|
|
|
|
/*
|
|
|
|
|
* entry.h - routines for context saving and restoring (for interrupts/exceptions)
|
|
|
|
|
*
|
|
|
|
|
* Copyright (c) 2005-2007 Analog Devices Inc.
|
|
|
|
|
*
|
|
|
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef __BLACKFIN_ENTRY_H
|
|
|
|
|
#define __BLACKFIN_ENTRY_H
|
|
|
|
|
#ifdef __ASSEMBLY__
|
|
|
|
|
|
|
|
|
|
#define SAVE_ALL_INT save_context_no_interrupts
|
|
|
|
|
#define SAVE_ALL_SYS save_context_no_interrupts
|
|
|
|
|
#define SAVE_CONTEXT save_context_with_interrupts
|
|
|
|
|
|
|
|
|
|
#define RESTORE_ALL restore_context_no_interrupts
|
|
|
|
|
#define RESTORE_ALL_SYS restore_context_no_interrupts
|
|
|
|
|
#define RESTORE_CONTEXT restore_context_with_interrupts
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* 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] = 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;
|
|
|
|
|
[--sp] = RETI;
|
|
|
|
|
[--sp] = RETX;
|
|
|
|
|
[--sp] = RETN;
|
|
|
|
|
[--sp] = RETE;
|
|
|
|
|
[--sp] = SEQSTAT;
|
|
|
|
|
[--sp] = SYSCFG;
|
|
|
|
|
#ifdef CONFIG_CMD_KGDB
|
|
|
|
|
p0.l = lo(IPEND)
|
|
|
|
|
p0.h = hi(IPEND)
|
|
|
|
|
r0 = [p0];
|
|
|
|
|
#endif
|
|
|
|
|
[--sp] = r0; /* Skip IPEND as well. */
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro save_context_no_interrupts
|
|
|
|
|
[--sp] = 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] = SYSCFG;
|
|
|
|
|
#ifdef CONFIG_CMD_KGDB
|
|
|
|
|
p0.l = lo(IPEND)
|
|
|
|
|
p0.h = hi(IPEND)
|
|
|
|
|
r0 = [p0];
|
|
|
|
|
#endif
|
|
|
|
|
[--sp] = r0; /* Skip IPEND as well. */
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro restore_context_no_interrupts
|
|
|
|
|
sp += 4;
|
|
|
|
|
SYSCFG = [sp++];
|
|
|
|
|
SEQSTAT = [sp++];
|
|
|
|
|
RETE = [sp++];
|
|
|
|
|
RETN = [sp++];
|
|
|
|
|
RETX = [sp++];
|
|
|
|
|
r0 = [sp++];
|
|
|
|
|
RETI = r0;
|
|
|
|
|
RETS = [sp++];
|
|
|
|
|
|
|
|
|
|
sp += 4;
|
|
|
|
|
|
|
|
|
|
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 += 4;
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
.macro restore_context_with_interrupts
|
|
|
|
|
sp += 4;
|
|
|
|
|
SYSCFG = [sp++];
|
|
|
|
|
SEQSTAT = [sp++];
|
|
|
|
|
RETE = [sp++];
|
|
|
|
|
RETN = [sp++];
|
|
|
|
|
RETX = [sp++];
|
|
|
|
|
RETI = [sp++];
|
|
|
|
|
RETS = [sp++];
|
|
|
|
|
|
|
|
|
|
sp += 4;
|
|
|
|
|
|
|
|
|
|
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 += 4;
|
|
|
|
|
.endm
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
#endif
|
