mirror of
https://github.com/tobast/libunwind-eh_elf.git
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(_Uia64_find_dyn_list): Don't exclude for UNW_REMOTE_ONLY.
Reformat #ifdef's a bit for improved readability. (Logical change 1.234)
This commit is contained in:
hp.com!davidm
parent
364a112ddd
commit
2376f6e6bc
1 changed files with 123 additions and 130 deletions
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@ -136,6 +136,92 @@ tdep_put_unwind_info (unw_addr_space_t as, unw_proc_info_t *pi, void *arg)
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}
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}
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PROTECTED unw_word_t
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_Uia64_find_dyn_list (unw_addr_space_t as, unw_dyn_info_t *di, void *arg)
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{
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unw_word_t hdr_addr, info_addr, hdr, directives, pers, cookie, off;
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unw_word_t start_offset, end_offset, info_offset, segbase;
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struct ia64_table_entry *e;
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size_t table_size;
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unw_word_t gp = di->gp;
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int ret;
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switch (di->format)
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{
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case UNW_INFO_FORMAT_DYNAMIC:
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default:
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return 0;
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case UNW_INFO_FORMAT_TABLE:
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e = (struct ia64_table_entry *) di->u.ti.table_data;
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table_size = di->u.ti.table_len * sizeof (di->u.ti.table_data[0]);
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segbase = di->u.ti.segbase;
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if (table_size < sizeof (struct ia64_table_entry))
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return 0;
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start_offset = e[0].start_offset;
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end_offset = e[0].end_offset;
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info_offset = e[0].info_offset;
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break;
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case UNW_INFO_FORMAT_REMOTE_TABLE:
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{
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unw_accessors_t *a = unw_get_accessors (as);
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unw_word_t e_addr = di->u.rti.table_data;
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table_size = di->u.rti.table_len * sizeof (unw_word_t);
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segbase = di->u.rti.segbase;
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if (table_size < sizeof (struct ia64_table_entry))
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return 0;
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if ( (ret = remote_read (e_addr, start_offset) < 0)
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|| (ret = remote_read (e_addr, end_offset) < 0)
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|| (ret = remote_read (e_addr, info_offset) < 0))
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return ret;
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}
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break;
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}
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if (start_offset != end_offset)
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/* dyn-list entry cover a zero-length "procedure" and should be
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first entry (note: technically a binary could contain code
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below the segment base, but this doesn't happen for normal
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binaries and certainly doesn't happen when libunwind is a
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separate shared object. For weird cases, the application may
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have to provide its own (slower) version of this routine. */
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return 0;
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hdr_addr = info_offset + segbase;
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info_addr = hdr_addr + 8;
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/* read the header word: */
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if ((ret = read_mem (as, hdr_addr, &hdr, arg)) < 0)
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return ret;
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if (IA64_UNW_VER (hdr) != 1
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|| IA64_UNW_FLAG_EHANDLER (hdr) || IA64_UNW_FLAG_UHANDLER (hdr))
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/* dyn-list entry must be version 1 and doesn't have ehandler
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or uhandler */
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return 0;
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if (IA64_UNW_LENGTH (hdr) != 1)
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/* dyn-list entry must consist of a single word of NOP directives */
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return 0;
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if ( ((ret = read_mem (as, info_addr, &directives, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x08, &pers, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x10, &cookie, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x18, &off, arg)) < 0))
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return 0;
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if (directives != 0 || pers != 0
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|| (!as->big_endian && cookie != 0x7473696c2d6e7964ULL)
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|| ( as->big_endian && cookie != 0x64796e2d6c697374ULL))
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return 0;
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/* OK, we ran the gauntlet and found it: */
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return off + gp;
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}
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#endif /* !UNW_LOCAL_ONLY */
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static inline const struct ia64_table_entry *
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@ -272,28 +358,23 @@ unw_search_ia64_unwind_table (unw_addr_space_t as, unw_word_t ip,
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#ifndef UNW_REMOTE_ONLY
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#if defined(HAVE_DL_ITERATE_PHDR)
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# if defined(HAVE_DL_ITERATE_PHDR)
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# include <link.h>
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# include <stdlib.h>
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#include <link.h>
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#include <stdlib.h>
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# if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 2) \
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|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && !defined(DT_CONFIG))
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# error You need GLIBC 2.2.4 or later on IA-64 Linux
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# endif
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#if __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 2) \
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|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && !defined(DT_CONFIG))
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# error You need GLIBC 2.2.4 or later on IA-64 Linux
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#endif
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#if defined(HAVE_GETUNWIND)
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extern unsigned long getunwind (void *buf, size_t len);
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#else /* HAVE_GETUNWIND */
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#include <unistd.h>
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#include <sys/syscall.h>
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# ifndef __NR_getunwind
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# define __NR_getunwind 1215
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# endif
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# if defined(HAVE_GETUNWIND)
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extern unsigned long getunwind (void *buf, size_t len);
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# else /* HAVE_GETUNWIND */
