From 9f822cabe7af7c4b0cc7cdcfbac21bd8a5b3b9c1 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 26 May 2021 12:43:56 +0200
Subject: core/pacman: add patch for different sse2 detection - this should now
 also work on via processors

---
 core/pacman/PKGBUILD                               |  2 +-
 ...686-by-pentium4-when-architecture-is-auto.patch | 46 +++++++++++++++-------
 2 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/core/pacman/PKGBUILD b/core/pacman/PKGBUILD
index 7429bd4b..7706a130 100644
--- a/core/pacman/PKGBUILD
+++ b/core/pacman/PKGBUILD
@@ -24,7 +24,7 @@ if [ ! "${CARCH}" = "i686" ]; then
 fi
 
 source+=('replace-i686-by-pentium4-when-architecture-is-auto.patch')
-sha256sums+=('e8d5f8979c4dfab49e7ac058846f2454b865c1da451e086c23e61034fd820c19')
+sha256sums+=('e5d371dd890ba7916a7f363eea46da363a6b5b8794640f387945458d15323136')
 
 eval "$(
   {
diff --git a/core/pacman/replace-i686-by-pentium4-when-architecture-is-auto.patch b/core/pacman/replace-i686-by-pentium4-when-architecture-is-auto.patch
index 32030586..6c073a4a 100644
--- a/core/pacman/replace-i686-by-pentium4-when-architecture-is-auto.patch
+++ b/core/pacman/replace-i686-by-pentium4-when-architecture-is-auto.patch
@@ -1,24 +1,41 @@
 diff --git a/src/pacman/conf.c b/src/pacman/conf.c
-index 2d8518c4..2e7fac88 100644
+index 0f0c2cfb..87873891 100644
 --- a/src/pacman/conf.c
 +++ b/src/pacman/conf.c
-@@ -308,6 +308,11 @@ int config_set_arch(const char *arch)
- 		struct utsname un;
+@@ -18,6 +18,7 @@
+  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  */
+ 
++#include <cpuid.h>
+ #include <errno.h>
+ #include <limits.h>
+ #include <locale.h> /* setlocale */
+@@ -401,6 +402,12 @@ int config_add_architecture(char *arch)
+ 		char *newarch;
  		uname(&un);
- 		config->arch = strdup(un.machine);
-+		if(strcmp(config->arch, "i686") == 0) {
-+			__builtin_cpu_init();
-+			if (__builtin_cpu_supports("sse2"))
-+				config->arch = strdup("pentium4");
+ 		newarch = strdup(un.machine);
++		if(strcmp(newarch, "i686") == 0) {
++			unsigned int eax, ebx, ecx, edx;
++			__get_cpuid(0, &eax, &ebx, &ecx, &edx);
++			if (ecx & bit_SSE2)
++				newarch = strdup("pentium4");
 +		}
- 	} else {
- 		config->arch = strdup(arch);
+ 		free(arch);
+ 		arch = newarch;
  	}
 diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c
-index 3bb622e6..34aace6c 100644
+index 7e810127..255c6269 100644
 --- a/src/pacman/pacman.c
 +++ b/src/pacman/pacman.c
-@@ -274,8 +274,18 @@ static void setuseragent(void)
+@@ -26,6 +26,7 @@
+ 
+ #include <stdlib.h> /* atoi */
+ #include <stdio.h>
++#include <cpuid.h>
+ #include <ctype.h> /* isspace */
+ #include <limits.h>
+ #include <getopt.h>
+@@ -274,8 +275,19 @@ static void setuseragent(void)
  	int len;
  
  	uname(&un);
@@ -26,8 +43,9 @@ index 3bb622e6..34aace6c 100644
 +	strncpy(machine, un.machine, sizeof machine);
 +	machine[sizeof machine-1] = '\0';
 +	if(strcmp(machine, "i686") == 0) {
-+		__builtin_cpu_init();
-+		if (__builtin_cpu_supports("sse2")) {
++		int eax, ebx, ecx, edx;
++		__cpuid(0, &eax, &ebx, &ecx, %edx);
++		if (ecx & bit_SSE2) {
 +			strncpy(machine, "pentium4", sizeof machine);
 +			machine[sizeof machine-1] = '\0';
 +		}
-- 
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