diff options
Diffstat (limited to 'gdb/dwarf2-frame.c')
| -rw-r--r-- | gdb/dwarf2-frame.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/gdb/dwarf2-frame.c b/gdb/dwarf2-frame.c index d6b8f26..6e420cd 100644 --- a/gdb/dwarf2-frame.c +++ b/gdb/dwarf2-frame.c @@ -383,6 +383,7 @@ execute_cfa_program (unsigned char *insn_ptr, unsigned char *insn_end, insn_ptr = read_uleb128 (insn_ptr, insn_end, ®); insn_ptr = read_uleb128 (insn_ptr, insn_end, &utmp); dwarf2_frame_state_alloc_regs (&fs->regs, reg + 1); + fs->regs.reg[reg].how = REG_SAVED_REG; fs->regs.reg[reg].loc.reg = utmp; break; @@ -770,7 +771,7 @@ dwarf2_frame_prev_register (struct frame_info *next_frame, void **this_cache, either a register and a signed offset that are added together or a DWARF expression that is evaluated. */ /* NOTE: cagney/2003-09-05: Should issue a complain. - Unfortunatly it turns out that DWARF2 CFI has a problem. + Unfortunately it turns out that DWARF2 CFI has a problem. Since CFI specifies the location at which a register was saved (not its value) it isn't possible to specify something like "unwound(REG) == REG + constant" using CFI @@ -885,6 +886,9 @@ struct comp_unit /* Base for DW_EH_PE_datarel encodings. */ bfd_vma dbase; + + /* Base for DW_EH_PE_textrel encodings. */ + bfd_vma tbase; }; const struct objfile_data *dwarf2_frame_data; @@ -1063,6 +1067,9 @@ read_encoded_value (struct comp_unit *unit, unsigned char encoding, case DW_EH_PE_datarel: base = unit->dbase; break; + case DW_EH_PE_textrel: + base = unit->tbase; + break; case DW_EH_PE_aligned: base = 0; offset = buf - unit->dwarf_frame_buffer; @@ -1523,12 +1530,13 @@ dwarf2_build_frame_info (struct objfile *objfile) unit.objfile = objfile; unit.addr_size = objfile->obfd->arch_info->bits_per_address / 8; unit.dbase = 0; + unit.tbase = 0; /* First add the information from the .eh_frame section. That way, the FDEs from that section are searched last. */ if (dwarf_eh_frame_offset) { - asection *got; + asection *got, *txt; unit.cie = NULL; unit.dwarf_frame_buffer = dwarf2_read_section (objfile, @@ -1540,13 +1548,19 @@ dwarf2_build_frame_info (struct objfile *objfile) unit.dwarf_frame_section = dwarf_eh_frame_section; /* FIXME: kettenis/20030602: This is the DW_EH_PE_datarel base - that for the i386/amd64 target, which currently is the only - target in GCC that supports/uses the DW_EH_PE_datarel - encoding. */ + that is used for the i386/amd64 target, which currently is + the only target in GCC that supports/uses the + DW_EH_PE_datarel encoding. */ got = bfd_get_section_by_name (unit.abfd, ".got"); if (got) unit.dbase = got->vma; + /* GCC emits the DW_EH_PE_textrel encoding type on sh and ia64 + so far. */ + txt = bfd_get_section_by_name (unit.abfd, ".text"); + if (txt) + unit.tbase = txt->vma; + frame_ptr = unit.dwarf_frame_buffer; while (frame_ptr < unit.dwarf_frame_buffer + unit.dwarf_frame_size) frame_ptr = decode_frame_entry (&unit, frame_ptr, 1); |