diff options
Diffstat (limited to 'arch/arm/mm/proc-arm2,3.S')
| -rw-r--r-- | arch/arm/mm/proc-arm2,3.S | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/arm/mm/proc-arm2,3.S b/arch/arm/mm/proc-arm2,3.S index 86cab564a..263d79708 100644 --- a/arch/arm/mm/proc-arm2,3.S +++ b/arch/arm/mm/proc-arm2,3.S @@ -193,7 +193,7 @@ _arm2_3_data_abort: movs pc, lr _arm2_3_check_bugs: - movs pc, lr + bics pc, lr, #0x04000000 @ Clear FIQ disable bit /* * Processor specific - ARM2 @@ -206,6 +206,8 @@ LC0: .word SYMBOL_NAME(page_nr) * Params : prev Old task structure * : next New task structure for process to run * + * Returns : prev + * * Purpose : Perform a task switch, saving the old processes state, and restoring * the new. * @@ -218,15 +220,15 @@ _arm2_switch_to: str sp, [r0, #TSS_SAVE] @ Save sp_SVC ldr sp, [r1, #TSS_SAVE] @ Get saved sp_SVC mov r4, r1 - add r0, r1, #TSS_MEMCMAP @ Remap MEMC + add r7, r1, #TSS_MEMCMAP @ Remap MEMC ldr r1, LC0 ldr r1, [r1] -1: ldmia r0!, {r2, r3, r5, r6} +1: ldmia r7!, {r2, r3, r5, r6} strb r2, [r2] strb r3, [r3] strb r5, [r5] strb r6, [r6] - ldmia r0!, {r2, r3, r5, r6} + ldmia r7!, {r2, r3, r5, r6} strb r2, [r2] strb r3, [r3] strb r5, [r5] @@ -318,6 +320,8 @@ _arm2_proc_fin: movs pc, lr * Params : prev Old task structure * : next New task structure for process to run * + * Returns : prev + * * Purpose : Perform a task switch, saving the old processes state, and restoring * the new. * @@ -330,22 +334,22 @@ _arm3_switch_to: str sp, [r0, #TSS_SAVE] @ Save sp_SVC ldr sp, [r1, #TSS_SAVE] @ Get saved sp_SVC mov r4, r1 - add r0, r1, #TSS_MEMCMAP @ Remap MEMC + add r7, r1, #TSS_MEMCMAP @ Remap MEMC ldr r1, LC0 ldr r1, [r1] -1: ldmia r0!, {r2, r3, r5, r6} +1: ldmia r7!, {r2, r3, r5, r6} strb r2, [r2] strb r3, [r3] strb r5, [r5] strb r6, [r6] - ldmia r0!, {r2, r3, r5, r6} + ldmia r7!, {r2, r3, r5, r6} strb r2, [r2] strb r3, [r3] strb r5, [r5] strb r6, [r6] subs r1, r1, #8 bhi 1b - mcr p15, 0, r0, c1, c0, 0 @ flush cache + mcr p15, 0, r7, c1, c0, 0 @ flush cache ldmfd sp!, {r4 - r9, fp, pc}^ @ Load all regs saved previously /* * Function: arm3_remap_memc (struct task_struct *tsk) |