[PATCH] powerpc: export validate_sp for oprofile calltrace

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-powerpc / processor.h

diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index 1dc4bf7b52b302533b2909ff688d883816cf1b9a..57643b5b782ff50a547338298a83dff61f970875 100644 (file)
--- a/include/asm-powerpc/processor.h
+++ b/include/asm-powerpc/processor.h
@@ -10,41 +10,50 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#include <linux/config.h>
 #include <asm/reg.h>
 
 #ifndef __ASSEMBLY__
 #include <linux/compiler.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>
-#ifdef CONFIG_PPC64
-#include <asm/systemcfg.h>
-#endif
 
-#ifdef CONFIG_PPC32
-/* 32-bit platform types */
-/* We only need to define a new _MACH_xxx for machines which are part of
- * a configuration which supports more than one type of different machine.
- * This is currently limited to CONFIG_PPC_MULTIPLATFORM and CHRP/PReP/PMac.
- * -- Tom
+/* We do _not_ want to define new machine types at all, those must die
+ * in favor of using the device-tree
+ * -- BenH.
  */
-#define _MACH_prep     0x00000001
-#define _MACH_Pmac     0x00000002      /* pmac or pmac clone (non-chrp) */
-#define _MACH_chrp     0x00000004      /* chrp machine */
 
-/* see residual.h for these */
+/* Platforms codes (to be obsoleted) */
+#define PLATFORM_PSERIES       0x0100
+#define PLATFORM_PSERIES_LPAR  0x0101
+#define PLATFORM_ISERIES_LPAR  0x0201
+#define PLATFORM_LPAR          0x0001
+#define PLATFORM_POWERMAC      0x0400
+#define PLATFORM_MAPLE         0x0500
+#define PLATFORM_PREP          0x0600
+#define PLATFORM_CHRP          0x0700
+#define PLATFORM_CELL          0x1000
+
+/* Compat platform codes for 32 bits */
+#define _MACH_prep     PLATFORM_PREP
+#define _MACH_Pmac     PLATFORM_POWERMAC
+#define _MACH_chrp     PLATFORM_CHRP
+
+/* PREP sub-platform types see residual.h for these */
 #define _PREP_Motorola 0x01    /* motorola prep */
 #define _PREP_Firm     0x02    /* firmworks prep */
 #define _PREP_IBM      0x00    /* ibm prep */
 #define _PREP_Bull     0x03    /* bull prep */
 
-/* these are arbitrary */
+/* CHRP sub-platform types. These are arbitrary */
 #define _CHRP_Motorola 0x04    /* motorola chrp, the cobra */
 #define _CHRP_IBM      0x05    /* IBM chrp, the longtrail and longtrail 2 */
 #define _CHRP_Pegasos  0x06    /* Genesi/bplan's Pegasos and Pegasos2 */
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
-extern int _machine;
+#ifdef __KERNEL__
+#define platform_is_pseries()  (_machine == PLATFORM_PSERIES || \
+                                _machine == PLATFORM_PSERIES_LPAR)
+
+#ifdef CONFIG_PPC_PREP
 
 /* what kind of prep workstation we are */
 extern int _prep_type;
@@ -52,31 +61,26 @@ extern int _chrp_type;
 
 /*
  * This is used to identify the board type from a given PReP board
- * vendor. Board revision is also made available.
+ * vendor. Board revision is also made available. This will be moved
+ * elsewhere soon
  */
-extern unsigned char ucSystemType;
 extern unsigned char ucBoardRev;
 extern unsigned char ucBoardRevMaj, ucBoardRevMin;
+
+#endif /* CONFIG_PPC_PREP */
+
+#if defined(CONFIG_PPC_MULTIPLATFORM)
+extern int _machine;
+
+#elif defined(CONFIG_PPC_ISERIES)
+/*
+ * iSeries is soon to become MULTIPLATFORM hopefully ...
+ */
+#define _machine PLATFORM_ISERIES_LPAR
 #else
 #define _machine 0
 #endif /* CONFIG_PPC_MULTIPLATFORM */
-#endif /* CONFIG_PPC32 */
-
-#ifdef CONFIG_PPC64
-/* Platforms supported by PPC64 */
-#define PLATFORM_PSERIES      0x0100
-#define PLATFORM_PSERIES_LPAR 0x0101
-#define PLATFORM_ISERIES_LPAR 0x0201
-#define PLATFORM_LPAR         0x0001
-#define PLATFORM_POWERMAC     0x0400
-#define PLATFORM_MAPLE        0x0500
-#define PLATFORM_CELL         0x1000
-
-/* Compatibility with drivers coming from PPC32 world */
-#define _machine       (systemcfg->platform)
-#define _MACH_Pmac     PLATFORM_POWERMAC
-#endif
-
+#endif /* __KERNEL__ */
 /*
  * Default implementation of macro that returns current
  * instruction pointer ("program counter").
@@ -171,8 +175,8 @@ struct thread_struct {
 #ifdef CONFIG_PPC64
        unsigned long   start_tb;       /* Start purr when proc switched in */
        unsigned long   accum_tb;       /* Total accumilated purr for process */
-       unsigned long   vdso_base;      /* base of the vDSO library */
 #endif
+       unsigned long   vdso_base;      /* base of the vDSO library */
        unsigned long   dabr;           /* Data address breakpoint register */
 #ifdef CONFIG_ALTIVEC
        /* Complete AltiVec register set */
@@ -247,6 +251,10 @@ static inline unsigned long __pack_fe01(unsigned int fpmode)
 #define cpu_relax()    barrier()
 #endif
 
+/* Check that a certain kernel stack pointer is valid in task_struct p */
+int validate_sp(unsigned long sp, struct task_struct *p,
+                       unsigned long nbytes);
+
 /*
  * Prefetch macros.
  */