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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/ms/uplink.pl
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Diffstat (limited to 'openssl/ms/uplink.pl')
-rw-r--r--openssl/ms/uplink.pl204
1 files changed, 204 insertions, 0 deletions
diff --git a/openssl/ms/uplink.pl b/openssl/ms/uplink.pl
new file mode 100644
index 000000000..102400e88
--- /dev/null
+++ b/openssl/ms/uplink.pl
@@ -0,0 +1,204 @@
+#!/usr/bin/env perl
+#
+# For Microsoft CL this is implemented as inline assembler. So that
+# even though this script can generate even Win32 code, we'll be
+# using it primarily to generate Win64 modules. Both IA-64 and AMD64
+# are supported...
+
+# 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=$1; # number of entries in OPENSSL_UplinkTable not including
+ # OPENSSL_UplinkTable[0], which contains this value...
+
+# Idea is to fill the OPENSSL_UplinkTable with pointers to stubs
+# which invoke 'void OPENSSL_Uplink (ULONG_PTR *table,int index)';
+# and then dereference themselves. Latter shall result in endless
+# loop *unless* OPENSSL_Uplink does not replace 'table[index]' with
+# something else, e.g. as 'table[index]=unimplemented;'...
+
+$arg = shift;
+#( defined shift || open STDOUT,">$arg" ) || die "can't open $arg: $!";
+
+if ($arg =~ /win32n/) { ia32nasm(); }
+elsif ($arg =~ /win32/) { ia32masm(); }
+elsif ($arg =~ /coff/) { ia32gas(); }
+elsif ($arg =~ /win64i/ or $arg =~ /ia64/) { ia64ias(); }
+elsif ($arg =~ /win64a/ or $arg =~ /amd64/) { amd64masm(); }
+else { die "nonsense $arg"; }
+
+sub ia32gas() {
+print <<___;
+.text
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+.def .Lazy$i; .scl 3; .type 32; .endef
+.align 4
+.Lazy$i:
+ pushl \$$i
+ pushl \$_OPENSSL_UplinkTable
+ call _OPENSSL_Uplink
+ addl \$8,%esp
+ jmp *(_OPENSSL_UplinkTable+4*$i)
+___
+}
+print <<___;
+.data
+.align 4
+.globl _OPENSSL_UplinkTable
+_OPENSSL_UplinkTable:
+ .long $N
+___
+for ($i=1;$i<=$N;$i++) { print " .long .Lazy$i\n"; }
+}
+
+sub ia32masm() {
+print <<___;
+.386P
+.model FLAT
+
+_DATA SEGMENT
+PUBLIC _OPENSSL_UplinkTable
+_OPENSSL_UplinkTable DD $N ; amount of following entries
+___
+for ($i=1;$i<=$N;$i++) { print " DD FLAT:\$lazy$i\n"; }
+print <<___;
+_DATA ENDS
+
+_TEXT SEGMENT
+EXTRN _OPENSSL_Uplink:NEAR
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+ALIGN 4
+\$lazy$i PROC NEAR
+ push $i
+ push OFFSET FLAT:_OPENSSL_UplinkTable
+ call _OPENSSL_Uplink
+ add esp,8
+ jmp DWORD PTR _OPENSSL_UplinkTable+4*$i
+\$lazy$i ENDP
+___
+}
+print <<___;
+ALIGN 4
+_TEXT ENDS
+END
+___
+}
+
+sub ia32nasm() {
+print <<___;
+SEGMENT .data
+GLOBAL _OPENSSL_UplinkTable
+_OPENSSL_UplinkTable DD $N ; amount of following entries
+___
+for ($i=1;$i<=$N;$i++) { print " DD \$lazy$i\n"; }
+print <<___;
+
+SEGMENT .text
+EXTERN _OPENSSL_Uplink
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+ALIGN 4
+\$lazy$i:
+ push $i
+ push _OPENSSL_UplinkTable
+ call _OPENSSL_Uplink
+ add esp,8
+ jmp [_OPENSSL_UplinkTable+4*$i]
+___
+}
+print <<___;
+ALIGN 4
+END
+___
+}
+
+sub ia64ias () {
+local $V=8; # max number of args uplink functions may accept...
+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#
+
+.text
+.global OPENSSL_Uplink#
+.type OPENSSL_Uplink#,\@function
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+.proc lazy$i
+lazy$i:
+{ .mii; alloc loc0=ar.pfs,$V,3,2,0
+ mov loc1=b0
+ addl loc2=\@ltoff(OPENSSL_UplinkTable#),gp };;
+{ .mmi; ld8 out0=[loc2]
+ mov out1=$i };;
+{ .mib; adds 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#
+___
+}
+}
+
+sub amd64masm() {
+print <<___;
+_DATA SEGMENT
+PUBLIC OPENSSL_UplinkTable
+OPENSSL_UplinkTable DQ $N
+___
+for ($i=1;$i<=$N;$i++) { print " DQ \$lazy$i\n"; }
+print <<___;
+_DATA ENDS
+
+_TEXT SEGMENT
+EXTERN OPENSSL_Uplink:PROC
+___
+for ($i=1;$i<=$N;$i++) {
+print <<___;
+ALIGN 4
+\$lazy$i PROC
+ push r9
+ push r8
+ push rdx
+ push rcx
+ sub rsp,40
+ lea rcx,OFFSET OPENSSL_UplinkTable
+ mov rdx,$i
+ call OPENSSL_Uplink
+ add rsp,40
+ pop rcx
+ pop rdx
+ pop r8
+ pop r9
+ jmp QWORD PTR OPENSSL_UplinkTable+8*$i
+\$lazy$i ENDP
+___
+}
+print <<___;
+_TEXT ENDS
+END
+___
+}
+