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authorJoel Sherrill <joel.sherrill@OARcorp.com>2009-02-27 19:20:41 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2009-02-27 19:20:41 +0000
commitdc5da2289c4487bc3854725a559805774fb622c1 (patch)
tree528f210d3314eeb356293cf2f86f67ce99febd22 /c/src
parent2009-02-27 Joel Sherrill <joel.sherrill@OARcorp.com> (diff)
downloadrtems-dc5da2289c4487bc3854725a559805774fb622c1.tar.bz2
2009-02-27 Joel Sherrill <joel.sherrill@OARcorp.com>
* Makefile.am: Remove unnecessary copy of cpu_asm.S * console/Modif_cpu_asm.S: Removed.
Diffstat (limited to 'c/src')
-rw-r--r--c/src/lib/libbsp/m68k/gen68340/ChangeLog5
-rw-r--r--c/src/lib/libbsp/m68k/gen68340/Makefile.am4
-rw-r--r--c/src/lib/libbsp/m68k/gen68340/console/Modif_cpu_asm.S178
3 files changed, 7 insertions, 180 deletions
diff --git a/c/src/lib/libbsp/m68k/gen68340/ChangeLog b/c/src/lib/libbsp/m68k/gen68340/ChangeLog
index 9063be2ebf..9d446e512e 100644
--- a/c/src/lib/libbsp/m68k/gen68340/ChangeLog
+++ b/c/src/lib/libbsp/m68k/gen68340/ChangeLog
@@ -1,3 +1,8 @@
+2009-02-27 Joel Sherrill <joel.sherrill@OARcorp.com>
+
+ * Makefile.am: Remove unnecessary copy of cpu_asm.S
+ * console/Modif_cpu_asm.S: Removed.
+
2008-12-08 Ralf Corsépius <ralf.corsepius@rtems.org>
* bsp_specs: Backport from CVS-HEAD.
diff --git a/c/src/lib/libbsp/m68k/gen68340/Makefile.am b/c/src/lib/libbsp/m68k/gen68340/Makefile.am
index 0bf0309a8f..b744e7103f 100644
--- a/c/src/lib/libbsp/m68k/gen68340/Makefile.am
+++ b/c/src/lib/libbsp/m68k/gen68340/Makefile.am
@@ -37,8 +37,8 @@ startup_SOURCES = startup/bspclean.c ../../shared/bsplibc.c \
../../shared/sbrk.c ../../m68k/shared/setvec.c \
startup/dumpanic.c ../../shared/gnatinstallhandler.c
clock_SOURCES = clock/ckinit.c
-console_SOURCES = console/Modif_cpu_asm.S console/console.c \
- console/m340uart.c ../../shared/dummy_printk_support.c
+console_SOURCES = console/console.c console/m340uart.c \
+ ../../shared/dummy_printk_support.c
timer_SOURCES = timer/timer.c
noinst_LIBRARIES = libbsp.a
diff --git a/c/src/lib/libbsp/m68k/gen68340/console/Modif_cpu_asm.S b/c/src/lib/libbsp/m68k/gen68340/console/Modif_cpu_asm.S
deleted file mode 100644
index bc6176c59f..0000000000
--- a/c/src/lib/libbsp/m68k/gen68340/console/Modif_cpu_asm.S
+++ /dev/null
@@ -1,178 +0,0 @@
-/* cpu_asm.s
- *
- * This file contains all assembly code for the MC68020 implementation
- * of RTEMS.
- *
- * ATTENTION: Modified for benchmarks
- *
- * 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.
- *
- * $Id$
- */
-
-#include <rtems/asm.h>
-
- .text
-
-/*PAGE
- * void _Debug_ISR_Handler_Console()
- *
- * This routine provides the RTEMS interrupt management.
- *
- * NOTE:
- * Upon entry, the master stack will contain an interrupt stack frame
- * back to the interrupted thread and the interrupt stack will contain
- * a throwaway interrupt stack frame. If dispatching is enabled, this
- * is the outer most interrupt, and (a context switch is necessary or
- * the current thread has signals), then set up the master stack to
- * transfer control to the interrupt dispatcher.
- * NOTE:
- * USED TO MESURE THE TIME SPENT IN THE INTERRUPT SUBROUTINE
- * CS5 - CS8 are linked to an oscilloscope so that you can mesure
- * RTEMS overhead (BTW it's very short :) )
- */
-
-/*
- * With this approach, lower priority interrupts may
- * execute twice if a higher priority interrupt is
- * acknowledged before _Thread_Dispatch_disable is
- * increamented and the higher priority interrupt
- * preforms a context switch after executing. The lower
- * priority intterrupt will execute (1) at the end of the
- * higher priority interrupt in the new context if
- * permitted by the new interrupt level mask, and (2) when
- * the original context regains the cpu.
