diff options
Diffstat (limited to 'include/asm-sparc/asmmacro.h')
| -rw-r--r-- | include/asm-sparc/asmmacro.h | 158 |
1 files changed, 4 insertions, 154 deletions
diff --git a/include/asm-sparc/asmmacro.h b/include/asm-sparc/asmmacro.h index 8bf441c27..25211c93f 100644 --- a/include/asm-sparc/asmmacro.h +++ b/include/asm-sparc/asmmacro.h @@ -33,164 +33,14 @@ * lose. It makes sure the kernel has a proper window so that * c-code can be called. */ -#ifndef SMP_DEBUG -#define SAVE_ALL \ +#define SAVE_ALL_HEAD \ sethi %hi(trap_setup), %l4; \ - jmpl %l4 + %lo(trap_setup), %l6; \ - nop; -#else + jmpl %l4 + %lo(trap_setup), %l6; #define SAVE_ALL \ - GET_PROCESSOR_ID(l4); \ - set C_LABEL(trap_log), %l5; \ - sll %l4, 11, %l6; \ - add %l5, %l6, %l5; \ - set C_LABEL(trap_log_ent), %l6; \ - sll %l4, 2, %l4; \ - add %l6, %l4, %l6; \ - ld [%l6], %l6; \ - sll %l6, 3, %l6; \ - st %l1, [%l5 + %l6]; \ - add %l5, 4, %l5; \ - st %l0, [%l5 + %l6]; \ - set C_LABEL(trap_log_ent), %l5; \ - add %l5, %l4, %l5; \ - srl %l6, 3, %l6; \ - add %l6, 1, %l6; \ - and %l6, 255, %l6; \ - st %l6, [%l5]; \ - sethi %hi(trap_setup), %l4; \ - jmpl %l4 + %lo(trap_setup), %l6; \ + SAVE_ALL_HEAD \ nop; -#endif -/* All traps low-level code here must end with this macro. - * For SMP configurations the ret_trap_entry routine will - * have to appropriate code to actually release the kernel - * entry lock. - */ +/* All traps low-level code here must end with this macro. */ #define RESTORE_ALL b ret_trap_entry; clr %l6; -#ifndef __SMP__ - -#define ENTER_SYSCALL -#define LEAVE_SYSCALL -#define ENTER_IRQ -#define LEAVE_IRQ - -#else - -#define INCREMENT_COUNTER(symbol, tmp1, tmp2) \ - set C_LABEL(symbol), %tmp1; \ - ld [%tmp1], %tmp2; \ - add %tmp2, 1, %tmp2; \ - st %tmp2, [%tmp1]; - -#define DECREMENT_COUNTER(symbol, tmp1, tmp2) \ - set C_LABEL(symbol), %tmp1; \ - ld [%tmp1], %tmp2; \ - sub %tmp2, 1, %tmp2; \ - st %tmp2, [%tmp1]; - - /* This is so complicated I suggest you don't look at it. */ -#define ENTER_MASK(mask) \ - GET_PROCESSOR_OFFSET(l4) \ - set C_LABEL(smp_proc_in_lock), %l5; \ - ld [%l5 + %l4], %l6; \ - or %l6, mask, %l6; \ - st %l6, [%l5 + %l4]; \ -1: \ - set C_LABEL(kernel_flag), %l5; \ - ldstub [%l5], %l6; \ - cmp %l6, 0; \ - be 3f; \ - nop; \ - set C_LABEL(active_kernel_processor), %l5; \ - GET_PROCESSOR_ID(l4) \ - ldub [%l5], %l6; \ - cmp %l6, %l4; \ - be 4f; \ - nop; \ -2: \ - GET_PROCESSOR_MID(l4, l5) \ - set C_LABEL(sun4m_interrupts), %l5; \ - ld [%l5], %l5; \ - sll %l4, 12, %l4; \ - add %l5, %l4, %l5; \ - ld [%l5], %l4; \ - sethi %hi(0x80000000), %l6; \ - andcc %l6, %l4, %g0; \ - be 5f; \ - nop; \ - st %l6, [%l5 + 4]; \ - nop; nop; nop; \ - ld [%l5], %g0; \ - nop; nop; nop; \ - or %l0, PSR_PIL, %l4; \ - wr %l4, 0x0, %psr; \ - nop; nop; nop; \ - wr %l4, PSR_ET, %psr; \ - nop; nop; nop; \ - call C_LABEL(smp_message_irq); \ - nop; \ - wr %l0, 0x0, %psr; \ - nop; nop; nop; \ -5: \ - set C_LABEL(kernel_flag), %l5; \ - ldub [%l5], %l6; \ - cmp %l6, 0; \ - bne 2b; \ - nop; \ - b 1b; \ - nop; \ -3: \ - GET_PROCESSOR_ID(l4) \ - set C_LABEL(active_kernel_processor), %l5; \ - stb %l4, [%l5]; \ - GET_PROCESSOR_MID(l4, l5) \ - set C_LABEL(irq_rcvreg), %l5; \ - ld [%l5], %l5; \ - st %l4, [%l5]; \ -4: \ - -#define ENTER_SYSCALL \ - ENTER_MASK(SMP_FROM_SYSCALL) \ - INCREMENT_COUNTER(kernel_counter, l6, l5) \ - INCREMENT_COUNTER(syscall_count, l6, l5) - -#define ENTER_IRQ \ - ENTER_MASK(SMP_FROM_INT) \ - INCREMENT_COUNTER(kernel_counter, l6, l5) - -#define LEAVE_MASK(mask) \ - GET_PROCESSOR_OFFSET(l4) \ - set C_LABEL(smp_proc_in_lock), %l5; \ - ld [%l5 + %l4], %l6; \ - andn %l6, mask, %l6; \ - st %l6, [%l5 + %l4]; - -#define LEAVE_SYSCALL \ - LEAVE_MASK(SMP_FROM_SYSCALL) \ - DECREMENT_COUNTER(syscall_count, l6, l5) \ - set C_LABEL(kernel_counter), %l6; \ - ld [%l6], %l5; \ - subcc %l5, 1, %l5; \ - st %l5, [%l6]; \ - bne 1f; \ - nop; \ - set C_LABEL(active_kernel_processor), %l6; \ - mov NO_PROC_ID, %l5; \ - stb %l5, [%l6]; \ - set C_LABEL(kernel_flag), %l6; \ - stb %g0, [%l6]; \ -1: - -#define LEAVE_IRQ \ - LEAVE_MASK(SMP_FROM_INT) \ - INCREMENT_COUNTER(syscall_count, l6, l5) - - -#define RESTORE_ALL_FASTIRQ b,a ret_irq_entry; - -#endif /* !(__SMP__) */ - #endif /* !(_SPARC_ASMMACRO_H) */ |