diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/start/start.S | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/start/start.S b/c/src/lib/libbsp/sparc/shared/start/start.S index 3b9f841223..64498c6110 100644 --- a/c/src/lib/libbsp/sparc/shared/start/start.S +++ b/c/src/lib/libbsp/sparc/shared/start/start.S @@ -35,6 +35,15 @@ /* * System call optimized trap table entry */ +#define FPDIS_TRAP(_handler) \ + mov %psr, %l0 ; \ + sethi %hi(_handler), %l4 ; \ + jmp %l4+%lo(_handler); \ + sethi %hi(SPARC_PSR_EF_MASK), %l3 + +/* + * System call optimized trap table entry + */ #define IRQDIS_TRAP(_handler) \ mov %psr, %l0 ; \ sethi %hi(_handler), %l4 ; \ @@ -100,7 +109,11 @@ SYM(trap_table): ! exception BAD_TRAP; ! 02 illegal instruction BAD_TRAP; ! 03 privileged instruction +#if defined(SPARC_USE_LAZY_FP_SWITCH) + FPDIS_TRAP(SYM(syscall_lazy_fp_switch)); ! 04 fp disabled +#else BAD_TRAP; ! 04 fp disabled +#endif WOTRAP(5, SYM(window_overflow_trap_handler)); ! 05 window overflow WUTRAP(6, SYM(window_underflow_trap_handler));! 06 window underflow BAD_TRAP; ! 07 memory address not aligned @@ -209,7 +222,7 @@ SYM(CLOCK_SPEED): */ IRQDIS_TRAP(SYM(syscall_irqdis)); ! 89 IRQ Disable syscall trap IRQEN_TRAP(SYM(syscall_irqen)); ! 8A IRQ Enable syscall trap -#if SPARC_HAS_FPU == 1 +#if defined(SPARC_USE_SYNCHRONOUS_FP_SWITCH) IRQDIS_TRAP(SYM(syscall_irqdis_fp)); ! 8B IRQ disable ! and set PSR[EF] syscall trap #else |