diff options
author | Ralf Corsepius <ralf.corsepius@rtems.org> | 2005-04-23 04:56:01 +0000 |
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committer | Ralf Corsepius <ralf.corsepius@rtems.org> | 2005-04-23 04:56:01 +0000 |
commit | 6a88b80664a6f237b88d43dc2ee51852a3e07f6f (patch) | |
tree | 894316f723cfe1549aee7a5c5fe3dd78d7e40110 /cpukit | |
parent | 2005-04-23 Ralf Corsepius <ralf.corsepius@rtems.org> (diff) | |
download | rtems-6a88b80664a6f237b88d43dc2ee51852a3e07f6f.tar.bz2 |
Remove (Obsolete).
Diffstat (limited to 'cpukit')
-rw-r--r-- | cpukit/score/cpu/or32/.cvsignore | 2 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/ChangeLog | 304 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/Makefile.am | 25 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/cpu.c | 192 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/cpu_asm.c | 578 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/preinstall.am | 43 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/rtems/asm.h | 100 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/rtems/score/cpu.h | 1070 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/rtems/score/cpu_asm.h | 72 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/rtems/score/or32.h | 72 | ||||
-rw-r--r-- | cpukit/score/cpu/or32/rtems/score/types.h | 67 |
11 files changed, 0 insertions, 2525 deletions
diff --git a/cpukit/score/cpu/or32/.cvsignore b/cpukit/score/cpu/or32/.cvsignore deleted file mode 100644 index 282522db03..0000000000 --- a/cpukit/score/cpu/or32/.cvsignore +++ /dev/null @@ -1,2 +0,0 @@ -Makefile -Makefile.in diff --git a/cpukit/score/cpu/or32/ChangeLog b/cpukit/score/cpu/or32/ChangeLog deleted file mode 100644 index 66d4dec902..0000000000 --- a/cpukit/score/cpu/or32/ChangeLog +++ /dev/null @@ -1,304 +0,0 @@ -2005-04-23 Ralf Corsepius <ralf.corsepius@rtems.org> - - * rtems/score/types.h, rtems/score/cpu.h, - rtems/score/cpu_asm.h, rtems/score/or32.h, - rtems/asm.h, Makefile.am, cpu.c, cpu_asm.c, - preinstall.am: Remove. - -2005-02-08 Ralf Corsepius <ralf.corsepius@rtems.org> - - * Makefile.am: Split out preinstallation rules. - * preinstall.am: New (Split out from Makefile.am). - -2005-02-04 Ralf Corsepius <ralf.corsepius@rtems.org> - - PR 754/rtems - * rtems/asm.h: New (relocated from .). - * asm.h: Remove (moved to rtems/asm.h). - * Makefile.am: Reflect changes above. - -2004-01-28 Ralf Corsepius <ralf.corsepiu@rtems.org> - - * asm.h, rtems/score/cpu.h, rtems/score/cpu_asm.h, - rtems/score/or32.h, rtems/score/types.h: New header guards. - -2005-01-24 Ralf Corsepius <ralf.corsepius@rtems.org> - - * rtems/score/types.h: Remove signed8, signed16, signed32, - unsigned8, unsigned16, unsigned32. - -2005-01-24 Ralf Corsepius <ralf.corsepius@rtems.org> - - * rtems/score/cpu.h: *_swap_u32( uint32_t ). - -2005-01-24 Ralf Corsepius <ralf.corsepius@rtems.org> - - * rtems/score/types.h: #include <rtems/stdint.h>. - -2005-01-07 Ralf Corsepius <ralf.corsepius@rtems.org> - - * Makefile.am: Eliminate CFLAGS_OPTIMIZE_V. - -2005-01-01 Ralf Corsepius <ralf.corsepius@rtems.org> - - * Makefile.am: Remove build-variant support. - -2004-11-21 Ralf Corsepius <ralf.corsepius@rtems.org> - - * rtems/score/types.h: Use __rtems_score_types_h as preprocessor - guard. - -2004-11-21 Ralf Corsepius <ralf.corsepius@rtems.org> - - * asm.h: Add doxygen preamble. - -2004-10-02 Ralf Corsepius <ralf_corsepius@rtems.org> - - * rtems/score/cpu.h: Add doxygen preamble. - * rtems/score/cpu_asm.h: Add doxygen preamble. - * rtems/score/or32.h: Add doxygen preamble. - * rtems/score/types.h: Add doxygen preamble. - -2004-09-29 Joel Sherrill <joel@OARcorp.com> - - * rtems/score/cpu.h: i960 obsoleted and all references removed. - -2004-04-06 Ralf Corsepius <ralf_corsepius@rtems.org> - - * configure.ac: Remove (Merged into$(top_srcdir)/configure.ac). - * Makefile.am: Don't include multilib.am. - Reflect merging configure.ac into $(top_srcdir)/configure.ac. - -2004-04-01 Ralf Corsepius <ralf_corsepius@rtems.org> - - * Makefile.am: Install asm.h to $(includedir)/rtems. - -2004-03-30 Ralf Corsepius <ralf_corsepius@rtems.org> - - * cpu.c, cpu_asm.c, rtems/score/cpu.h: Convert to using c99 fixed - size types. - -2004-03-29 Ralf Corsepius <ralf_corsepius@rtems.org> - - * configure.ac: RTEMS_TOP([../../../..]). - -2004-01-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Move RTEMS_TOP one subdir down. - -2004-01-19 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Add PREINSTALL_DIRS. - -2004-01-14 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Re-add dirstamps to PREINSTALL_FILES. - Add PREINSTALL_FILES to CLEANFILES. - -2004-01-12 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Requires automake >= 1.8.1. - -2004-01-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Include compile.am, again. - -2004-01-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Convert to using automake compilation rules. - -2003-12-12 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Use mkdir_p. Remove dirs from PREINSTALL_FILES. - -2003-12-12 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Require automake >= 1.8, autoconf >= 2.59. - -2003-12-01 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Remove TMPINSTALL_FILES. - -2003-11-30 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Add $(dirstamp) to preinstallation rules. - -2003-11-23 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Don't use gmake rules for preinstallation. - -2003-10-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Remove RTEMS_CANONICAL_HOST. - -2003-10-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Remove RTEMS_CHECK_CPU. - -2003-09-26 Joel Sherrill <joel@OARcorp.com> - - * rtems/score/cpu.h: Obsoleting HP PA-RISC port and removing all - references. - -2003-09-04 Joel Sherrill <joel@OARcorp.com> - - * cpu.c, cpu_asm.c, rtems/score/cpu.h, rtems/score/cpu_asm.h, - rtems/score/or32.h, rtems/score/types.h: URL for license changed. - -2003-08-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Use rtems-bugs@rtems.com as bug report email address. - -2003-03-06 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Remove AC_CONFIG_AUX_DIR. - -2002-12-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Require autoconf-2.57 + automake-1.7.2. - * Makefile.am: Eliminate C_O_FILES, S_O_FILES, libscorecpu_a_OBJECTS. - -2002-11-19 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Fix package name. - -2002-10-25 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Add nostdinc to AM_INIT_AUTOMAKE. - -2002-10-21 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * .cvsignore: Reformat. - Add autom4te*cache. - Remove autom4te.cache. - -2002-09-14 Ivan Guzvinec <ivang@opencores.org> - - * rtems/score/cpu.h (_CPU_Initialize_vectors) Define to NULL - since it is not used. - -2002-08-06 Joel Sherrill <joel@OARcorp.com> - - * asm.h, rtems/score/cpu.h: Correct items that have changed since - RTEMS version or32 port was based upon. - -2002-08-05 Chris Ziomkowski <chris@asics.ws> - - * asm.h, cpu.c, cpu_asm.c, rtems/score/cpu.h, rtems/score/or32.h, - rtems/score/types.h: Merged from OpenCores CVS repository. - -2002-07-26 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Build libscorecpu.a instead of rtems-cpu.rel. - -2002-07-22 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Use .$(OBJEXT) instead of .o. - -2002-07-05 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: RTEMS_TOP(../../../..). - -2002-07-03 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * rtems.c: Remove. - * Makefile.am: Reflect changes above. - -2002-07-01 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Remove RTEMS_PROJECT_ROOT. - -2002-06-27 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Add RTEMS_PROG_CCAS - -2002-06-27 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: Use AC_CONFIG_AUX_DIR(../../../..). - Add AC_PROG_RANLIB. - -2002-06-17 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Include $(top_srcdir)/../../../automake/*.am. - Use ../../../aclocal. - -2001-04-03 Joel Sherrill <joel@OARcorp.com> - - * Per PR94, all rtems/score/CPUtypes.h are named rtems/score/types.h. - * rtems/score/or32types.h: Removed. - * rtems/score/types.h: New file via CVS magic. - * Makefile.am, rtems/score/cpu.h: Account for name change. - -2002-03-27 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * configure.ac: - AC_INIT(package,_RTEMS_VERSION,_RTEMS_BUGS). - AM_INIT_AUTOMAKE([no-define foreign 1.6]). - * Makefile.am: Remove AUTOMAKE_OPTIONS. - -2001-02-27 Joel Sherrill <joel@OARcorp.com> - - * rtems/score/cpu.h: Fix conditional to match current GCC. - -2001-02-05 Joel Sherrill <joel@OARcorp.com> - - * rtems/Makefile.am, rtems/score/Makefile.am: Removed again. - -2002-01-28 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * rtems/Makefile.am: Removed. - * rtems/score/Makefile.am: Removed. - * configure.ac: Reflect changes above. - * Makefile.am: Reflect changes above. - -2001-12-19 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Add multilib support. - -2001-11-28 Joel Sherrill <joel@OARcorp.com>, - - This was tracked as PR91. - * rtems/score/cpu.h: Added CPU_PROVIDES_ISR_IS_IN_PROGRESS macro which - is used to specify if the port uses the standard macro for this (FALSE). - A TRUE setting indicates the port provides its own implementation. - -2001-10-11 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * .cvsignore: Add autom4te.cache for autoconf > 2.52. - * configure.in: Remove. - * configure.ac: New file, generated from configure.in by autoupdate. - -2001-09-23 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * rtems/score/Makefile.am: Use 'PREINSTALL_FILES ='. - * Makefile.am: Use 'PREINSTALL_FILES ='. - -2001-02-04 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am, rtems/score/Makefile.am: - Apply