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| author | Richard Stallman <rms@gnu.org> | 1992-11-06 08:22:24 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-11-06 08:22:24 +0000 |
| commit | b94301c2cb2b936ef25fd861e63bba94ee3268e2 (patch) | |
| tree | 8f3a12fd81a574429818d0cafa2dfd8b1d1e87d8 /gcc | |
| parent | 931553d837d3df3c65d8255add17dff148d7d075 (diff) | |
| download | gcc-b94301c2cb2b936ef25fd861e63bba94ee3268e2.zip gcc-b94301c2cb2b936ef25fd861e63bba94ee3268e2.tar.gz gcc-b94301c2cb2b936ef25fd861e63bba94ee3268e2.tar.bz2 | |
(expand_call)[ARGS_GROW_DOWNWARD] Fix fencepost error in calculating high_to_save and low_to_save.
(expand_call)[ARGS_GROW_DOWNWARD] Fix fencepost error in
calculating high_to_save and low_to_save. Use - high_to_save to
address stack_area.
From-SVN: r2699
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/calls.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 0e003cb..c23fb82 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -85,7 +85,7 @@ struct arg_data }; #ifdef ACCUMULATE_OUTGOING_ARGS -/* A vector of one char per word of stack space. A byte if non-zero if +/* A vector of one char per byte of stack space. A byte if non-zero if the corresponding stack location has been used. This vector is used to prevent a function call within an argument from clobbering any stack already set up. */ @@ -1437,7 +1437,11 @@ expand_call (exp, target, ignore) Here we compute the boundary of the that needs to be saved, if any. */ +#ifdef ARGS_GROW_DOWNWARD + for (i = 0; i < reg_parm_stack_space + 1; i++) +#else for (i = 0; i < reg_parm_stack_space; i++) +#endif { if (i >= highest_outgoing_arg_in_use || stack_usage_map[i] == 0) @@ -1463,8 +1467,15 @@ expand_call (exp, target, ignore) stack_area = gen_rtx (MEM, save_mode, memory_address (save_mode, + +#ifdef ARGS_GROW_DOWNWARD + plus_constant (argblock, + - high_to_save) +#else plus_constant (argblock, - low_to_save))); + low_to_save) +#endif + )); if (save_mode == BLKmode) { save_area = assign_stack_temp (BLKmode, num_to_save, 1); @@ -1759,7 +1770,12 @@ expand_call (exp, target, ignore) rtx stack_area = gen_rtx (MEM, save_mode, memory_address (save_mode, - plus_constant (argblock, low_to_save))); +#ifdef ARGS_GROW_DOWNWARD + plus_constant (argblock, - high_to_save) +#else + plus_constant (argblock, low_to_save) +#endif + )); if (save_mode != BLKmode) emit_move_insn (stack_area, save_area); |