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| author | Mark Wielaard <mjw@redhat.com> | 2012-04-30 14:32:28 +0000 |
|---|---|---|
| committer | Mark Wielaard <mjw@redhat.com> | 2012-04-30 14:32:28 +0000 |
| commit | 88ebb0a1567bdc11a39c466735d5fd145f326c1b (patch) | |
| tree | 7f8af837536e570ffdf4d2d271047eafbb87c0a5 | |
| parent | 45162986de31c02d5100f87195b1fa97357f815a (diff) | |
| download | gdb-88ebb0a1567bdc11a39c466735d5fd145f326c1b.zip gdb-88ebb0a1567bdc11a39c466735d5fd145f326c1b.tar.gz gdb-88ebb0a1567bdc11a39c466735d5fd145f326c1b.tar.bz2 | |
gas: Make dwarf2dbg.c versions specific and add DW_AT_high_pc case for DWARF 4+.
* dwarf2dbg.c (DWARF2_ARANGES_VERSION): New define to 2.
(DWARF2_LINE_VERSION): Likewise.
(out_debug_line): Use DWARF2_LINE_VERSION not DWARF2_VERSION.
(out_debug_aranges): Use DWARF2_ARANGES_VERSION not DWARF2_VERSION.
(out_debug_abbrev): Use DW_FORM_data for DW_AT_high_pc when
DWARF2_VERSION >= 4.
(out_debug_info): Use difference between start and end as data
value for DW_AT_high_pc when DWARF2_VERSION >= 4.
* config/tc-ia64.h (DWARF2_LINE_VERSION): Override it.
| -rw-r--r-- | gas/ChangeLog | 12 | ||||
| -rw-r--r-- | gas/config/tc-ia64.h | 1 | ||||
| -rw-r--r-- | gas/dwarf2dbg.c | 28 |
3 files changed, 37 insertions, 4 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 5eee5d3..7e64233 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,15 @@ +2012-04-26 Mark Wielaard <mjw@redhat.com> + + * dwarf2dbg.c (DWARF2_ARANGES_VERSION): New define to 2. + (DWARF2_LINE_VERSION): Likewise. + (out_debug_line): Use DWARF2_LINE_VERSION not DWARF2_VERSION. + (out_debug_aranges): Use DWARF2_ARANGES_VERSION not DWARF2_VERSION. + (out_debug_abbrev): Use DW_FORM_data for DW_AT_high_pc when + DWARF2_VERSION >= 4. + (out_debug_info): Use difference between start and end as data + value for DW_AT_high_pc when DWARF2_VERSION >= 4. + * config/tc-ia64.h (DWARF2_LINE_VERSION): Override it. + 2012-04-27 David S. Miller <davem@davemloft.net> * doc/c-sparc.text: Document %l34 and %h34. diff --git a/gas/config/tc-ia64.h b/gas/config/tc-ia64.h index 96618e9..7cade49 100644 --- a/gas/config/tc-ia64.h +++ b/gas/config/tc-ia64.h @@ -327,4 +327,5 @@ typedef struct unwind_record /* VMS backtraces expect dwarf version 3. */ #ifdef TE_VMS #define DWARF2_VERSION 3 +#define DWARF2_LINE_VERSION 3 #endif diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c index 76f5e84..f428f0d 100644 --- a/gas/dwarf2dbg.c +++ b/gas/dwarf2dbg.c @@ -93,6 +93,16 @@ #define DWARF2_VERSION 2 #endif +/* The .debug_aranges version has been 2 in DWARF version 2, 3 and 4. */ +#ifndef DWARF2_ARANGES_VERSION +#define DWARF2_ARANGES_VERSION 2 +#endif + +/* This implementation output version 2 .debug_line information. */ +#ifndef DWARF2_LINE_VERSION +#define DWARF2_LINE_VERSION 2 +#endif + #include "subsegs.h" #include "dwarf2.h" @@ -1457,7 +1467,7 @@ out_debug_line (segT line_seg) line_end = exp.X_add_symbol; /* Version. */ - out_two (DWARF2_VERSION); + out_two (DWARF2_LINE_VERSION); /* Length of the prologue following this length. */ prologue_end = symbol_temp_make (); @@ -1565,7 +1575,7 @@ out_debug_aranges (segT aranges_seg, segT info_seg) aranges_end = exp.X_add_symbol; /* Version. */ - out_two (DWARF2_VERSION); + out_two (DWARF2_ARANGES_VERSION); /* Offset to .debug_info. */ TC_DWARF2_EMIT_OFFSET (section_symbol (info_seg), sizeof_offset); @@ -1631,7 +1641,11 @@ out_debug_abbrev (segT abbrev_seg, if (all_segs->next == NULL) { out_abbrev (DW_AT_low_pc, DW_FORM_addr); - out_abbrev (DW_AT_high_pc, DW_FORM_addr); + if (DWARF2_VERSION < 4) + out_abbrev (DW_AT_high_pc, DW_FORM_addr); + else + out_abbrev (DW_AT_high_pc, (sizeof_address == 4 + ? DW_FORM_data4 : DW_FORM_data8)); } else { @@ -1694,7 +1708,13 @@ out_debug_info (segT info_seg, segT abbrev_seg, segT line_seg, segT ranges_seg) emit_expr (&exp, sizeof_address); /* DW_AT_high_pc */ - exp.X_op = O_symbol; + if (DWARF2_VERSION < 4) + exp.X_op = O_symbol; + else + { + exp.X_op = O_subtract; + exp.X_op_symbol = all_segs->text_start; + } exp.X_add_symbol = all_segs->text_end; exp.X_add_number = 0; emit_expr (&exp, sizeof_address); |