include_*HEADERS instead of H_FILES. - -2001-01-03 Joel Sherrill <joel@OARcorp.com> - - * rtems/score/cpu.h: Added _CPU_Initialize_vectors(). - -2000-11-09 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Use ... instead of RTEMS_TOPdir in ACLOCAL_AMFLAGS. - -2000-11-02 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Switch to ACLOCAL_AMFLAGS = -I $(RTEMS_TOPdir)/aclocal. - -2000-10-25 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: ACLOCAL_AMFLAGS= -I $(RTEMS_TOPdir)/macros. - Switch to GNU canonicalization. - -2000-09-04 Ralf Corsepius <corsepiu@faw.uni-ulm.de> - - * Makefile.am: Include compile.am. - -2000-08-11 Joel Sherrill <joel@OARcorp.com> - - * Shell added for or32 port based on no_cpu port with names replaced. diff --git a/cpukit/score/cpu/or32/Makefile.am b/cpukit/score/cpu/or32/Makefile.am deleted file mode 100644 index d34e361a14..0000000000 --- a/cpukit/score/cpu/or32/Makefile.am +++ /dev/null @@ -1,25 +0,0 @@ -## -## $Id$ -## - -include $(top_srcdir)/automake/compile.am - -CLEANFILES = -DISTCLEANFILES = - -include_rtemsdir = $(includedir)/rtems -include_rtems_HEADERS= rtems/asm.h - -include_rtems_scoredir = $(includedir)/rtems/score -include_rtems_score_HEADERS = rtems/score/cpu.h rtems/score/types.h \ - rtems/score/or32.h rtems/score/cpu_asm.h - -noinst_LIBRARIES = libscorecpu.a -libscorecpu_a_SOURCES = cpu.c cpu_asm.c -libscorecpu_a_CPPFLAGS = $(AM_CPPFLAGS) - -all-local: $(PREINSTALL_FILES) - -include $(srcdir)/preinstall.am - -include $(top_srcdir)/automake/local.am diff --git a/cpukit/score/cpu/or32/cpu.c b/cpukit/score/cpu/or32/cpu.c deleted file mode 100644 index 06393d4717..0000000000 --- a/cpukit/score/cpu/or32/cpu.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Opencore Or1k CPU Dependent Source - * - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * This file adapted from no_bsp board library of the RTEMS distribution. - * The body has been modified for the Bender Or1k implementation by - * Chris Ziomkowski. <chris@asics.ws> - */ - -#include <rtems/system.h> -#include <rtems/score/isr.h> -#include <rtems/score/wkspace.h> - -/* _CPU_Initialize - * - * This routine performs processor dependent initialization. - * - * INPUT PARAMETERS: - * cpu_table - CPU table to initialize - * thread_dispatch - address of disptaching routine - * - */ - - -void _CPU_Initialize( - rtems_cpu_table *cpu_table, - void (*thread_dispatch) -) -{ - /* - * The thread_dispatch argument is the address of the entry point - * for the routine called at the end of an ISR once it has been - * decided a context switch is necessary. On some compilation - * systems it is difficult to call a high-level language routine - * from assembly. This allows us to trick these systems. - * - * If you encounter this problem save the entry point in a CPU - * dependent variable. - */ - - _CPU_Thread_dispatch_pointer = thread_dispatch; - - /* - * If there is not an easy way to initialize the FP context - * during Context_Initialize, then it is usually easier to - * save an "uninitialized" FP context here and copy it to - * the task's during Context_Initialize. - */ - - /* FP context initialization support goes here */ - - _CPU_Table = *cpu_table; -} - -/*PAGE - * - * _CPU_ISR_Get_level - * - * or1k Specific Information: - * - * There are only 2 interrupt levels for the or1k architecture. - * Either interrupts are enabled or disabled. They are considered - * enabled if both exceptions are enabled (SR_EXR) and interrupts - * are enabled (SR_EIR). If either of these conditions are not - * met, interrupts are disabled, and a level of 1 is returned. - */ - -inline uint32_t _CPU_ISR_Get_level( void ) -{ - register uint32_t sr; - asm("l.mfspr %0,r0,0x17" : "=r" (sr)); - return !((sr & SR_EXR) && (sr & SR_EIR)); -} - -/*PAGE - * - * _CPU_ISR_install_raw_handler - * - * or1k Specific Information: - * - * As a general rule the following is done for interrupts: - * - * For normal exceptions, exceptions are immediately reenabled - * by setting the SR_EXR bit. For interrupt exceptions, the - * SR_EIR bit is first cleared, and then exceptions are reenabled. - */ - -void _CPU_ISR_install_raw_handler( - uint32_t vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ - register uint32_t sr; - register uint32_t tmp; - extern uint32_t Or1k_Interrupt_Vectors[]; - - asm volatile ("l.mfspr %0,r0,0x11\n\t" - "l.addi %1,r0,-5\n\t" - "l.and %1,%1,%0\n\t": "=r" (sr) : "r" (tmp)); - *old_handler = *((proc_ptr*)&Or1k_Interrupt_Vectors[vector]); - *((proc_ptr*)&Or1k_Interrupt_Vectors[vector]) = new_handler; - asm volatile ("l.mtspr r0,%0,0x11\n\t":: "r" (sr)); -} - -/*PAGE - * - * _CPU_ISR_install_vector - * - * This kernel routine installs the RTEMS handler for the - * specified vector. - * - * Input parameters: - * vector - interrupt vector number - * old_handler - former ISR for this vector number - * new_handler - replacement ISR for this vector number - * - * Output parameters: NONE - * - * - * NO_CPU Specific Information: - * - * XXX document implementation including references if appropriate - */ - -void _CPU_ISR_install_vector( - uint32_t vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ - *old_handler = _ISR_Vector_table[ vector ]; - - /* - * If the interrupt vector table is a table of pointer to isr entry - * points, then we need to install the appropriate RTEMS interrupt - * handler for this vector number. - */ - - _CPU_ISR_install_raw_handler( vector, new_handler, old_handler ); - - /* - * We put the actual user ISR address in '_ISR_vector_table'. This will - * be used by the _ISR_Handler so the user gets control. - */ - - _ISR_Vector_table[ vector ] = new_handler; -} - -/*PAGE - * - * _CPU_Install_interrupt_stack - * - * We don't use a separate interrupt stack. - * - */ - -void _CPU_Install_interrupt_stack( void ) -{ -} - -/*PAGE - * - * _CPU_Thread_Idle_body - * - * NOTES: - * - * 1. This is the same as the regular CPU independent algorithm. - * - * 2. If you implement this using a "halt", "idle", or "shutdown" - * instruction, then don't forget to put it in an infinite loop. - * - * 3. Be warned. Some processors with onboard DMA have been known - * to stop the DMA if the CPU were put in IDLE mode. This might - * also be a problem with other on-chip peripherals. So use this - * hook with caution. - * - */ - -void _CPU_Thread_Idle_body( void ) -{ - - for( ; ; ) - /* insert your "halt" instruction here */ ; -} diff --git a/cpukit/score/cpu/or32/cpu_asm.c b/cpukit/score/cpu/or32/cpu_asm.c deleted file mode 100644 index 5580ba3115..0000000000 --- a/cpukit/score/cpu/or32/cpu_asm.c +++ /dev/null @@ -1,578 +0,0 @@ -/* cpu_asm.c ===> cpu_asm.S or cpu_asm.s - * - * This file contains the basic algorithms for all assembly code used - * in an specific CPU port of RTEMS. These algorithms must be implemented - * in assembly language - * - * NOTE: This is supposed to be a .S or .s file NOT a C file. - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * This file adapted from no_bsp board library of the RTEMS distribution. - * The body has been modified for the Bender Or1k implementation by - * Chris Ziomkowski. <chris@asics.ws> - */ - -/* - * This is supposed to be an assembly file. This means that system.h - * and cpu.h should not be included in a "real" cpu_asm file. An - * implementation in assembly should include "cpu_asm.h> - */ - -#include <rtems/system.h> -#include <rtems/score/cpu.h> -/* #include "cpu_asm.h> */ - -/* - * _CPU_Context_save_fp_context - * - * This routine is responsible for saving the FP context - * at *fp_context_ptr. If the point to load the FP context - * from is changed then the pointer is modified by this routine. - * - * Sometimes a macro implementation of this is in cpu.h which dereferences - * the ** and a similarly named routine in this file is passed something - * like a (Context_Control_fp *). The general rule on making this decision - * is to avoid writing assembly language. - * - * or1k specific Information: - * - * This implementation of RTEMS considers the concept of - * "fast context switching", as defined in the or1k architecture - * specification. Whether or not this makes a significant - * impact on speed is dubious, however it is not a significant - * impediment to include it. It probably wastes a few cycles on - * every floating point context switch. - * - * This implementation will currently not work on a processor where - * the integer unit and floating point unit are not the same size. I - * am waiting on an architecture change to make this feasible. It - * should work fine on 64 bit architectures, except for the fact that - * the variables are declared as 32 bits. This shouldn't really make - * a difference, as the fact that they must be registers should force - * them into a 64 bit word anyway. - * - * The decision as to whether to do 32 or 64 bit saves is performed - * at run time based on the configuration of the CPUCFGR register. This - * takes a performance hit of a few cycles, but this should be a very - * small percentage of the total number of cycles necessary to do the - * save, and doesn't require special code for 32 or 64 bit versions. - * - * ADDITIONAL INFORMATION: - * - * It has been unanimously agreed that floating point will not be - * included in the initial releases of the Or1k chips, and that - * significant changes to the floating point architecture may - * occur before any such release will ever be implemented. The code - * below is therefore never called and never used. - */ - -void _CPU_Context_save_fp( - void **fp_context_ptr -) -{ - register uint32_t temp; - register uint32_t address = (uint32_t )(*fp_context_ptr); - register uint32_t xfer; - register uint32_t loop; - - /* %0 is a temporary register which is used for several - values throughout the code. %3 contains the address - to save the context, and is modified during the course - of the context save. %1 is a second dummy register - which is used during transfer of the floating point - value to memory. %2 is an end of loop marker which - is compared against the pointer %3. */ - - asm volatile ("l.mfspr %0,r0,0x02 \n\t" /* CPUCFGR */ - "l.andi %0,%0,0x380 \n\t" /* OF32S or OV64S or OF64S */ - "l.sfnei %0,0x0 \n\t" - "l.bf _L_nofps \n\t" /* exit if no floating point */ - "l.sfeqi %0,0x080 \n\t" /* (DELAY) single precision? */ - "l.mfspr %0,r0,0x11 \n\t" /* Load Status Register */ - "l.srli %0,%0,58 \n\t" /* Move CID into low byte*32 */ - "l.bnf _L_spfp_loops \n\t" /* Branch on single precision */ - "l.addi %2,%0,0x20 \n" /* Terminating condition */ - /**** Double Precision Floating Point Section ****/ - "_L_dpfp_loops: \n\t" - "l.mfspr %1,%0,0x600 \n\t" /* Load VFRx */ - "l.sd 0(%3),%1 \n\t" /* Save VFRx */ - "l.addi %0,%0,0x01 \n\t" /* Increment counter */ - "l.sfeq %0,%2 \n\t" /* Branch if incomplete */ - "l.bf _L_dpfp_loops \n\t" - "l.addi %3,%3,0x08 \n\t" /* (DELAY) update pointer */ - "l.bnf _L_nofps \n\t" /* exit */ - "l.nop \n" - /**** Single Precision Floating Point Section ****/ - "_L_spfp_loops: \n\t" - "l.mfspr %1,%0,0x600 \n\t" /* Load VFRx */ - "l.sw 0(%3),%1 \n\t" /* Save VFRx */ - "l.addi %0,%0,0x01 \n\t" /* Increment counter */ - "l.sfeq %0,%2 \n\t" /* Branch if incomplete */ - "l.bf _L_spfp_loops \n\t" - "l.addi %3,%3,0x04 \n" /* (DELAY) update pointer */ - "_L_nofps: \n\t" /* End of context save */ - : "=&r" (temp), "=r" (xfer), "=&r" (loop), "+r" (address)); -} - -/* - * _CPU_Context_restore_fp_context - * - * This routine is responsible for restoring the FP context - * at *fp_context_ptr. If the point to load the FP context - * from is changed then the pointer is modified by this routine. - * - * - */ - -void _CPU_Context_restore_fp( - void **fp_context_ptr -) -{ - register uint32_t temp; - register uint32_t address = (uint32_t )(*fp_context_ptr); - register uint32_t xfer; - register uint32_t loop; - - /* The reverse of Context_save_fp */ - /* %0 is a temporary register which is used for several - values throughout the code. %1 contains the address - to save the context, and is modified during the course - of the context save. %2 is a second dummy register - which is used during transfer of the floating point - value to memory. %3 is an end of loop marker which - is compared against the pointer %1. */ - - asm volatile ("l.mfspr %0,r0,0x02 \n\t" /* CPUCFGR */ - "l.andi %0,%0,0x380 \n\t" /* OF32S or OV64S or OF64S */ - "l.sfnei %0,0x0 \n\t" - "l.bf _L_nofpr \n\t" /* exit if no floating point */ - "l.sfeqi %0,0x080 \n\t" /* (DELAY) single precision? */ - "l.mfspr %0,r0,0x11 \n\t" /* Load Status Register */ - "l.srli %0,%0,58 \n\t" /* Move CID into low byte*32 */ - "l.bnf _L_spfp_loopr \n\t" /* Branch on single precision */ - "l.addi %3,%0,0x20 \n" /* Terminating condition */ - /**** Double Precision Floating Point Section ****/ - "_L_dpfp_loopr: \n\t" - "l.mfspr %2,%0,0x600 \n\t" /* Load VFRx */ - "l.sd 0(%1),%2 \n\t" /* Save VFRx */ - "l.addi %0,%0,0x01 \n\t" /* Increment counter */ - "l.sfeq %0,%3 \n\t" /* Branch if incomplete */ - "l.bf _L_dpfp_loopr \n\t" - "l.addi %1,%1,0x08 \n\t" /* (DELAY) update pointer */ - "l.bnf _L_nofpr \n\t" /* exit */ - "l.nop \n" - /**** Single Precision Floating Point Section ****/ - "_L_spfp_loopr: \n\t" - "l.mfspr %2,%0,0x600 \n\t" /* Load VFRx */ - "l.sw 0(%1),%2 \n\t" /* Save VFRx */ - "l.addi %0,%0,0x01 \n\t" /* Increment counter */ - "l.sfeq %0,%3 \n\t" /* Branch if incomplete */ - "l.bf _L_spfp_loopr \n\t" - "l.addi %1,%1,0x04 \n" /* (DELAY) update pointer */ - "_L_nofpr: \n\t" /* End of context save */ - : "=&r" (temp), "+r" (address), "=r" (xfer), "=&r" (loop)); -} - -/* _CPU_Context_switch - * - * This routine performs a normal non-FP context switch. - * - * NO_CPU Specific Information: - * - * XXX document implementation including references if appropriate - */ - -void _CPU_Context_switch( - Context_Control *run, - Context_Control *heir -) -{ - register uint32_t temp1 = 0; - register uint32_t temp2 = 0; - - /* This function is really tricky. When this function is called, - we should save our state as we need it, and then grab the - new state from the pointer. We then do a longjump to this - code, replacing the current stack pointer with the new - environment. This function never returns. Instead, at some - later time, another person will call context switch with - our pointer in the heir variable, and they will longjump - to us. We will then continue. Let's see how this works... */ - - /* Technically, we could probably not worry about saving r3 - and r4, since these are parameters guaranteed to be saved - by the calling function. We could also probably get away - without saving r11, as that is filled in by the return - statement. But as a first cut I'm in favor of just saving - everything.... */ - - /* We could be more efficient and use compile time directives - for 32 or 64 bit, but this will allow the code to run on - everything without modification. Feel free to comment the - relevant sections out if you don't need it. */ - - /* We should probably write this whole routine in assembly - so that we can have seperate entry points for self restore - or context switch. You can't jump to local labels from - inline assembly across function calls, and I don't feel - like embedding all the .global directives here...it really - screws up the debugger. Oh well, what's 2 more instructions - and a branch really cost... */ - - /* One thing which we should do is check for 32 or 64 bit models - first, and then do one branch to the appropriate code section. - Currently, we check the architecture bit in CPUCFGR twice. Once - during the load section and again during restore. That is inefficient, - and considering this code is huge anyway, saving the few bytes - simply doesn't make any practical sense. FIX THIS LATER. */ - - /* Note that this routine assumes software context switches are - done with the same CID. In other words, it will not manage - the CIDs and assign a new one as necessary. If you tell it - to restore a context at CID 2, and the current one is at CID - 4, it will do what it is told. It will overwrite the registers - for context ID 2, meaning they are irretrievably lost. I hope - you saved them earlier.... */ - - /* Note that you can have a context jump anywhere you want, although - by default we will jump to the L_restore label. If you then modify - the location in the Context_Control structure, it will continue - whereever you told it to go. Note however that you had better - also have cleaned up the stack and frame pointers though, because - they are probably still set with the values obtained from - entering this function... */ - - asm volatile ("l.sfeqi %3,0x0 \n\t" /* Is this a self restore? */ - "l.bf _L_restore \n\t" /* Yes it is...go there */ - "l.nop \n\t" - - "l.lwz %0,0(%3) \n\t" /* Prefetch new context */ - "l.mfspr %2,r0,0x11 \n\t" /* Status Register */ - "l.sw 0(%1),%2 \n\t" /* Save it */ - "l.srli %2,%2,28 \n\t" /* Move CID into low byte */ - "l.mfspr %0,%2,0x20 \n\t" /* Offset from EPCR */ - "l.sw 4(%1),%0 \n\t" /* Store it */ - "l.mfspr %0,%2,0x30 \n\t" /* Offset from EEAR */ - "l.sw 8(%1),%0 \n\t" /* Store it */ - "l.mfspr %0,%2,0x40 \n\t" /* Offset from ESR */ - "l.sw 12(%1),%0 \n\t" /* Store it */ - "l.mfspr %0,r0,0x02 \n\t" /* CPUCFGR */ - "l.andi %0,%0,0x40 \n\t" /* OB64S */ - "l.sfnei %0,0x0 \n\t" - "l.bf _L_64bit \n\t" /* 64 bit architecture */ - "l.movhi %0,hi(_L_restore)\n\t" - - /**** 32 bit implementation ****/ - "l.ori %0,%0,lo(_L_restore)\n\t" - "l.sw 140(%1),%0 \n\t" /* Save the PC */ - "l.lwz %0,140(%3) \n\t" /* New PC. Expect cache miss */ - "l.sw 16(%1),r1 \n\t" - "l.sw 20(%1),r2 \n\t" - "l.sw 24(%1),r3 \n\t" - "l.sw 28(%1),r4 \n\t" - "l.sw 32(%1),r5 \n\t" - "l.sw 36(%1),r6 \n\t" - "l.sw 40(%1),r7 \n\t" - "l.sw 44(%1),r8 \n\t" - "l.sw 48(%1),r9 \n\t" - "l.sw 52(%1),r10 \n\t" - "l.sw 56(%1),r11 \n\t" - "l.sw 60(%1),r12 \n\t" - "l.sw 64(%1),r13 \n\t" - "l.sw 68(%1),r14 \n\t" - "l.sw 72(%1),r15 \n\t" - "l.sw 76(%1),r16 \n\t" - "l.sw 80(%1),r17 \n\t" - "l.sw 84(%1),r18 \n\t" - "l.sw 88(%1),r19 \n\t" - "l.sw 92(%1),r20 \n\t" - "l.sw 96(%1),r21 \n\t" - "l.sw 100(%1),r22 \n\t" - "l.sw 104(%1),r23 \n\t" - "l.sw 108(%1),r24 \n\t" - "l.sw 112(%1),r25 \n\t" - "l.sw 116(%1),r26 \n\t" - "l.sw 120(%1),r27 \n\t" - "l.sw 124(%1),r28 \n\t" - "l.sw 128(%1),r29 \n\t" - "l.sw 132(%1),r30 \n\t" - "l.jr %0 \n\t" /* Go there */ - "l.sw 136(%1),r31 \n" /* Store the last reg */ - - /**** 64 bit implementation ****/ - "_L_64bit: \n\t" - "l.ori %0,%0,lo(_L_restore)\n\t" - "l.sw 264(%1),%0 \n\t" - "l.sd 16(%1),r1 \n\t" - "l.sd 24(%1),r2 \n\t" - "l.sd 32(%1),r3 \n\t" - "l.sd 40(%1),r4 \n\t" - "l.sd 48(%1),r5 \n\t" - "l.sd 56(%1),r6 \n\t" - "l.sd 64(%1),r7 \n\t" - "l.sd 72(%1),r8 \n\t" - "l.sd 80(%1),r9 \n\t" - "l.sd 88(%1),r10 \n\t" - "l.sd 96(%1),r11 \n\t" - "l.sd 104(%1),r12 \n\t" - "l.sd 112(%1),r13 \n\t" - "l.sd 120(%1),r14 \n\t" - "l.sd 128(%1),r15 \n\t" - "l.sd 136(%1),r16 \n\t" - "l.sd 144(%1),r17 \n\t" - "l.sd 152(%1),r18 \n\t" - "l.sd 160(%1),r19 \n\t" - "l.sd 168(%1),r20 \n\t" - "l.sd 176(%1),r21 \n\t" - "l.sd 184(%1),r22 \n\t" - "l.sd 192(%1),r23 \n\t" - "l.sd 200(%1),r24 \n\t" - "l.sd 208(%1),r25 \n\t" - "l.sd 216(%1),r26 \n\t" - "l.sd 224(%1),r27 \n\t" - "l.sd 232(%1),r28 \n\t" - "l.sd 240(%1),r29 \n\t" - "l.sd 248(%1),r30 \n\t" - "l.jr %0 \n\t" /* Go to the new PC */ - "l.sd 256(%1),r31 \n" /* Store the last reg */ - - /**** The restoration routine. ****/ - - /* Note that when we return from this function, - we will actually be returning to a different - context than when we left. The debugger might - have conniptions over this, but we'll have to - reengineer