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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-02-18 18:28:24 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-02-18 18:28:24 +0000
commit7908ba5b8139c73cc45bacb686199ca48c0d803c (patch)
tree62de3f920a3b3d270db9185f4d8a64b5d7136a8f /c/src/exec/score/cpu/i960/rtems/score/cpu.h
parentAnother part of automake VI patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de> (diff)
downloadrtems-7908ba5b8139c73cc45bacb686199ca48c0d803c.tar.bz2
Part of the automake VI patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de>:
> 4) rtems-rc-19990202-0.diff /reorg-score-cpu.sh > > reorg-score-cpu.sh reorganizes the cpu/<cpu>/* subdirectories in a > similar manner than previous reorg scripts did. rtems-rc-19990202-0.diff > contains the diffs after reorg-score-cpu.sh has been run on a > rtems-19981215 snapshot + my patches up to rtems-rc-19990131-2.diff. > > This patch is rather nasty and may break something. However, I've tested > it for about 10 different target/bsp pairs and believe to have shaken > out most bugs. I wonder about the following .h files that were not moved: a29k/asm.h a29k/cpu_asm.h i386/asm.h i960/asm.h m68k/asm.h m68k/m68302.h m68k/m68360.h m68k/qsm.h m68k/sim.h mips64orion/asm.h mips64orion/cpu_asm.h mips64orion/mips64orion.h no_cpu/asm.h no_cpu/cpu_asm.h powerpc/asm.h powerpc/mpc860.h sh/asm.h sparc/asm.h sparc/erc32.h
Diffstat (limited to 'c/src/exec/score/cpu/i960/rtems/score/cpu.h')
-rw-r--r--c/src/exec/score/cpu/i960/rtems/score/cpu.h468
1 files changed, 468 insertions, 0 deletions
diff --git a/c/src/exec/score/cpu/i960/rtems/score/cpu.h b/c/src/exec/score/cpu/i960/rtems/score/cpu.h
new file mode 100644
index 0000000000..1deb8c08b4
--- /dev/null
+++ b/c/src/exec/score/cpu/i960/rtems/score/cpu.h
@@ -0,0 +1,468 @@
+/* cpu.h
+ *
+ * This include file contains information pertaining to the Intel
+ * i960 processor family.
+ *
+ * COPYRIGHT (c) 1989-1998.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#ifndef __CPU_h
+#define __CPU_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#pragma align 4 /* for GNU C structure alignment */
+
+#include <rtems/score/i960.h> /* pick up machine definitions */
+#ifndef ASM
+#include <rtems/score/i960types.h>
+#endif
+
+#define CPU_INLINE_ENABLE_DISPATCH FALSE
+#define CPU_UNROLL_ENQUEUE_PRIORITY FALSE
+
+/*
+ * Use the i960's hardware interrupt stack support and have the
+ * interrupt manager allocate the memory for it.
+ */
+
+#define CPU_HAS_SOFTWARE_INTERRUPT_STACK FALSE
+#define CPU_HAS_HARDWARE_INTERRUPT_STACK TRUE
+#define CPU_ALLOCATE_INTERRUPT_STACK TRUE
+
+/*
+ * Does the RTEMS invoke the user's ISR with the vector number and
+ * a pointer to the saved interrupt frame (1) or just the vector
+ * number (0)?
+ */
+
+#define CPU_ISR_PASSES_FRAME_POINTER 0
+
+/*
+ * Some family members have no FP (SA/KA/CA/CF), others have it built in
+ * (KB/MC/MX). There does not appear to be an external coprocessor
+ * for this family.
+ */
+
+#if ( I960_HAS_FPU == 1 )
+#define CPU_HARDWARE_FP TRUE
+#error "Floating point support for i960 family has been implemented!!!"
+#else
+#define CPU_HARDWARE_FP FALSE
+#endif
+
+#define CPU_ALL_TASKS_ARE_FP FALSE
+#define CPU_IDLE_TASK_IS_FP FALSE
+#define CPU_USE_DEFERRED_FP_SWITCH TRUE
+
+#define CPU_PROVIDES_IDLE_THREAD_BODY FALSE
+#define CPU_STACK_GROWS_UP TRUE
+#define CPU_STRUCTURE_ALIGNMENT __attribute__ ((aligned (16)))
+
+/*
+ * Define what is required to specify how the network to host conversion
+ * routines are handled.
