summaryrefslogtreecommitdiff
path: root/newlib/libc/sys/sysvi386/signal.s
diff options
context:
space:
mode:
Diffstat (limited to 'newlib/libc/sys/sysvi386/signal.s')
-rw-r--r--newlib/libc/sys/sysvi386/signal.s16
1 files changed, 16 insertions, 0 deletions
diff --git a/newlib/libc/sys/sysvi386/signal.s b/newlib/libc/sys/sysvi386/signal.s
new file mode 100644
index 00000000000..2418eb02b07
--- /dev/null
+++ b/newlib/libc/sys/sysvi386/signal.s
@@ -0,0 +1,16 @@
+/ According to the iBCS2 book, signal() has 0x30 in %eax, and the address
+/ of a function in %edx. This function is where a signal handler will
+/ return to; it should just adjust the stack pointer, and call $f,$0.
+/ Strange but true.
+ .globl signal
+
+sigret:
+ addl $4, %esp
+ lcall $0xf, $0
+signal:
+ movl $0x30, %eax
+ movl sigret, %edx
+ lcall $7,$0
+ jb _cerror
+/ The iBCS2 book also clears out %eax here, which seems to be broken.
+ ret