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From e4aa2c34d526c108dd8fa37448b19bdb38de52c9 Mon Sep 17 00:00:00 2001
From: Mike Gilbert <floppym@gentoo.org>
Date: Thu, 24 May 2018 10:48:55 -0400
Subject: [PATCH] basic: fix raw_clone() on 32-bit sparc
The clone syscall uses the same semantics as on 64-bit. The trap number
for syscall entry is different.
Bug: https://bugs.gentoo.org/656368
---
src/basic/raw-clone.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/basic/raw-clone.h b/src/basic/raw-clone.h
index d8a68663180..d35540903ab 100644
--- a/src/basic/raw-clone.h
+++ b/src/basic/raw-clone.h
@@ -39,10 +39,10 @@ static inline pid_t raw_clone(unsigned long flags) {
/* On s390/s390x and cris the order of the first and second arguments
* of the raw clone() system call is reversed. */
ret = (pid_t) syscall(__NR_clone, NULL, flags);
-#elif defined(__sparc__) && defined(__arch64__)
+#elif defined(__sparc__)
{
/**
- * sparc64 always returns the other process id in %o0, and
+ * sparc always returns the other process id in %o0, and
* a boolean flag whether this is the child or the parent in
* %o1. Inline assembly is needed to get the flag returned
* in %o1.
@@ -52,7 +52,11 @@ static inline pid_t raw_clone(unsigned long flags) {
asm volatile("mov %2, %%g1\n\t"
"mov %3, %%o0\n\t"
"mov 0 , %%o1\n\t"
+#if defined(__arch64__)
"t 0x6d\n\t"
+#else
+ "t 0x10\n\t"
+#endif
"mov %%o1, %0\n\t"
"mov %%o0, %1" :
"=r"(in_child), "=r"(child_pid) :
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