From 4c048211f19d587133d4d688f5b1045a0bd4cb15 Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Tue, 22 Jul 2008 08:47:35 +0000
Subject: [PATCH] Split ms/uplink.pl to corresponding platform versions.

---
 ms/uplink-common.pl | 22 ++++++++++++++++
 ms/uplink-ia64.pl   | 50 ++++++++++++++++++++++++++++++++++++
 ms/uplink-x86.pl    | 33 ++++++++++++++++++++++++
 ms/uplink-x86_64.pl | 62 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 167 insertions(+)
 create mode 100755 ms/uplink-common.pl
 create mode 100755 ms/uplink-ia64.pl
 create mode 100755 ms/uplink-x86.pl
 create mode 100755 ms/uplink-x86_64.pl

diff --git a/ms/uplink-common.pl b/ms/uplink-common.pl
new file mode 100755
index 0000000000..1d20e6e03e
--- /dev/null
+++ b/ms/uplink-common.pl
@@ -0,0 +1,22 @@
+#!/usr/bin/env perl
+#
+# pull APPLINK_MAX value from applink.c...
+$applink_c=$0;
+$applink_c=~s|[^/\\]+$||g;
+$applink_c.="applink.c";
+open(INPUT,$applink_c) || die "can't open $applink_c: $!";
+@max=grep {/APPLINK_MAX\s+(\d+)/} <INPUT>;
+close(INPUT);
+($#max==0) or die "can't find APPLINK_MAX in $applink_c";
+
+$max[0]=~/APPLINK_MAX\s+(\d+)/;
+$N=$1;	# number of entries in OPENSSL_UplinkTable not including
+	# OPENSSL_UplinkTable[0], which contains this value...
+
+1;
+
+# Idea is to fill the OPENSSL_UplinkTable with pointers to stubs
+# which invoke 'void OPENSSL_Uplink (ULONG_PTR *table,int index)';
+# and then dereference themselves. Latter shall result in endless
+# loop *unless* OPENSSL_Uplink does not replace 'table[index]' with
+# something else, e.g. as 'table[index]=unimplemented;'...
diff --git a/ms/uplink-ia64.pl b/ms/uplink-ia64.pl
new file mode 100755
index 0000000000..4204c73d58
--- /dev/null
+++ b/ms/uplink-ia64.pl
@@ -0,0 +1,50 @@
+#!/usr/bin/env perl
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}.");
+
+require "uplink-common.pl";
+
+local $V=8;	# max number of args uplink functions may accept...
+my $loc0 = "r".(32+$V);
+print <<___;
+.text
+.global	OPENSSL_Uplink#
+.type	OPENSSL_Uplink#,\@function
+
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+.proc	lazy$i#
+lazy$i:
+	.prologue
+{ .mii;	.save	ar.pfs,$loc0
+	alloc	loc0=ar.pfs,$V,3,2,0
+	.save	b0,loc1
+	mov	loc1=b0
+	addl	loc2=\@ltoff(OPENSSL_UplinkTable#),gp	};;
+	.body
+{ .mmi;	ld8	out0=[loc2]
+	mov	out1=$i					};;
+{ .mib;	add	loc2=8*$i,out0
+	br.call.sptk.many	b0=OPENSSL_Uplink#	};;
+{ .mmi;	ld8	r31=[loc2];;
+	ld8	r30=[r31],8				};;
+{ .mii;	ld8	gp=[r31]
+	mov	b6=r30
+	mov	b0=loc1					};;
+{ .mib;	mov	ar.pfs=loc0
+	br.many	b6					};;
+.endp	lazy$i#
+
+___
+}
+print <<___;
+.data
+.global OPENSSL_UplinkTable#
+OPENSSL_UplinkTable:    data8   $N      // amount of following entries
+___
+for ($i=1;$i<=$N;$i++) {   print "      data8   \@fptr(lazy$i#)\n";   }
+print <<___;
+.size   OPENSSL_UplinkTable,.-OPENSSL_UplinkTable#
+___
diff --git a/ms/uplink-x86.pl b/ms/uplink-x86.pl
new file mode 100755
index 0000000000..0dffc14fcd
--- /dev/null
+++ b/ms/uplink-x86.pl
@@ -0,0 +1,33 @@
+#!/usr/bin/env perl
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC, "${dir}.", "${dir}../crypto/perlasm");
+require "x86asm.pl";
+
+require "uplink-common.pl";
+
+&asm_init($ARGV[0],"uplink-x86");
+
+&external_label("OPENSSL_Uplink");
+&public_label("OPENSSL_UplinkTable");
+
+for ($i=1;$i<=$N;$i++) {
+&function_begin_B("_\$lazy${i}");
+	&lea	("eax",&DWP(&label("OPENSSL_UplinkTable")));
+	&push	("eax");
+	&push	($i);
+	&call	(&label("OPENSSL_Uplink"));
+	&add	("esp",8);
+	&pop	("eax");
+	&jmp_ptr(&DWP(4*$i,"eax"));
+&function_end_B("_\$lazy${i}");
+}
+
+&dataseg();
+&align(4);
+&set_label("OPENSSL_UplinkTable");
+&data_word($N);
+for ($i=1;$i<=$N;$i++) {
+&data_word(&label("_\$lazy${i}"));
+}
+&asm_finish();
diff --git a/ms/uplink-x86_64.pl b/ms/uplink-x86_64.pl
new file mode 100755
index 0000000000..80807ce05b
--- /dev/null
+++ b/ms/uplink-x86_64.pl
@@ -0,0 +1,62 @@
+#!/usr/bin/env perl
+
+$output=shift;
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+open STDOUT,"| $^X ${dir}../crypto/perlasm/x86_64-xlate.pl $output";
+push(@INC,"${dir}.");
+
+require "uplink-common.pl";
+
+$prefix="_lazy";
+
+print <<___;
+.text
+.extern	OPENSSL_Uplink
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+.type	$prefix${i},\@abi-omnipotent
+.align	16
+$prefix${i}:
+	.byte	0x48,0x83,0xEC,0x28	# sub rsp,40
+	mov	%rcx,48(%rsp)
+	mov	%rdx,56(%rsp)
+	mov	%r8,64(%rsp)
+	mov	%r9,72(%rsp)
+	lea	OPENSSL_UplinkTable(%rip),%rcx
+	mov	\$$i,%rdx
+	call	OPENSSL_Uplink
+	mov	48(%rsp),%rcx
+	mov	56(%rsp),%rdx
+	mov	64(%rsp),%r8
+	mov	72(%rsp),%r9
+	add	\$40,%rsp
+	lea	OPENSSL_UplinkTable(%rip),%rax
+	jmp	*8*$i(%rax)
+$prefix${i}_end:
+.size	$prefix${i},.-$prefix${i}
+___
+}
+print <<___;
+.data
+.globl  OPENSSL_UplinkTable
+OPENSSL_UplinkTable:
+        .quad   $N
+___
+for ($i=1;$i<=$N;$i++) {   print "      .quad   $prefix$i\n";   }
+print <<___;
+.section	.pdata
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+	.long	$prefix${i}
+	.long	$prefix${i}_end
+	.long	${prefix}_unwind_info
+___
+}
+print <<___;
+.section	.xdata
+${prefix}_unwind_info:
+	.byte	0x01,0x04,0x01,0x00
+	.byte	0x04,0x42,0x00,0x00
+___
-- 
2.25.1