linux/arch/arc/kernel/asm-offsets.c
Eugeniy Paltsev 7321e2ea0d ARC: add support for DSP-enabled userspace applications
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>
2020-03-16 10:30:49 -07:00

85 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*/
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/thread_info.h>
#include <linux/kbuild.h>
#include <linux/ptrace.h>
#include <asm/hardirq.h>
#include <asm/page.h>
int main(void)
{
DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack));
BLANK();
DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
DEFINE(THREAD_CALLEE_REG, offsetof(struct thread_struct, callee_reg));
DEFINE(THREAD_FAULT_ADDR,
offsetof(struct thread_struct, fault_address));
BLANK();
DEFINE(THREAD_INFO_FLAGS, offsetof(struct thread_info, flags));
DEFINE(THREAD_INFO_PREEMPT_COUNT,
offsetof(struct thread_info, preempt_count));
BLANK();
DEFINE(TASK_ACT_MM, offsetof(struct task_struct, active_mm));
DEFINE(TASK_TGID, offsetof(struct task_struct, tgid));
DEFINE(TASK_PID, offsetof(struct task_struct, pid));
DEFINE(TASK_COMM, offsetof(struct task_struct, comm));
DEFINE(MM_CTXT, offsetof(struct mm_struct, context));
DEFINE(MM_PGD, offsetof(struct mm_struct, pgd));
DEFINE(MM_CTXT_ASID, offsetof(mm_context_t, asid));
BLANK();
DEFINE(PT_status32, offsetof(struct pt_regs, status32));
DEFINE(PT_event, offsetof(struct pt_regs, event));
DEFINE(PT_sp, offsetof(struct pt_regs, sp));
DEFINE(PT_r0, offsetof(struct pt_regs, r0));
DEFINE(PT_r1, offsetof(struct pt_regs, r1));
DEFINE(PT_r2, offsetof(struct pt_regs, r2));
DEFINE(PT_r3, offsetof(struct pt_regs, r3));
DEFINE(PT_r4, offsetof(struct pt_regs, r4));
DEFINE(PT_r5, offsetof(struct pt_regs, r5));
DEFINE(PT_r6, offsetof(struct pt_regs, r6));
DEFINE(PT_r7, offsetof(struct pt_regs, r7));
DEFINE(PT_r8, offsetof(struct pt_regs, r8));
DEFINE(PT_r10, offsetof(struct pt_regs, r10));
DEFINE(PT_r26, offsetof(struct pt_regs, r26));
DEFINE(PT_ret, offsetof(struct pt_regs, ret));
DEFINE(PT_blink, offsetof(struct pt_regs, blink));
DEFINE(PT_lpe, offsetof(struct pt_regs, lp_end));
DEFINE(PT_lpc, offsetof(struct pt_regs, lp_count));
DEFINE(PT_user_r25, offsetof(struct pt_regs, user_r25));
DEFINE(SZ_CALLEE_REGS, sizeof(struct callee_regs));
DEFINE(SZ_PT_REGS, sizeof(struct pt_regs));
#ifdef CONFIG_ISA_ARCV2
OFFSET(PT_r12, pt_regs, r12);
OFFSET(PT_r30, pt_regs, r30);
#endif
#ifdef CONFIG_ARC_HAS_ACCL_REGS
OFFSET(PT_r58, pt_regs, r58);
OFFSET(PT_r59, pt_regs, r59);
#endif
#ifdef CONFIG_ARC_DSP_SAVE_RESTORE_REGS
OFFSET(PT_DSP_CTRL, pt_regs, DSP_CTRL);
#endif
return 0;
}