that later. The stack and status - registers will all be changed, however we - will not touch the global interrupt mask. */ - - /* Also note, when doing any restore, the most - important registers are r1, r2, and r9. These - will be accessed immediately upon exiting the - routine, and so we want to make sure we load - them as early as possible in case they are - not in cache */ - - "_L_restore: \n\t" /* Restore "heir" */ - "l.mfspr %2,r0,0x11 \n\t" /* Status Register */ - "l.movhi %0,0x07FF \n\t" /* ~SR mask */ - "l.ori %0,%0,0xD1FF \n\t" - "l.and %2,%0,%2 \n\t" /* save the global bits */ - "l.movhi %0,0xF800 \n\t" /* SR mask */ - "l.ori %0,%0,0x2E00 \n\t" - "l.lwz %1,0(%3) \n\t" /* Get the previous SR */ - "l.and %0,%1,%0 \n\t" /* Mask out the global bits */ - "l.or %2,%2,%0 \n\t" /* Combine local/global */ - "l.mtspr r0,%2,0x11 \n\t" /* Restore the status register */ - - "l.mfspr %0,r0,0x02 \n\t" /* CPUCFGR */ - "l.andi %0,%0,0x40 \n\t" /* OB64S */ - "l.sfnei %0,0x0 \n\t" /* Save the 64 bit flag */ - - "l.srli %2,%2,28 \n\t" /* Move CID into low byte */ - "l.lwz %0,4(%3) \n\t" - "l.mtspr %2,%0,0x20 \n\t" /* Offset from EPCR */ - "l.lwz %0,8(%3) \n\t" - "l.mtspr %2,%0,0x30 \n\t" /* Offset from EEAR */ - "l.lwz %0,12(%3) \n\t" - - "l.bf _L_r64bit \n\t" /* 64 bit architecture */ - "l.mtspr %2,%0,0x30 \n\t" /* Offset from EEAR (DELAY) */ - - /**** 32 bit restore ****/ - "l.lwz r1,16(%3) \n\t" - "l.lwz r2,20(%3) \n\t" - "l.lwz r9,48(%3) \n\t" - "l.lwz r3,24(%3) \n\t" - "l.lwz r4,28(%3) \n\t" - "l.lwz r5,32(%3) \n\t" - "l.lwz r6,36(%3) \n\t" - "l.lwz r7,40(%3) \n\t" - "l.lwz r8,44(%3) \n\t" - "l.lwz r10,52(%3) \n\t" - "l.lwz r11,56(%3) \n\t" - "l.lwz r12,60(%3) \n\t" - "l.lwz r13,64(%3) \n\t" - "l.lwz r14,68(%3) \n\t" - "l.lwz r15,72(%3) \n\t" - "l.lwz r16,76(%3) \n\t" - "l.lwz r17,80(%3) \n\t" - "l.lwz r18,84(%3) \n\t" - "l.lwz r19,88(%3) \n\t" - "l.lwz r20,92(%3) \n\t" - "l.lwz r21,96(%3) \n\t" - "l.lwz r22,100(%3) \n\t" - "l.lwz r23,104(%3) \n\t" - "l.lwz r24,108(%3) \n\t" - "l.lwz r25,112(%3) \n\t" - "l.lwz r26,116(%3) \n\t" - "l.lwz r27,120(%3) \n\t" - "l.lwz r28,124(%3) \n\t" - "l.lwz r29,128(%3) \n\t" - "l.lwz r30,132(%3) \n\t" - "l.j _L_return \n\t" - "l.lwz r31,136(%3) \n" - - /**** 64 bit restore ****/ - "_L_r64bit: \n\t" - "l.ld r1,16(%3) \n\t" - "l.ld r2,24(%3) \n\t" - "l.ld r9,80(%3) \n\t" - "l.ld r3,32(%3) \n\t" - "l.ld r4,40(%3) \n\t" - "l.ld r5,48(%3) \n\t" - "l.ld r6,56(%3) \n\t" - "l.ld r7,64(%3) \n\t" - "l.ld r8,72(%3) \n\t" - "l.ld r10,88(%3) \n\t" - "l.ld r11,96(%3) \n\t" - "l.ld r12,104(%3) \n\t" - "l.ld r13,112(%3) \n\t" - "l.ld r14,120(%3) \n\t" - "l.ld r15,128(%3) \n\t" - "l.ld r16,136(%3) \n\t" - "l.ld r17,144(%3) \n\t" - "l.ld r18,152(%3) \n\t" - "l.ld r19,160(%3) \n\t" - "l.ld r20,168(%3) \n\t" - "l.ld r21,176(%3) \n\t" - "l.ld r22,184(%3) \n\t" - "l.ld r23,192(%3) \n\t" - "l.ld r24,200(%3) \n\t" - "l.ld r25,208(%3) \n\t" - "l.ld r26,216(%3) \n\t" - "l.ld r27,224(%3) \n\t" - "l.ld r28,232(%3) \n\t" - "l.ld r29,240(%3) \n\t" - "l.ld r30,248(%3) \n\t" - "l.ld r31,256(%3) \n" - - "_L_return: \n\t" /* End of routine */ - - : "=&r" (temp1), "+r" (run), "=&r" (temp2) - : "r" (heir)); - - /* Note that some registers were used for parameter passing and - temporary registeres (temp1 and temp2). These values were - saved and restored across context calls, but the values that - the caller needs should have been stored on the stack. The - C code should now restore these from the stack, since r1 and - r2 have been restored, and return to the location specified - by r9. Then, all should be happy in the world. */ -} - -/* - * _CPU_Context_restore - * - * This routine is generally used only to restart self in an - * efficient manner. It may simply be a label in _CPU_Context_switch. - * - * NOTE: May be unnecessary to reload some registers. - * - * Or1k Specific Information: - * - * In our implementation, this simply redirects to swich context - */ - -void _CPU_Context_restore( - Context_Control *run -) -{ - _CPU_Context_switch(run,NULL); -} - - -/* void __ISR_Handler() - * - * This routine provides the RTEMS interrupt management. - * - * Or1k Specific Information: - * - * Based on the Or1k interrupt architecture described in chapter 16 - * and the exception architecture described in chapter 9 - */ - -void _ISR_Handler(uint32_t vector,uint32_t ProgramCounter, - uint32_t EffectiveAddress,uint32_t StatusRegister) -{ - /* - * This discussion ignores a lot of the ugly details in a real - * implementation such as saving enough registers/state to be - * able to do something real. Keep in mind that the goal is - * to invoke a user's ISR handler which is written in C and - * uses a certain set of registers. - * - * Also note that the exact order is to a large extent flexible. - * Hardware will dictate a sequence for a certain subset of - * _ISR_Handler while requirements for setting - */ - - /* - * At entry to "common" _ISR_Handler, the vector number must be - * available. On some CPUs the hardware puts either the vector - * number or the offset into the vector table for this ISR in a - * known place. If the hardware does not give us this information, - * then the assembly portion of RTEMS for this port will contain - * a set of distinct interrupt entry points which somehow place - * the vector number in a known place (which is safe if another - * interrupt nests this one) and branches to _ISR_Handler. - * - * save some or all context on stack - * may need to save some special interrupt information for exit - * - * #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE ) - * if ( _ISR_Nest_level == 0 ) - * switch to software interrupt stack - * #endif - * - * _ISR_Nest_level++; - * - * _Thread_Dispatch_disable_level++; - * - * (*_ISR_Vector_table[ vector ])( vector ); - * - * --_ISR_Nest_level; - * - * if ( _ISR_Nest_level ) - * goto the label "exit interrupt (simple case)" - * - * #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE ) - * restore stack - * #endif - * - * if ( !_Context_Switch_necessary ) - * goto the label "exit interrupt (simple case)" - * - * if ( !_ISR_Signals_to_thread_executing ) - * _ISR_Signals_to_thread_executing = FALSE; - * goto the label "exit interrupt (simple case)" - * - * call _Thread_Dispatch() or prepare to return to _ISR_Dispatch - * - * prepare to get out of interrupt - * return from interrupt (maybe to _ISR_Dispatch) - * - * LABEL "exit interrupt (simple case): - * prepare to get out of interrupt - * return from interrupt - */ - - /* In the Or1k architecture, exceptions are handled in the - startup code of the board support package. Thus, this - routine is never called. Or1k exception routines are called - with the following prototype: - - function(int vector#, int PC, int Address, int StatusRegister); - - These parameters are snapshots of the system when the exception - was encountered. If virtual memory is active, things like the - PC and Address may have little meaning, as they are referenced - in physical space, not the virtual space of the process. - */ -} diff --git a/cpukit/score/cpu/or32/preinstall.am b/cpukit/score/cpu/or32/preinstall.am deleted file mode 100644 index c9711aa196..0000000000 --- a/cpukit/score/cpu/or32/preinstall.am +++ /dev/null @@ -1,43 +0,0 @@ -## Automatically generated by ampolish3 - Do not edit - -if AMPOLISH3 -$(srcdir)/preinstall.am: Makefile.am - $(AMPOLISH3) $(srcdir)/Makefile.am > $(srcdir)/preinstall.am -endif - -PREINSTALL_DIRS = -DISTCLEANFILES += $(PREINSTALL_DIRS) - -PREINSTALL_FILES = -CLEANFILES += $(PREINSTALL_FILES) - -$(PROJECT_INCLUDE)/rtems/$(dirstamp): - @$(mkdir_p) $(PROJECT_INCLUDE)/rtems - @: > $(PROJECT_INCLUDE)/rtems/$(dirstamp) -PREINSTALL_DIRS += $(PROJECT_INCLUDE)/rtems/$(dirstamp) - -$(PROJECT_INCLUDE)/rtems/asm.h: rtems/asm.h $(PROJECT_INCLUDE)/rtems/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/asm.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/asm.h - -$(PROJECT_INCLUDE)/rtems/score/$(dirstamp): - @$(mkdir_p) $(PROJECT_INCLUDE)/rtems/score - @: > $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) -PREINSTALL_DIRS += $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) - -$(PROJECT_INCLUDE)/rtems/score/cpu.h: rtems/score/cpu.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/cpu.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/cpu.h - -$(PROJECT_INCLUDE)/rtems/score/types.h: rtems/score/types.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/types.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/types.h - -$(PROJECT_INCLUDE)/rtems/score/or32.h: rtems/score/or32.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/or32.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/or32.h - -$(PROJECT_INCLUDE)/rtems/score/cpu_asm.h: rtems/score/cpu_asm.h $(PROJECT_INCLUDE)/rtems/score/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/score/cpu_asm.