Fix unwind info problems with .align.
* config/tc-ia64.c (slot_index): New arg before_relax. Use instead of finalize_syms. (fixup_unw_records): New arg before_relax. Pass to slot_index. (ia64_estimate_size_before_relax): New. (ia64_convert_frag): Pass 0 to fixup_unw_records. Add comment. (generate_unwind_image): Pass 1 to fixup_unw_records. * config/tc-ia64.h (ia64_estimate_size_before_relax): Declare. (md_estimate_size_before_relax): Call ia64_estimate_size_before_relax.
This commit is contained in:
Jim Wilson
parent
1dbe47d647
commit
b5e0fabd1f
3 changed files with 60 additions and 13 deletions
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@ -1,3 +1,14 @@
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2004-02-20 James E Wilson <wilson@specifixinc.com>
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* config/tc-ia64.c (slot_index): New arg before_relax. Use instead of
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finalize_syms.
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(fixup_unw_records): New arg before_relax. Pass to slot_index.
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(ia64_estimate_size_before_relax): New.
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(ia64_convert_frag): Pass 0 to fixup_unw_records. Add comment.
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(generate_unwind_image): Pass 1 to fixup_unw_records.
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* config/tc-ia64.h (ia64_estimate_size_before_relax): Declare.
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(md_estimate_size_before_relax): Call ia64_estimate_size_before_relax.
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2004-02-19 Jakub Jelinek <jakub@redhat.com>
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* stabs.c (generate_asm_file): Avoid warning about use of
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@ -898,9 +898,10 @@ static void process_unw_records PARAMS ((unw_rec_list *, vbyte_func));
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static int calc_record_size PARAMS ((unw_rec_list *));
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static void set_imask PARAMS ((unw_rec_list *, unsigned long, unsigned long, unsigned int));
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static unsigned long slot_index PARAMS ((unsigned long, fragS *,
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unsigned long, fragS *));
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unsigned long, fragS *,
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int));
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static unw_rec_list *optimize_unw_records PARAMS ((unw_rec_list *));
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static void fixup_unw_records PARAMS ((unw_rec_list *));
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static void fixup_unw_records PARAMS ((unw_rec_list *, int));
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static int convert_expr_to_ab_reg PARAMS ((expressionS *, unsigned int *, unsigned int *));
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static int convert_expr_to_xy_reg PARAMS ((expressionS *, unsigned int *, unsigned int *));
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static void generate_unwind_image PARAMS ((const char *));
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@ -2612,14 +2613,16 @@ set_imask (region, regmask, t, type)
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/* Return the number of instruction slots from FIRST_ADDR to SLOT_ADDR.
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SLOT_FRAG is the frag containing SLOT_ADDR, and FIRST_FRAG is the frag
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containing FIRST_ADDR. */
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containing FIRST_ADDR. If BEFORE_RELAX, then we use worst-case estimates
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for frag sizes. */
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unsigned long
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slot_index (slot_addr, slot_frag, first_addr, first_frag)
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slot_index (slot_addr, slot_frag, first_addr, first_frag, before_relax)
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unsigned long slot_addr;
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fragS *slot_frag;
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unsigned long first_addr;
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fragS *first_frag;
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int before_relax;
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{
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unsigned long index = 0;
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@ -2634,10 +2637,10 @@ slot_index (slot_addr, slot_frag, first_addr, first_frag)
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{
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unsigned long start_addr = (unsigned long) &first_frag->fr_literal;
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if (finalize_syms)
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if (! before_relax)
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{
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/* We can get the final addresses only after relaxation is
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done. */
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/* We can get the final addresses only during and after
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relaxation. */
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if (first_frag->fr_next && first_frag->fr_next->fr_address)
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index += 3 * ((first_frag->fr_next->fr_address
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- first_frag->fr_address
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@ -2716,8 +2719,9 @@ optimize_unw_records (list)
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within each record to generate an image. */
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static void
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fixup_unw_records (list)
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fixup_unw_records (list, before_relax)
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unw_rec_list *list;
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int before_relax;
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{
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unw_rec_list *ptr, *region = 0;
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unsigned long first_addr = 0, rlen = 0, t;
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@ -2728,7 +2732,7 @@ fixup_unw_records (list)
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if (ptr->slot_number == SLOT_NUM_NOT_SET)
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as_bad (" Insn slot not set in unwind record.");
