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openssl1.0/debian/patches/pic.patch

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From: Debian OpenSSL Team <pkg-openssl-devel@lists.alioth.debian.org>
Date: Sat, 1 Sep 2018 22:20:24 +0200
Subject: pic
---
crypto/des/asm/desboth.pl | 17 ++++++++++++++---
crypto/perlasm/cbc.pl | 24 ++++++++++++++++++++----
crypto/perlasm/x86gas.pl | 16 ++++++++++++++++
crypto/x86cpuid.pl | 10 +++++-----
4 files changed, 55 insertions(+), 12 deletions(-)
diff --git a/crypto/des/asm/desboth.pl b/crypto/des/asm/desboth.pl
index eec00886e4c6..ab6f52452bf3 100644
--- a/crypto/des/asm/desboth.pl
+++ b/crypto/des/asm/desboth.pl
@@ -16,6 +16,11 @@ sub DES_encrypt3
&push("edi");
+ &call (&label("pic_point0"));
+ &set_label("pic_point0");
+ &blindpop("ebp");
+ &add ("ebp", "\$_GLOBAL_OFFSET_TABLE_+[.-" . &label("pic_point0") . "]");
+
&comment("");
&comment("Load the data words");
&mov($L,&DWP(0,"ebx","",0));
@@ -47,15 +52,21 @@ sub DES_encrypt3
&mov(&swtmp(2), (DWC(($enc)?"1":"0")));
&mov(&swtmp(1), "eax");
&mov(&swtmp(0), "ebx");
- &call("DES_encrypt2");
+ &exch("ebx", "ebp");
+ &call("DES_encrypt2\@PLT");
+ &exch("ebx", "ebp");
&mov(&swtmp(2), (DWC(($enc)?"0":"1")));
&mov(&swtmp(1), "edi");
&mov(&swtmp(0), "ebx");
- &call("DES_encrypt2");
+ &exch("ebx", "ebp");
+ &call("DES_encrypt2\@PLT");
+ &exch("ebx", "ebp");
&mov(&swtmp(2), (DWC(($enc)?"1":"0")));
&mov(&swtmp(1), "esi");
&mov(&swtmp(0), "ebx");
- &call("DES_encrypt2");
+ &exch("ebx", "ebp");
+ &call("DES_encrypt2\@PLT");
+ &exch("ebx", "ebp");
&stack_pop(3);
&mov($L,&DWP(0,"ebx","",0));
diff --git a/crypto/perlasm/cbc.pl b/crypto/perlasm/cbc.pl
index 24561e759aba..269fb0b0c69f 100644
--- a/crypto/perlasm/cbc.pl
+++ b/crypto/perlasm/cbc.pl
@@ -122,7 +122,11 @@ sub cbc
&mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call
&mov(&DWP($data_off+4,"esp","",0), "ebx"); #
- &call($enc_func);
+ &call (&label("pic_point0"));
+ &set_label("pic_point0");
+ &blindpop("ebx");
+ &add ("ebx", "\$_GLOBAL_OFFSET_TABLE_+[.-" . &label("pic_point0") . "]");
+ &call("$enc_func\@PLT");
&mov("eax", &DWP($data_off,"esp","",0));
&mov("ebx", &DWP($data_off+4,"esp","",0));
@@ -185,7 +189,11 @@ sub cbc
&mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call
&mov(&DWP($data_off+4,"esp","",0), "ebx"); #
- &call($enc_func);
+ &call (&label("pic_point1"));
+ &set_label("pic_point1");
+ &blindpop("ebx");
+ &add ("ebx", "\$_GLOBAL_OFFSET_TABLE_+[.-" . &label("pic_point1") . "]");
+ &call("$enc_func\@PLT");
&mov("eax", &DWP($data_off,"esp","",0));
&mov("ebx", &DWP($data_off+4,"esp","",0));
@@ -218,7 +226,11 @@ sub cbc
&mov(&DWP($data_off,"esp","",0), "eax"); # put back
&mov(&DWP($data_off+4,"esp","",0), "ebx"); #
- &call($dec_func);
+ &call (&label("pic_point2"));
+ &set_label("pic_point2");