+ */
+
+#define CPU_CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES FALSE
+#define CPU_BIG_ENDIAN TRUE
+#define CPU_LITTLE_ENDIAN FALSE
+
+
+/* structures */
+
+/*
+ * Basic integer context for the i960 family.
+ */
+
+typedef struct {
+ void *r0_pfp; /* (r0) Previous Frame Pointer */
+ void *r1_sp; /* (r1) Stack Pointer */
+ unsigned32 pc; /* (pc) Processor Control */
+ void *g8; /* (g8) Global Register 8 */
+ void *g9; /* (g9) Global Register 9 */
+ void *g10; /* (g10) Global Register 10 */
+ void *g11; /* (g11) Global Register 11 */
+ void *g12; /* (g12) Global Register 12 */
+ void *g13; /* (g13) Global Register 13 */
+ unsigned32 g14; /* (g14) Global Register 14 */
+ void *g15_fp; /* (g15) Frame Pointer */
+} Context_Control;
+
+/*
+ * FP context save area for the i960 Numeric Extension
+ */
+
+typedef struct {
+ unsigned32 fp0_1; /* (fp0) first word */
+ unsigned32 fp0_2; /* (fp0) second word */
+ unsigned32 fp0_3; /* (fp0) third word */
+ unsigned32 fp1_1; /* (fp1) first word */
+ unsigned32 fp1_2; /* (fp1) second word */
+ unsigned32 fp1_3; /* (fp1) third word */
+ unsigned32 fp2_1; /* (fp2) first word */
+ unsigned32 fp2_2; /* (fp2) second word */
+ unsigned32 fp2_3; /* (fp2) third word */
+ unsigned32 fp3_1; /* (fp3) first word */
+ unsigned32 fp3_2; /* (fp3) second word */
+ unsigned32 fp3_3; /* (fp3) third word */
+} Context_Control_fp;
+
+/*
+ * The following structure defines the set of information saved
+ * on the current stack by RTEMS upon receipt of each interrupt.
+ */
+
+typedef struct {
+ unsigned32 TBD; /* XXX Fix for this CPU */
+} CPU_Interrupt_frame;
+
+/*
+ * Call frame for the i960 family.
+ */
+
+typedef struct {
+ void *r0_pfp; /* (r0) Previous Frame Pointer */
+ void *r1_sp; /* (r1) Stack Pointer */
+ void *r2_rip; /* (r2) Return Instruction Pointer */
+ void *r3; /* (r3) Local Register 3 */
+ void *r4; /* (r4) Local Register 4 */
+ void *r5; /* (r5) Local Register 5 */
+ void *r6; /* (r6) Local Register 6 */
+ void *r7; /* (r7) Local Register 7 */
+ void *r8; /* (r8) Local Register 8 */
+ void *r9; /* (r9) Local Register 9 */
+ void *r10; /* (r10) Local Register 10 */
+ void *r11; /* (r11) Local Register 11 */
+ void *r12; /* (r12) Local Register 12 */
+ void *r13; /* (r13) Local Register 13 */
+ void *r14; /* (r14) Local Register 14 */
+ void *r15; /* (r15) Local Register 15 */
+ /* XXX Looks like sometimes there is FP stuff here (MC manual)? */
+} CPU_Call_frame;
+
+/*
+ * The following table contains the information required to configure
+ * the i960 specific parameters.
+ */
+
+typedef struct {
+ void (*pretasking_hook)( void );
+ void (*predriver_hook)( void );
+ void (*postdriver_hook)( void );
+ void (*idle_task)( void );
+ boolean do_zero_of_workspace;
+ unsigned32 idle_task_stack_size;
+ unsigned32 interrupt_stack_size;
+ unsigned32 extra_mpci_receive_server_stack;
+ void * (*stack_allocate_hook)( unsigned32 );
+ void (*stack_free_hook)( void* );
+ /* end of fields required on all CPUs */
+
+#if defined(__i960CA__) || defined(__i960_CA__) || defined(__i960CA)
+ i960ca_PRCB *Prcb;
+#endif
+} rtems_cpu_table;
+
+/* variables */
+
+SCORE_EXTERN void *_CPU_Interrupt_stack_low;
+SCORE_EXTERN void *_CPU_Interrupt_stack_high;
+
+/* constants */
+
+/*
+ * This defines the number of levels and the mask used to pick those
+ * bits out of a thread mode.
