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| author | Doug Evans <dje@gnu.org> | 1996-04-24 00:00:53 +0000 |
|---|---|---|
| committer | Doug Evans <dje@gnu.org> | 1996-04-24 00:00:53 +0000 |
| commit | 5f4241d584de5cc88ad85c5d3497929435bbb69f (patch) | |
| tree | 1339c11ebfaa31c550f541844bf699538d12f52e | |
| parent | 6d29fc410279b31a70380d9bebd0b8cca0e3d8da (diff) | |
| download | gcc-5f4241d584de5cc88ad85c5d3497929435bbb69f.zip gcc-5f4241d584de5cc88ad85c5d3497929435bbb69f.tar.gz gcc-5f4241d584de5cc88ad85c5d3497929435bbb69f.tar.bz2 | |
sparc.c (output_function_prologue): In -mbroken-saverestore case, %sp = %fp - size.
* sparc/sparc.c (output_function_prologue): In -mbroken-saverestore
case, %sp = %fp - size.
From-SVN: r11872
| -rw-r--r-- | gcc/config/sparc/sparc.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 3ccbbe6..1708b37 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -3095,17 +3095,29 @@ output_function_prologue (file, size, leaf_function) fprintf (file, "\tsave %%sp,%%g1,%%sp\n"); } } - else + else if (! leaf_function && TARGET_BROKEN_SAVERESTORE) { - /* If the target has a broken save insn (only handles save %g0,%g0,%g0), - do the save and then handle like a leaf function. - We assume the environment will properly handle or otherwise avoid + /* We assume the environment will properly handle or otherwise avoid trouble associated with an interrupt occuring after the `save' or trap occuring during it. */ - if (TARGET_BROKEN_SAVERESTORE) - fprintf (file, "\tsave\n"); + fprintf (file, "\tsave\n"); if (actual_fsize <= 4096) + fprintf (file, "\tadd %%fp,-%d,%%sp\n", actual_fsize); + else if (actual_fsize <= 8192) + { + fprintf (file, "\tadd %%fp,-4096,%%sp\n"); + fprintf (file, "\tadd %%fp,-%d,%%sp\n", actual_fsize - 4096); + } + else + { + build_big_number (file, -actual_fsize, "%g1"); + fprintf (file, "\tadd %%fp,%%g1,%%sp\n"); + } + } + else /* leaf function */ + { + if (actual_fsize <= 4096) fprintf (file, "\tadd %%sp,-%d,%%sp\n", actual_fsize); else if (actual_fsize <= 8192) { |