From e82854b435ee087e5eb6af926866c9f2d810a5fe Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Wed, 8 Feb 2017 19:26:54 +0100
Subject: [PATCH] abi: support for most basic calling conventions

---
 README.md            |  2 +-
 m4/psi/psi.m4        |  7 +++++++
 src/libffi.c         | 12 ++++++++++++
 src/libjit.c         |  6 ++++++
 src/types/decl_abi.c |  1 -
 5 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 5d20134..3b4c478 100644
--- a/README.md
+++ b/README.md
@@ -225,7 +225,7 @@ extern char *strerror(int errnum);
 
 You may specify a non-standard calling convention in place of `extern`, where `default` and `cdecl` have the same meaning as `extern`.
 
-Additionally recognized calling conventions include: `mscdecl`, `stdcall` and `fastcall`.
+Additionally recognized calling conventions include: `stdcall` and `fastcall`.
 
 ### Constants
 
diff --git a/m4/psi/psi.m4 b/m4/psi/psi.m4
index 6787834..9bb1a4b 100644
--- a/m4/psi/psi.m4
+++ b/m4/psi/psi.m4
@@ -470,6 +470,13 @@ AC_DEFUN(PSI_CHECK_LIBFFI, [
 			AC_MSG_WARN([Could not find libffi, please provide the base install path])
 		fi
 	fi
+	
+	save_CFLAGS=$CFLAGS
+	CFLAGS="$CFLAGS $INCLUDES"
+	AC_CHECK_DECL(FFI_STDCALL,[AC_DEFINE([HAVE_FFI_STDCALL],[1],[ ])],,[#include "ffi.h"])
+	AC_CHECK_DECL(FFI_FASTCALL,[AC_DEFINE([HAVE_FFI_FASTCALL],[1],[ ])],,[#include "ffi.h"])
+	CFLAGS=$save_CFLAGS
+	
 	PHP_CHECK_LIBRARY(ffi, ffi_closure_alloc, [
 		PHP_CHECK_LIBRARY(ffi, ffi_prep_closure_loc, [
 			AC_DEFINE(PSI_HAVE_FFI_PREP_CLOSURE_LOC, 1, [ ])
diff --git a/src/libffi.c b/src/libffi.c
index e859dbd..644b0fe 100644
--- a/src/libffi.c
+++ b/src/libffi.c
@@ -156,6 +156,18 @@ static void psi_ffi_callback(ffi_cif *sig, void *result, void **args, void *data
 }
 
 static inline ffi_abi psi_ffi_abi(const char *convention) {
+	if (FFI_LAST_ABI - 2 != FFI_FIRST_ABI) {
+#ifdef HAVE_FFI_STDCALL
+		if (!strcasecmp(convention, "stdcall")) {
+			return FFI_STDCALL;
+		}
+#endif
+#ifdef HAVE_FFI_FASTCALL
+		if (!strcasecmp(convention, "fastcall")) {
+			return FFI_FASTCALL;
+		}
+#endif
+	}
 	return FFI_DEFAULT_ABI;
 }
 
diff --git a/src/libjit.c b/src/libjit.c
index 338e8a7..a32742a 100644
--- a/src/libjit.c
+++ b/src/libjit.c
@@ -36,6 +36,12 @@ static inline jit_type_t psi_jit_decl_arg_type(struct psi_decl_arg *darg);
 
 static inline jit_abi_t psi_jit_abi(const char *convention)
 {
+	if (!strcasecmp(convention, "stdcall")) {
+		return jit_abi_stdcall;
+	}
+	if (!strcasecmp(convention, "fastcall")) {
+		return jit_abi_fastcall;
+	}
 	return jit_abi_cdecl;
 }
 static inline jit_type_t psi_jit_token_type(token_t t)
diff --git a/src/types/decl_abi.c b/src/types/decl_abi.c
index 3db51e6..60ad161 100644
--- a/src/types/decl_abi.c
+++ b/src/types/decl_abi.c
@@ -56,7 +56,6 @@ static const char * const abi_ccs[] = {
 		"default", /* \                 */
 		"extern",  /*  > - all the same */
 		"cdecl",   /* /                 */
-		"mscdecl",
 		"stdcall",
 		"fastcall",
 };
-- 
2.30.2