1 files changed, 90 insertions, 0 deletions
diff --git a/comm/third_party/libgcrypt/cipher/asm-common-s390x.h b/comm/third_party/libgcrypt/cipher/asm-common-s390x.h
new file mode 100644
index 0000000000..b3a996cd6e
--- /dev/null
+++ b/comm/third_party/libgcrypt/cipher/asm-common-s390x.h
@@ -0,0 +1,90 @@
+/* asm-common-s390x.h  -  Common macros for zSeries assembly
+ *
+ * Copyright (C) 2020 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GCRY_ASM_COMMON_S390X_H
+#define GCRY_ASM_COMMON_S390X_H
+
+#include <config.h>
+
+#ifdef HAVE_GCC_ASM_ELF_DIRECTIVES
+# define ELF(...) __VA_ARGS__
+#else
+# define ELF(...) /*_*/
+#endif
+
+#ifdef HAVE_GCC_ASM_CFI_DIRECTIVES
+/* CFI directives to emit DWARF stack unwinding information. */
+# define CFI_STARTPROC()            .cfi_startproc
+# define CFI_ENDPROC()              .cfi_endproc
+# define CFI_REMEMBER_STATE()       .cfi_remember_state
+# define CFI_RESTORE_STATE()        .cfi_restore_state
+# define CFI_ADJUST_CFA_OFFSET(off) .cfi_adjust_cfa_offset off
+# define CFI_REL_OFFSET(reg,off)    .cfi_rel_offset reg, off
+# define CFI_DEF_CFA_REGISTER(reg)  .cfi_def_cfa_register reg
+# define CFI_REGISTER(ro,rn)        .cfi_register ro, rn
+# define CFI_RESTORE(reg)           .cfi_restore reg
+
+/* CFA expressions are used for pointing CFA and registers to
+ * SP relative offsets. */
+# define DW_REGNO_SP 15
+
+/* Fixed length encoding used for integers for now. */
+# define DW_SLEB128_7BIT(value) \
+	0x00|((value) & 0x7f)
+# define DW_SLEB128_28BIT(value) \
+	0x80|((value)&0x7f), \
+	0x80|(((value)>>7)&0x7f), \
+	0x80|(((value)>>14)&0x7f), \
+	0x00|(((value)>>21)&0x7f)
+
+# define CFI_CFA_ON_STACK(rsp_offs,cfa_depth) \
+	.cfi_escape \
+	  0x0f, /* DW_CFA_def_cfa_expression */ \
+	    DW_SLEB128_7BIT(11), /* length */ \
+	  0x7f, /* DW_OP_breg15, rsp + constant */ \
+	    DW_SLEB128_28BIT(rsp_offs), \
+	  0x06, /* DW_OP_deref */ \
+	  0x23, /* DW_OP_plus_constu */ \
+	    DW_SLEB128_28BIT((cfa_depth)+160)
+
+# define CFI_REG_ON_STACK(regno,rsp_offs) \
+	.cfi_escape \
+	  0x10, /* DW_CFA_expression */ \
+	    DW_SLEB128_7BIT(regno), \
+	    DW_SLEB128_7BIT(5), /* length */ \
+	  0x7f, /* DW_OP_breg15, rsp + constant */ \
+	    DW_SLEB128_28BIT(rsp_offs)
+
+#else
+# define CFI_STARTPROC()
+# define CFI_ENDPROC()
+# define CFI_REMEMBER_STATE()
+# define CFI_RESTORE_STATE()
+# define CFI_ADJUST_CFA_OFFSET(off)
+# define CFI_REL_OFFSET(reg,off)
+# define CFI_DEF_CFA_REGISTER(reg)
+# define CFI_REGISTER(ro,rn)
+# define CFI_RESTORE(reg)
+
+# define CFI_CFA_ON_STACK(rsp_offs,cfa_depth)
+# define CFI_REG_ON_STACK(reg,rsp_offs)
+#endif
+
+#endif /* GCRY_ASM_COMMON_AMD64_H */