From b6bfae9c24dd369111825590f09f6c50a8559061 Mon Sep 17 00:00:00 2001
From: Sergey Fedorov <barracuda@macos-powerpc.org>
Date: Sun, 1 Sep 2024 19:44:20 +0800
Subject: [PATCH] asm.c: fix ppc asm for macOS

---
 wolfcrypt/src/asm.c | 50 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/wolfcrypt/src/asm.c b/wolfcrypt/src/asm.c
index c36099067..2096ae90d 100644
--- a/wolfcrypt/src/asm.c
+++ b/wolfcrypt/src/asm.c
@@ -529,6 +529,27 @@ __asm__(                           \
 #define LOOP_START \
    mu = c[x] * mp
 
+#ifdef __APPLE__
+
+#define INNERMUL                     \
+__asm__(                             \
+   " mullw    r16,%3,%4       \n\t"  \
+   " mulhwu   r17,%3,%4       \n\t"  \
+   " addc     r16,r16,%2      \n\t"  \
+   " addze    r17,r17         \n\t"  \
+   " addc     %1,r16,%5       \n\t"  \
+   " addze    %0,r17          \n\t"  \
+:"=r"(cy),"=r"(_c[0]):"0"(cy),"r"(mu),"r"(tmpm[0]),"1"(_c[0]):"r16", "r17", "cc"); ++tmpm;
+
+#define PROPCARRY                    \
+__asm__(                             \
+   " addc     %1,%3,%2      \n\t"    \
+   " xor      %0,%2,%2      \n\t"    \
+   " addze    %0,%2         \n\t"    \
+:"=r"(cy),"=r"(_c[0]):"0"(cy),"1"(_c[0]):"cc");
+
+#else
+
 #define INNERMUL                     \
 __asm__(                             \
    " mullw    16,%3,%4       \n\t"   \
@@ -546,6 +567,8 @@ __asm__(                             \
    " addze    %0,%2         \n\t"    \
 :"=r"(cy),"=r"(_c[0]):"0"(cy),"1"(_c[0]):"cc");
 
+#endif
+
 #elif defined(TFM_PPC64)
 
 /* PPC64 */
@@ -555,6 +578,8 @@ __asm__(                             \
 #define LOOP_START \
    mu = c[x] * mp
 
+#ifdef __APPLE__
+
 #define INNERMUL                      \
 __asm__(                              \
    " mulld    r16,%3,%4       \n\t"   \
@@ -576,6 +601,31 @@ __asm__(                              \
    " addze    %0,%0          \n\t"    \
 :"=r"(cy),"=m"(_c[0]):"0"(cy),"1"(_c[0]):"r16","cc");
 
+#else
+
+#define INNERMUL                     \
+__asm__(                             \
+   " mulld    16,%3,%4       \n\t"   \
+   " mulhdu   17,%3,%4       \n\t"   \
+   " addc     16,16,%0       \n\t"   \
+   " addze    17,17          \n\t"   \
+   " ldx      18,0,%1        \n\t"   \
+   " addc     16,16,18       \n\t"   \
+   " addze    %0,17          \n\t"   \
+   " sdx      16,0,%1        \n\t"   \
+:"=r"(cy),"=m"(_c[0]):"0"(cy),"r"(mu),"r"(tmpm[0]),"1"(_c[0]):"16", "17", "18","cc"); ++tmpm;
+
+#define PROPCARRY                    \
+__asm__(                             \
+   " ldx      16,0,%1       \n\t"    \
+   " addc     16,16,%0      \n\t"    \
+   " sdx      16,0,%1       \n\t"    \
+   " xor      %0,%0,%0      \n\t"    \
+   " addze    %0,%0         \n\t"    \
+:"=r"(cy),"=m"(_c[0]):"0"(cy),"1"(_c[0]):"16","cc");
+
+#endif
+
 /******************************************************************/
 
 #elif defined(TFM_AVR32)