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score/cpu_asm.h - diff --git a/cpukit/score/cpu/or32/rtems/asm.h b/cpukit/score/cpu/or32/rtems/asm.h deleted file mode 100644 index d22c06c8ab..0000000000 --- a/cpukit/score/cpu/or32/rtems/asm.h +++ /dev/null @@ -1,100 +0,0 @@ -/** - * @file rtems/asm.h - * - * This include file attempts to address the problems - * caused by incompatible flavors of assemblers and - * toolsets. It primarily addresses variations in the - * use of leading underscores on symbols and the requirement - * that register names be preceded by a %. - */ - -/* - * NOTE: The spacing in the use of these macros - * is critical to them working as advertised. - * - * COPYRIGHT: - * - * This file is based on similar code found in newlib available - * from ftp.cygnus.com. The file which was used had no copyright - * notice. This file is freely distributable as long as the source - * of the file is noted. This file is: - * - * COPYRIGHT (c) 1994-1997. - * On-Line Applications Research Corporation (OAR). - * - * $Id$ - */ - -#ifndef _RTEMS_ASM_H -#define _RTEMS_ASM_H - -/* - * Indicate we are in an assembly file and get the basic CPU definitions. - */ - -#ifndef ASM -#define ASM -#endif -#include <rtems/score/targopts.h> -#include <rtems/score/or32.h> - -/* - * Recent versions of GNU cpp define variables which indicate the - * need for underscores and percents. If not using GNU cpp or - * the version does not support this, then you will obviously - * have to define these as appropriate. - */ - -#ifndef __USER_LABEL_PREFIX__ -#define __USER_LABEL_PREFIX__ _ -#endif - -#ifndef __REGISTER_PREFIX__ -#define __REGISTER_PREFIX__ -#endif - -/* ANSI concatenation macros. */ - -#define CONCAT1(a, b) CONCAT2(a, b) -#define CONCAT2(a, b) a ## b - -/* Use the right prefix for global labels. */ - -#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) - -/* Use the right prefix for registers. */ - -#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) - -/* - * define macros for all of the registers on this CPU - * - * EXAMPLE: #define d0 REG (d0) - */ - -/* - * Define macros to handle section beginning and ends. - */ - - -#define BEGIN_CODE_DCL .text -#define END_CODE_DCL -#define BEGIN_DATA_DCL .data -#define END_DATA_DCL -#define BEGIN_CODE .text -#define END_CODE -#define BEGIN_DATA -#define END_DATA -#define BEGIN_BSS -#define END_BSS -#define END - -/* - * Following must be tailor for a particular flavor of the C compiler. - * They may need to put underscores in front of the symbols. - */ - -#define PUBLIC(sym) .global SYM (sym) -#define EXTERN(sym) .global SYM (sym) - -#endif diff --git a/cpukit/score/cpu/or32/rtems/score/cpu.h b/cpukit/score/cpu/or32/rtems/score/cpu.h deleted file mode 100644 index 7be4ca17d0..0000000000 --- a/cpukit/score/cpu/or32/rtems/score/cpu.h +++ /dev/null @@ -1,1070 +0,0 @@ -/** - * @file rtems/score/cpu.h - */ - -/* - * This include file contains macros pertaining to the Opencores - * or1k processor family. - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * This file adapted from no_cpu example of the RTEMS distribution. - * The body has been modified for the Opencores Or1k implementation by - * Chris Ziomkowski. <chris@asics.ws> - * - */ - -#ifndef _RTEMS_SCORE_CPU_H -#define _RTEMS_SCORE_CPU_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include "rtems/score/or32.h" /* pick up machine definitions */ -#ifndef ASM -#include "rtems/score/types.h" -#endif - -/* conditional compilation parameters */ - -/* - * Should the calls to _Thread_Enable_dispatch be inlined? - * - * If TRUE, then they are inlined. - * If FALSE, then a subroutine call is made. - * - * Basically this is an example of the classic trade-off of size - * versus speed. Inlining the call (TRUE) typically increases the - * size of RTEMS while speeding up the enabling of dispatching. - * [NOTE: In general, the _Thread_Dispatch_disable_level will - * only be 0 or 1 unless you are in an interrupt handler and that - * interrupt handler invokes the executive.] When not inlined - * something calls _Thread_Enable_dispatch which in turns calls - * _Thread_Dispatch. If the enable dispatch is inlined, then - * one subroutine call is avoided entirely.] - * - */ - -#define CPU_INLINE_ENABLE_DISPATCH FALSE - -/* - * Should the body of the search loops in _Thread_queue_Enqueue_priority - * be unrolled one time? In unrolled each iteration of the loop examines - * two "nodes" on the chain being searched. Otherwise, only one node - * is examined per iteration. - * - * If TRUE, then the loops are unrolled. - * If FALSE, then the loops are not unrolled. - * - * The primary factor in making this decision is the cost of disabling - * and enabling interrupts (_ISR_Flash) versus the cost of rest of the - * body of the loop. On some CPUs, the flash is more expensive than - * one iteration of the loop body. In this case, it might be desirable - * to unroll the loop. It is important to note that on some CPUs, this - * code is the longest interrupt disable period in RTEMS. So it is - * necessary to strike a balance when setting this parameter. - * - */ - -#define CPU_UNROLL_ENQUEUE_PRIORITY TRUE - -/* - * Does RTEMS manage a dedicated interrupt stack in software? - * - * If TRUE, then a stack is allocated in _ISR_Handler_initialization. - * If FALSE, nothing is done. - * - * If the CPU supports a dedicated interrupt stack in hardware, - * then it is generally the responsibility of the BSP to allocate it - * and set it up. - * - * If the CPU does not support a dedicated interrupt stack, then - * the porter has two options: (1) execute interrupts on the - * stack of the interrupted task, and (2) have RTEMS manage a dedicated - * interrupt stack. - * - * If this is TRUE, CPU_ALLOCATE_INTERRUPT_STACK should also be TRUE. - * - * Only one of CPU_HAS_SOFTWARE_INTERRUPT_STACK and - * CPU_HAS_HARDWARE_INTERRUPT_STACK should be set to TRUE. It is - * possible that both are FALSE for a particular CPU. Although it - * is unclear what that would imply about the interrupt processing - * procedure on that CPU. - * - * For the first cut of an Or1k implementation, let's not worry - * about this, and assume that our C code will autoperform any - * frame/stack allocation for us when the procedure is entered. - * If we write assembly code, we may have to deal with this manually. - * This can be changed later if we find it is impossible. This - * behavior is desireable as it allows us to work in low memory - * environments where we don't have room for a dedicated stack. - */ - -#define CPU_HAS_SOFTWARE_INTERRUPT_STACK FALSE - -/* - * Does this CPU have hardware support for a dedicated interrupt stack? - * - * If TRUE, then it must be installed during initialization. - * If FALSE, then no installation is performed. - * - * If this is TRUE, CPU_ALLOCATE_INTERRUPT_STACK should also be TRUE. - * - * Only one of CPU_HAS_SOFTWARE_INTERRUPT_STACK and - * CPU_HAS_HARDWARE_INTERRUPT_STACK should be set to TRUE. It is - * possible that both are FALSE for a particular CPU. Although it - * is unclear what that would imply about the interrupt processing - * procedure on that CPU. - * - */ - -#define CPU_HAS_HARDWARE_INTERRUPT_STACK FALSE - -/* - * Does RTEMS allocate a dedicated interrupt stack in the Interrupt Manager? - * - * If TRUE, then the memory is allocated during initialization. - * If FALSE, then the memory is allocated during initialization. - * - * This should be TRUE is CPU_HAS_SOFTWARE_INTERRUPT_STACK is TRUE - * or CPU_INSTALL_HARDWARE_INTERRUPT_STACK is TRUE. - * - */ - -#define CPU_ALLOCATE_INTERRUPT_STACK FALSE - -/* - * 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 - -/* - * Does the CPU have hardware floating point? - * - * If TRUE, then the RTEMS_FLOATING_POINT task attribute is supported. - * If FALSE, then the RTEMS_FLOATING_POINT task attribute is ignored. - * - * If there is a FP coprocessor such as the i387 or mc68881, then - * the answer is TRUE. - * - * The macro name "OR1K_HAS_FPU" should be made CPU specific. - * It indicates whether or not this CPU model has FP support. For - * example, it would be possible to have an i386_nofp CPU model - * which set this to false to indicate that you have an i386 without - * an i387 and wish to leave floating point support out of RTEMS. - * - * The CPU_SOFTWARE_FP is used to indicate whether or not there - * is software implemented floating point that must be context - * switched. The determination of whether or not this applies - * is very tool specific and the state saved/restored is also - * compiler specific. - * - * Or1k Specific Information: - * - * At this time there are no implementations of Or1k that are - * expected to implement floating point. More importantly, the - * floating point architecture is expected to change significantly - * before such chips are fabricated. - */ - -#if ( OR1K_HAS_FPU == 1 ) -#define CPU_HARDWARE_FP TRUE -#define CPU_SOFTWARE_FP FALSE -#else -#define CPU_HARDWARE_FP FALSE -#define CPU_SOFTWARE_FP TRUE -#endif - - -/* - * Are all tasks RTEMS_FLOATING_POINT tasks implicitly? - * - * If TRUE, then the RTEMS_FLOATING_POINT task attribute is assumed. - * If FALSE, then the RTEMS_FLOATING_POINT task attribute is followed. - * - * If CPU_HARDWARE_FP is FALSE, then this should be FALSE as well. - * - */ - -#define CPU_ALL_TASKS_ARE_FP FALSE - -/* - * Should the IDLE task have a floating point context? - * - * If TRUE, then the IDLE task is created as a RTEMS_FLOATING_POINT task - * and it has a floating point context which is switched in and out. - * If FALSE, then the IDLE task does not have a floating point context. - * - * Setting this to TRUE negatively impacts the time required to preempt - * the IDLE task from an interrupt because the floating point context - * must be saved as part of the preemption. - * - */ - -#define CPU_IDLE_TASK_IS_FP FALSE - -/* - * Should the saving of the floating point registers be deferred - * until a context switch is made to another different floating point - * task? - * - * If TRUE, then the floating point context will not be stored until - * necessary. It will remain in the floating point registers and not - * disturned until another floating point task is switched to. - * - * If FALSE, then the floating point context is saved when a floating - * point task is switched out and restored when the next floating point - * task is restored. The state of the floating point registers between - * those two operations is not specified. - * - * If the floating point context does NOT have to be saved as part of - * interrupt dispatching, then it should be safe to set this to TRUE. - * - * Setting this flag to TRUE results in using a different algorithm - * for deciding