP->fr_symbol)))
+ {
+ if (p[0] & 0x10)
+ {
+ if (flag_want_pic)
+ as_fatal ("PIC reference to %s is indirect.\n",
+ S_GET_NAME (fragP->fr_symbol));
+ }
+ else
+ {
+
+ if (((unsigned char *) fragP->fr_opcode)[0] == VAX_CALLS
+ || ((unsigned char *) fragP->fr_opcode)[0] == VAX_CALLG
+ || ((unsigned char *) fragP->fr_opcode)[0] == VAX_JSB
+ || ((unsigned char *) fragP->fr_opcode)[0] == VAX_JMP
+ || S_IS_FUNCTION (fragP->fr_symbol))
+ reloc_type = BFD_RELOC_32_PLT_PCREL;
+ else
+ reloc_type = BFD_RELOC_32_GOT_PCREL;
+ }
+ }
+#endif
+ switch (RELAX_STATE (fragP->fr_subtype))
+ {
+ case STATE_PC_RELATIVE:
+ p[0] |= VAX_PC_RELATIVE_MODE; /* Preserve @ bit. */
+ fragP->fr_fix += 1 + 4;
+ fix_new (fragP, old_fr_fix + 1, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, reloc_type);
+ break;
- case ENCODE_RELAX (STATE_COMPLEX_BRANCH, STATE_UNDF):
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment)
- {
- fragP->fr_subtype = ENCODE_RELAX (STATE_COMPLEX_BRANCH, STATE_WORD);
- }
- else
- {
- p = fragP->fr_literal + old_fr_fix;
- p[0] = 2;
- p[1] = 0;
- p[2] = VAX_BRB;
- p[3] = 6;
- p[4] = VAX_JMP;
- p[5] = VAX_PC_RELATIVE_MODE; /* ...(pc) */
- fragP->fr_fix += 2 + 2 + 1 + 1 + 4;
- fix_new (fragP, old_fr_fix + 6, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, NO_RELOC);
- frag_wane (fragP);
- }
- break;
+ case STATE_CONDITIONAL_BRANCH:
+ *fragP->fr_opcode ^= 1; /* Reverse sense of branch. */
+ p[0] = 6;
+ p[1] = VAX_JMP;
+ p[2] = VAX_PC_RELATIVE_MODE; /* ...(PC) */
+ fragP->fr_fix += 1 + 1 + 1 + 4;
+ fix_new (fragP, old_fr_fix + 3, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ break;
- case ENCODE_RELAX (STATE_COMPLEX_HOP, STATE_UNDF):
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment)
- {
- fragP->fr_subtype = ENCODE_RELAX (STATE_COMPLEX_HOP, STATE_BYTE);
- }
- else
- {
- p = fragP->fr_literal + old_fr_fix;
- p[0] = 2;
- p[1] = VAX_BRB;
- p[2] = 6;
- p[3] = VAX_JMP;
- p[4] = VAX_PC_RELATIVE_MODE; /* ...(pc) */
- fragP->fr_fix += 1 + 2 + 1 + 1 + 4;
- fix_new (fragP, old_fr_fix + 5, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, NO_RELOC);
+ case STATE_COMPLEX_BRANCH:
+ p[0] = 2;
+ p[1] = 0;
+ p[2] = VAX_BRB;
+ p[3] = 6;
+ p[4] = VAX_JMP;
+ p[5] = VAX_PC_RELATIVE_MODE; /* ...(pc) */
+ fragP->fr_fix += 2 + 2 + 1 + 1 + 4;
+ fix_new (fragP, old_fr_fix + 6, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ break;
+
+ case STATE_COMPLEX_HOP:
+ p[0] = 2;
+ p[1] = VAX_BRB;
+ p[2] = 6;
+ p[3] = VAX_JMP;
+ p[4] = VAX_PC_RELATIVE_MODE; /* ...(pc) */
+ fragP->fr_fix += 1 + 2 + 1 + 1 + 4;
+ fix_new (fragP, old_fr_fix + 5, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ break;
+
+ case STATE_ALWAYS_BRANCH:
+ *fragP->fr_opcode += VAX_WIDEN_LONG;
+ p[0] = VAX_PC_RELATIVE_MODE; /* ...(PC) */
+ fragP->fr_fix += 1 + 4;
+ fix_new (fragP, old_fr_fix + 1, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ break;
+
+ default:
+ abort ();
+ }
frag_wane (fragP);
+
+ /* Return the growth in the fixed part of the frag. */
+ return fragP->fr_fix - old_fr_fix;
}
- break;
- case ENCODE_RELAX (STATE_ALWAYS_BRANCH, STATE_UNDF):
- if (S_GET_SEGMENT (fragP->fr_symbol) == segment)
+ /* Relaxable cases. Set up the initial guess for the variable
+ part of the frag. */
+ switch (RELAX_STATE (fragP->fr_subtype))
{
