Initial implementation of the arch.any.as plugin ##arch

binr/rabin2/rabin2.c

@@ -1,4 +1,4 @@
-/* radare - LGPL - Copyright 2009-2021 - pancake */
+/* radare - LGPL - Copyright 2009-2022 - pancake */
 
 #include <r_main.h>
 

configure-plugins

@@ -39,6 +39,7 @@ help () {
 cfg=./plugins.cfg
 
 if [ ! -f "$cfg" ]; then
+  echo "configure-plugins: Copying dist/plugins-cfg/plugins.def.cfg"
   cp -f dist/plugins-cfg/plugins.def.cfg plugins.cfg
 fi
 

dist/plugins-cfg/plugins.def.cfg

@@ -44,6 +44,7 @@ anal.ppc_cs
 anal.ppc_gnu
 anal.propeller
 anal.pyc
+arch.any_as
 arch.riscv
 anal.riscv_cs
 anal.s390_cs

libr/arch/p/any_as.mk

@@ -0,0 +1,10 @@
+OBJ_ANYAS=p/as/plugin.o
+
+STATIC_OBJ+=${OBJ_ANYAS}
+TARGET_ANYAS=arch_as.${EXT_SO}
+
+ALL_TARGETS+=${TARGET_ANYAS}
+
+${TARGET_ANYAS}: ${OBJ_ANYAS}
+	${CC} ${CFLAGS} $(call libname,arch_as) $(CS_CFLAGS) \
+		-o arch_as.${EXT_SO} ${OBJ_ANYAS} $(CS_LDFLAGS)

libr/arch/p/arch_as.c

@@ -0,0 +1,44 @@
+/* radare2 - BSD - Copyright 2022 - pancake */
+
+#include <r_arch.h>
+#include <r_lib.h>
+}
+
+static bool encode (RArchSession *a, RAnalOp *op, RArchEncodeMask mask) {
+	int len = 0;
+	ut8 *out;
+	char *gas = r_sys_getenv ("RASM2_AS");
+	if (!gas) {
+		gas = strdup ("as");
+	}
+	char *cmd = r_str_newf (
+		"%s /dev/stdin -o /dev/stdout <<__\n"
+		"BITS %i\nORG 0x%"PFMT64x"\n%s\n__",
+		gas, a->bits, a->pc, buf);
+	ut8 *out = (ut8 *)r_sys_cmd_str (cmd, "", &len);
+	if (out) {
+		r_anal_op_setbytes (op, op->addr, out, len);
+		free (out);
+	}
+	op->size = len;
+	free (cmd);
+	return true;
+}
+
+RArchPlugin r_arch_plugin_as = {
+	.name = "as",
+	.desc = "GNU/Clang assembler RASM2_AS or `as`",
+	.license = "LGPL3",
+	.arch = NULL,
+	.bits = R_SYS_BITS_PACK3 (16, 32, 64),
+	.encode = &encode,
+	.endian = R_SYS_ENDIAN_LITTLE | R_:SYS_ENDIAN_BIG,
+};
+
+#ifndef R2_PLUGIN_INCORE
+R_API RLibStruct radare_plugin = {
+	.type = R_LIB_TYPE_ARCH,
+	.data = &r_arch_plugin_as,
+	.version = R2_VERSION
+};
+#endif

libr/arch/p/as/plugin.c

@@ -0,0 +1,44 @@
+/* Copyright (C) 2008-2022 - pancake */
+
+#include <r_arch.h>
+
+static bool as_encode(RArchSession *s, RAnalOp *op, RArchEncodeMask mask) {
+	int len = 0;
+	char *gas = r_sys_getenv ("RASM2_AS");
+	if (!gas) {
+		// TODO: find in PATH
+		gas = strdup ("as");
+	}
+	char *cmd = r_str_newf (
+		"%s -o a.out /dev/stdin <<__\n%s\n__\n"
+		"rabin2 -rO 'd/S/*text' a.out; rm -f a.out\n",
+		gas, op->mnemonic);
+	ut8 *out = (ut8 *)r_sys_cmd_str (cmd, NULL, &len);
+	if (out) {
+		r_anal_op_set_bytes (op, op->addr, out, len);
+		free (out);
+	}
+	op->size = len;
+	free (cmd);
+	return len > 0;
+}
+
+RArchPlugin r_arch_plugin_any_as = {
+	.name = "any.as",
+	.desc = "Uses system gnu/clang 'as' assembler",
+	.author = "pancake",
+	.license = "LGPL3",
+	// TODO: add the "any" architecture to support any, instead of using null
+	.arch = "any", // on purpose because that's a multi-arch plugin
+	.bits = R_SYS_BITS_PACK3 (16, 32, 64),
+	.endian = R_SYS_ENDIAN_LITTLE,
+	.encode = &as_encode,
+};
+
+#ifndef R2_PLUGIN_INCORE
+R_API RLibStruct radare_plugin = {
+	.type = R_LIB_TYPE_ARCH,
+	.data = &r_arch_plugin_any_as,
+	.version = R2_VERSION
+};
+#endif

libr/include/r_arch.h

@@ -256,6 +256,7 @@ extern RArchPlugin r_arch_plugin_v810;
 extern RArchPlugin r_arch_plugin_rsp;
 extern RArchPlugin r_arch_plugin_riscv;
 extern RArchPlugin r_arch_plugin_x86_nz;
+extern RArchPlugin r_arch_plugin_any_as;
 
 #ifdef __cplusplus
 }