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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
| commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
| tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /arch/arm/kernel/entry-armv.S | |
| parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) | |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index e25505004..9f157e7c5 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -92,7 +92,7 @@ * Invalid mode handlers */ .macro inv_entry, reason - sub sp, sp, #S_FRAME_SIZE + sub sp, sp, #PT_REGS_SIZE ARM( stmib sp, {r1 - lr} ) THUMB( stmia sp, {r0 - r12} ) THUMB( str sp, [sp, #S_SP] ) @@ -152,7 +152,7 @@ ENDPROC(__und_invalid) .macro svc_entry, stack_hole=0, trace=1, uaccess=1 UNWIND(.fnstart ) UNWIND(.save {r0 - pc} ) - sub sp, sp, #(S_FRAME_SIZE + 8 + \stack_hole - 4) + sub sp, sp, #(SVC_REGS_SIZE + \stack_hole - 4) #ifdef CONFIG_THUMB2_KERNEL SPFIX( str r0, [sp] ) @ temporarily saved SPFIX( mov r0, sp ) @@ -167,7 +167,7 @@ ENDPROC(__und_invalid) ldmia r0, {r3 - r5} add r7, sp, #S_SP - 4 @ here for interlock avoidance mov r6, #-1 @ "" "" "" "" - add r2, sp, #(S_FRAME_SIZE + 8 + \stack_hole - 4) + add r2, sp, #(SVC_REGS_SIZE + \stack_hole - 4) SPFIX( addeq r2, r2, #4 ) str r3, [sp, #-4]! @ save the "real" r0 copied @ from the exception stack @@ -185,6 +185,12 @@ ENDPROC(__und_invalid) @ stmia r7, {r2 - r6} + get_thread_info tsk + ldr r0, [tsk, #TI_ADDR_LIMIT] + mov r1, #TASK_SIZE + str r1, [tsk, #TI_ADDR_LIMIT] + str r0, [sp, #SVC_ADDR_LIMIT] + uaccess_save r0 .if \uaccess uaccess_disable r0 @@ -213,7 +219,6 @@ __irq_svc: irq_handler #ifdef CONFIG_PREEMPT - get_thread_info tsk ldr r8, [tsk, #TI_PREEMPT] @ get preempt count ldr r0, [tsk, #TI_FLAGS] @ get flags teq r8, #0 @ if preempt count != 0 @@ -290,6 +295,7 @@ __und_svc_fault: bl __und_fault __und_svc_finish: + get_thread_info tsk ldr r5, [sp, #S_PSR] @ Get SVC cpsr svc_exit r5 @ return from exception UNWIND(.fnend ) @@ -366,17 +372,17 @@ ENDPROC(__fiq_abt) /* * User mode handlers * - * EABI note: sp_svc is always 64-bit aligned here, so should S_FRAME_SIZE + * EABI note: sp_svc is always 64-bit aligned here, so should PT_REGS_SIZE */ -#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5) && (S_FRAME_SIZE & 7) +#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5) && (PT_REGS_SIZE & 7) #error "sizeof(struct pt_regs) must be a multiple of 8" #endif .macro usr_entry, trace=1, uaccess=1 UNWIND(.fnstart ) UNWIND(.cantunwind ) @ don't unwind the user space - sub sp, sp, #S_FRAME_SIZE + sub sp, sp, #PT_REGS_SIZE ARM( stmib sp, {r1 - r12} ) THUMB( stmia sp, {r0 - r12} ) |