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# include <unistd.h>
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# include <sys/syscall.h>
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# ifndef __NR_getunwind
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# define __NR_getunwind 1215
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# endif
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static unsigned long
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getunwind (void *buf, size_t len)
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@ -301,7 +382,7 @@ getunwind (void *buf, size_t len)
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return syscall (SYS_getunwind, buf, len);
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}
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#endif /* HAVE_GETUNWIND */
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# endif /* HAVE_GETUNWIND */
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static unw_dyn_info_t kernel_table;
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@ -342,8 +423,9 @@ get_kernel_table (unw_dyn_info_t *di)
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return 0;
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}
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#ifndef UNW_LOCAL_ONLY
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# ifndef UNW_LOCAL_ONLY
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/* This is exported for the benefit of libunwind-ptrace.a. */
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PROTECTED int
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_Uia64_get_kernel_table (unw_dyn_info_t *di)
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{
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@ -357,108 +439,19 @@ _Uia64_get_kernel_table (unw_dyn_info_t *di)
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return 0;
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}
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PROTECTED unw_word_t
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_Uia64_find_dyn_list (unw_addr_space_t as, unw_dyn_info_t *di, void *arg)
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{
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unw_word_t hdr_addr, info_addr, hdr, directives, pers, cookie, off;
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unw_word_t start_offset, end_offset, info_offset, segbase;
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struct ia64_table_entry *e;
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size_t table_size;
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unw_word_t gp = di->gp;
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int ret;
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switch (di->format)
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{
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case UNW_INFO_FORMAT_DYNAMIC:
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default:
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return 0;
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case UNW_INFO_FORMAT_TABLE:
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e = (struct ia64_table_entry *) di->u.ti.table_data;
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table_size = di->u.ti.table_len * sizeof (di->u.ti.table_data[0]);
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segbase = di->u.ti.segbase;
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if (table_size < sizeof (struct ia64_table_entry))
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return 0;
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start_offset = e[0].start_offset;
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end_offset = e[0].end_offset;
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info_offset = e[0].info_offset;
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break;
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#ifndef UNW_LOCAL_ONLY
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case UNW_INFO_FORMAT_REMOTE_TABLE:
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{
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unw_accessors_t *a = unw_get_accessors (as);
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unw_word_t e_addr = di->u.rti.table_data;
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table_size = di->u.rti.table_len * sizeof (unw_word_t);
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segbase = di->u.rti.segbase;
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if (table_size < sizeof (struct ia64_table_entry))
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return 0;
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if ( (ret = remote_read (e_addr, start_offset) < 0)
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|| (ret = remote_read (e_addr, end_offset) < 0)
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|| (ret = remote_read (e_addr, info_offset) < 0))
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return ret;
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}
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break;
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#endif
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}
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if (start_offset != end_offset)
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/* dyn-list entry cover a zero-length "procedure" and should be
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first entry (note: technically a binary could contain code
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below the segment base, but this doesn't happen for normal
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binaries and certainly doesn't happen when libunwind is a
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separate shared object. For weird cases, the application may
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have to provide its own (slower) version of this routine. */
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return 0;
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hdr_addr = info_offset + segbase;
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info_addr = hdr_addr + 8;
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/* read the header word: */
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if ((ret = read_mem (as, hdr_addr, &hdr, arg)) < 0)
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return ret;
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if (IA64_UNW_VER (hdr) != 1
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|| IA64_UNW_FLAG_EHANDLER (hdr) || IA64_UNW_FLAG_UHANDLER (hdr))
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/* dyn-list entry must be version 1 and doesn't have ehandler
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or uhandler */
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return 0;
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if (IA64_UNW_LENGTH (hdr) != 1)
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/* dyn-list entry must consist of a single word of NOP directives */
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return 0;
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if ( ((ret = read_mem (as, info_addr, &directives, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x08, &pers, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x10, &cookie, arg)) < 0)
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|| ((ret = read_mem (as, info_addr + 0x18, &off, arg)) < 0))
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return 0;
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if (directives != 0 || pers != 0
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|| (!as->big_endian && cookie != 0x7473696c2d6e7964)
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|| ( as->big_endian && cookie != 0x64796e2d6c697374))
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return 0;
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/* OK, we ran the gauntlet and found it: */
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return off + gp;
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}
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#endif /* !UNW_LOCAL_ONLY */
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# endif /* !UNW_LOCAL_ONLY */
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static inline unsigned long
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current_gp (void)
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{
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#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
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# if defined(__GNUC__) && !defined(__INTEL_COMPILER)
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register unsigned long gp __asm__("gp");
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return gp;
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#elif HAVE_IA64INTRIN_H
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return __getReg(_IA64_REG_GP);
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#else
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# error Implement me.
