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39 lines
950 B
39 lines
950 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* linux/arch/arm/vfp/entry.S |
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* |
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* Copyright (C) 2004 ARM Limited. |
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* Written by Deep Blue Solutions Limited. |
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*/ |
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#include <linux/init.h> |
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#include <linux/linkage.h> |
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#include <asm/thread_info.h> |
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#include <asm/vfpmacros.h> |
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#include <asm/assembler.h> |
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#include <asm/asm-offsets.h> |
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@ VFP entry point. |
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@ |
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@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb) |
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@ r2 = PC value to resume execution after successful emulation |
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@ r9 = normal "successful" return address |
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@ r10 = this threads thread_info structure |
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@ lr = unrecognised instruction return address |
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@ IRQs enabled. |
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@ |
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ENTRY(do_vfp) |
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inc_preempt_count r10, r4 |
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ldr r4, .LCvfp |
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ldr r11, [r10, #TI_CPU] @ CPU number |
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add r10, r10, #TI_VFPSTATE @ r10 = workspace |
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ldr pc, [r4] @ call VFP entry point |
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ENDPROC(do_vfp) |
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ENTRY(vfp_null_entry) |
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dec_preempt_count_ti r10, r4 |
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ret lr |
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ENDPROC(vfp_null_entry) |
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.align 2 |
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.LCvfp: |
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.word vfp_vector
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