+ case STATE_PC_RELATIVE:
+ fragP->fr_subtype = ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE);
+ break;
+ case STATE_CONDITIONAL_BRANCH:
+ fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_BYTE);
+ break;
+ case STATE_COMPLEX_BRANCH:
+ fragP->fr_subtype = ENCODE_RELAX (STATE_COMPLEX_BRANCH, STATE_WORD);
+ break;
+ case STATE_COMPLEX_HOP:
+ fragP->fr_subtype = ENCODE_RELAX (STATE_COMPLEX_HOP, STATE_BYTE);
+ break;
+ case STATE_ALWAYS_BRANCH:
fragP->fr_subtype = ENCODE_RELAX (STATE_ALWAYS_BRANCH, STATE_BYTE);
+ break;
}
- else
- {
- p = fragP->fr_literal + old_fr_fix;
- *fragP->fr_opcode += VAX_WIDEN_LONG;
- p[0] = VAX_PC_RELATIVE_MODE; /* ...(PC) */
- fragP->fr_fix += 1 + 4;
- fix_new (fragP, old_fr_fix + 1, 4, fragP->fr_symbol,
- fragP->fr_offset, 1, NO_RELOC);
- frag_wane (fragP);
- }
- break;
-
- default:
- break;
}
- return (fragP->fr_var + fragP->fr_fix - old_fr_fix);
-} /* md_estimate_size_before_relax() */
+
+ if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
+ abort ();
+
+ /* Return the size of the variable part of the frag. */
+ return md_relax_table[fragP->fr_subtype].rlx_length;
+}
\f
/*
* md_convert_frag();
* Out: Any fixSs and constants are set up.
* Caller will turn frag into a ".space 0".
*/
+#ifdef BFD_ASSEMBLER
void
md_convert_frag (headers, seg, fragP)
- object_headers *headers;
- segT seg;
+ bfd *headers ATTRIBUTE_UNUSED;
+ segT seg ATTRIBUTE_UNUSED;
fragS *fragP;
+#else
+void
+md_convert_frag (headers, seg, fragP)
+ object_headers *headers ATTRIBUTE_UNUSED;
+ segT seg ATTRIBUTE_UNUSED;
+ fragS *fragP;
+#endif
{
char *addressP; /* -> _var to change. */
char *opcodeP; /* -> opcode char(s) to change. */
- short int length_code; /* 2=long 1=word 0=byte */
short int extension = 0; /* Size of relaxed address. */
/* Added to fr_fix: incl. ALL var chars. */
symbolS *symbolP;
long where;
- long address_of_var;
- /* Where, in file space, is _var of *fragP? */
- long target_address = 0;
- /* Where, in file space, does addr point? */
know (fragP->fr_type == rs_machine_dependent);
- length_code = fragP->fr_subtype & 3; /* depends on ENCODE_RELAX() */
- know (length_code >= 0 && length_code < 3);
where = fragP->fr_fix;
addressP = fragP->fr_literal + where;
opcodeP = fragP->fr_opcode;
symbolP = fragP->fr_symbol;
know (symbolP);
- target_address = S_GET_VALUE (symbolP) + fragP->fr_offset;
- address_of_var = fragP->fr_address + where;
switch (fragP->fr_subtype)
{
case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE):
know (*addressP == 0 || *addressP == 0x10); /* '@' bit. */
- addressP[0] |= 0xAF; /* Byte displacement. */
- addressP[1] = target_address - (address_of_var + 2);
+ addressP[0] |= 0xAF; /* Byte displacement. */
+ fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 2;
break;
case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_WORD):
know (*addressP == 0 || *addressP == 0x10); /* '@' bit. */
- addressP[0] |= 0xCF; /* Word displacement. */
- md_number_to_chars (addressP + 1, target_address - (address_of_var + 3), 2);
+ addressP[0] |= 0xCF; /* Word displacement. */
+ fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 3;
break;
case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_LONG):
know (*addressP == 0 || *addressP == 0x10); /* '@' bit. */
- addressP[0] |= 0xEF; /* Long word displacement. */
