diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2001-09-27 21:17:26 +0000 |
---|---|---|
committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2001-09-27 21:17:26 +0000 |
commit | 4009fd862af8be5f1475cc3c5b9b96d4719a32ff (patch) | |
tree | 7897d60fc3fd876000ac2a0e25f1cbd0a7fdddf4 /cpukit | |
parent | 2001-09-27 Joel Sherrill <joel@OARcorp.com> (diff) | |
download | rtems-4009fd862af8be5f1475cc3c5b9b96d4719a32ff.tar.bz2 |
2001-09-27 Jiri Gaisler <jiri@gaisler.com>
* cpu_asm.S: Small patch to fix a bug in the rtems sparc port. The
bug has been there all the time, but only hits the leon bsp since the
leon cpu has a 5-stage pipeline (erc32 has 4 stages).
Diffstat (limited to 'cpukit')
-rw-r--r-- | cpukit/score/cpu/sparc/cpu_asm.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/cpukit/score/cpu/sparc/cpu_asm.S b/cpukit/score/cpu/sparc/cpu_asm.S index 9e186a0bb9..b5ef4ebf69 100644 --- a/cpukit/score/cpu/sparc/cpu_asm.S +++ b/cpukit/score/cpu/sparc/cpu_asm.S @@ -52,8 +52,8 @@ SYM(_CPU_Context_save_fp): or %l1, %lo(SPARC_PSR_EF_MASK), %l1 or %l0, %l1, %l0 mov %l0, %psr ! **** ENABLE FLOAT ACCESS **** - - ld [%i0], %l0 + nop; nop; nop; ! Need three nops before EF is + ld [%i0], %l0 ! active due to pipeline delay!!! std %f0, [%l0 + FO_F1_OFFSET] std %f2, [%l0 + F2_F3_OFFSET] std %f4, [%l0 + F4_F5_OFFSET] @@ -101,8 +101,8 @@ SYM(_CPU_Context_restore_fp): or %l1, %lo(SPARC_PSR_EF_MASK), %l1 or %l0, %l1, %l0 mov %l0, %psr ! **** ENABLE FLOAT ACCESS **** - - ld [%i0], %l0 + nop; nop; nop; ! Need three nops before EF is + ld [%i0], %l0 ! active due to pipeline delay!!! ldd [%l0 + FO_F1_OFFSET], %f0 ldd [%l0 + F2_F3_OFFSET], %f2 ldd [%l0 + F4_F5_OFFSET], %f4 |