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To be able to run DSP-enabled userspace applications we need to save and restore following DSP-related registers: At IRQ/exception entry/exit: * DSP_CTRL (save it and reset to value suitable for kernel) * ACC0_LO, ACC0_HI (we already save them as r58, r59 pair) At context switch: * ACC0_GLO, ACC0_GHI * DSP_BFLY0, DSP_FFT_CTRL Reviewed-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*/
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/thread_info.h>
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#include <linux/kbuild.h>
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#include <linux/ptrace.h>
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#include <asm/hardirq.h>
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#include <asm/page.h>
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int main(void)
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{
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DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
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DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack));
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BLANK();
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DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
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DEFINE(THREAD_CALLEE_REG, offsetof(struct thread_struct, callee_reg));
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DEFINE(THREAD_FAULT_ADDR,
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offsetof(struct thread_struct, fault_address));
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BLANK();
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DEFINE(THREAD_INFO_FLAGS, offsetof(struct thread_info, flags));
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DEFINE(THREAD_INFO_PREEMPT_COUNT,
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offsetof(struct thread_info, preempt_count));
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BLANK();
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DEFINE(TASK_ACT_MM, offsetof(struct task_struct, active_mm));
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DEFINE(TASK_TGID, offsetof(struct task_struct, tgid));
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DEFINE(TASK_PID, offsetof(struct task_struct, pid));
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DEFINE(TASK_COMM, offsetof(struct task_struct, comm));
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DEFINE(MM_CTXT, offsetof(struct mm_struct, context));
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DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
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DEFINE(MM_CTXT_ASID, offsetof(mm_context_t, asid));
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BLANK();
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DEFINE(PT_status32, offsetof(struct pt_regs, status32));
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DEFINE(PT_event, offsetof(struct pt_regs, event));
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DEFINE(PT_sp, offsetof(struct pt_regs, sp));
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DEFINE(PT_r0, offsetof(struct pt_regs, r0));
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DEFINE(PT_r1, offsetof(struct pt_regs, r1));
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DEFINE(PT_r2, offsetof(struct pt_regs, r2));
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DEFINE(PT_r3, offsetof(struct pt_regs, r3));
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DEFINE(PT_r4, offsetof(struct pt_regs, r4));
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DEFINE(PT_r5, offsetof(struct pt_regs, r5));
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DEFINE(PT_r6, offsetof(struct pt_regs, r6));
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DEFINE(PT_r7, offsetof(struct pt_regs, r7));
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DEFINE(PT_r8, offsetof(struct pt_regs, r8));
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DEFINE(PT_r10, offsetof(struct pt_regs, r10));
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DEFINE(PT_r26, offsetof(struct pt_regs, r26));
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DEFINE(PT_ret, offsetof(struct pt_regs, ret));
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DEFINE(PT_blink, offsetof(struct pt_regs, blink));
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DEFINE(PT_lpe, offsetof(struct pt_regs, lp_end));
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DEFINE(PT_lpc, offsetof(struct pt_regs, lp_count));
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DEFINE(PT_user_r25, offsetof(struct pt_regs, user_r25));
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DEFINE(SZ_CALLEE_REGS, sizeof(struct callee_regs));
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DEFINE(SZ_PT_REGS, sizeof(struct pt_regs));
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#ifdef CONFIG_ISA_ARCV2
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OFFSET(PT_r12, pt_regs, r12);
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OFFSET(PT_r30, pt_regs, r30);
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#endif
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#ifdef CONFIG_ARC_HAS_ACCL_REGS
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OFFSET(PT_r58, pt_regs, r58);
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OFFSET(PT_r59, pt_regs, r59);
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#endif
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#ifdef CONFIG_ARC_DSP_SAVE_RESTORE_REGS
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OFFSET(PT_DSP_CTRL, pt_regs, DSP_CTRL);
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#endif
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return 0;
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}
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