powerpc/opcodes: Add shorter macros for registers for use with PPC_RAW_xx()

Today we have __REG_Rx macros . They are mainly meant for
internal use by macros __PPC_RA() and friends macros which
allows uses like __PPC_RA(R12).

When used with PPC_RAW_xx() macros, it gives a result which is
not very readable.

Add shorter macros _Rx in order to improve readability when
used with PPC_RAW_xx() macros.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ec34d92b7c2f810622261acfeeed4b0a0f4d01bd.1621506159.git.christophe.leroy@csgroup.eu

diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 212f014..a067df9 100644 (file)
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -76,6 +76,40 @@
 #define        __REGA0_R30     30
 #define        __REGA0_R31     31
 
+/* For use with PPC_RAW_() macros */
+#define        _R0     0
+#define        _R1     1
+#define        _R2     2
+#define        _R3     3
+#define        _R4     4
+#define        _R5     5
+#define        _R6     6
+#define        _R7     7
+#define        _R8     8
+#define        _R9     9
+#define        _R10    10
+#define        _R11    11
+#define        _R12    12
+#define        _R13    13
+#define        _R14    14
+#define        _R15    15
+#define        _R16    16
+#define        _R17    17
+#define        _R18    18
+#define        _R19    19
+#define        _R20    20
+#define        _R21    21
+#define        _R22    22
+#define        _R23    23
+#define        _R24    24
+#define        _R25    25
+#define        _R26    26
+#define        _R27    27
+#define        _R28    28
+#define        _R29    29
+#define        _R30    30
+#define        _R31    31
+
 #define IMM_L(i)               ((uintptr_t)(i) & 0xffff)
 #define IMM_DS(i)              ((uintptr_t)(i) & 0xfffc)
 #define IMM_DQ(i)              ((uintptr_t)(i) & 0xfff0)