lang/mono: Fix build on aarch64.

Approved by:	portmgr (build fix blanket)

lang/mono/Makefile

@@ -13,7 +13,7 @@ COMMENT=	Open source implementation of .NET Development Framework
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-ONLY_FOR_ARCHS=		amd64 armv6 armv7 i386 powerpc powerpc64 powerpc64le
+ONLY_FOR_ARCHS=	aarch64 amd64 armv6 armv7 i386 powerpc powerpc64 powerpc64le
 
 BUILD_DEPENDS=	p5-XML-Parser>=0:textproc/p5-XML-Parser \
 		bash:shells/bash \
@@ -65,6 +65,10 @@ OPTIONS_SLAVE=	MONOLITE
 
 .include <bsd.port.options.mk>
 
+.if ${ARCH} == aarch64
+PLIST=	${.CURDIR}/pkg-plist.aarch64
+.endif
+
 .if ${ARCH:Mpowerpc*}
 PLIST+=	${.CURDIR}/pkg-plist.powerpc
 .else

lang/mono/files/patch-configure.ac

@@ -1,6 +1,19 @@
---- configure.ac.orig	2018-08-24 15:19:14 UTC
-+++ configure.ac
-@@ -3298,6 +3298,8 @@ case "$host" in
+--- configure.ac.orig	2018-08-24 17:19:14.000000000 +0200
++++ configure.ac	2021-10-17 17:15:00.295997000 +0200
+@@ -201,6 +201,12 @@ case "$host" in
+ 		libdl=
+ 		libgc_threads=pthreads
+ 		use_sigposix=yes
++		case "$host" in
++		aarch64-*)
++			support_boehm=no
++			with_gc=sgen
++			;;
++		esac
+ 		has_dtrace=yes
+ 		with_sgen_default_concurrent=yes
+ 		;;
+@@ -3298,6 +3304,8 @@ case "$host" in
  			BTLS_PLATFORM=i386
  			;;
  		  openbsd*|freebsd*|kfreebsd-gnu*)
@@ -9,7 +22,7 @@
  		        ;;
  		esac
  		;;
-@@ -3322,6 +3324,8 @@ case "$host" in
+@@ -3322,6 +3330,8 @@ case "$host" in
  			boehm_supported=false
  			;;
  		  openbsd*|freebsd*|kfreebsd-gnu*)
@@ -18,7 +31,7 @@
  			;;
  		  mingw*)
  			;;
-@@ -3355,11 +3359,10 @@ case "$host" in
+@@ -3355,11 +3365,10 @@ case "$host" in
  		INTL="intl"
  		;;
  	macppc-*-openbsd* | powerpc*-*-linux* | powerpc-*-openbsd* | \
@@ -31,3 +44,11 @@
  		else
  			TARGET=POWERPC;
  			CPPFLAGS="$CPPFLAGS -D__mono_ppc__"
+@@ -4425,6 +4434,7 @@ if test "x$enable_btls" = "xyes"; then
+ 		;;
+ 	aarch64)
+ 		btls_arch=aarch64
++		btls_cflags="-march=armv8-a+crypto"
+ 		;;
+ 	android-armv5)
+ 		BTLS_CMAKE_ARGS="-DANDROID_ABI=\"armeabi\" -DANDROID_NATIVE_API_LEVEL=14"

lang/mono/files/patch-external_boringssl_crypto_cpu-aarch64-linux.c

@@ -0,0 +1,42 @@
+--- external/boringssl/crypto/cpu-aarch64-linux.c.orig	2018-08-24 17:17:16 UTC
++++ external/boringssl/crypto/cpu-aarch64-linux.c
+@@ -25,7 +25,32 @@
+ 
+ extern uint32_t OPENSSL_armcap_P;
+ 
++#if defined(__FreeBSD__)
++#include <sys/types.h>
++#include <machine/armreg.h>
++
+ void OPENSSL_cpuid_setup(void) {
++  uint64_t id_aa64isar0;
++
++  id_aa64isar0 = READ_SPECIALREG(id_aa64isar0_el1);
++
++  OPENSSL_armcap_P |= ARMV7_NEON;
++
++  if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) == ID_AA64ISAR0_AES_BASE) {
++    OPENSSL_armcap_P |= ARMV8_AES;
++  }
++  if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) == ID_AA64ISAR0_AES_PMULL) {
++    OPENSSL_armcap_P |= ARMV8_PMULL;
++  }
++  if (ID_AA64ISAR0_SHA1_VAL(id_aa64isar0) == ID_AA64ISAR0_SHA1_BASE) {
++    OPENSSL_armcap_P |= ARMV8_SHA1;
++  }
++  if(ID_AA64ISAR0_SHA2_VAL(id_aa64isar0) == ID_AA64ISAR0_SHA2_BASE) {
++    OPENSSL_armcap_P |= ARMV8_SHA256;
++  }
++}
++#else // linux
++void OPENSSL_cpuid_setup(void) {
+   unsigned long hwcap = getauxval(AT_HWCAP);
+ 
+   /* See /usr/include/asm/hwcap.h on an aarch64 installation for the source of
+@@ -57,5 +82,6 @@ void OPENSSL_cpuid_setup(void) {
+     OPENSSL_armcap_P |= ARMV8_SHA256;
+   }
+ }
++#endif
+ 
+ #endif /* OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP */

lang/mono/files/patch-mono_sgen_sgen-archdep.h

@@ -0,0 +1,11 @@
+--- mono/sgen/sgen-archdep.h.orig	2018-07-11 23:55:34 UTC
++++ mono/sgen/sgen-archdep.h
+@@ -45,7 +45,7 @@
+
+ #elif defined(TARGET_ARM64)
+
+-#ifdef __linux__
++#if defined(__linux__) || defined(__FreeBSD__)
+ #define REDZONE_SIZE    0
+ #elif defined(__APPLE__)
+ #define REDZONE_SIZE	128

lang/mono/files/patch-mono_utils_mono-sigcontext.h

@@ -15,3 +15,17 @@
  #endif
  
  #elif defined(TARGET_ARM)
+@@ -460,6 +460,13 @@ typedef struct ucontext {
+ 	#define UCONTEXT_REG_SP(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__sp)
+ 	#define UCONTEXT_REG_R0(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x [ARMREG_R0])
+ 	#define UCONTEXT_GREGS(ctx) (&(((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x))
++#elif defined(__FreeBSD__)
++#include <ucontext.h>
++	/* https://lists.freebsd.org/pipermail/freebsd-arm/2017-February/015611.html */
++	#define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_elr)
++	#define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_sp)
++	#define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x [ARMREG_R0])
++	#define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x))
+ #else
+ #include <ucontext.h>
+ 	#define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.pc)