diff options
Diffstat (limited to 'arch/blackfin/include/asm/context.S')
| -rw-r--r-- | arch/blackfin/include/asm/context.S | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/arch/blackfin/include/asm/context.S b/arch/blackfin/include/asm/context.S deleted file mode 100644 index 507e7aa6a561..000000000000 --- a/arch/blackfin/include/asm/context.S +++ /dev/null @@ -1,407 +0,0 @@ -/* - * Copyright 2007-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -/* - * NOTE! The single-stepping code assumes that all interrupt handlers - * start by saving SYSCFG on the stack with their first instruction. - */ - -/* - * Code to save processor context. - * We even save the register which are preserved by a function call - * - r4, r5, r6, r7, p3, p4, p5 - */ -.macro save_context_with_interrupts - [--sp] = SYSCFG; - - [--sp] = P0; /*orig_p0*/ - [--sp] = R0; /*orig_r0*/ - - [--sp] = ( R7:0, P5:0 ); - [--sp] = fp; - [--sp] = usp; - - [--sp] = i0; - [--sp] = i1; - [--sp] = i2; - [--sp] = i3; - - [--sp] = m0; - [--sp] = m1; - [--sp] = m2; - [--sp] = m3; - - [--sp] = l0; - [--sp] = l1; - [--sp] = l2; - [--sp] = l3; - - [--sp] = b0; - [--sp] = b1; - [--sp] = b2; - [--sp] = b3; - [--sp] = a0.x; - [--sp] = a0.w; - [--sp] = a1.x; - [--sp] = a1.w; - - [--sp] = LC0; - [--sp] = LC1; - [--sp] = LT0; - [--sp] = LT1; - [--sp] = LB0; - [--sp] = LB1; - - [--sp] = ASTAT; - - [--sp] = r0; /* Skip reserved */ - [--sp] = RETS; - r0 = RETI; - [--sp] = r0; - [--sp] = RETX; - [--sp] = RETN; - [--sp] = RETE; - [--sp] = SEQSTAT; - [--sp] = r0; /* Skip IPEND as well. */ - /* Switch to other method of keeping interrupts disabled. */ -#ifdef CONFIG_DEBUG_HWERR - r0 = 0x3f; - sti r0; -#else - cli r0; -#endif -#ifdef CONFIG_TRACE_IRQFLAGS - sp += -12; - call _trace_hardirqs_off; - sp += 12; -#endif - [--sp] = RETI; /*orig_pc*/ - /* Clear all L registers. */ - r0 = 0 (x); - l0 = r0; - l1 = r0; - l2 = r0; - l3 = r0; -.endm - -.macro save_context_syscall - [--sp] = SYSCFG; - - [--sp] = P0; /*orig_p0*/ - [--sp] = R0; /*orig_r0*/ - [--sp] = ( R7:0, P5:0 ); - [--sp] = fp; - [--sp] = usp; - - [--sp] = i0; - [--sp] = i1; - [--sp] = i2; - [--sp] = i3; - - [--sp] = m0; - [--sp] = m1; - [--sp] = m2; - [--sp] = m3; - - [--sp] = l0; - [--sp] = l1; - [--sp] = l2; - [--sp] = l3; - - [--sp] = b0; - [--sp] = b1; - [--sp] = b2; - [--sp] = b3; - [--sp] = a0.x; - [--sp] = a0.w; - [--sp] = a1.x; - [--sp] = a1.w; - - [--sp] = LC0; - [--sp] = LC1; - [--sp] = LT0; - [--sp] = LT1; - [--sp] = LB0; - [--sp] = LB1; - - [--sp] = ASTAT; - - [--sp] = r0; /* Skip reserved */ - [--sp] = RETS; - r0 = RETI; - [--sp] = r0; - [--sp] = RETX; - [--sp] = RETN; - [--sp] = RETE; - [--sp] = SEQSTAT; - [--sp] = r0; /* Skip IPEND as well. */ - [--sp] = RETI; /*orig_pc*/ - /* Clear all L registers. */ - r0 = 0 (x); - l0 = r0; - l1 = r0; - l2 = r0; - l3 = r0; -.endm - -.macro save_context_no_interrupts - [--sp] = SYSCFG; - [--sp] = P0; /* orig_p0 */ - [--sp] = R0; /* orig_r0 */ - [--sp] = ( R7:0, P5:0 ); - [--sp] = fp; - [--sp] = usp; - - [--sp] = i0; - [--sp] = i1; - [--sp] = i2; - [--sp] = i3; - - [--sp] = m0; - [--sp] = m1; - [--sp] = m2; - [--sp] = m3; - - [--sp] = l0; - [--sp] = l1; - [--sp] = l2; - [--sp] = l3; - - [--sp] = b0; - [--sp] = b1; - [--sp] = b2; - [--sp] = b3; - [--sp] = a0.x; - [--sp] = a0.w; - [--sp] = a1.x; - [--sp] = a1.w; - - [--sp] = LC0; - [--sp] = LC1; - [--sp] = LT0; - [--sp] = LT1; - [--sp] = LB0; - [--sp] = LB1; - - [--sp] = ASTAT; - -#ifdef