+ &blindpop("ebx");
+ &add ("ebx", "\$_GLOBAL_OFFSET_TABLE_+[.-" . &label("pic_point2") . "]");
+ &call("$dec_func\@PLT");
&mov("eax", &DWP($data_off,"esp","",0)); # get return
&mov("ebx", &DWP($data_off+4,"esp","",0)); #
@@ -261,7 +273,11 @@ sub cbc
&mov(&DWP($data_off,"esp","",0), "eax"); # put back
&mov(&DWP($data_off+4,"esp","",0), "ebx"); #
- &call($dec_func);
+ &call (&label("pic_point3"));
+ &set_label("pic_point3");
+ &blindpop("ebx");
+ &add ("ebx", "\$_GLOBAL_OFFSET_TABLE_+[.-" . &label("pic_point3") . "]");
+ &call("$dec_func\@PLT");
&mov("eax", &DWP($data_off,"esp","",0)); # get return
&mov("ebx", &DWP($data_off+4,"esp","",0)); #
diff --git a/crypto/perlasm/x86gas.pl b/crypto/perlasm/x86gas.pl
index 63b2301fd1f0..176b04d24521 100644
--- a/crypto/perlasm/x86gas.pl
+++ b/crypto/perlasm/x86gas.pl
@@ -163,6 +163,7 @@ sub ::file_end
if ($::macosx) { push (@out,"$tmp,2\n"); }
elsif ($::elf) { push (@out,"$tmp,4\n"); }
else { push (@out,"$tmp\n"); }
+ if ($::elf) { push (@out,".hidden\tOPENSSL_ia32cap_P\n"); }
}
push(@out,$initseg) if ($initseg);
}
@@ -221,8 +222,23 @@ ___
elsif ($::elf)
{ $initseg.=<<___;
.section .init
+___
+ if ($::pic)
+ { $initseg.=<<___;
+ pushl %ebx
+ call .pic_point0
+.pic_point0:
+ popl %ebx
+ addl \$_GLOBAL_OFFSET_TABLE_+[.-.pic_point0],%ebx
+ call $f\@PLT
+ popl %ebx
+___
+ }
+ else
+ { $initseg.=<<___;
call $f
___
+ }
}
elsif ($::coff)
{ $initseg.=<<___; # applies to both Cygwin and Mingw
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl
index 90ed196c09cd..b49d1be8c38c 100644
--- a/crypto/x86cpuid.pl
+++ b/crypto/x86cpuid.pl
@@ -8,6 +8,8 @@ require "x86asm.pl";
for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
+push(@out, ".hidden OPENSSL_ia32cap_P\n");
+
&function_begin("OPENSSL_ia32_cpuid");
&xor ("edx","edx");
&pushf ();
@@ -153,9 +155,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
&set_label("nocpuid");
&function_end("OPENSSL_ia32_cpuid");
-&external_label("OPENSSL_ia32cap_P");
-
-&function_begin_B("OPENSSL_rdtsc","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
+&function_begin_B("OPENSSL_rdtsc");
&xor ("eax","eax");
&xor ("edx","edx");
&picmeup("ecx","OPENSSL_ia32cap_P");
@@ -169,7 +169,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
# 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");
+&function_begin_B("OPENSSL_instrument_halt");
&picmeup("ecx","OPENSSL_ia32cap_P");
&bt (&DWP(0,"ecx"),4);
&jnc (&label("nohalt")); # no TSC
@@ -236,7 +236,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
&ret ();
&function_end_B("OPENSSL_far_spin");
-&function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
+&function_begin_B("OPENSSL_wipe_cpu");
&xor ("eax","eax");
&xor ("edx","edx");
&picmeup("ecx","OPENSSL_ia32cap_P");
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