/* * 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
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Kbuild | File | 658 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 1.55 KB | 0644 |
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barrier.h | File | 2.55 KB | 0644 |
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bfin-global.h | File | 2.8 KB | 0644 |
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bfin-lq035q1.h | File | 868 B | 0644 |
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bfin5xx_spi.h | File | 2.07 KB | 0644 |
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bfin_can.h | File | 36.04 KB | 0644 |
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bfin_dma.h | File | 5.46 KB | 0644 |
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bfin_pfmon.h | File | 1.11 KB | 0644 |
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bfin_ppi.h | File | 9.01 KB | 0644 |
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bfin_sdh.h | File | 7.2 KB | 0644 |
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bfin_serial.h | File | 17.02 KB | 0644 |
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bfin_simple_timer.h | File | 949 B | 0644 |
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bfin_sport.h | File | 1.21 KB | 0644 |
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bfin_sport3.h | File | 5.47 KB | 0644 |
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bfin_twi.h | File | 6.25 KB | 0644 |
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bfin_watchdog.h | File | 696 B | 0644 |
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bfrom.h | File | 3.36 KB | 0644 |
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bitops.h | File | 3.45 KB | 0644 |
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blackfin.h | File | 1.55 KB | 0644 |
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bug.h | File | 1.49 KB | 0644 |
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cache.h | File | 1.47 KB | 0644 |
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cacheflush.h | File | 3.79 KB | 0644 |
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cdef_LPBlackfin.h | File | 18.93 KB | 0644 |
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checksum.h | File | 899 B | 0644 |
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clkdev.h | File | 318 B | 0644 |
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clocks.h | File | 1.66 KB | 0644 |
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cmpxchg.h | File | 3.2 KB | 0644 |
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context.S | File | 5.92 KB | 0644 |
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cplb.h | File | 4.86 KB | 0644 |
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cplbinit.h | File | 1.6 KB | 0644 |
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cpu.h | File | 443 B | 0644 |
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def_LPBlackfin.h | File | 28.6 KB | 0644 |
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delay.h | File | 917 B | 0644 |
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dma-mapping.h | File | 1.09 KB | 0644 |
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dma.h | File | 9.28 KB | 0644 |
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dpmc.h | File | 18.24 KB | 0644 |
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early_printk.h | File | 1.09 KB | 0644 |
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elf.h | File | 4.88 KB | 0644 |
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entry.h | File | 5.27 KB | 0644 |
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exec.h | File | 37 B | 0644 |
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fixed_code.h | File | 806 B | 0644 |
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flat.h | File | 1.41 KB | 0644 |
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ftrace.h | File | 1.37 KB | 0644 |
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gpio.h | File | 5.91 KB | 0644 |
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gptimers.h | File | 8.95 KB | 0644 |
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hardirq.h | File | 301 B | 0644 |
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io.h | File | 1.52 KB | 0644 |
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ipipe.h | File | 5.81 KB | 0644 |
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ipipe_base.h | File | 2.38 KB | 0644 |
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irq.h | File | 879 B | 0644 |
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irq_handler.h | File | 1.93 KB | 0644 |
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irqflags.h | File | 7.13 KB | 0644 |
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kgdb.h | File | 3.23 KB | 0644 |
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l1layout.h | File | 879 B | 0644 |
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linkage.h | File | 205 B | 0644 |
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mem_init.h | File | 13.1 KB | 0644 |
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mem_map.h | File | 1.73 KB | 0644 |
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mmu.h | File | 713 B | 0644 |
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mmu_context.h | File | 5.35 KB | 0644 |
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module.h | File | 410 B | 0644 |
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nand.h | File | 895 B | 0644 |
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nmi.h | File | 195 B | 0644 |
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page.h | File | 546 B | 0644 |
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page_offset.h | File | 192 B | 0644 |
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pci.h | File | 310 B | 0644 |
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pda.h | File | 1.86 KB | 0644 |
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perf_event.h | File | 23 B | 0644 |
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pgtable.h | File | 3 KB | 0644 |
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pm.h | File | 590 B | 0644 |
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portmux.h | File | 16.38 KB | 0644 |
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processor.h | File | 3.21 KB | 0644 |
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pseudo_instructions.h | File | 391 B | 0644 |
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ptrace.h | File | 1.19 KB | 0644 |
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reboot.h | File | 446 B | 0644 |
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rwlock.h | File | 142 B | 0644 |
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scb.h | File | 445 B | 0644 |
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sections.h | File | 2 KB | 0644 |
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segment.h | File | 226 B | 0644 |
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smp.h | File | 1.34 KB | 0644 |
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spinlock.h | File | 1.87 KB | 0644 |
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spinlock_types.h | File | 495 B | 0644 |
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string.h | File | 1.04 KB | 0644 |
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switch_to.h | File | 997 B | 0644 |
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syscall.h | File | 2.15 KB | 0644 |
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thread_info.h | File | 2.66 KB | 0644 |
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time.h | File | 1.33 KB | 0644 |
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timex.h | File | 477 B | 0644 |
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tlb.h | File | 481 B | 0644 |
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tlbflush.h | File | 88 B | 0644 |
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trace.h | File | 2.67 KB | 0644 |
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traps.h | File | 4.87 KB | 0644 |
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uaccess.h | File | 5.79 KB | 0644 |
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unistd.h | File | 523 B | 0644 |
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vga.h | File | 29 B | 0644 |
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