diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1994-12-01 08:00:00 +0000 |
|---|---|---|
| committer | <ralf@linux-mips.org> | 1994-12-01 08:00:00 +0000 |
| commit | 90ecc248e200fee448001248dde0ca540dd3ef64 (patch) | |
| tree | a3fe89494ce63b4835f0f9cf5c45e74cde88252b /include/asm-mips/system.h | |
| parent | 1513ff9b7899ab588401c89db0e99903dbf5f886 (diff) | |
Import of Linux/MIPS 1.1.68
Diffstat (limited to 'include/asm-mips/system.h')
| -rw-r--r-- | include/asm-mips/system.h | 83 |
1 files changed, 51 insertions, 32 deletions
diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h index 5e0dbfe3c..3a3029b31 100644 --- a/include/asm-mips/system.h +++ b/include/asm-mips/system.h @@ -11,8 +11,9 @@ #ifndef _ASM_MIPS_SYSTEM_H_ #define _ASM_MIPS_SYSTEM_H_ +#include <linux/types.h> #include <asm/segment.h> -#include <mips/mipsregs.h> +#include <asm/mipsregs.h> /* * move_to_user_mode() doesn't switch to user mode on the mips, since @@ -25,46 +26,64 @@ #define move_to_user_mode() #define sti() \ -__asm__ __volatile__( \ +__asm__ __volatile__( \ + ".set\tnoat\n\t" \ "mfc0\t$1,"STR(CP0_STATUS)"\n\t" \ - "ori\t$1,$1,1\n\t" \ + "ori\t$1,$1,0x1f\n\t" \ + "xori\t$1,$1,0x1e\n\t" \ "mtc0\t$1,"STR(CP0_STATUS)"\n\t" \ - : /* no outputs */ \ - : /* no inputs */ \ - : "$1","memory") + ".set\tat" \ + : /* no outputs */ \ + : /* no inputs */ \ + : "$1") #define cli() \ -__asm__ __volatile__( \ +__asm__ __volatile__( \ + ".set\tnoat\n\t" \ "mfc0\t$1,"STR(CP0_STATUS)"\n\t" \ - "srl\t$1,$1,1\n\t" \ - "sll\t$1,$1,1\n\t" \ + "ori\t$1,$1,1\n\t" \ + "xori\t$1,$1,1\n\t" \ "mtc0\t$1,"STR(CP0_STATUS)"\n\t" \ - : /* no outputs */ \ - : /* no inputs */ \ - : "$1","memory") + ".set\tat" \ + : /* no outputs */ \ + : /* no inputs */ \ + : "$1") #define nop() __asm__ __volatile__ ("nop") -#define save_flags(x) \ -__asm__ __volatile__( \ - ".set\tnoreorder\n\t" \ - ".set\tnoat\n\t" \ - "mfc0\t%0,$12\n\t" \ - ".set\tat\n\t" \ - ".set\treorder" \ - : "=r" (x) \ - : /* no inputs */ \ - : "memory") +extern ulong IRQ_vectors[256]; +extern ulong exception_handlers[256]; -#define restore_flags(x) \ -__asm__ __volatile__( \ - ".set\tnoreorder\n\t" \ - ".set\tnoat\n\t" \ - "mtc0\t%0,$12\n\t" \ - ".set\tat\n\t" \ - ".set\treorder" \ - : /* no output */ \ - : "r" (x) \ - : "memory") +#define set_intr_gate(n,addr) \ + IRQ_vectors[n] = (ulong) (addr) + +#define set_except_vector(n,addr) \ + exception_handlers[n] = (ulong) (addr) + +/* + * atomic exchange of one word + * + * Fixme: This works only on MIPS ISA >=3 + */ +#define atomic_exchange(m,r) \ + __asm__ __volatile__( \ + "1:\tll\t$8,(%2)\n\t" \ + "move\t$9,%0\n\t" \ + "sc\t$9,(%2)\n\t" \ + "beq\t$0,$9,1b\n\t" \ + : "=r" (r) \ + : "0" (r), "r" (&(m)) \ + : "$8","$9","memory"); + +#define save_flags(x) \ +__asm__ __volatile__( \ + "mfc0\t%0,$12\n\t" \ + : "=r" (x)) \ + +#define restore_flags(x) \ +__asm__ __volatile__( \ + "mtc0\t%0,$12\n\t" \ + : /* no output */ \ + : "r" (x)); \ #endif /* _ASM_MIPS_SYSTEM_H_ */ |