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* rtems/powerpc/registers.h: Added defines DEAR_BOOKE and DEAR_405.

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* rtems/score/cpu.h: Changed fpscr field to an integer type in
        Context_Control_fp.  Fixed warnings in PPC_Set_timebase_register().
        Changed _CPU_Context_Initialize_fp() to initialize all fields and
        avoid floating-point instructions.
        * rtems/score/powerpc.h: Removed PPC_INIT_FPSCR define.
This commit is contained in:
Thomas Doerfler
2009-10-21 13:19:09 +00:00
parent e7cac30a80
commit 2067679bb3
4 changed files with 21 additions and 16 deletions
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9
cpukit/score/cpu/powerpc/ChangeLog
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@@ -1,3 +1,12 @@
2009-10-21 Sebastian Huber <sebastian.huber@embedded-brains.de>
* rtems/powerpc/registers.h: Added defines DEAR_BOOKE and DEAR_405.
* rtems/score/cpu.h: Changed fpscr field to an integer type in
Context_Control_fp. Fixed warnings in PPC_Set_timebase_register().
Changed _CPU_Context_Initialize_fp() to initialize all fields and
avoid floating-point instructions.
* rtems/score/powerpc.h: Removed PPC_INIT_FPSCR define.
2009-02-27 Sebastian Huber <sebastian.huber@embedded-brains.de> 2009-02-27 Sebastian Huber <sebastian.huber@embedded-brains.de>
* rtems/powerpc/registers.h: Added Freescale Book E Implementation * rtems/powerpc/registers.h: Added Freescale Book E Implementation

2
cpukit/score/cpu/powerpc/rtems/powerpc/registers.h
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@@ -169,6 +169,8 @@ n:
#define RPA 982 #define RPA 982
#define SDR1 25 /* MMU hash base register */ #define SDR1 25 /* MMU hash base register */
#define DAR 19 /* Data Address Register */ #define DAR 19 /* Data Address Register */
#define DEAR_BOOKE 61
#define DEAR_405 981
#define SPR0 272 /* Supervisor Private Registers */ #define SPR0 272 /* Supervisor Private Registers */
#define SPRG0 272 #define SPRG0 272
#define SPR1 273 #define SPR1 273

18
cpukit/score/cpu/powerpc/rtems/score/cpu.h
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@@ -17,7 +17,9 @@
#define _RTEMS_SCORE_CPU_H #define _RTEMS_SCORE_CPU_H
#include <rtems/score/powerpc.h> /* pick up machine definitions */ #include <rtems/score/powerpc.h> /* pick up machine definitions */
#ifndef ASM #ifndef ASM
#include <string.h> /* for memset() */
#include <rtems/score/types.h> #include <rtems/score/types.h>
#endif #endif
@@ -224,6 +226,7 @@
*/ */
#ifndef ASM #ifndef ASM
typedef struct { typedef struct {
uint32_t gpr1; /* Stack pointer for all */ uint32_t gpr1; /* Stack pointer for all */
uint32_t gpr2; /* Reserved SVR4, section ptr EABI + */ uint32_t gpr2; /* Reserved SVR4, section ptr EABI + */
@@ -263,15 +266,13 @@ typedef struct {
*/ */
#if (PPC_HAS_DOUBLE == 1) #if (PPC_HAS_DOUBLE == 1)
double f[32]; double f[32];
double fpscr; uint64_t fpscr;
#else #else
float f[32]; float f[32];
float fpscr; uint32_t fpscr;
#endif #endif
} Context_Control_fp; } Context_Control_fp;
#endif /* ASM */
#ifndef ASM
typedef struct CPU_Interrupt_frame { typedef struct CPU_Interrupt_frame {
uint32_t stacklink; /* Ensure this is a real frame (also reg1 save) */ uint32_t stacklink; /* Ensure this is a real frame (also reg1 save) */
uint32_t calleeLr; /* link register used by callees: SVR4/EABI */ uint32_t calleeLr; /* link register used by callees: SVR4/EABI */
@@ -302,6 +303,7 @@ typedef struct CPU_Interrupt_frame {
uint32_t msr; uint32_t msr;
uint32_t pad[3]; uint32_t pad[3];
} CPU_Interrupt_frame; } CPU_Interrupt_frame;
#endif /* ASM */ #endif /* ASM */
#include <rtems/new-exceptions/cpu.h> #include <rtems/new-exceptions/cpu.h>
@@ -499,8 +501,8 @@ static inline void PPC_Set_timebase_register (uint64_t tbr)
uint32_t tbr_low; uint32_t tbr_low;
uint32_t tbr_high; uint32_t tbr_high;
tbr_low = (tbr & 0xffffffff) ; tbr_low = (uint32_t) tbr;
tbr_high = (tbr >> 32) & 0xffffffff; tbr_high = (uint32_t) (tbr >> 32);
asm volatile( "mtspr 284, %0" : : "r" (tbr_low)); asm volatile( "mtspr 284, %0" : : "r" (tbr_low));
asm volatile( "mtspr 285, %0" : : "r" (tbr_high)); asm volatile( "mtspr 285, %0" : : "r" (tbr_high));
@@ -578,9 +580,7 @@ void _CPU_Context_Initialize(
*/ */
#define _CPU_Context_Initialize_fp( _destination ) \ #define _CPU_Context_Initialize_fp( _destination ) \
{ \ memset( *(_destination), 0, sizeof( **(_destination) ) )
(*(_destination))->fpscr = PPC_INIT_FPSCR; \
}
/* end of Context handler macros */ /* end of Context handler macros */
#endif /* ASM */ #endif /* ASM */

6
cpukit/score/cpu/powerpc/rtems/score/powerpc.h
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@@ -141,12 +141,6 @@ extern "C" {
#define PPC_HAS_DOUBLE 0 #define PPC_HAS_DOUBLE 0
#endif #endif
/*
* Initial value for the FPSCR register
*/
#define PPC_INIT_FPSCR 0x000000f8
/* /*
* Assemblers. * Assemblers.
* PPC_ASM MUST be defined as one of these. * PPC_ASM MUST be defined as one of these.