diff options
Diffstat (limited to 'src/c-st-ext.adoc')
| -rw-r--r-- | src/c-st-ext.adoc | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/c-st-ext.adoc b/src/c-st-ext.adoc index 97aca5f..6bac419 100644 --- a/src/c-st-ext.adoc +++ b/src/c-st-ext.adoc @@ -49,7 +49,7 @@ and/or D) is also implemented. In addition, RV32C includes a compressed jump and link instruction to compress short-range subroutine calls, where the same opcode is used to compress ADDIW for RV64C and RV128C. -[TIP] +[NOTE] ==== Double-precision loads and stores are a significant fraction of static and dynamic instructions, hence the motivation to include them in the @@ -100,7 +100,7 @@ instructions in one C instruction. It is important to note that the C extension is not designed to be a stand-alone ISA, and is meant to be used alongside a base ISA. -[TIP] +[NOTE] ==== Variable-length instruction sets have long been used to improve code density. For example, the IBM Stretch cite:[stretch], developed in the late 1950s, had @@ -526,7 +526,7 @@ latexmath:[$\textit{rs1}{\neq}\texttt{x0}$]; the code point with latexmath:[$\textit{rs1}{=}\texttt{x0}$] corresponds to the C.EBREAK instruction. -[TIP] +[NOTE] ==== Strictly speaking, C.JALR does not expand exactly to a base RVI instruction as the value added to the PC to form the link address is 2 @@ -707,7 +707,7 @@ C.MV copies the value in register _rs2_ into register _rd_. C.MV expands into `add rd, x0, rs2`. C.MV is only valid when `rs2≠x0` the code points with `rs2=x0` correspond to the C.JR instruction. The code points with `rs2≠x0` and `rd=x0` are HINTs. -[TIP] +[NOTE] ==== _C.MV expands to a different instruction than the canonical MV pseudoinstruction, which instead uses ADDI. Implementations that handle |