- */
-
-#if ( M68K_HAS_VBR == 1)
-.set SR_OFFSET, 0 | Status register offset
-.set PC_OFFSET, 2 | Program Counter offset
-.set FVO_OFFSET, 6 | Format/vector offset
-#else
-.set SR_OFFSET, 2 | Status register offset
-.set PC_OFFSET, 4 | Program Counter offset
-.set FVO_OFFSET, 0 | Format/vector offset placed in the stack
-#endif /* M68K_HAS_VBR */
-
-.set SAVED, 16 | space for saved registers
-
- .align 4
- .global SYM (_Debug_ISR_Handler_Console)
-
-SYM (_Debug_ISR_Handler_Console):
-
- |
- tst.w 0x14000000 | ALLUME CS5
- |
-
- addql #1,SYM (_Thread_Dispatch_disable_level) | disable multitasking
- moveml d0-d1/a0-a1,a7@- | save d0-d1,a0-a1
- movew a7@(SAVED+FVO_OFFSET),d0 | d0 = F/VO
- andl #0x0fff,d0 | d0 = vector offset in vbr
-
-#if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 )
- movew sr,d1 | Save status register
- oriw #0x700,sr | Disable interrupts
- tstl SYM (_ISR_Nest_level) | Interrupting an interrupt handler?
- bne 1f | Yes, just skip over stack switch code
- movel SYM(_CPU_Interrupt_stack_high),a0 | End of interrupt stack
- movel a7,a0@- | Save task stack pointer
- movel a0,a7 | Switch to interrupt stack
-1:
- addql #1,SYM(_ISR_Nest_level) | one nest level deeper
- movew d1,sr | Restore status register
-#else
- addql #1,SYM (_ISR_Nest_level) | one nest level deeper
-#endif /* CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 */
-
-#if ( M68K_HAS_PREINDEXING == 1 )
- movel @( SYM (_ISR_Vector_table),d0:w:1),a0| fetch the ISR
-#else
- movel # SYM (_ISR_Vector_table),a0 | a0 = base of RTEMS table
- addal d0,a0 | a0 = address of vector
- movel (a0),a0 | a0 = address of user routine
-#endif
-
- lsrl #2,d0 | d0 = vector number
- movel d0,a7@- | push vector number
-
- |
- tst.w 0x18000000 | ALLUME CS6
- |
-
- jbsr a0@ | invoke the user ISR
-
- |
- tst.w 0x18000000 | ALLUME CS6
- |
-
- addql #4,a7 | remove vector number
-
-#if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 )
- movew sr,d0 | Save status register
- oriw #0x700,sr | Disable interrupts
- subql #1,SYM(_ISR_Nest_level) | Reduce interrupt-nesting count
- bne 1f | Skip if return to interrupt
- movel (a7),a7 | Restore task stack pointer
-1:
- movew d0,sr | Restore status register
-#else
- subql #1,SYM (_ISR_Nest_level) | one less nest level
-#endif /* CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 */
-
- subql #1,SYM (_Thread_Dispatch_disable_level)
- | unnest multitasking
- bne Debug_exit | If dispatch disabled, Debug_exit
-
-#if ( M68K_HAS_SEPARATE_STACKS == 1 )
- movew #0xf000,d0 | isolate format nibble
- andw a7@(SAVED+FVO_OFFSET),d0 | get F/VO
- cmpiw #0x1000,d0 | is it a throwaway isf?
- bne Debug_exit | NOT outer level, so branch
-#endif
-
- tstl SYM (_Context_Switch_necessary)
- | Is thread switch necessary?
- bne bframe | Yes, invoke dispatcher
-
- tstl SYM (_ISR_Signals_to_thread_executing)
- | signals sent to Run_thread
- | while in interrupt handler?
- beq Debug_exit | No, then Debug_exit
-
-bframe: clrl SYM (_ISR_Signals_to_thread_executing)
- | If sent, will be processed
-#if ( M68K_HAS_SEPARATE_STACKS == 1 )
- movec msp,a0 | a0 = master stack pointer
- movew #0,a0@- | push format word
- movel # SYM (_ISR_Dispatch),a0@- | push return addr
- | filter out the trace bit to stop single step debugging breaking
- movew a0@(6+SR_OFFSET),d0
- andw #0x7FFF,d0
- movew d0,a0@- | push thread sr
- movec a0,msp | set master stack pointer
-#else
-
- | filter out the trace bit to stop single step debugging breaking
- movew a7@(16+SR_OFFSET),d0
- andw #0x7FFF,d0
- movew d0,sr
- jsr SYM (_Thread_Dispatch)
-#endif
-
-Debug_exit: moveml a7@+,d0-d1/a0-a1 | restore d0-d1,a0-a1
-#if ( M68K_HAS_VBR == 0 )
- addql #2,a7 | pop format/id
-#endif /* M68K_HAS_VBR */
-
- |
- tst.w 0x1C000000 | ALLUME CS7
- |
-
- rte | return to thread
- | OR _Isr_dispatch