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t = slot_index (ptr->slot_number, ptr->slot_frag,
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first_addr, first_frag);
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first_addr, first_frag, before_relax);
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switch (ptr->r.type)
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{
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case prologue:
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@ -2752,7 +2756,8 @@ fixup_unw_records (list)
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last_frag = last->slot_frag;
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break;
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}
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size = slot_index (last_addr, last_frag, first_addr, first_frag);
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size = slot_index (last_addr, last_frag, first_addr, first_frag,
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before_relax);
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rlen = ptr->r.record.r.rlen = size;
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if (ptr->r.type == body)
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/* End of region. */
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@ -2852,6 +2857,35 @@ fixup_unw_records (list)
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}
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}
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/* Estimate the size of a frag before relaxing. We only have one type of frag
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to handle here, which is the unwind info frag. */
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int
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ia64_estimate_size_before_relax (fragS *frag,
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asection *segtype ATTRIBUTE_UNUSED)
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{
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unw_rec_list *list;
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int len, size, pad;
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/* ??? This code is identical to the first part of ia64_convert_frag. */
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list = (unw_rec_list *) frag->fr_opcode;
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fixup_unw_records (list, 0);
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len = calc_record_size (list);
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/* pad to pointer-size boundary. */
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pad = len % md.pointer_size;
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if (pad != 0)
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len += md.pointer_size - pad;
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/* Add 8 for the header + a pointer for the personality offset. */
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size = len + 8 + md.pointer_size;
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/* fr_var carries the max_chars that we created the fragment with.
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We must, of course, have allocated enough memory earlier. */
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assert (frag->fr_var >= size);
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return frag->fr_fix + size;
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}
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/* This function converts a rs_machine_dependent variant frag into a
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normal fill frag with the unwind image from the the record list. */
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void
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@ -2861,8 +2895,9 @@ ia64_convert_frag (fragS *frag)
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int len, size, pad;
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valueT flag_value;
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/* ??? This code is identical to ia64_estimate_size_before_relax. */
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list = (unw_rec_list *) frag->fr_opcode;
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fixup_unw_records (list);
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fixup_unw_records (list, 0);
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len = calc_record_size (list);
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/* pad to pointer-size boundary. */
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@ -3286,7 +3321,7 @@ generate_unwind_image (text_name)
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/* Generate the unwind record. */
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list = optimize_unw_records (unwind.list);
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fixup_unw_records (list);
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fixup_unw_records (list, 1);
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size = calc_record_size (list);
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if (size > 0 || unwind.force_unwind_entry)
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@ -115,6 +115,7 @@ extern void ia64_handle_align PARAMS ((fragS *f));
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extern void ia64_after_parse_args PARAMS ((void));
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extern void ia64_dwarf2_emit_offset PARAMS ((symbolS *, unsigned int));
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extern void ia64_check_label PARAMS ((symbolS *));
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extern int ia64_estimate_size_before_relax (fragS *, asection *);
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extern void ia64_convert_frag (fragS *);
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#define md_end() ia64_end_of_source ()
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@ -138,7 +139,7 @@ extern void ia64_convert_frag (fragS *);
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#define md_create_short_jump(p,f,t,fr,s) \
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as_fatal ("ia64_create_short_jump")
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#define md_estimate_size_before_relax(f,s) \
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(f)->fr_var
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ia64_estimate_size_before_relax(f,s)
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#define md_elf_section_letter ia64_elf_section_letter
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#define md_elf_section_flags ia64_elf_section_flags
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#define TC_FIX_TYPE struct ia64_fix
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