- md_number_to_chars (addressP + 1, target_address - (address_of_var + 5), 4);
+ addressP[0] |= 0xEF; /* Long word displacement. */
+ fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 5;
break;
case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_BYTE):
- addressP[0] = target_address - (address_of_var + 1);
+ fix_new (fragP, fragP->fr_fix, 1, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 1;
break;
case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_WORD):
opcodeP[0] ^= 1; /* Reverse sense of test. */
addressP[0] = 3;
- addressP[1] = VAX_BRB + VAX_WIDEN_WORD;
- md_number_to_chars (addressP + 2, target_address - (address_of_var + 4), 2);
+ addressP[1] = VAX_BRW;
+ fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 4;
break;
addressP[0] = 6;
addressP[1] = VAX_JMP;
addressP[2] = VAX_PC_RELATIVE_MODE;
- md_number_to_chars (addressP + 3, target_address - (address_of_var + 7), 4);
+ fix_new (fragP, fragP->fr_fix + 3, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 7;
break;
case ENCODE_RELAX (STATE_ALWAYS_BRANCH, STATE_BYTE):
- addressP[0] = target_address - (address_of_var + 1);
+ fix_new (fragP, fragP->fr_fix, 1, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 1;
break;
case ENCODE_RELAX (STATE_ALWAYS_BRANCH, STATE_WORD):
opcodeP[0] += VAX_WIDEN_WORD; /* brb -> brw, bsbb -> bsbw */
- md_number_to_chars (addressP, target_address - (address_of_var + 2), 2);
+ fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
+ 1, NO_RELOC);
extension = 2;
break;
case ENCODE_RELAX (STATE_ALWAYS_BRANCH, STATE_LONG):
opcodeP[0] += VAX_WIDEN_LONG; /* brb -> jmp, bsbb -> jsb */
addressP[0] = VAX_PC_RELATIVE_MODE;
- md_number_to_chars (addressP + 1, target_address - (address_of_var + 5), 4);
+ fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 5;
break;
case ENCODE_RELAX (STATE_COMPLEX_BRANCH, STATE_WORD):
- md_number_to_chars (addressP, target_address - (address_of_var + 2), 2);
+ fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 2;
break;
addressP[3] = 6;
addressP[4] = VAX_JMP;
addressP[5] = VAX_PC_RELATIVE_MODE;
- md_number_to_chars (addressP + 6, target_address - (address_of_var + 10), 4);
+ fix_new (fragP, fragP->fr_fix + 6, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 10;
break;
case ENCODE_RELAX (STATE_COMPLEX_HOP, STATE_BYTE):
- addressP[0] = target_address - (address_of_var + 1);
+ fix_new (fragP, fragP->fr_fix, 1, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 1;
break;
addressP[1] = VAX_BRB;
addressP[2] = 3;
addressP[3] = VAX_BRW;
- md_number_to_chars (addressP + 4, target_address - (address_of_var + 6), 2);
+ fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 6;
break;
addressP[2] = 6;
addressP[3] = VAX_JMP;
addressP[4] = VAX_PC_RELATIVE_MODE;
- md_number_to_chars (addressP + 5, target_address - (address_of_var + 9), 4);
+ fix_new (fragP, fragP->fr_fix + 5, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
extension = 9;
break;
#endif /* comment */
+#ifdef OBJ_AOUT
+#ifndef BFD_ASSEMBLER
void
tc_aout_fix_to_chars (where, fixP, segment_address_in_file)
char *where;
| ((nbytes_r_length[fixP->fx_size] << 1) & 0x06)
| (((fixP->fx_pcrel << 0) & 0x01) & 0x0f));
}
+#endif /* !BFD_ASSEMBLER */
+#endif /* OBJ_AOUT */
/*
* BUGS, GRIPES, APOLOGIA, etc.
{"jbcs", {"rlvbb?", 0x800000e3}},
{"jbsc", {"rlvbb?", 0x800000e4}},
{"jbcc", {"rlvbb?", 0x800000e5}},
- {"jbssi", {"rlvbb?", 0x800000e6}},
- {"jbcci", {"rlvbb?", 0x800000e7}},
{"jlbs", {"rlb?", 0x800000e8}},
{"jlbc", {"rlb?", 0x800000e9}},
*
*/
-#include <ctype.h>
+#include "safe-ctype.h"
#define AP (12)
#define FP (13)
#define SP (14)
#define PC (15)
\f
int /* return -1 or 0:15 */
-vax_reg_parse (c1, c2, c3) /* 3 chars of register name */
- char c1, c2, c3; /* c3 == 0 if 2-character reg name */
+vax_reg_parse (c1, c2, c3, c4) /* 3 chars of register name */
+ char c1, c2, c3, c4; /* c3 == 0 if 2-character reg name */
{
int retval; /* return -1:15 */
retval = -1;
- if (isupper (c1))
- c1 = tolower (c1);
- if (isupper (c2))
- c2 = tolower (c2);
- if (isdigit (c2) && c1 == 'r')
+#ifdef OBJ_ELF
+ if (c1 != '%') /* register prefixes are mandatory for ELF */
+ return retval;
+ c1 = c2;
+ c2 = c3;
+ c3 = c4;
+#endif
+#ifdef OBJ_VMS
+ if (c4 != 0) /* register prefixes are not allowed under VMS */
+ return retval;
+#endif
+#ifdef OBJ_AOUT
+ if (c1 == '%') /* register prefixes are optional under a.out */
+ {
+ c1 = c2;
+ c2 = c3;
+ c3 = c4;
+ }
+ else if (c3 && c4) /* can't be 4 characters long. */
+ return retval;
+#endif
+
+ c1 = TOLOWER (c1);
+ c2 = TOLOWER (c2);
+ if (ISDIGIT (c2) && c1 == 'r')
{
retval = c2 - '0';
- if (isdigit (c3))
+ if (ISDIGIT (c3))
{
retval = retval * 10 + c3 - '0';
retval = (retval > 15) ? -1 : retval;
char c;
c = *p;
- if (isupper (c))
- c = tolower (c);
+ c = TOLOWER (c);
if (DISPLENP (p[1]) && strchr ("bilws", len = c))
p += 2; /* skip (letter) '^' */
else /* no (letter) '^' seen */
* name error. So again we don't need to check for early '\0'.
*/
if (q[3] == ']')
- ndx = vax_reg_parse (q[1], q[2], 0);
+ ndx = vax_reg_parse (q[1], q[2], 0, 0);
else if (q[4] == ']')
- ndx = vax_reg_parse (q[1], q[2], q[3]);
+ ndx = vax_reg_parse (q[1], q[2], q[3], 0);
+ else if (q[5] == ']')
+ ndx = vax_reg_parse (q[1], q[2], q[3], q[4]);
else
ndx = -1;
/*
* name error. So again we don't need to check for early '\0'.
*/
if (q[3] == ')')
- reg = vax_reg_parse (q[1], q[2], 0);
+ reg = vax_reg_parse (q[1], q[2], 0, 0);
else if (q[4] == ')')
- reg = vax_reg_parse (q[1], q[2], q[3]);
+ reg = vax_reg_parse (q[1], q[2], q[3], 0);
+ else if (q[5] == ')')
+ reg = vax_reg_parse (q[1], q[2], q[3], q[4]);
else
reg = -1;
/*
q--;
/* reverse over whitespace, but don't */
/* run back over *p */
- if (q > p && q < p + 3) /* room for Rn or Rnn exactly? */
- reg = vax_reg_parse (p[0], p[1], q < p + 2 ? 0 : p[2]);
+ /* room for Rn or Rnn (include prefix) exactly? */
+ if (q > p && q < p + 4)
+ reg = vax_reg_parse (p[0], p[1],
+ q < p + 2 ? 0 : p[2],
+ q < p + 3 ? 0 : p[3]);
else
reg = -1; /* always comes here if no register at all */
/*
void
md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
char *ptr;
- addressT from_addr, to_addr;
- fragS *frag;
- symbolS *to_symbol;
+ addressT from_addr;
+ addressT to_addr ATTRIBUTE_UNUSED;
+ fragS *frag ATTRIBUTE_UNUSED;
+ symbolS *to_symbol ATTRIBUTE_UNUSED;
{
valueT offset;
void
md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
char *ptr;
- addressT from_addr, to_addr;
+ addressT from_addr ATTRIBUTE_UNUSED;
+ addressT to_addr;
fragS *frag;
symbolS *to_symbol;
{
}
\f
#ifdef OBJ_VMS
-CONST char *md_shortopts = "d:STt:V+1h:Hv::";
+const char *md_shortopts = "d:STt:V+1h:Hv::";
+#elif defined(OBJ_ELC)
+const char *md_shortopts = "d:STt:VkK";
#else
-CONST char *md_shortopts = "d:STt:V";
+const char *md_shortopts = "d:STt:V";
#endif
struct option md_longopts[] = {
{NULL, no_argument, NULL, 0}
};
-size_t md_longopts_size = sizeof(md_longopts);
+size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (c, arg)
break;
#endif
+#ifdef OBJ_ELF
+ case 'K':
+ case 'k':
+ flag_want_pic = 1;
+ break; /* -pic, Position Independent Code */
+#endif
+
default:
return 0;
}
md_show_usage (stream)
FILE *stream;
{
- fprintf(stream, _("\
+ fprintf (stream, _("\
VAX options:\n\
-d LENGTH ignored\n\
-J ignored\n\
\f
/* We have no need to default values of symbols. */
-/* ARGSUSED */
symbolS *
md_undefined_symbol (name)
- char *name;
+ char *name ATTRIBUTE_UNUSED;
{
return 0;
}
/* Round up a section size to the appropriate boundary. */
valueT
md_section_align (segment, size)
- segT segment;
+ segT segment ATTRIBUTE_UNUSED;
valueT size;
{
return size; /* Byte alignment is fine */
/* Exactly what point is a PC-relative offset relative TO?