when to save and restore the floating point context. - * The deferred FP switch algorithm minimizes the number of times - * the FP context is saved and restored. The FP context is not saved - * until a context switch is made to another, different FP task. - * Thus in a system with only one FP task, the FP context will never - * be saved or restored. - * - */ - -#define CPU_USE_DEFERRED_FP_SWITCH TRUE - -/* - * Does this port provide a CPU dependent IDLE task implementation? - * - * If TRUE, then the routine _CPU_Thread_Idle_body - * must be provided and is the default IDLE thread body instead of - * _CPU_Thread_Idle_body. - * - * If FALSE, then use the generic IDLE thread body if the BSP does - * not provide one. - * - * This is intended to allow for supporting processors which have - * a low power or idle mode. When the IDLE thread is executed, then - * the CPU can be powered down. - * - * The order of precedence for selecting the IDLE thread body is: - * - * 1. BSP provided - * 2. CPU dependent (if provided) - * 3. generic (if no BSP and no CPU dependent) - * - */ - -#define CPU_PROVIDES_IDLE_THREAD_BODY FALSE - -/* - * Does the stack grow up (toward higher addresses) or down - * (toward lower addresses)? - * - * If TRUE, then the grows upward. - * If FALSE, then the grows toward smaller addresses. - * - * Or1k Specific Information: - * - * Previously I had misread the documentation and set this - * to true. Surprisingly, it seemed to work anyway. I'm - * therefore not 100% sure exactly what this does. It should - * be correct as it is now, however. - */ - -#define CPU_STACK_GROWS_UP FALSE - -/* - * The following is the variable attribute used to force alignment - * of critical RTEMS structures. On some processors it may make - * sense to have these aligned on tighter boundaries than - * the minimum requirements of the compiler in order to have as - * much of the critical data area as possible in a cache line. - * - * The placement of this macro in the declaration of the variables - * is based on the syntactically requirements of the GNU C - * "__attribute__" extension. For example with GNU C, use - * the following to force a structures to a 32 byte boundary. - * - * __attribute__ ((aligned (32))) - * - * NOTE: Currently only the Priority Bit Map table uses this feature. - * To benefit from using this, the data must be heavily - * used so it will stay in the cache and used frequently enough - * in the executive to justify turning this on. - * - */ - -#define CPU_STRUCTURE_ALIGNMENT __attribute__ ((aligned (32))) - -/* - * Define what is required to specify how the network to host conversion - * routines are handled. - * - * Or1k Specific Information: - * - * This version of RTEMS is designed specifically to run with - * big endian architectures. If you want little endian, you'll - * have to make the appropriate adjustments here and write - * efficient routines for byte swapping. The Or1k architecture - * doesn't do this very well. - */ - -#define CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES FALSE -#define CPU_BIG_ENDIAN TRUE -#define CPU_LITTLE_ENDIAN FALSE - -/* - * The following defines the number of bits actually used in the - * interrupt field of the task mode. How those bits map to the - * CPU interrupt levels is defined by the routine _CPU_ISR_Set_level(). - * - */ - -#define CPU_MODES_INTERRUPT_MASK 0x00000001 - -/* - * Processor defined structures required for cpukit/score. - */ - - -/* - * Contexts - * - * Generally there are 2 types of context to save. - * 1. Interrupt registers to save - * 2. Task level registers to save - * - * This means we have the following 3 context items: - * 1. task level context stuff:: Context_Control - * 2. floating point task stuff:: Context_Control_fp - * 3. special interrupt level context :: Context_Control_interrupt - * - * On some processors, it is cost-effective to save only the callee - * preserved registers during a task context switch. This means - * that the ISR code needs to save those registers which do not - * persist across function calls. It is not mandatory to make this - * distinctions between the caller/callee saves registers for the - * purpose of minimizing context saved during task switch and on interrupts. - * If the cost of saving extra registers is minimal, simplicity is the - * choice. Save the same context on interrupt entry as for tasks in - * this case. - * - * Additionally, if gdb is to be made aware of RTEMS tasks for this CPU, then - * care should be used in designing the context area. - * - * On some CPUs with hardware floating point support, the Context_Control_fp - * structure will not be used or it simply consist of an array of a - * fixed number of bytes. This is done when the floating point context - * is dumped by a "FP save context" type instruction and the format - * is not really defined by the CPU. In this case, there is no need - * to figure out the exact format -- only the size. Of course, although - * this is enough information for RTEMS, it is probably not enough for - * a debugger such as gdb. But that is another problem. - * - * - */ - -#ifdef OR1K_64BIT_ARCH -#define or1kreg uint64_t -#else -#define or1kreg uint32_t -#endif - -/* SR_MASK is the mask of values that will be copied to/from the status - register on a context switch. Some values, like the flag state, are - specific on the context, while others, such as interrupt enables, - are global. The currently defined global bits are: - - 0x00001 SUPV: Supervisor mode - 0x00002 EXR: Exceptions on/off - 0x00004 EIR: Interrupts enabled/disabled - 0x00008 DCE: Data cache enabled/disabled - 0x00010 ICE: Instruction cache enabled/disabled - 0x00020 DME: Data MMU enabled/disabled - 0x00040 IME: Instruction MMU enabled/disabled - 0x00080 LEE: Little/Big Endian enable - 0x00100 CE: Context ID/shadow regs enabled/disabled - 0x01000 OVE: Overflow causes exception - 0x04000 EP: Exceptions @ 0x0 or 0xF0000000 - 0x08000 PXR: Partial exception recognition enabled/disabled - 0x10000 SUMRA: SPR's accessible/inaccessible - - The context specific bits are: - - 0x00200 F Branch flag indicator - 0x00400 CY Carry flag indicator - 0x00800 OV Overflow flag indicator - 0x02000 DSX Delay slot exception occurred - 0xF8000000 CID Current Context ID -*/ - -#define SR_MASK 0xF8002E00 - -typedef enum { - SR_SUPV = 0x00001, - SR_EXR = 0x00002, - SR_EIR = 0x00004, - SR_DCE = 0x00008, - SR_ICE = 0x00010, - SR_DME = 0x00020, - SR_IME = 0x00040, - SR_LEE = 0x00080, - SR_CE = 0x00100, - SR_F = 0x00200, - SR_CY = 0x00400, - SR_OV = 0x00800, - SR_OVE = 0x01000, - SR_DSX = 0x02000, - SR_EP = 0x04000, - SR_PXR = 0x08000, - SR_SUMRA = 0x10000, - SR_CID = 0xF8000000, -} StatusRegisterBits; - -typedef struct { - uint32_t sr; /* Current status register non persistent values */ - uint32_t esr; /* Saved exception status register */ - uint32_t ear; /* Saved exception effective address register */ - uint32_t epc; /* Saved exception PC register */ - or1kreg r[31]; /* Registers */ - or1kreg pc; /* Context PC 4 or 8 bytes for 64 bit alignment */ -} Context_Control; - -typedef int Context_Control_fp; -typedef Context_Control CPU_Interrupt_frame; -#define _CPU_Null_fp_context 0 -#define _CPU_Interrupt_stack_low 0 -#define _CPU_Interrupt_stack_high 0 - -/* - * The following table contains the information required to configure - * the XXX processor 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; - uint32_t idle_task_stack_size; - uint32_t interrupt_stack_size; - uint32_t extra_mpci_receive_server_stack; - void * (*stack_allocate_hook)( uint32_t ); - void (*stack_free_hook)( void* ); - /* end of fields required on all CPUs */ -} rtems_cpu_table; - -/* - * Macros to access required entires in the CPU Table are in - * the file rtems/system.h. - * - */ - -/* - * Macros to access OR1K specific additions to the CPU Table - * - */ - -/* There are no CPU specific additions to the CPU Table for this port. */ - -/* - * This variable is optional. It is used on CPUs on which it is difficult - * to generate an "uninitialized" FP context. It is filled in by - * _CPU_Initialize and copied into the task's FP context area during - * _CPU_Context_Initialize. - * - */ - -/* SCORE_EXTERN Context_Control_fp _CPU_Null_fp_context; */ - -/* - * On some CPUs, RTEMS supports a software managed interrupt stack. - * This stack is allocated by the Interrupt Manager and the switch - * is performed in _ISR_Handler. These variables contain pointers - * to the lowest and highest addresses in the chunk of memory allocated - * for the interrupt stack. Since it is unknown whether the stack - * grows up or down (in general), this give the CPU dependent - * code the option of picking the version it wants to use. - * - * NOTE: These two variables are required if the macro - * CPU_HAS_SOFTWARE_INTERRUPT_STACK is defined as TRUE. - * - */ - -/* -SCORE_EXTERN void *_CPU_Interrupt_stack_low; -SCORE_EXTERN void *_CPU_Interrupt_stack_high; -*/ - -/* - * With some compilation systems, it is difficult if not impossible to - * call a high-level language routine from assembly language. This - * is especially true of commercial Ada compilers and name mangling - * C++ ones. This variable can be optionally defined by the CPU porter - * and contains the address of the routine _Thread_Dispatch. This - * can make it easier to invoke that routine at the end of the interrupt - * sequence (if a dispatch is necessary). - * - */ - -SCORE_EXTERN void (*_CPU_Thread_dispatch_pointer)(); - -/* - * Nothing prevents the porter from declaring more CPU specific variables. - * - */ - -/* XXX: if needed, put more variables here */ - -/* - * The size of the floating point context area. On some CPUs this - * will not be a "sizeof" because the format of the floating point - * area is not