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-rw-r--r--libc/sysdeps/linux/arc/asm.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arc/asm.h b/libc/sysdeps/linux/arc/asm.h
index f15dff841..f83075ea1 100644
--- a/libc/sysdeps/linux/arc/asm.h
+++ b/libc/sysdeps/linux/arc/asm.h
@@ -7,6 +7,13 @@
#ifndef _ARC_ASM_H
#define _ARC_ASM_H
+/*
+ * Some 16-bit instructions were excluded from the ARCv3 ISA
+ * the following macros are introduced to handle these changes in one place.
+ * This will allow not to change existing ARCv2 code and use 16-bit versions
+ * of instructions for ARCv2 and replace them with 32-bit vesrions for ARCv3
+ */
+
#if defined (__ARC64_ARCH32__)
.macro PUSHR reg
@@ -25,6 +32,22 @@
pop \reg
.endm
+.macro SUBR_S dst,src1,src2
+ sub \dst, \src1, \src2
+.endm
+
+.macro ADDR_S dst,src1,src2
+ add \dst, \src1, \src2
+.endm
+
+.macro ASRR_S dst,src1,src2
+ asr \dst, \src1, \src2
+.endm
+
+.macro ASLR_S dst,src1,src2
+ asl \dst, \src1, \src2
+.endm
+
#elif defined (__ARC64_ARCH64__)
# error ARCv3 64-bit is not supported by uClibc-ng
@@ -47,6 +70,22 @@
pop_s \reg
.endm
+.macro SUBR_S dst,src1,src2
+ sub_s \dst, \src1, \src2
+.endm
+
+.macro ADDR_S dst,src1,src2
+ add_s \dst, \src1, \src2
+.endm
+
+.macro ASRR_S dst,src1,src2
+ asr_s \dst, \src1, \src2
+.endm
+
+.macro ASLR_S dst,src1,src2
+ asl_s \dst, \src1, \src2
+.endm
+
#endif
#endif /* _ARC_ASM_H */