summaryrefslogtreecommitdiffstats
path: root/nsprpub/pr/src/md/unix/os_Linux_ppc.s
diff options
context:
space:
mode:
Diffstat (limited to 'nsprpub/pr/src/md/unix/os_Linux_ppc.s')
-rw-r--r--nsprpub/pr/src/md/unix/os_Linux_ppc.s75
1 files changed, 75 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/os_Linux_ppc.s b/nsprpub/pr/src/md/unix/os_Linux_ppc.s
new file mode 100644
index 000000000..a9a83174a
--- /dev/null
+++ b/nsprpub/pr/src/md/unix/os_Linux_ppc.s
@@ -0,0 +1,75 @@
+# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#
+# Based on the programming examples in The PowerPC Architecture:
+# A Specification for A New Family of RISC Processors, 2nd Ed.,
+# Book I, Section E.1, "Synchronization," pp. 249-256, May 1994.
+#
+
+ .section ".text"
+
+#
+# PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val);
+#
+ .align 2
+ .globl _PR_ppc_AtomicIncrement
+ .type _PR_ppc_AtomicIncrement,@function
+_PR_ppc_AtomicIncrement:
+.Lfd1: lwarx 4,0,3
+ addi 0,4,1
+ stwcx. 0,0,3
+ bne- .Lfd1
+ mr 3,0
+ blr
+.Lfe1: .size _PR_ppc_AtomicIncrement,.Lfe1-_PR_ppc_AtomicIncrement
+
+#
+# PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val);
+#
+ .align 2
+ .globl _PR_ppc_AtomicDecrement
+ .type _PR_ppc_AtomicDecrement,@function
+_PR_ppc_AtomicDecrement:
+.Lfd2: lwarx 4,0,3
+ addi 0,4,-1
+ stwcx. 0,0,3
+ bne- .Lfd2
+ mr 3,0
+ blr
+.Lfe2: .size _PR_ppc_AtomicDecrement,.Lfe2-_PR_ppc_AtomicDecrement
+
+#
+# PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
+#
+ .align 2
+ .globl _PR_ppc_AtomicSet
+ .type _PR_ppc_AtomicSet,@function
+_PR_ppc_AtomicSet:
+.Lfd3: lwarx 5,0,3
+ stwcx. 4,0,3
+ bne- .Lfd3
+ mr 3,5
+ blr
+.Lfe3: .size _PR_ppc_AtomicSet,.Lfe3-_PR_ppc_AtomicSet
+
+#
+# PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#
+ .align 2
+ .globl _PR_ppc_AtomicAdd
+ .type _PR_ppc_AtomicAdd,@function
+_PR_ppc_AtomicAdd:
+.Lfd4: lwarx 5,0,3
+ add 0,4,5
+ stwcx. 0,0,3
+ bne- .Lfd4
+ mr 3,0
+ blr
+.Lfe4: .size _PR_ppc_AtomicAdd,.Lfe4-_PR_ppc_AtomicAdd
+
+# Magic indicating no need for an executable stack
+.section .note.GNU-stack, "", @progbits ; .previous