+ */
+
+#define CPU_MODES_INTERRUPT_LEVEL 0x0000001f /* interrupt level in mode */
+#define CPU_MODES_INTERRUPT_MASK 0x0000001f /* interrupt level in mode */
+
+/*
+ * context size area for floating point
+ */
+
+#define CPU_CONTEXT_FP_SIZE sizeof( Context_Control_fp )
+
+/*
+ * extra stack required by the MPCI receive server thread
+ */
+
+#define CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK (CPU_STACK_MINIMUM_SIZE)
+
+/*
+ * i960 family supports 256 distinct vectors.
+ */
+
+#define CPU_INTERRUPT_NUMBER_OF_VECTORS 256
+#define CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER (CPU_INTERRUPT_NUMBER_OF_VECTORS - 1)
+
+/*
+ * Minimum size of a thread's stack.
+ *
+ * NOTE: See CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK
+ */
+
+#define CPU_STACK_MINIMUM_SIZE 2048
+
+/*
+ * i960 is pretty tolerant of alignment. Just put things on 4 byte boundaries.
+ */
+
+#define CPU_ALIGNMENT 4
+#define CPU_HEAP_ALIGNMENT CPU_ALIGNMENT
+#define CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT
+
+/*
+ * i960ca stack requires 16 byte alignment
+ *
+ * NOTE: This factor may need to be family member dependent.
+ */
+
+#define CPU_STACK_ALIGNMENT 16
+
+/* macros */
+
+/*
+ * ISR handler macros
+ *
+ * These macros perform the following functions:
+ * + disable all maskable CPU interrupts
+ * + restore previous interrupt level (enable)
+ * + temporarily restore interrupts (flash)
+ * + set a particular level
+ */
+
+#define _CPU_ISR_Disable( _level ) i960_disable_interrupts( _level )
+#define _CPU_ISR_Enable( _level ) i960_enable_interrupts( _level )
+#define _CPU_ISR_Flash( _level ) i960_flash_interrupts( _level )
+
+#define _CPU_ISR_Set_level( newlevel ) \
+ { \
+ unsigned32 _mask = 0; \
+ unsigned32 _level = (newlevel); \
+ \
+ __asm__ volatile ( "ldconst 0x1f0000,%0; \
+ modpc 0,%0,%1" : "=d" (_mask), "=d" (_level) \
+ : "0" (_mask), "1" (_level) \
+ ); \
+ }
+
+unsigned32 _CPU_ISR_Get_level( void );
+
+/* ISR handler section macros */
+
+/*
+ * Context handler macros
+ *
+ * These macros perform the following functions:
+ * + initialize a context area
+ * + restart the current thread
+ * + calculate the initial pointer into a FP context area
+ * + initialize an FP context area
+ */
+
+#define _CPU_Context_Initialize( _the_context, _stack_base, _size, \
+ _isr, _entry, _is_fp ) \
+ { CPU_Call_frame *_texit_frame; \
+ unsigned32 _mask; \
+ unsigned32 _base_pc; \
+ unsigned32 _stack_tmp; \
+ void *_stack; \
+ \
+ _stack_tmp = (unsigned32)(_stack_base) + CPU_STACK_ALIGNMENT; \
+ _stack_tmp &= ~(CPU_STACK_ALIGNMENT - 1); \
+ _stack = (void *) _stack_tmp; \
+ \
+ __asm__ volatile ( "flushreg" : : ); /* flush register cache */ \
+ \
+ (_the_context)->r0_pfp = _stack; \
+ (_the_context)->g15_fp = _stack + (1 * sizeof(CPU_Call_frame)); \
+ (_the_context)->r1_sp = _stack + (2 * sizeof(CPU_Call_frame)); \
+ __asm__ volatile ( "ldconst 0x1f0000,%0 ; " \
+ "modpc 0,0,%1 ; " \
+ "andnot %0,%1,%1 ; " \
+ : "=d" (_mask), "=d" (_base_pc) : ); \
+ (_the_context)->pc = _base_pc | ((_isr) << 16); \
+ (_the_context)->g14 = 0; \
+ \
+ _texit_frame = (CPU_Call_frame *)_stack; \
+ _texit_frame->r0_pfp = NULL; \
+ _texit_frame->r1_sp = (_the_context)->g15_fp; \
+ _texit_frame->r2_rip = (_entry); \
+ }
+
+#define _CPU_Context_Restart_self( _the_context ) \
