diff options
Diffstat (limited to 'c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c')
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c b/c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c index 979a42e102..11a5dab76f 100644 --- a/c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c +++ b/c/src/lib/libcpu/sh/sh7750/score/cpu_asm.c @@ -51,206 +51,6 @@ extern proc_ptr _Hardware_isr_Table[]; register unsigned long *stack_ptr asm("r15"); /* - * _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 /* r4 */ -) -{ -#if SH_HAS_FPU - -asm volatile("\n\ - mov.l @%0,r4 \n\ - add %1,r4\n\ - sts.l fpscr,@-r4\n\ - sts.l fpul,@-r4\n\ - lds %2,fpscr\n\ - fmov dr14,@-r4\n\ - fmov dr12,@-r4\n\ - fmov dr10,@-r4\n\ - fmov dr8,@-r4\n\ - fmov dr6,@-r4\n\ - fmov dr4,@-r4\n\ - fmov dr2,@-r4\n\ - fmov dr0,@-r4\n\ - " -#ifdef SH4_USE_X_REGISTERS - "\ - lds %3,fpscr\n\ - fmov xd14,@-r4\n\ - fmov xd12,@-r4\n\ - fmov xd10,@-r4\n\ - fmov xd8,@-r4\n\ - fmov xd6,@-r4\n\ - fmov xd4,@-r4\n\ - fmov xd2,@-r4\n\ - fmov xd0,@-r4\n\ - " -#endif - "lds %4,fpscr\n\ - " - : - : "r"(fp_context_ptr), "r"(sizeof(Context_Control_fp)), - "r"(SH4_FPSCR_SZ), "r"(SH4_FPSCR_PR | SH4_FPSCR_SZ), "r"(SH4_FPSCR_PR) - : "r4", "r0"); - -#endif -} - -/* - * _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 /* r4 */ -) -{ -#if SH_HAS_FPU - -asm volatile("\n\ - mov.l @%0,r4 \n\ - " -#ifdef SH4_USE_X_REGISTERS - "\n\ - lds %1,fpscr\n\ - fmov @r4+,xd0\n\ - fmov @r4+,xd2\n\ - fmov @r4+,xd4\n\ - fmov @r4+,xd6\n\ - fmov @r4+,xd8\n\ - fmov @r4+,xd10\n\ - fmov @r4+,xd12\n\ - fmov @r4+,xd14\n\ - " -#endif - "\n\ - lds %2,fpscr\n\ - fmov @r4+,dr0\n\ - fmov @r4+,dr2\n\ - fmov @r4+,dr4\n\ - fmov @r4+,dr6\n\ - fmov @r4+,dr8\n\ - fmov @r4+,dr10\n\ - fmov @r4+,dr12\n\ - fmov @r4+,dr14\n\ - lds.l @r4+,fpul\n\ - lds.l @r4+,fpscr\n\ - " : - : "r"(fp_context_ptr), "r"(SH4_FPSCR_PR | SH4_FPSCR_SZ), "r"(SH4_FPSCR_SZ) - : "r4", "r0"); - -#endif -} - -/* _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("\n\ - .global __CPU_Context_switch\n\ -__CPU_Context_switch:\n\ -\n\ - add %0,r4\n\ - \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\ -\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\ -\n\ - mov r5, r4" - :: "i" (sizeof(Context_Control)) - ); - - asm volatile("\n\ - .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\ -\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\ -\n\ - rts\n\ - nop" ); -} - -/* * This routine provides the RTEMS interrupt management. */ |