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cmd/internal/obj/arm64: fix typos in document 

The current document mismatches Go syntax loads a signed-byte
instruction "MOVB" with GNU syntax loads an 64bit double-word
instruction "ldr". This is just a typo in the document, the
assembler has the correct encoding. This patch fix this error.

Fixes #39367

Change-Id: Idb8f65ca540514ee5bc8f07073e756838710ba93
Reviewed-on: https://go-review.googlesource.com/c/go/+/236217
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
fanzha02 2020-06-03 10:33:03 +08:00 committed by Cherry Zhang
parent 58f017bcea
commit 5aaeda19c1
1 changed files with 2 additions and 1 deletions
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3
src/cmd/internal/obj/arm64/doc.go
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@ -22,7 +22,8 @@ using different register names.
Examples:
MOVD.P -8(R10), R8 <=> ldr x8, [x10],#-8
MOVB.W 16(R16), R10 <=> ldr x10, [x16,#16]!
MOVB.W 16(R16), R10 <=> ldrsb x10, [x16,#16]!
MOVBU.W 16(R16), R10 <=> ldrb x10, [x16,#16]!
3. Go uses a series of MOV instructions as load and store.