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1 | #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 | ||
0893f125 BS |
20 | /* |
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 | ||
1394f032 BW |
25 | /* 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 */ |