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| author | Jim Wilson <wilson@tuliptree.org> | 2001-02-21 22:39:59 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@tuliptree.org> | 2001-02-21 22:39:59 +0000 |
| commit | 33d01f331b0673ed67fa8a71c9cb90f7d35d16b7 (patch) | |
| tree | ee034d403f66041d2b6f03db319859edf205ed6a /gas/config | |
| parent | dd425adaa8da7d06250ea4303bd0275e790adeba (diff) | |
| download | gdb-33d01f331b0673ed67fa8a71c9cb90f7d35d16b7.zip gdb-33d01f331b0673ed67fa8a71c9cb90f7d35d16b7.tar.gz gdb-33d01f331b0673ed67fa8a71c9cb90f7d35d16b7.tar.bz2 | |
Fix bugs in handling of the .restore directive.
* config/tc-ia64.c (struct unwind): Add member "prologue_count".
(dot_proc): Clear unwind.prologue_count to zero.
(dot_prologue): Increment unwind.prologue_count.
(dot_restore): If second operand is omitted, use
unwind.prologue_count -1 for "ecount" (# of additional regions to
pop). Decrement unwind.prologue_count by number of regions
popped.
Diffstat (limited to 'gas/config')
| -rw-r--r-- | gas/config/tc-ia64.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/gas/config/tc-ia64.c b/gas/config/tc-ia64.c index df566e2..56f80d9 100644 --- a/gas/config/tc-ia64.c +++ b/gas/config/tc-ia64.c @@ -624,6 +624,7 @@ static struct /* TRUE if processing unwind directives in a prologue region. */ int prologue; int prologue_mask; + unsigned int prologue_count; /* number of .prologues seen so far */ } unwind; typedef void (*vbyte_func) PARAMS ((int, char *, char *)); @@ -3047,7 +3048,7 @@ dot_restore (dummy) int dummy ATTRIBUTE_UNUSED; { expressionS e1, e2; - unsigned long ecount = 0; + unsigned long ecount; /* # of _additional_ regions to pop */ int sep; sep = parse_operand (&e1); @@ -3060,14 +3061,21 @@ dot_restore (dummy) if (sep == ',') { parse_operand (&e2); - if (e1.X_op != O_constant) + if (e2.X_op != O_constant || e2.X_add_number < 0) { - as_bad ("Second operand to .restore must be constant"); + as_bad ("Second operand to .restore must be a constant >= 0"); return; } - ecount = e1.X_op; + ecount = e2.X_add_number; } + else + ecount = unwind.prologue_count - 1; add_unwind_entry (output_epilogue (ecount)); + + if (ecount < unwind.prologue_count) + unwind.prologue_count -= ecount + 1; + else + unwind.prologue_count = 0; } static void @@ -3710,6 +3718,7 @@ dot_proc (dummy) demand_empty_rest_of_line (); ia64_do_align (16); + unwind.prologue_count = 0; unwind.list = unwind.tail = unwind.current_entry = NULL; unwind.personality_routine = 0; } @@ -3764,6 +3773,7 @@ dot_prologue (dummy) unwind.prologue = 1; unwind.prologue_mask = mask; + ++unwind.prologue_count; } static void |