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csky: fixup save hi,lo,dspcr regs in switch_stack.

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HI, LO, DSPCR registers are 807/810 related regs and no need for 610/860.
All of the regs must be saved in pt_regs and switch_stack. This patch
fixup saving dspcr reg in switch_stack and pt_regs.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
This commit is contained in:
Guo Ren
2018-12-31 15:17:48 +08:00
parent 31295a72b5
commit 789154c2ad
8 changed files with 79 additions and 68 deletions
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39
arch/csky/include/uapi/asm/ptrace.h
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@@ -36,7 +36,7 @@ struct pt_regs {
unsigned long rhi;
unsigned long rlo;
unsigned long pad; /* reserved */
unsigned long dcsr;
#endif
};
@@ -48,43 +48,6 @@ struct user_fp {
unsigned long reserved;
};
/*
* Switch stack for switch_to after push pt_regs.
*
* ABI_CSKYV2: r4 ~ r11, r15 ~ r17, r26 ~ r30;
* ABI_CSKYV1: r8 ~ r14, r15;
*/
struct switch_stack {
#if defined(__CSKYABIV2__)
unsigned long r4;
unsigned long r5;
unsigned long r6;
unsigned long r7;
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
#else
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r12;
unsigned long r13;
unsigned long r14;
#endif
unsigned long r15;
#if defined(__CSKYABIV2__)
unsigned long r16;
unsigned long r17;
unsigned long r26;
unsigned long r27;
unsigned long r28;
unsigned long r29;
unsigned long r30;
#endif
};
#ifdef __KERNEL__
#define PS_S 0x80000000 /* Supervisor Mode */