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| author | Eric Botcazou <ebotcazou@adacore.com> | 2012-03-31 16:24:04 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2012-03-31 16:24:04 +0000 |
| commit | 9a9dcce8e8f235bddcbb89bf6010577686b4627b (patch) | |
| tree | fda83759f1936ac74f3ccd9fa96c2c489dd575ae /libgcc/config | |
| parent | 71bb37ba99c71d21d504b91bd0c8904d89f2db58 (diff) | |
| download | gcc-9a9dcce8e8f235bddcbb89bf6010577686b4627b.tar.gz | |
unwind-ia64.c (uw_install_context): Manually save LC if it hasn't been previously saved.
* config/ia64/unwind-ia64.c (uw_install_context): Manually save LC
if it hasn't been previously saved.
From-SVN: r186045
Diffstat (limited to 'libgcc/config')
| -rw-r--r-- | libgcc/config/ia64/unwind-ia64.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libgcc/config/ia64/unwind-ia64.c b/libgcc/config/ia64/unwind-ia64.c index 10cf1363b1b..2bb9100a499 100644 --- a/libgcc/config/ia64/unwind-ia64.c +++ b/libgcc/config/ia64/unwind-ia64.c @@ -2169,8 +2169,20 @@ uw_install_context (struct _Unwind_Context *current __attribute__((unused)), struct _Unwind_Context *target) { unw_word ireg_buf[4], ireg_nat = 0, ireg_pr = 0; + unw_word saved_lc; int i; + /* ??? LC is a fixed register so the call to __builtin_unwind_init in + uw_init_context doesn't cause it to be saved. In case it isn't in + the user frames either, we need to manually do so here, lest it be + clobbered by the loop just below. */ + if (target->lc_loc == NULL) + { + register unw_word lc asm ("ar.lc"); + saved_lc = lc; + target->lc_loc = &saved_lc; + } + /* Copy integer register data from the target context to a temporary buffer. Do this so that we can frob AR.UNAT to get the NaT bits for these registers set properly. */ |