old-cross-binutils/gdb/testsuite/gdb.dwarf2/dw2-empty-pc-range.S

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/* Copyright 2011-2016 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
.text
pc_start:
Correct invalid assumptions made by (mostly) DWARF-2 tests Address issues triggered by the MIPS ISA bit handling change, usually in tests that make artificial DWARF-2 records: * gdb.cp/expand-psymtabs-cxx.exp -- this test is debugging an object file and assuming addresses will be 0; with the ISA bit set code addresses are 1 instead: (gdb) PASS: gdb.cp/expand-psymtabs-cxx.exp: set language c++ p 'method(long)' $1 = {void (long)} 0x1 <method(long)> (gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: before expand p method $2 = {void (long)} 0x1 <method(long)> (gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: force expand p 'method(long)' $3 = {void (long)} 0x1 <method(long)> (gdb) FAIL: gdb.cp/expand-psymtabs-cxx.exp: after expand Fix by matching any hex number, there's no value AFAICT for the test in matching 0 exactly, and I suppose the method's offset within section can be non-zero for some other reasons on other targets too. * gdb.cp/nsalias.exp -- this assumes instructions can be aligned arbitrarily and places code labels at odd addreses, setting the ISA bit and wreaking havoc: (gdb) PASS: gdb.cp/nsalias.exp: print outer::inner::innermost::x list outer::inner::innermost::foo Function "outer::inner::innermost::foo" not defined. (gdb) FAIL: gdb.cp/nsalias.exp: list outer::inner::innermost::foo break *outer::inner::innermost::foo No symbol "foo" in namespace "outer::inner::innermost". (gdb) FAIL: gdb.cp/nsalias.exp: setting breakpoint at *outer::inner::innermost::foo delete $bpnum No breakpoint number 6. (gdb) FAIL: gdb.cp/nsalias.exp: (outer::inner::innermost): delete $bpnum -- etc., etc... Fix by aligning labels to 4; required by many processors. * gdb.dwarf2/dw2-canonicalize-type.exp, gdb.dwarf2/dw2-empty-pc-range.exp, gdb.dwarf2/pr11465.exp -- these assume an instruction and consequently a function can take as little as 1 byte, which makes it impossible to look up a code symbol by an address with the ISA bit set as the address is already beyond the end of the function: (gdb) ptype f No symbol "f" in current context. (gdb) FAIL: gdb.dwarf2/dw2-canonicalize-type.exp: ptype f (gdb) PASS: gdb.dwarf2/dw2-empty-pc-range.exp: empty range before CU load ptype realrange No symbol "realrange" in current context. (gdb) FAIL: gdb.dwarf2/dw2-empty-pc-range.exp: valid range after CU load (gdb) p N::c.C Cannot take address of method C. (gdb) FAIL: gdb.dwarf2/pr11465.exp: p N::c.C -- fix by increasing the size of the function to 4 (perhaps code in gdb/mips-tdep.c could look up code symbols up to twice, with and failing that without the ISA bit set, but it seems wrong to me to implement specific handling for invalid code just to satisfy test cases that assume too much about the target). * gdb.dwarf2/dw2-case-insensitive.exp -- an artificial code label is created, but does not work because data (a `.align' pseudo-op in this case) follows and as a result the label has no MIPS16 or microMIPS annotation in the symbol table: (gdb) PASS: gdb.dwarf2/dw2-case-insensitive.exp: set case-sensitive off info functions fUnC_lang All functions matching regular expression "fUnC_lang": File file1.txt: foo FUNC_lang(void); Non-debugging symbols: 0x004006e0 FUNC_lang_start (gdb) FAIL: gdb.dwarf2/dw2-case-insensitive.exp: regexp case-sensitive off -- fix by adding a `.insn' pseudo-op on MIPS targets; the pseudo-op marks data as instructions. * gdb.dwarf2/dw2-stack-boundary.exp -- the test case enables complaints and assumes none will be issued beyond ones explicitly arranged by the test case, however overlapping sections are noticed while minimal symbols are looked up by `mips_adjust_dwarf2_addr' in DWARF-2 record processing: (gdb) set complaints 100 (gdb) PASS: gdb.dwarf2/dw2-stack-boundary.exp: set complaints 100 file ./dw2-stack-boundary Reading symbols from ./dw2-stack-boundary...location description stack underflow...location description stack overflow...unexpected overlap between: (A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18) (B) section `*COM*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0). Will ignore section B...unexpected overlap between: (A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18) (B) section `*UND*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0). Will ignore section B...unexpected overlap between: (A) section `.reginfo' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x18) (B) section `*ABS*' from `.../gdb.dwarf2/dw2-stack-boundary' [0x0, 0x0). Will ignore section B...done. (gdb) FAIL: gdb.dwarf2/dw2-stack-boundary.exp: check partial symtab errors -- fix by ignoring any extra noise as long as what we look for is found. * gdb.cp/expand-psymtabs-cxx.exp: Accept any address of `method(long)', not just 0x0. * gdb.cp/nsalias.exp: Align code labels to 4. * gdb.dwarf2/dw2-canonicalize-type.S (main): Expand to 4-bytes. * gdb.dwarf2/dw2-empty-pc-range.S (main): Likewise. * gdb.dwarf2/pr11465.S (_ZN1N1cE): Likewise. * gdb.dwarf2/dw2-case-insensitive.c (START_INSNS): New macro. (cu_text_start, FUNC_lang_start): Use `START_INSNS'. * gdb.dwarf2/dw2-stack-boundary.exp: Accept noise in complaints.
2014-12-04 00:06:10 +00:00
.4byte 0
pc_end:
.section .debug_info
d:
.4byte .Ldebug_info_end - 1f /* Length of Compilation Unit Info */
1:
.2byte 0x3 /* DWARF version number */
.4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
.byte 0x4 /* Pointer Size (in bytes) */
dieb:
.uleb128 0x1 /* (DIE (0xb) DW_TAG_compile_unit) */
.ascii "GCC\0" /* DW_AT_producer */
.byte 0x2 /* DW_AT_language = DW_LANG_C */
.ascii "1.c\0" /* DW_AT_name */
.uleb128 0x2 /* (DIE (0xd3) DW_TAG_subprogram) */
.byte 0x1 /* DW_AT_external */
.ascii "realrange\0" /* DW_AT_name */
.4byte pc_start /* DW_AT_low_pc */
.4byte pc_end /* DW_AT_high_pc */
.byte 0x1 /* DW_AT_prototyped */
.uleb128 0x2 /* (DIE (0xd3) DW_TAG_subprogram) */
.byte 0x1 /* DW_AT_external */
.ascii "emptyrange\0" /* DW_AT_name */
.4byte pc_start /* DW_AT_low_pc */
.4byte pc_start /* DW_AT_high_pc */
.byte 0x1 /* DW_AT_prototyped */
.byte 0x0 /* end of children of DIE 0xb */
.Ldebug_info_end:
.section .debug_abbrev
.Ldebug_abbrev0:
.uleb128 0x1 /* (abbrev code) */
.uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x25 /* (DW_AT_producer) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x13 /* (DW_AT_language) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.byte 0x0
.byte 0x0
.uleb128 0x2 /* (abbrev code) */
.uleb128 0x2e /* (DW_TAG_subprogram) */
.byte 0x0 /* DW_children_no */
.uleb128 0x3f /* (DW_AT_external) */
.uleb128 0xc /* (DW_FORM_flag) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x11 /* (DW_AT_low_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.uleb128 0x12 /* (DW_AT_high_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.uleb128 0x27 /* (DW_AT_prototyped) */
.uleb128 0xc /* (DW_FORM_flag) */
.byte 0x0
.byte 0x0
.byte 0x0