diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-11-15 21:33:35 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-11-15 21:33:35 +0000 |
| commit | 477e2d195fbaaab64fb5e6b8443982ad423d05b6 (patch) | |
| tree | 36548531ac8e11ecfffe51afbca0a26905f8d768 /cpukit | |
| parent | 2000-11-14 Jiri Gaisler <jgais@ws.estec.esa.nl> (diff) | |
| download | rtems-477e2d195fbaaab64fb5e6b8443982ad423d05b6.tar.bz2 | |
2000-11-14 Jiri Gaisler <jgais@ws.estec.esa.nl>
* cpu.c, rtems/cpu/sparc.h: Make floating point optional based
on gcc arguments. Do not initialize FP context if there is
no FPU. Flush instruction cache after installing RTEMS trap handler.
Diffstat (limited to 'cpukit')
| -rw-r--r-- | cpukit/score/cpu/sparc/ChangeLog | 6 | ||||
| -rw-r--r-- | cpukit/score/cpu/sparc/cpu.c | 8 | ||||
| -rw-r--r-- | cpukit/score/cpu/sparc/rtems/score/sparc.h | 7 |
3 files changed, 20 insertions, 1 deletions
diff --git a/cpukit/score/cpu/sparc/ChangeLog b/cpukit/score/cpu/sparc/ChangeLog index d3ceec3c9f..0c2efb42b0 100644 --- a/cpukit/score/cpu/sparc/ChangeLog +++ b/cpukit/score/cpu/sparc/ChangeLog @@ -1,3 +1,9 @@ +2000-11-14 Jiri Gaisler <jgais@ws.estec.esa.nl> + + * cpu.c, rtems/cpu/sparc.h: Make floating point optional based + on gcc arguments. Do not initialize FP context if there is + no FPU. Flush instruction cache after installing RTEMS trap handler. + 2000-11-09 Ralf Corsepius <corsepiu@faw.uni-ulm.de> * Makefile.am: Use ... instead of RTEMS_TOPdir in ACLOCAL_AMFLAGS. diff --git a/cpukit/score/cpu/sparc/cpu.c b/cpukit/score/cpu/sparc/cpu.c index 2ba0815058..9471d15591 100644 --- a/cpukit/score/cpu/sparc/cpu.c +++ b/cpukit/score/cpu/sparc/cpu.c @@ -86,6 +86,8 @@ void _CPU_Initialize( #endif +#if (SPARC_HAS_FPU == 1) + /* * This seems to be the most appropriate way to obtain an initial * FP context on the SPARC. The NULL fp context is copied it to @@ -94,6 +96,7 @@ void _CPU_Initialize( pointer = &_CPU_Null_fp_context; _CPU_Context_save_fp( &pointer ); +#endif /* * Grab our own copy of the user's CPU table. @@ -222,6 +225,11 @@ void _CPU_ISR_install_raw_handler( slot->sethi_of_handler_to_l4 |= (u32_handler & HIGH_BITS_MASK) >> HIGH_BITS_SHIFT; slot->jmp_to_low_of_handler_plus_l4 |= (u32_handler & LOW_BITS_MASK); + + /* need to flush icache after this !!! */ + + rtems_cache_invalidate_entire_instruction(); + } /*PAGE diff --git a/cpukit/score/cpu/sparc/rtems/score/sparc.h b/cpukit/score/cpu/sparc/rtems/score/sparc.h index 1d09116295..e6d7690702 100644 --- a/cpukit/score/cpu/sparc/rtems/score/sparc.h +++ b/cpukit/score/cpu/sparc/rtems/score/sparc.h @@ -65,7 +65,12 @@ extern "C" { * cpp predefine but gcc does not currently give us that information. */ -#define SPARC_HAS_FPU 1 + +#if defined(_SOFT_FLOAT) +#define SPARC_HAS_FPU 0 +#else +#define SPARC_HAS_FPU 1 +#endif #if SPARC_HAS_FPU #define CPU_MODEL_NAME "w/FPU" |