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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-10-03 11:52:33 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2008-10-03 11:52:33 +0100 |
| commit | 56f68556d7bbb51dd158c74deb09c783345bfbbd (patch) | |
| tree | 536e6e3c7063b1eee927194dda257602bd3dc66f /arch/blackfin/include/asm/entry.h | |
| parent | Merge branch 'omap2-clock' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git (diff) | |
| parent | [ARM] omap: fix a load of "warning: symbol 'xxx' was not declared. Should it be static?" (diff) | |
| download | linux-dev-56f68556d7bbb51dd158c74deb09c783345bfbbd.tar.xz linux-dev-56f68556d7bbb51dd158c74deb09c783345bfbbd.zip | |
Merge unstable branch 'omap-rmk'
Merge branch 'omap-rmk' into omap-all
Diffstat (limited to 'arch/blackfin/include/asm/entry.h')
| -rw-r--r-- | arch/blackfin/include/asm/entry.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/entry.h b/arch/blackfin/include/asm/entry.h new file mode 100644 index 000000000000..c4f721e0d00d --- /dev/null +++ b/arch/blackfin/include/asm/entry.h @@ -0,0 +1,61 @@ +#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. */ +#define INTERRUPT_ENTRY(N) \ + [--sp] = SYSCFG; \ + \ + [--sp] = P0; /*orig_p0*/ \ + [--sp] = R0; /*orig_r0*/ \ + [--sp] = (R7:0,P5:0); \ + R0 = (N); \ + 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 RESTORE_ALL_SYS restore_context_no_interrupts +#define RESTORE_CONTEXT restore_context_with_interrupts + +#endif /* __ASSEMBLY__ */ +#endif /* __BFIN_ENTRY_H */ |