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authorMiodrag Dinic <miodrag.dinic@imgtec.com>2017-06-19 17:50:11 +0200
committerRalf Baechle <ralf@linux-mips.org>2017-06-29 02:42:24 +0200
commit3f88ec633362efa454ca4ea289d4ad91cd44a976 (patch)
treefe3391efb7b1e447b7b4cc265cca2daf8f66c9a5 /arch/mips/include/uapi
parent3daf281f2ce3b80cc1abf04f355f066e37f69451 (diff)
MIPS: unaligned: Add DSP lwx & lhx missaligned access support
Add handling of missaligned access for DSP load instructions lwx & lhx. Since DSP instructions share SPECIAL3 opcode with other non-DSP instructions, necessary logic was inserted for distinguishing between instructions with SPECIAL3 opcode. For that purpose, the instruction format for DSP instructions is added to arch/mips/include/uapi/asm/inst.h. Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtech.com> Cc: James.Hogan@imgtec.com Cc: Paul.Burton@imgtec.com Cc: Raghu.Gandham@imgtec.com Cc: Leonid.Yegoshin@imgtec.com Cc: Douglas.Leung@imgtec.com Cc: Petar.Jovanovic@imgtec.com Cc: Goran.Ferenc@imgtec.com Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16511/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/uapi')
-rw-r--r--arch/mips/include/uapi/asm/inst.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index e5f538584b8e..d61897535926 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -762,6 +762,16 @@ struct msa_mi10_format { /* MSA MI10 */
;))))))
};
+struct dsp_format { /* SPEC3 DSP format instructions */
+ __BITFIELD_FIELD(unsigned int opcode : 6,
+ __BITFIELD_FIELD(unsigned int base : 5,
+ __BITFIELD_FIELD(unsigned int index : 5,
+ __BITFIELD_FIELD(unsigned int rd : 5,
+ __BITFIELD_FIELD(unsigned int op : 5,
+ __BITFIELD_FIELD(unsigned int func : 6,
+ ;))))))
+};
+
struct spec3_format { /* SPEC3 */
__BITFIELD_FIELD(unsigned int opcode:6,
__BITFIELD_FIELD(unsigned int rs:5,
@@ -1053,6 +1063,7 @@ union mips_instruction {
struct b_format b_format;
struct ps_format ps_format;
struct v_format v_format;
+ struct dsp_format dsp_format;
struct spec3_format spec3_format;
struct fb_format fb_format;
struct fp0_format fp0_format;