android_kernel_xiaomi_sm8350/arch/blackfin/include/asm/entry.h
Yi Li 6a01f23033 Blackfin arch: merge adeos blackfin part to arch/blackfin/
[Mike Frysinger <vapier.adi@gmail.com>:
 - handle bf531/bf532/bf534/bf536 variants in ipipe.h
 - cleanup IPIPE logic for bfin_set_irq_handler()
 - cleanup ipipe asm code a bit and add missing ENDPROC()
 - simplify IPIPE code in trap_c
 - unify some of the IPIPE code and fix style
 - simplify DO_IRQ_L1 handling with ipipe code
 - revert IRQ_SW_INT# addition from ipipe merge
 - remove duplicate get_{c,s}clk() prototypes
]

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00

73 lines
2.0 KiB
C

#ifndef __BFIN_ENTRY_H
#define __BFIN_ENTRY_H
#include <asm/setup.h>
#include <asm/page.h>
#ifdef __ASSEMBLY__
#define LFLUSH_I_AND_D 0x00000808
#define LSIGTRAP 5
/* process bits for task_struct.flags */
#define PF_TRACESYS_OFF 3
#define PF_TRACESYS_BIT 5
#define PF_PTRACED_OFF 3
#define PF_PTRACED_BIT 4
#define PF_DTRACE_OFF 1
#define PF_DTRACE_BIT 5
/*
* NOTE! The single-stepping code assumes that all interrupt handlers
* start by saving SYSCFG on the stack with their first instruction.
*/
/* This one is used for exceptions, emulation, and NMI. It doesn't push
RETI and doesn't do cli. */
#define SAVE_ALL_SYS save_context_no_interrupts
/* This is used for all normal interrupts. It saves a minimum of registers
to the stack, loads the IRQ number, and jumps to common code. */
#ifdef CONFIG_IPIPE
# define LOAD_IPIPE_IPEND \
P0.l = lo(IPEND); \
P0.h = hi(IPEND); \
R1 = [P0];
#else
# define LOAD_IPIPE_IPEND
#endif
#define INTERRUPT_ENTRY(N) \
[--sp] = SYSCFG; \
\
[--sp] = P0; /*orig_p0*/ \
[--sp] = R0; /*orig_r0*/ \
[--sp] = (R7:0,P5:0); \
R0 = (N); \
LOAD_IPIPE_IPEND \
jump __common_int_entry;
/* For timer interrupts, we need to save IPEND, since the user_mode
macro accesses it to determine where to account time. */
#define TIMER_INTERRUPT_ENTRY(N) \
[--sp] = SYSCFG; \
\
[--sp] = P0; /*orig_p0*/ \
[--sp] = R0; /*orig_r0*/ \
[--sp] = (R7:0,P5:0); \
p0.l = lo(IPEND); \
p0.h = hi(IPEND); \
r1 = [p0]; \
R0 = (N); \
jump __common_int_entry;
/* This one pushes RETI without using CLI. Interrupts are enabled. */
#define SAVE_CONTEXT_SYSCALL save_context_syscall
#define SAVE_CONTEXT save_context_with_interrupts
#define SAVE_CONTEXT_CPLB save_context_cplb
#define RESTORE_ALL_SYS restore_context_no_interrupts
#define RESTORE_CONTEXT restore_context_with_interrupts
#define RESTORE_CONTEXT_CPLB restore_context_cplb
#endif /* __ASSEMBLY__ */
#endif /* __BFIN_ENTRY_H */