defined -- only the size is. This is usually on - * CPUs with a "floating point save context" instruction. - * - * Or1k Specific Information: - * - * We don't support floating point in this version, so the size is 0 - */ - -#define CPU_CONTEXT_FP_SIZE 0 - -/* - * Amount of extra stack (above minimum stack size) required by - * MPCI receive server thread. Remember that in a multiprocessor - * system this thread must exist and be able to process all directives. - * - */ - -#define CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK 0 - -/* - * This defines the number of entries in the ISR_Vector_table managed - * by RTEMS. - * - */ - -#define CPU_INTERRUPT_NUMBER_OF_VECTORS 16 -#define CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER (CPU_INTERRUPT_NUMBER_OF_VECTORS - 1) - -/* - * Should be large enough to run all RTEMS tests. This insures - * that a "reasonable" small application should not have any problems. - * - */ - -#define CPU_STACK_MINIMUM_SIZE 4096 - -/* - * CPU's worst alignment requirement for data types on a byte boundary. This - * alignment does not take into account the requirements for the stack. - * - */ - -#define CPU_ALIGNMENT 8 - -/* - * This number corresponds to the byte alignment requirement for the - * heap handler. This alignment requirement may be stricter than that - * for the data types alignment specified by CPU_ALIGNMENT. It is - * common for the heap to follow the same alignment requirement as - * CPU_ALIGNMENT. If the CPU_ALIGNMENT is strict enough for the heap, - * then this should be set to CPU_ALIGNMENT. - * - * NOTE: This does not have to be a power of 2 although it should be - * a multiple of 2 greater than or equal to 2. The requirement - * to be a multiple of 2 is because the heap uses the least - * significant field of the front and back flags to indicate - * that a block is in use or free. So you do not want any odd - * length blocks really putting length data in that bit. - * - * On byte oriented architectures, CPU_HEAP_ALIGNMENT normally will - * have to be greater or equal to than CPU_ALIGNMENT to ensure that - * elements allocated from the heap meet all restrictions. - * - */ - -#define CPU_HEAP_ALIGNMENT CPU_ALIGNMENT - -/* - * This number corresponds to the byte alignment requirement for memory - * buffers allocated by the partition manager. This alignment requirement - * may be stricter than that for the data types alignment specified by - * CPU_ALIGNMENT. It is common for the partition to follow the same - * alignment requirement as CPU_ALIGNMENT. If the CPU_ALIGNMENT is strict - * enough for the partition, then this should be set to CPU_ALIGNMENT. - * - * NOTE: This does not have to be a power of 2. It does have to - * be greater or equal to than CPU_ALIGNMENT. - * - */ - -#define CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT - -/* - * This number corresponds to the byte alignment requirement for the - * stack. This alignment requirement may be stricter than that for the - * data types alignment specified by CPU_ALIGNMENT. If the CPU_ALIGNMENT - * is strict enough for the stack, then this should be set to 0. - * - * NOTE: This must be a power of 2 either 0 or greater than CPU_ALIGNMENT. - * - */ - -#define CPU_STACK_ALIGNMENT 0 - -/* ISR handler macros */ - -/* - * Support routine to initialize the RTEMS vector table after it is allocated. - * - * NO_CPU Specific Information: - * - * XXX document implementation including references if appropriate - */ - -#define _CPU_Initialize_vectors() - - -/* - * Disable all interrupts for an RTEMS critical section. The previous - * level is returned in _level. - * - */ - -#define _CPU_ISR_Disable( _isr_cookie ) \ - { \ - (_isr_cookie) = 0; /* do something to prevent warnings */ \ - } - -/* - * Enable interrupts to the previous level (returned by _CPU_ISR_Disable). - * This indicates the end of an RTEMS critical section. The parameter - * _level is not modified. - * - */ - -#define _CPU_ISR_Enable( _isr_cookie ) \ - { \ - } - -/* - * This temporarily restores the interrupt to _level before immediately - * disabling them again. This is used to divide long RTEMS critical - * sections into two or more parts. The parameter _level is not - * modified. - * - */ - -#define _CPU_ISR_Flash( _isr_cookie ) \ - { \ - } - -/* - * Map interrupt level in task mode onto the hardware that the CPU - * actually provides. Currently, interrupt levels which do not - * map onto the CPU in a generic fashion are undefined. Someday, - * it would be nice if these were "mapped" by the application - * via a callout. For example, m68k has 8 levels 0 - 7, levels - * 8 - 255 would be available for bsp/application specific meaning. - * This could be used to manage a programmable interrupt controller - * via the rtems_task_mode directive. - * - * The get routine usually must be implemented as a subroutine. - * - */ - -#define _CPU_ISR_Set_level( new_level ) \ - { \ - } - -uint32_t _CPU_ISR_Get_level( void ); - -/* end of ISR handler macros */ - -/* Context handler macros */ - -/* - * Initialize the context to a state suitable for starting a - * task after a context restore operation. Generally, this - * involves: - * - * - setting a starting address - * - preparing the stack - * - preparing the stack and frame pointers - * - setting the proper interrupt level in the context - * - initializing the floating point context - * - * This routine generally does not set any unnecessary register - * in the context. The state of the "general data" registers is - * undefined at task start time. - * - * NOTE: This is_fp parameter is TRUE if the thread is to be a floating - * point thread. This is typically only used on CPUs where the - * FPU may be easily disabled by software such as on the SPARC - * where the PSR contains an enable FPU bit. - * - */ - -#define _CPU_Context_Initialize( _the_context, _stack_base, _size, \ - _isr, _entry_point, _is_fp ) \ - { \ - memset(_the_context,'\0',sizeof(Context_Control)); \ - (_the_context)->r[1] = (uint32_t *) ((uint32_t ) (_stack_base) + (_size) ); \ - (_the_context)->r[2] = (uint32_t *) ((uint32_t ) (_stack_base)); \ - (_the_context)->sr = (_isr) ? 0x0000001B : 0x0000001F; \ - (_the_context)->pc = (uint32_t *) _entry_point ; \ - } - -/* - * This routine is responsible for somehow restarting the currently - * executing task. If you are lucky, then all that is necessary - * is restoring the context. Otherwise, there will need to be - * a special assembly routine which does something special in this - * case. Context_Restore should work most of the time. It will - * not work if restarting self conflicts with the stack frame - * assumptions of restoring a context. - * - */ - -#define _CPU_Context_Restart_self( _the_context ) \ - _CPU_Context_restore( (_the_context) ); - -/* - * The purpose of this macro is to allow the initial pointer into - * a floating point context area (used to save the floating point - * context) to be at an arbitrary place in the floating point - * context area. - * - * This is necessary because some FP units are designed to have - * their context saved as a stack which grows into lower addresses. - * Other FP units can be saved by simply moving registers into offsets - * from the base of the context area. Finally some FP units provide - * a "dump context" instruction which could fill in from high to low - * or low to high based on the whim of the CPU designers. - * - */ - -#define _CPU_Context_Fp_start( _base, _offset ) \ - ( (void *) _Addresses_Add_offset( (_base), (_offset) ) ) - -/* - * This routine initializes the FP context area passed to it to. - * There are a few standard ways in which to initialize the - * floating point context. The code included for this macro assumes - * that this is a CPU in which a "initial" FP context was saved into - * _CPU_Null_fp_context and it simply copies it to the destination - * context passed to it. - * - * Other models include (1) not doing anything, and (2) putting - * a "null FP status word" in the correct place in the FP context. - * - */ - -#define _CPU_Context_Initialize_fp( _destination ) \ - { \ - *((Context_Control_fp *) *((void **) _destination)) = _CPU_Null_fp_context; \ - } - -/* end of Context handler macros */ - -/* Fatal Error manager macros */ - -/* - * This routine copies _error into a known place -- typically a stack - * location or a register, optionally disables interrupts, and - * halts/stops the CPU. - * - */ - -#define _CPU_Fatal_halt( _error ) \ - { \ - } - -/* end of Fatal Error manager macros */ - -/* Bitfield handler macros */ - -/* - * This routine sets _output to the bit number of the first bit - * set in _value. _value is of CPU dependent type Priority_Bit_map_control. - * This type may be either 16 or 32 bits wide although only the 16 - * least significant bits will be used. - * - * There are a number of variables in using a "find first bit" type - * instruction. - * - * (1) What happens when run on a value of zero? - * (2) Bits may be numbered from MSB to LSB or vice-versa. - * (3) The numbering may be zero or one based. - * (4) The "find first bit" instruction may search from MSB or LSB. - * - * RTEMS guarantees that (1) will never happen so it is not a concern. - * (2),(3), (4) are handled by the macros _CPU_Priority_mask() and - * _CPU_Priority_bits_index(). These three form a set of routines - * which must logically operate together. Bits in the _value are - * set and cleared based on masks built by _CPU_Priority_mask(). - * The basic major and minor values calculated by _Priority_Major() - * and _Priority_Minor() are "massaged" by _CPU_Priority_bits_index() - * to properly range between the values returned by the "find first bit" - * instruction. This makes it possible for _Priority_Get_highest() to - * calculate the major