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-rw-r--r--gas/ChangeLog18
-rw-r--r--gas/config/tc-tic6x.c73
-rw-r--r--gas/config/tc-tic6x.h6
3 files changed, 92 insertions, 5 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index 660daad..5ad2e43 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,21 @@
+2010-04-20 Joseph Myers <joseph@codesourcery.com>
+
+ * config/tc-tic6x.c (OPTION_MGENERATE_REL): New.
+ (md_longopts): Add -mgenerate-rel.
+ (tic6x_generate_rela): New.
+ (md_parse_option): Handle -mgenerate-rel.
+ (md_show_usage): Add comment that -mgenerate-rel is undocumented.
+ (tic6x_init_after_args): New.
+ (md_apply_fix): Correct shift calculations for SB-relative
+ relocations.
+ (md_pcrel_from): Change to tic6x_pcrel_from_section. Do not
+ adjust addresses for relocations referencing symbols in other
+ sections.
+ (tc_gen_reloc): Adjust addend calculations for REL relocations.
+ * config/tc-tic6x.h (MD_PCREL_FROM_SECTION,
+ tic6x_pcrel_from_section, tc_init_after_args,
+ tic6x_init_after_args): New.
+
2010-04-20 Nick Clifton <nickc@redhat.com>
PR gas/11507
diff --git a/gas/config/tc-tic6x.c b/gas/config/tc-tic6x.c
index 730b786..d746f94 100644
--- a/gas/config/tc-tic6x.c
+++ b/gas/config/tc-tic6x.c
@@ -24,6 +24,7 @@
#include "safe-ctype.h"
#include "subsegs.h"
#include "opcode/tic6x.h"
+#include "elf32-tic6x.h"
/* Truncate and sign-extend at 32 bits, so that building on a 64-bit
host gives identical results to a 32-bit host. */
@@ -45,7 +46,8 @@ enum
OPTION_MATOMIC,
OPTION_MNO_ATOMIC,
OPTION_MBIG_ENDIAN,
- OPTION_MLITTLE_ENDIAN
+ OPTION_MLITTLE_ENDIAN,
+ OPTION_MGENERATE_REL
};
struct option md_longopts[] =
@@ -55,6 +57,7 @@ struct option md_longopts[] =
{ "mno-atomic", no_argument, NULL, OPTION_MNO_ATOMIC },
{ "mbig-endian", no_argument, NULL, OPTION_MBIG_ENDIAN },
{ "mlittle-endian", no_argument, NULL, OPTION_MLITTLE_ENDIAN },
+ { "mgenerate-rel", no_argument, NULL, OPTION_MGENERATE_REL },
{ NULL, no_argument, NULL, 0 }
};
size_t md_longopts_size = sizeof (md_longopts);
@@ -95,6 +98,9 @@ static bfd_boolean tic6x_long_data_constraints;
/* Whether compact instructions are available. */
static bfd_boolean tic6x_compact_insns;
+/* Whether to generate RELA relocations. */
+static bfd_boolean tic6x_generate_rela = TRUE;
+
/* Table of supported architecture variants. */
typedef struct
{
@@ -162,6 +168,10 @@ md_parse_option (int c, char *arg)
target_big_endian = 0;
break;
+ case OPTION_MGENERATE_REL:
+ tic6x_generate_rela = FALSE;
+ break;
+
default:
return 0;
}
@@ -180,6 +190,8 @@ md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
fprintf (stream, _(" -mno-atomic disable atomic operation instructions\n"));
fprintf (stream, _(" -mbig-endian generate big-endian code\n"));
fprintf (stream, _(" -mlittle-endian generate little-endian code\n"));
+ /* -mgenerate-rel is only for testsuite use and is deliberately
+ undocumented. */
fputc ('\n', stream);
fprintf (stream, _("Supported ARCH values are:"));
@@ -512,6 +524,15 @@ tic6x_cleanup (void)
tic6x_end_of_line ();
}
+/* Do target-specific initialization after arguments have been
+ processed and the output file created. */
+
+void
+tic6x_init_after_args (void)
+{
+ elf32_tic6x_set_use_rela_p (stdoutput, tic6x_generate_rela);
+}
+
/* Handle a data alignment of N bytes. */
void
@@ -3111,8 +3132,25 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
if (fixP->fx_done || !seg->use_rela_p)
{
offsetT newval = md_chars_to_number (buf, 4);
+ int shift;
+
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_C6000_SBR_L16_H:
+ shift = 1;
+ break;
+
+ case BFD_RELOC_C6000_SBR_L16_W:
+ case BFD_RELOC_C6000_SBR_GOT_L16_W:
+ shift = 2;
+ break;
+
+ default:
+ shift = 0;
+ break;
+ }
- MODIFY_VALUE (newval, value, 0, 7, 16);
+ MODIFY_VALUE (newval, value, shift, 7, 16);
if ((value < -0x8000 || value > 0x7fff)
&& (fixP->fx_r_type == BFD_RELOC_C6000_ABS_S16
|| fixP->fx_r_type == BFD_RELOC_C6000_SBR_S16))
@@ -3135,8 +3173,25 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
if (fixP->fx_done || !seg->use_rela_p)
{
offsetT newval = md_chars_to_number (buf, 4);
+ int shift;
+
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_C6000_SBR_H16_H:
+ shift = 17;
+ break;
+
+ case BFD_RELOC_C6000_SBR_H16_W:
+ case BFD_RELOC_C6000_SBR_GOT_H16_W:
+ shift = 18;
+ break;
- MODIFY_VALUE (newval, value, 16, 7, 16);
+ default:
+ shift = 16;
+ break;
+ }
+
+ MODIFY_VALUE (newval, value, shift, 7, 16);
md_number_to_chars (buf, newval, 4);
}
@@ -3348,8 +3403,12 @@ md_operand (expressionS *op ATTRIBUTE_UNUSED)
packet. */
long
-md_pcrel_from (fixS *fixp)
+tic6x_pcrel_from_section (fixS *fixp, segT sec)
{
+ if (fixp->fx_addsy != NULL
+ && (!S_IS_DEFINED (fixp->fx_addsy)
+ || S_GET_SEGMENT (fixp->fx_addsy) != sec))
+ return 0;
return (fixp->fx_where + fixp->fx_frag->fr_address) & ~(long) 0x1f;
}
@@ -3386,7 +3445,7 @@ tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
- reloc->addend = fixp->fx_offset;
+ reloc->addend = (tic6x_generate_rela ? fixp->fx_offset : 0);
r_type = fixp->fx_r_type;
reloc->howto = bfd_reloc_type_lookup (stdoutput, r_type);
@@ -3398,5 +3457,9 @@ tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
return NULL;
}
+ /* Correct for adjustments bfd_install_relocation will make. */
+ if (reloc->howto->pcrel_offset && reloc->howto->partial_inplace)
+ reloc->addend += reloc->address;
+
return reloc;
}
diff --git a/gas/config/tc-tic6x.h b/gas/config/tc-tic6x.h
index 05c3db8..087b9e9 100644
--- a/gas/config/tc-tic6x.h
+++ b/gas/config/tc-tic6x.h
@@ -96,6 +96,9 @@ extern void tic6x_cons_align (int n);
extern int tic6x_parse_name (const char *name, expressionS *exprP,
enum expr_mode mode, char *nextchar);
+#define MD_PCREL_FROM_SECTION(FIX, SEC) tic6x_pcrel_from_section (FIX, SEC)
+extern long tic6x_pcrel_from_section (struct fix *fixp, segT sec);
+
#define md_start_line_hook() tic6x_start_line_hook ()
extern void tic6x_start_line_hook (void);
@@ -107,5 +110,8 @@ extern void tic6x_cons_fix_new (fragS *frag, int where, int size,
#define tc_frob_label(sym) tic6x_frob_label (sym)
extern void tic6x_frob_label (symbolS *sym);
+#define tc_init_after_args() tic6x_init_after_args ()
+extern void tic6x_init_after_args (void);
+
#define tc_unrecognized_line(c) tic6x_unrecognized_line (c)
extern int tic6x_unrecognized_line (int c);
generated by cgit v1.1 at 2024-12-24 01:25:00 +0000