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Bryan Wu1394f032007-05-06 14:50:22 -07001#ifndef __BFIN_ENTRY_H
2#define __BFIN_ENTRY_H
3
4#include <asm/setup.h>
5#include <asm/page.h>
6
7#ifdef __ASSEMBLY__
8
9#define LFLUSH_I_AND_D 0x00000808
10#define LSIGTRAP 5
11
12/* process bits for task_struct.flags */
13#define PF_TRACESYS_OFF 3
14#define PF_TRACESYS_BIT 5
15#define PF_PTRACED_OFF 3
16#define PF_PTRACED_BIT 4
17#define PF_DTRACE_OFF 1
18#define PF_DTRACE_BIT 5
19
Bernd Schmidt0893f122008-05-07 11:41:26 +080020/*
21 * NOTE! The single-stepping code assumes that all interrupt handlers
22 * start by saving SYSCFG on the stack with their first instruction.
23 */
24
Bryan Wu1394f032007-05-06 14:50:22 -070025/* This one is used for exceptions, emulation, and NMI. It doesn't push
26 RETI and doesn't do cli. */
27#define SAVE_ALL_SYS save_context_no_interrupts
28/* This is used for all normal interrupts. It saves a minimum of registers
29 to the stack, loads the IRQ number, and jumps to common code. */
30#define INTERRUPT_ENTRY(N) \
31 [--sp] = SYSCFG; \
32 \
33 [--sp] = P0; /*orig_p0*/ \
34 [--sp] = R0; /*orig_r0*/ \
35 [--sp] = (R7:0,P5:0); \
36 R0 = (N); \
37 jump __common_int_entry;
38
39/* For timer interrupts, we need to save IPEND, since the user_mode
40 macro accesses it to determine where to account time. */
41#define TIMER_INTERRUPT_ENTRY(N) \
42 [--sp] = SYSCFG; \
43 \
44 [--sp] = P0; /*orig_p0*/ \
45 [--sp] = R0; /*orig_r0*/ \
46 [--sp] = (R7:0,P5:0); \
47 p0.l = lo(IPEND); \
48 p0.h = hi(IPEND); \
49 r1 = [p0]; \
50 R0 = (N); \
51 jump __common_int_entry;
52
53/* This one pushes RETI without using CLI. Interrupts are enabled. */
54#define SAVE_CONTEXT_SYSCALL save_context_syscall
55#define SAVE_CONTEXT save_context_with_interrupts
56
57#define RESTORE_ALL_SYS restore_context_no_interrupts
58#define RESTORE_CONTEXT restore_context_with_interrupts
59
60#endif /* __ASSEMBLY__ */
61#endif /* __BFIN_ENTRY_H */