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| author | Bernd Schmidt <bernds@cygnus.co.uk> | 1999-09-30 13:40:41 +0000 |
|---|---|---|
| committer | Bernd Schmidt <crux@gcc.gnu.org> | 1999-09-30 13:40:41 +0000 |
| commit | d9d5c9de1c377b1104d371bc935a31e53e83cf8d (patch) | |
| tree | 15d8cd0891da1777322bd125841935d8803c44f4 /gcc/libgcc2.c | |
| parent | a89e95f9fb5a2c04a9efe3036fd90f1fb0b474c0 (diff) | |
| download | gcc-d9d5c9de1c377b1104d371bc935a31e53e83cf8d.zip gcc-d9d5c9de1c377b1104d371bc935a31e53e83cf8d.tar.gz gcc-d9d5c9de1c377b1104d371bc935a31e53e83cf8d.tar.bz2 | |
Use lookup table to get register sizes in dwarf2 eh
From-SVN: r29730
Diffstat (limited to 'gcc/libgcc2.c')
| -rw-r--r-- | gcc/libgcc2.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c index aa8839b..777112c 100644 --- a/gcc/libgcc2.c +++ b/gcc/libgcc2.c @@ -3120,6 +3120,18 @@ __get_eh_info () return &eh->info; } +#ifdef DWARF2_UNWIND_INFO +static int dwarf_reg_size_table_initialized = 0; +static char dwarf_reg_size_table[FIRST_PSEUDO_REGISTER]; + +static void +init_reg_size_table () +{ + __builtin_init_dwarf_reg_size_table (dwarf_reg_size_table); + dwarf_reg_size_table_initialized = 1; +} +#endif + #if __GTHREADS static void eh_threads_initialize () @@ -3152,12 +3164,24 @@ eh_context_initialize () /* Use static version of EH context. */ get_eh_context = &eh_context_static; } +#ifdef DWARF2_UNWIND_INFO + { + static __gthread_once_t once_regsizes = __GTHREAD_ONCE_INIT; + if (__gthread_once (&once_regsizes, init_reg_size_table) != 0 + || ! dwarf_reg_size_table_initialized) + init_reg_size_table (); + } +#endif #else /* no __GTHREADS */ /* Use static version of EH context. */ get_eh_context = &eh_context_static; +#ifdef DWARF2_UNWIND_INFO + init_reg_size_table (); +#endif + #endif /* no __GTHREADS */ return (*get_eh_context) (); @@ -3395,7 +3419,6 @@ EH_TABLE_LOOKUP #ifdef DWARF2_UNWIND_INFO - /* Return the table version of an exception descriptor */ short @@ -3620,7 +3643,7 @@ copy_reg (unsigned reg, frame_state *udata, frame_state *target_udata) word_type *preg = get_reg_addr (reg, udata, NULL); word_type *ptreg = get_reg_addr (reg, target_udata, NULL); - memcpy (ptreg, preg, __builtin_dwarf_reg_size (reg)); + memcpy (ptreg, preg, dwarf_reg_size_table [reg]); } /* Retrieve the return address for frame UDATA. */ |