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#endif
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# elif HAVE_IA64INTRIN_H
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return __getReg (_IA64_REG_GP);
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# else
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# error Implement me.
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# endif
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}
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static int
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@ -553,7 +546,7 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
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return 1;
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}
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# ifdef HAVE_DL_PHDR_REMOVALS_COUNTER
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# ifdef HAVE_DL_PHDR_REMOVALS_COUNTER
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static inline int
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validate_cache (unw_addr_space_t as)
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@ -579,7 +572,7 @@ validate_cache (unw_addr_space_t as)
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return -1;
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}
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# else /* HAVE_DL_PHDR_REMOVALS_COUNTER */
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# else /* !HAVE_DL_PHDR_REMOVALS_COUNTER */
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/* Check whether any phdrs have been removed since we last flushed the
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cache. If so we flush the cache and return -1, if not, we do
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@ -588,7 +581,7 @@ validate_cache (unw_addr_space_t as)
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static int
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check_callback (struct dl_phdr_info *info, size_t size, void *ptr)
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{
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#ifdef HAVE_STRUCT_DL_PHDR_INFO_DLPI_SUBS
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# ifdef HAVE_STRUCT_DL_PHDR_INFO_DLPI_SUBS
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unw_addr_space_t as = ptr;
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if (size <
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@ -605,9 +598,9 @@ check_callback (struct dl_phdr_info *info, size_t size, void *ptr)
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as->shared_object_removals = info->dlpi_subs;
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unw_flush_cache (as, 0, 0);
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return -1; /* indicate that there were removals */
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#else
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# else
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return 1;
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#endif
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# endif
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}
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static inline int
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@ -622,11 +615,11 @@ validate_cache (unw_addr_space_t as)
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return ret;
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}
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# endif /* HAVE_DL_PHDR_REMOVALS_COUNTER */
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# endif /* HAVE_DL_PHDR_REMOVALS_COUNTER */
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#elif defined(HAVE_DLMODINFO)
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# elif defined(HAVE_DLMODINFO)
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/* Support for HP-UX-style dlmodinfo() */
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# include <dlfcn.h>
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# include <dlfcn.h>
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static inline int
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validate_cache (unw_addr_space_t as)
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@ -634,13 +627,13 @@ validate_cache (unw_addr_space_t as)
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return 1;
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}
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#endif
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# endif /* !HAVE_DLMODINFO */
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HIDDEN int
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tdep_find_proc_info (unw_addr_space_t as, unw_word_t ip,
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unw_proc_info_t *pi, int need_unwind_info, void *arg)
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{
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#if defined(HAVE_DL_ITERATE_PHDR)
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# if defined(HAVE_DL_ITERATE_PHDR)
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unw_dyn_info_t di, *dip = &di;
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sigset_t saved_sigmask;
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int ret;
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@ -662,7 +655,7 @@ tdep_find_proc_info (unw_addr_space_t as, unw_word_t ip,
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return -UNW_ENOINFO;
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dip = &kernel_table;
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}
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#elif defined(HAVE_DLMODINFO)
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# elif defined(HAVE_DLMODINFO)
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# define UNWIND_TBL_32BIT 0x8000000000000000
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struct load_module_desc lmd;
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unw_dyn_info_t di, *dip = &di;
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@ -706,7 +699,7 @@ tdep_find_proc_info (unw_addr_space_t as, unw_word_t ip,
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Debug (16, "found table `%s': segbase=%lx, len=%lu, gp=%lx, "
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"table_data=%p\n", (char *) di.u.ti.name_ptr, di.u.ti.segbase,
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di.u.ti.table_len, di.gp, di.u.ti.table_data);
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#endif
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# endif
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/* now search the table: */
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return tdep_search_unwind_table (as, ip, dip, pi, need_unwind_info, arg);
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