CONFIG_KGDB - fp = 0(Z); - r1 = sp; - r1 += 60; - r1 += 60; - r1 += 60; - [--sp] = r1; -#else - [--sp] = r0; /* Skip reserved */ -#endif - [--sp] = RETS; - r0 = RETI; - [--sp] = r0; - [--sp] = RETX; - [--sp] = RETN; - [--sp] = RETE; - [--sp] = SEQSTAT; -#ifdef CONFIG_DEBUG_KERNEL - p1.l = lo(IPEND); - p1.h = hi(IPEND); - r1 = [p1]; - [--sp] = r1; -#else - [--sp] = r0; /* Skip IPEND as well. */ -#endif - [--sp] = r0; /*orig_pc*/ - /* Clear all L registers. */ - r0 = 0 (x); - l0 = r0; - l1 = r0; - l2 = r0; - l3 = r0; -.endm - -.macro restore_context_no_interrupts - sp += 4; /* Skip orig_pc */ - sp += 4; /* Skip IPEND */ - SEQSTAT = [sp++]; - RETE = [sp++]; - RETN = [sp++]; - RETX = [sp++]; - r0 = [sp++]; - RETI = r0; /* Restore RETI indirectly when in exception */ - RETS = [sp++]; - - sp += 4; /* Skip Reserved */ - - ASTAT = [sp++]; - - LB1 = [sp++]; - LB0 = [sp++]; - LT1 = [sp++]; - LT0 = [sp++]; - LC1 = [sp++]; - LC0 = [sp++]; - - a1.w = [sp++]; - a1.x = [sp++]; - a0.w = [sp++]; - a0.x = [sp++]; - b3 = [sp++]; - b2 = [sp++]; - b1 = [sp++]; - b0 = [sp++]; - - l3 = [sp++]; - l2 = [sp++]; - l1 = [sp++]; - l0 = [sp++]; - - m3 = [sp++]; - m2 = [sp++]; - m1 = [sp++]; - m0 = [sp++]; - - i3 = [sp++]; - i2 = [sp++]; - i1 = [sp++]; - i0 = [sp++]; - - sp += 4; - fp = [sp++]; - - ( R7 : 0, P5 : 0) = [ SP ++ ]; - sp += 8; /* Skip orig_r0/orig_p0 */ - SYSCFG = [sp++]; -.endm - -.macro restore_context_with_interrupts - sp += 4; /* Skip orig_pc */ - sp += 4; /* Skip IPEND */ - SEQSTAT = [sp++]; - RETE = [sp++]; - RETN = [sp++]; - RETX = [sp++]; - RETI = [sp++]; - -#ifdef CONFIG_TRACE_IRQFLAGS - sp += -12; - call _trace_hardirqs_on; - sp += 12; -#endif - - RETS = [sp++]; - -#ifdef CONFIG_SMP - GET_PDA(p0, r0); - r0 = [p0 + PDA_IRQFLAGS]; -#else - p0.h = _bfin_irq_flags; - p0.l = _bfin_irq_flags; - r0 = [p0]; -#endif - sti r0; - - sp += 4; /* Skip Reserved */ - - ASTAT = [sp++]; - - LB1 = [sp++]; - LB0 = [sp++]; - LT1 = [sp++]; - LT0 = [sp++]; - LC1 = [sp++]; - LC0 = [sp++]; - - a1.w = [sp++]; - a1.x = [sp++]; - a0.w = [sp++]; - a0.x = [sp++]; - b3 = [sp++]; - b2 = [sp++]; - b1 = [sp++]; - b0 = [sp++]; - - l3 = [sp++]; - l2 = [sp++]; - l1 = [sp++]; - l0 = [sp++]; - - m3 = [sp++]; - m2 = [sp++]; - m1 = [sp++]; - m0 = [sp++]; - - i3 = [sp++]; - i2 = [sp++]; - i1 = [sp++]; - i0 = [sp++]; - - sp += 4; - fp = [sp++]; - - ( R7 : 0, P5 : 0) = [ SP ++ ]; - sp += 8; /* Skip orig_r0/orig_p0 */ - csync; - SYSCFG = [sp++]; - csync; -.endm - -.macro save_context_cplb - [--sp] = (R7:0, P5:0); - [--sp] = fp; - - [--sp] = a0.x; - [--sp] = a0.w; - [--sp] = a1.x; - [--sp] = a1.w; - - [--sp] = LC0; - [--sp] = LC1; - [--sp] = LT0; - [--sp] = LT1; - [--sp] = LB0; - [--sp] = LB1; - - [--sp] = RETS; -.endm - -.macro restore_context_cplb - RETS = [sp++]; - - LB1 = [sp++]; - LB0 = [sp++]; - LT1 = [sp++]; - LT0 = [sp++]; - LC1 = [sp++]; - LC0 = [sp++]; - - a1.w = [sp++]; - a1.x = [sp++]; - a0.w = [sp++]; - a0.x = [sp++]; - - fp = [sp++]; - - (R7:0, P5:0) = [SP++]; -.endm - -.macro pseudo_long_call func:req, scratch:req -#ifdef CONFIG_ROMKERNEL - \scratch\().l = \func; - \scratch\().h = \func; - call (\scratch); -#else - call \func; -#endif -.endm - -#if defined(CONFIG_BFIN_SCRATCH_REG_RETN) -# define EX_SCRATCH_REG RETN -#elif defined(CONFIG_BFIN_SCRATCH_REG_RETE) -# define EX_SCRATCH_REG RETE -#else -# define EX_SCRATCH_REG CYCLES -#endif - |