On the vax, they're relative to the address of the offset, plus
- its size. (??? Is this right? FIXME-SOON) */
+ its size. */
long
md_pcrel_from (fixP)
fixS *fixP;
return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
}
+#ifdef OBJ_AOUT
+#ifndef BFD_ASSEMBLER
+void
+tc_headers_hook(headers)
+ object_headers *headers;
+{
+#ifdef TE_NetBSD
+ N_SET_INFO(headers->header, OMAGIC, M_VAX4K_NETBSD, 0);
+ headers->header.a_info = htonl(headers->header.a_info);
+#endif
+}
+#endif /* !BFD_ASSEMBLER */
+#endif /* OBJ_AOUT */
+
+#ifdef BFD_ASSEMBLER
+arelent *
+tc_gen_reloc (section, fixp)
+ asection *section ATTRIBUTE_UNUSED;
+ fixS *fixp;
+{
+ arelent *reloc;
+ bfd_reloc_code_real_type code;
+
+ if (fixp->fx_tcbit)
+ abort();
+
+ if (fixp->fx_r_type != BFD_RELOC_NONE)
+ {
+ code = fixp->fx_r_type;
+
+ if (fixp->fx_pcrel)
+ {
+ switch (code)
+ {
+ case BFD_RELOC_8_PCREL:
+ case BFD_RELOC_16_PCREL:
+ case BFD_RELOC_32_PCREL:
+#ifdef OBJ_ELF
+ case BFD_RELOC_8_GOT_PCREL:
+ case BFD_RELOC_16_GOT_PCREL:
+ case BFD_RELOC_32_GOT_PCREL:
+ case BFD_RELOC_8_PLT_PCREL:
+ case BFD_RELOC_16_PLT_PCREL:
+ case BFD_RELOC_32_PLT_PCREL:
+#endif
+ break;
+ default:
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("Cannot make %s relocation PC relative"),
+ bfd_get_reloc_code_name (code));
+ }
+ }
+ }
+ else
+ {
+#define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
+ switch (F (fixp->fx_size, fixp->fx_pcrel))
+ {
+#define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
+ MAP (1, 0, BFD_RELOC_8);
+ MAP (2, 0, BFD_RELOC_16);
+ MAP (4, 0, BFD_RELOC_32);
+ MAP (1, 1, BFD_RELOC_8_PCREL);
+ MAP (2, 1, BFD_RELOC_16_PCREL);
+ MAP (4, 1, BFD_RELOC_32_PCREL);
+ default:
+ abort ();
+ }
+ }
+#undef F
+#undef MAP
+
+ reloc = (arelent *) xmalloc (sizeof (arelent));
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+#ifndef OBJ_ELF
+ if (fixp->fx_pcrel)
+ reloc->addend = fixp->fx_addnumber;
+ else
+ reloc->addend = 0;
+#else
+ reloc->addend = fixp->fx_offset;
+#endif
+
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
+ assert (reloc->howto != 0);
+
+ return reloc;
+}
+#endif /* BFD_ASSEMBLER */
+
/* end of tc-vax.c */
projects / binutils-gdb.git / blobdiff