and directly index into the minor table. - * This mapping is necessary to ensure that 0 (a high priority major/minor) - * is the first bit found. - * - * This entire "find first bit" and mapping process depends heavily - * on the manner in which a priority is broken into a major and minor - * components with the major being the 4 MSB of a priority and minor - * the 4 LSB. Thus (0 << 4) + 0 corresponds to priority 0 -- the highest - * priority. And (15 << 4) + 14 corresponds to priority 254 -- the next - * to the lowest priority. - * - * If your CPU does not have a "find first bit" instruction, then - * there are ways to make do without it. Here are a handful of ways - * to implement this in software: - * - * - a series of 16 bit test instructions - * - a "binary search using if's" - * - _number = 0 - * if _value > 0x00ff - * _value >>=8 - * _number = 8; - * - * if _value > 0x0000f - * _value >=8 - * _number += 4 - * - * _number += bit_set_table[ _value ] - * - * where bit_set_table[ 16 ] has values which indicate the first - * bit set - * - */ - - /* #define CPU_USE_GENERIC_BITFIELD_CODE FALSE */ -#define CPU_USE_GENERIC_BITFIELD_CODE TRUE -#define CPU_USE_GENERIC_BITFIELD_DATA TRUE - -#if (CPU_USE_GENERIC_BITFIELD_CODE == FALSE) - - /* Get a value between 0 and N where N is the bit size */ - /* This routine makes use of the fact that CPUCFGR defines - OB32S to have value 32, and OB64S to have value 64. If - this ever changes then this routine will fail. */ -#define _CPU_Bitfield_Find_first_bit( _value, _output ) \ - asm volatile ("l.mfspr %0,r0,0x2 \n\t"\ - "l.andi %0,%0,0x60 \n\t"\ - "l.ff1 %1,%1,r0 \n\t"\ - "l.sub %0,%0,%1 \n\t" : "=&r" (_output), "+r" (_value)); - -#endif - -/* end of Bitfield handler macros */ - -/* - * This routine builds the mask which corresponds to the bit fields - * as searched by _CPU_Bitfield_Find_first_bit(). See the discussion - * for that routine. - * - */ - -#if (CPU_USE_GENERIC_BITFIELD_CODE == FALSE) - -#define _CPU_Priority_Mask( _bit_number ) \ - (1 << _bit_number) - -#endif - -/* - * This routine translates the bit numbers returned by - * _CPU_Bitfield_Find_first_bit() into something suitable for use as - * a major or minor component of a priority. See the discussion - * for that routine. - * - */ - -#if (CPU_USE_GENERIC_BITFIELD_CODE == FALSE) - -#define _CPU_Priority_bits_index( _priority ) \ - (_priority) - -#endif - -/* 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( - uint32_t vector, - proc_ptr new_handler, - proc_ptr *old_handler -); - -/* - * _CPU_ISR_install_vector - * - * This routine installs an interrupt vector. - * - * NO_CPU Specific Information: - * - * XXX document implementation including references if appropriate - */ - -void _CPU_ISR_install_vector( - uint32_t vector, - proc_ptr new_handler, - proc_ptr *old_handler -); - -/* - * _CPU_Install_interrupt_stack - * - * This routine installs the hardware interrupt stack pointer. - * - * NOTE: It need only be provided if CPU_HAS_HARDWARE_INTERRUPT_STACK - * is TRUE. - * - */ - -void _CPU_Install_interrupt_stack( void ); - -/* - * _CPU_Thread_Idle_body - * - * This routine is the CPU dependent IDLE thread body. - * - * NOTE: It need only be provided if CPU_PROVIDES_IDLE_THREAD_BODY - * is TRUE. - * - */ - -void _CPU_Thread_Idle_body( void ); - -/* - * _CPU_Context_switch - * - * This routine switches from the run context to the heir context. - * - * Or1k Specific Information: - * - * Please see the comments in the .c file for a description of how - * this function works. There are several things to be aware of. - */ - -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. It may simply be a label in _CPU_Context_switch. - * - * NOTE: May be unnecessary to reload some registers. - * - */ - -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 -); - -/* The following routine swaps the endian format of an unsigned int. - * It must be static because it is referenced indirectly. - * - * This version will work on any processor, but if there is a better - * way for your CPU PLEASE use it. The most common way to do this is to: - * - * swap least significant two bytes with 16-bit rotate - * swap upper and lower 16-bits - * swap most significant two bytes with 16-bit rotate - * - * Some CPUs have special instructions which swap a 32-bit quantity in - * a single instruction (e.g. i486). It is probably best to avoid - * an "endian swapping control bit" in the CPU. One good reason is - * that interrupts would probably have to be disabled to insure that - * an interrupt does not try to access the same "chunk" with the wrong - * endian. Another good reason is that on some CPUs, the endian bit - * endianness for ALL fetches -- both code and data -- so the code - * will be fetched incorrectly. - * - */ - -static inline uint32_t CPU_swap_u32( - uint32_t value -) -{ - uint32_t byte1, byte2, byte3, byte4, swapped; - - byte4 = (value >> 24) & 0xff; - byte3 = (value >> 16) & 0xff; - byte2 = (value >> 8) & 0xff; - byte1 = value & 0xff; - - swapped = (byte1 << 24) | (byte2 << 16) | (byte3 << 8) | byte4; - return( swapped ); -} - -#define CPU_swap_u16( value ) \ - (((value&0xff) << 8) | ((value >> 8)&0xff)) - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/cpukit/score/cpu/or32/rtems/score/cpu_asm.h b/cpukit/score/cpu/or32/rtems/score/cpu_asm.h deleted file mode 100644 index a509b36ae6..0000000000 --- a/cpukit/score/cpu/or32/rtems/score/cpu_asm.h +++ /dev/null @@ -1,72 +0,0 @@ -/** - * @file rtems/score/cpu_asm.h - */ - -/* - * Very loose template for an include file for the cpu_asm.? file - * if it is implemented as a ".S" file (preprocessed by cpp) instead - * of a ".s" file (preprocessed by gm4 or gasp). - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * $Id$ - * - */ - -#ifndef _RTEMS_SCORE_CPU_ASM_H -#define _RTEMS_SCORE_CPU_ASM_H - -/* pull in the generated offsets */ - -#include <rtems/score/offsets.h> - -/* - * Hardware General Registers - */ - -/* put something here */ - -/* - * Hardware Floating Point Registers - */ - -/* put something here */ - -/* - * Hardware Control Registers - */ - -/* put something here */ - -/* - * Calling Convention - */ - -/* put something here */ - -/* - * Temporary registers - */ - -/* put something here */ - -/* - * Floating Point Registers - SW Conventions - */ - -/* put something here */ - -/* - * Temporary floating point registers - */ - -/* put something here */ - -#endif - -/* end of file */ diff --git a/cpukit/score/cpu/or32/rtems/score/or32.h b/cpukit/score/cpu/or32/rtems/score/or32.h deleted file mode 100644 index f54fbf2bbb..0000000000 --- a/cpukit/score/cpu/or32/rtems/score/or32.h +++ /dev/null @@ -1,72 +0,0 @@ -/** - * @file rtems/score/or32.h - */ - -/* - * This include file contains Or1k definitions pertaining to the Opencores - * or1k processor family. - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * This file adapted from no_cpu example of the RTEMS distribution. - * The body has been modified for the Opencores Or1k implementation by - * Chris Ziomkowski. <chris@asics.ws> - * - */ - -#ifndef _RTEMS_SCORE_OR32_H -#define _RTEMS_SCORE_OR32_H - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * This file contains the information required to build - * RTEMS for a particular member of the or1k CPU family. - * It does this by setting variables to indicate which - * implementation dependent features are present in a particular - * member of the family. - * - * This is a good place to list all the known CPU models - * that this port supports and which RTEMS CPU model they correspond - * to. - */ - -#if defined(rtems_multilib) -/* - * Figure out all CPU Model Feature Flags based upon compiler - * predefines. - */ - -#define CPU_MODEL_NAME "rtems_multilib" -#define OR1K_HAS_FPU 1 - -#elif defined(or1200) - -#define CPU_MODEL_NAME "OR1200" -#define OR1K_HAS_FPU 0 - -#else - -#define CPU_MODEL_NAME "Generic Or1k Compatible" -#define OR1K_HAS_FPU 0 - -#endif - -/* - * Define the name of the CPU family. - */ - -#define CPU_NAME "OpenRisc 1000" - -#ifdef __cplusplus -} -#endif - -#endif /* _RTEMS_SCORE_OR32_H */ diff --git a/cpukit/score/cpu/or32/rtems/score/types.h b/cpukit/score/cpu/or32/rtems/score/types.h deleted file mode 100644 index 1e511a9c70..0000000000 --- a/cpukit/score/cpu/or32/rtems/score/types.h +++ /dev/null @@ -1,67 +0,0 @@ -/** - * @file rtems/score/types.h - */ - -/* - * This include file contains type definitions pertaining to the Opencores - * or1k processor family. - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * This file adapted from no_cpu example of the RTEMS distribution. - * The body has been modified for the Opencores Or1k implementation by - * Chris Ziomkowski. <chris@asics.ws> - */ - -#ifndef _RTEMS_SCORE_TYPES_H -#define _RTEMS_SCORE_TYPES_H - -#ifndef ASM - -#include <rtems/stdint.h> - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * This section defines the basic types for this processor. - */ - -typedef unsigned long long unsigned64; /* unsigned 64-bit integer */ - -typedef unsigned16 Priority_Bit_map_control; - -typedef signed long long signed64; /* 64 bit signed integer */ - -typedef unsigned32 boolean; /* Boolean value */ - -typedef float single_precision; /* single precision float */ -typedef double double_precision; /* double precision float */ - -typedef void no_cpu_isr; -typedef void ( *no_cpu_isr_entry )( void ); - -/* - * Turns out the that the disable POSIX option doesn't work - * too well. Specifically, the libc library still wants to know - * these POSIX values. We'll go ahead and include them here - * until such time as someone like OAR who is familiar with this - * can figure out what should really be done. - */ - -#define NAME_MAX 255 -#define LINK_MAX 8 - -#ifdef __cplusplus -} -#endif - -#endif /* !ASM */ - -#endif |