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authorRich Felker <dalias@aerifal.cx>2012-07-02 22:49:25 -0400
committerRich Felker <dalias@aerifal.cx>2012-07-02 22:49:25 -0400
commite6129e6d836e5f4725d9b14ba7457b32e24adc61 (patch)
treed63d9d8c594139e14cbea7ffbfeeb7e836d0ca5b /src
parent8e26a591d059382cd28b96e457ede2fe07c550c7 (diff)
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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.
Diffstat (limited to 'src')
-rw-r--r--src/signal/arm/sigsetjmp.s13
1 files changed, 13 insertions, 0 deletions
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