diff options
Diffstat (limited to 'c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c')
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c b/c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c index 6c16cfa733..b9f8a4358b 100644 --- a/c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c +++ b/c/src/lib/libcpu/sh/sh7032/score/cpu_asm.c @@ -125,133 +125,6 @@ unsigned int sh_set_irq_priority( } /* - * _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. - */ - -void _CPU_Context_save_fp( - Context_Control_fp **fp_context_ptr -) -{ -} - -/* - * _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. - * - * 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. - */ - -void _CPU_Context_restore_fp( - Context_Control_fp **fp_context_ptr -) -{ -} - -/* _CPU_Context_switch - * - * This routine performs a normal non-FP context switch. - */ - -/* within __CPU_Context_switch: - * _CPU_Context_switch - * _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: It should be safe not to store r4, r5 - * - * NOTE: It is doubtful if r0 is really needed to be stored - * - * NOTE: gbr is added, but should not be necessary, as it is - * only used globally in this port. - */ - -/* - * FIXME: This is an ugly hack, but we wanted to avoid recalculating - * the offset each time Context_Control is changed - */ -void __CPU_Context_switch( - Context_Control *run, /* r4 */ - Context_Control *heir /* r5 */ -) -{ - -asm volatile( - ".global __CPU_Context_switch\n" -"__CPU_Context_switch:\n" - -" add %0,r4\n" - -" stc.l sr,@-r4\n" -" stc.l gbr,@-r4\n" -" mov.l r0,@-r4\n" -" mov.l r1,@-r4\n" -" mov.l r2,@-r4\n" -" mov.l r3,@-r4\n" - -" mov.l r6,@-r4\n" -" mov.l r7,@-r4\n" -" mov.l r8,@-r4\n" -" mov.l r9,@-r4\n" -" mov.l r10,@-r4\n" -" mov.l r11,@-r4\n" -" mov.l r12,@-r4\n" -" mov.l r13,@-r4\n" -" mov.l r14,@-r4\n" -" sts.l pr,@-r4\n" -" sts.l mach,@-r4\n" -" sts.l macl,@-r4\n" -" mov.l r15,@-r4\n" - -" mov r5, r4\n" - :: "i" (sizeof(Context_Control)) - ); - - asm volatile( - ".global __CPU_Context_restore\n" -"__CPU_Context_restore:\n" -" mov.l @r4+,r15\n" -" lds.l @r4+,macl\n" -" lds.l @r4+,mach\n" -" lds.l @r4+,pr\n" -" mov.l @r4+,r14\n" -" mov.l @r4+,r13\n" -" mov.l @r4+,r12\n" -" mov.l @r4+,r11\n" -" mov.l @r4+,r10\n" -" mov.l @r4+,r9\n" -" mov.l @r4+,r8\n" -" mov.l @r4+,r7\n" -" mov.l @r4+,r6\n" - -" mov.l @r4+,r3\n" -" mov.l @r4+,r2\n" -" mov.l @r4+,r1\n" -" mov.l @r4+,r0\n" -" ldc.l @r4+,gbr\n" -" ldc.l @r4+,sr\n" - -" rts\n" -" nop\n" ); -} - -/* * This routine provides the RTEMS interrupt management. */ |