From: Rich Felker <dalias@aerifal.cx>
Date: Tue, 3 Jul 2012 02:49:25 +0000 (-0400)
Subject: fix sigsetjmp on arm (needs asm)
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=e6129e6d836e5f4725d9b14ba7457b32e24adc61;ds=sidebyside

fix sigsetjmp on arm (needs asm)

no idea why gcc refuses to compile the C code to use a tail call, but
it's best to use asm anyway so we don't have to rely on the quality of
the compiler's optimizations for correct code.
---

diff --git a/src/signal/arm/sigsetjmp.s b/src/signal/arm/sigsetjmp.s
new file mode 100644
index 00000000..acb0301e
--- /dev/null
+++ b/src/signal/arm/sigsetjmp.s
@@ -0,0 +1,13 @@
+.global sigsetjmp
+.type sigsetjmp,%function
+sigsetjmp:
+	str a2,[a1,#256]
+	tst a2,a2
+	beq setjmp
+	push {a1,lr}
+	add a3,a1,#260
+	mov a2,#0
+	mov a1,#2
+	bl sigprocmask
+	pop {a1,lr}
+	b setjmp