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| author | Richard Stallman <rms@gnu.org> | 1993-10-20 22:22:43 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1993-10-20 22:22:43 +0000 |
| commit | 297c72b635e085bea63af0a9f7e9a7b958a41da0 (patch) | |
| tree | 295afafe19e6c30fa9c86b9d2f4a5952bbbd9c76 /gcc/config/sparc | |
| parent | 92dee628c1b1e2819e6869feceb0943e25b30320 (diff) | |
| download | gcc-297c72b635e085bea63af0a9f7e9a7b958a41da0.zip gcc-297c72b635e085bea63af0a9f7e9a7b958a41da0.tar.gz gcc-297c72b635e085bea63af0a9f7e9a7b958a41da0.tar.bz2 | |
(INITIALIZE_TRAMPOLINE): Emit 3 flush instrutions.
From-SVN: r5840
Diffstat (limited to 'gcc/config/sparc')
| -rw-r--r-- | gcc/config/sparc/sparc.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index a60f80b..e988bbf 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -1015,7 +1015,10 @@ extern union tree_node *current_function_decl; This takes 16 insns: 2 shifts & 2 ands (to split up addresses), 4 sethi (to load in opcodes), 4 iors (to merge address and opcodes), and 4 writes (to store insns). This is a bit excessive. Perhaps a different - mechanism would be better here. */ + mechanism would be better here. + + Emit 3 FLUSH instructions (UNSPEC_VOLATILE 2) to synchonize the data + and instruction caches. */ #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ { \ @@ -1046,6 +1049,15 @@ extern union tree_node *current_function_decl; emit_move_insn (tem, g1_ori); \ emit_insn (gen_iorsi3 (low_cxt, low_cxt, tem)); \ emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 16)), low_cxt);\ + emit_insn (gen_rtx (UNSPEC_VOLATILE, VOIDmode, \ + gen_rtvec (1, plus_constant (TRAMP, 0)), \ + 2)); \ + emit_insn (gen_rtx (UNSPEC_VOLATILE, VOIDmode, \ + gen_rtvec (1, plus_constant (TRAMP, 8)), \ + 2)); \ + emit_insn (gen_rtx (UNSPEC_VOLATILE, VOIDmode, \ + gen_rtvec (1, plus_constant (TRAMP, 16)), \ + 2)); \ } /* Generate necessary RTL for __builtin_saveregs(). |