+ _CPU_Context_restore( (_the_context) );
+
+#define _CPU_Context_Fp_start( _base, _offset ) NULL
+
+#define _CPU_Context_Initialize_fp( _fp_area )
+
+/* end of Context handler macros */
+
+/*
+ * Fatal Error manager macros
+ *
+ * These macros perform the following functions:
+ * + disable interrupts and halt the CPU
+ */
+
+#define _CPU_Fatal_halt( _errorcode ) \
+ { unsigned32 _mask, _level; \
+ unsigned32 _error = (_errorcode); \
+ \
+ __asm__ volatile ( "ldconst 0x1f0000,%0 ; \
+ mov %0,%1 ; \
+ modpc 0,%0,%1 ; \
+ mov %2,g0 ; \
+ self: b self " \
+ : "=d" (_mask), "=d" (_level), "=d" (_error) : ); \
+ }
+
+/* end of Fatal Error Manager macros */
+
+/*
+ * Bitfield handler macros
+ *
+ * These macros perform the following functions:
+ * + scan for the highest numbered (MSB) set in a 16 bit bitfield
+ */
+
+#define CPU_USE_GENERIC_BITFIELD_CODE FALSE
+#define CPU_USE_GENERIC_BITFIELD_DATA FALSE
+
+#define _CPU_Bitfield_Find_first_bit( _value, _output ) \
+ { unsigned32 _search = (_value); \
+ \
+ (_output) = 0; /* to prevent warnings */ \
+ __asm__ volatile ( "scanbit %0,%1 " \
+ : "=d" (_search), "=d" (_output) \
+ : "0" (_search), "1" (_output) ); \
+ }
+
+/* end of Bitfield handler macros */
+
+/*
+ * Priority handler macros
+ *
+ * These macros perform the following functions:
+ * + return a mask with the bit for this major/minor portion of
+ * of thread priority set.
+ * + translate the bit number returned by "Bitfield_find_first_bit"
+ * into an index into the thread ready chain bit maps
+ */
+
+#define _CPU_Priority_Mask( _bit_number ) \
+ ( 0x8000 >> (_bit_number) )
+
+#define _CPU_Priority_bits_index( _priority ) \
+ ( 15 - (_priority) )
+
+/* end of Priority handler macros */
+
+/* functions */
+
+/*
+ * _CPU_Initialize
+ *
+ * This routine performs CPU dependent initialization.
+ */
+
+void _CPU_Initialize(
+ rtems_cpu_table *cpu_table,
+ void (*thread_dispatch)
+);
+
+/*
+ * _CPU_ISR_install_raw_handler
+ *
+ * This routine installs a "raw" interrupt handler directly into the
+ * processor's vector table.
+ */
+
+void _CPU_ISR_install_raw_handler(
+ unsigned32 vector,
+ proc_ptr new_handler,
+ proc_ptr *old_handler
+);
+
+/*
+ * _CPU_ISR_install_vector
+ *
+ * This routine installs an interrupt vector.
+ */
+
+void _CPU_ISR_install_vector(
+ unsigned32 vector,
+ proc_ptr new_handler,
+ proc_ptr *old_handler
+);
+
+/*
+ * _CPU_Install_interrupt_stack
+ *
+ * This routine installs the hardware interrupt stack pointer.
+ */
+
+void _CPU_Install_interrupt_stack( void );
+
+/*
+ * _CPU_Context_switch
+ *
+ * This routine switches from the run context to the heir context.
+ */
+
+void _CPU_Context_switch(
+ Context_Control *run,
+ Context_Control *heir
+);
+
+/*
+ * _CPU_Context_restore
+ *
+ * This routine is generally used only to restart self in an
+ * efficient manner and avoid stack conflicts.
+ */
+
+void _CPU_Context_restore(
+ Context_Control *new_context
+);
+
+/*
+ * _CPU_Context_save_fp
+ *
+ * This routine saves the floating point context passed to it.
+ */
+
+void _CPU_Context_save_fp(
+ void **fp_context_ptr
+);
+
+/*
+ * _CPU_Context_restore_fp
+ *
+ * This routine restores the floating point context passed to it.
+ */
+
+void _CPU_Context_restore_fp(
+ void **fp_context_ptr
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */