From 3085a35c6ea406286fecd14593319ca34cf66ad1 Mon Sep 17 00:00:00 2001
From: miod <>
Date: Fri, 20 Jun 2014 15:49:42 +0000
Subject: Remove OPENSSL_instrument_halt and OPENSSL_far_spin, which both might
 have been used under DJGPP in the previous century (if at all).

---
 src/lib/libcrypto/x86cpuid.pl | 70 -------------------------------------------
 1 file changed, 70 deletions(-)

(limited to 'src/lib/libcrypto/x86cpuid.pl')

diff --git a/src/lib/libcrypto/x86cpuid.pl b/src/lib/libcrypto/x86cpuid.pl
index 47df147a83..8a96cda6e6 100644
--- a/src/lib/libcrypto/x86cpuid.pl
+++ b/src/lib/libcrypto/x86cpuid.pl
@@ -143,76 +143,6 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
 
 &external_label("OPENSSL_ia32cap_P");
 
-# This works in Ring 0 only [read DJGPP+MS-DOS+privileged DPMI host],
-# but it's safe to call it on any [supported] 32-bit platform...
-# Just check for [non-]zero return value...
-&function_begin_B("OPENSSL_instrument_halt","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
-	&picmeup("ecx","OPENSSL_ia32cap_P");
-	&bt	(&DWP(0,"ecx"),4);
-	&jnc	(&label("nohalt"));	# no TSC
-
-	&data_word(0x9058900e);		# push %cs; pop %eax
-	&and	("eax",3);
-	&jnz	(&label("nohalt"));	# not enough privileges
-
-	&pushf	();
-	&pop	("eax");
-	&bt	("eax",9);
-	&jnc	(&label("nohalt"));	# interrupts are disabled
-
-	&rdtsc	();
-	&push	("edx");
-	&push	("eax");
-	&halt	();
-	&rdtsc	();
-
-	&sub	("eax",&DWP(0,"esp"));
-	&sbb	("edx",&DWP(4,"esp"));
-	&add	("esp",8);
-	&ret	();
-
-&set_label("nohalt");
-	&xor	("eax","eax");
-	&xor	("edx","edx");
-	&ret	();
-&function_end_B("OPENSSL_instrument_halt");
-
-# Essentially there is only one use for this function. Under DJGPP:
-#
-#	#include <go32.h>
-#	...
-#	i=OPENSSL_far_spin(_dos_ds,0x46c);
-#	...
-# to obtain the number of spins till closest timer interrupt.
-
-&function_begin_B("OPENSSL_far_spin");
-	&pushf	();
-	&pop	("eax")
-	&bt	("eax",9);
-	&jnc	(&label("nospin"));	# interrupts are disabled
-
-	&mov	("eax",&DWP(4,"esp"));
-	&mov	("ecx",&DWP(8,"esp"));
-	&data_word (0x90d88e1e);	# push %ds, mov %eax,%ds
-	&xor	("eax","eax");
-	&mov	("edx",&DWP(0,"ecx"));
-	&jmp	(&label("spin"));
-
-	&align	(16);
-&set_label("spin");
-	&inc	("eax");
-	&cmp	("edx",&DWP(0,"ecx"));
-	&je	(&label("spin"));
-
-	&data_word (0x1f909090);	# pop	%ds
-	&ret	();
-
-&set_label("nospin");
-	&xor	("eax","eax");
-	&xor	("edx","edx");
-	&ret	();
-&function_end_B("OPENSSL_far_spin");
-
 &function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
 	&xor	("eax","eax");
 	&xor	("edx","edx");
-- 
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