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2018-04-17  Ian Lance Taylor  <iant@golang.org>

	* backtrace.c (backtrace_full): When testing whether we can
	allocate memory, call mmap directly, and munmap the memory.

2018-04-04  Jakub Jelinek  <jakub@redhat.com>

	PR other/85161
	* elf.c (elf_zlib_fetch): Fix up predefined macro names in test for
	big endian, only use 32-bit loads if endianity macros are predefined
	and indicate big or little endian.

2018-02-15  Jakub Jelinek  <jakub@redhat.com>

	PR other/82368
	* elf.c (SHT_PROGBITS): Undefine and define.

2018-02-14  Jakub Jelinek  <jakub@redhat.com>

	PR other/82368
	* elf.c (EM_PPC64, EF_PPC64_ABI): Undefine and define.
	(struct elf_ppc64_opd_data): New type.
	(elf_initialize_syminfo): Add opd argument, handle symbols
	pointing into the PowerPC64 ELFv1 .opd section.
	(elf_add): Read .opd section on PowerPC64 ELFv1, pass pointer
	to structure with .opd data to elf_initialize_syminfo.

2018-01-19  Tony Reix  <tony.reix@atos.net>

	* xcoff.c (xcoff_incl_compare): New function.
	(xcoff_incl_search): New function.
	(xcoff_process_linenos): Use bsearch to find include file.
	(xcoff_initialize_fileline): Sort include file information.

Fixes #13
This commit is contained in:
Ian Lance Taylor
2018-04-17 07:04:02 -07:00
parent 177940370e
commit 012b950b37
3 changed files with 146 additions and 24 deletions
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52
xcoff.c
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@@ -760,6 +760,40 @@ xcoff_fileline (struct backtrace_state *state, uintptr_t pc,
return callback (data, pc, NULL, 0, NULL);
}
/* Compare struct xcoff_incl for qsort. */
static int
xcoff_incl_compare (const void *v1, const void *v2)
{
const struct xcoff_incl *in1 = (const struct xcoff_incl *) v1;
const struct xcoff_incl *in2 = (const struct xcoff_incl *) v2;
if (in1->begin < in2->begin)
return -1;
else if (in1->begin > in2->begin)
return 1;
else
return 0;
}
/* Find a lnnoptr in an include file. */
static int
xcoff_incl_search (const void *vkey, const void *ventry)
{
const uintptr_t *key = (const uintptr_t *) vkey;
const struct xcoff_incl *entry = (const struct xcoff_incl *) ventry;
uintptr_t lnno;
lnno = *key;
if (lnno < entry->begin)
return -1;
else if (lnno > entry->end)
return 1;
else
return 0;
}
/* Add a new mapping to the vector of line mappings that we are
building. Returns 1 on success, 0 on failure. */
@@ -809,7 +843,6 @@ xcoff_process_linenos (struct backtrace_state *state, uintptr_t base_address,
uintptr_t pc;
uint32_t lnno;
int begincl;
size_t i;
aux = (const b_xcoff_auxent *) (fsym + 1);
lnnoptr = aux->x_fcn.x_lnnoptr;
@@ -839,15 +872,13 @@ xcoff_process_linenos (struct backtrace_state *state, uintptr_t base_address,
/* If part of a function other than the beginning comes from an
include file, the line numbers are absolute, rather than
relative to the beginning of the function. */
for (i = 0; i < vec->count; ++i)
{
incl = (struct xcoff_incl *) vec->vec.base + i;
if (incl->begin <= lnnoptr && lnnoptr <= incl->end)
break;
}
incl = (struct xcoff_incl *) bsearch (&lnnoptr, vec->vec.base,
vec->count,
sizeof (struct xcoff_incl),
xcoff_incl_search);
if (begincl == -1)
begincl = (i < vec->count);
if (i < vec->count)
begincl = incl != NULL;
if (incl != NULL)
{
filename = incl->filename;
if (begincl == 1)
@@ -935,6 +966,9 @@ xcoff_initialize_fileline (struct backtrace_state *state,
i += asym->n_numaux;
}
backtrace_qsort (vec.vec.base, vec.count,
sizeof (struct xcoff_incl), xcoff_incl_compare);
filename = NULL;
fsym = NULL;
for (i = 0; i < nsyms; ++i)