[LoongArch64-mono] Part-3:Add method trampolines module for LoongArch64

src/mono/mono/mini/mini-loongarch64-gsharedvt.c

@@ -0,0 +1,92 @@
+/**
+ * \file
+ * gsharedvt support code for loongarch64.
+ *
+ * Authors:
+ *   Qiao Pengcheng (qiaopengcheng@loongson.cn), Liu An(liuan@loongson.cn)
+ *
+ * Copyright (c) 2021 Loongson Technology, Inc
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
+ */
+#include "mini.h"
+#include "mini-loongarch64.h"
+#include "mini-loongarch64-gsharedvt.h"
+#include "aot-runtime.h"
+
+/*
+ * GSHAREDVT
+ */
+#ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
+
+void
+mono_loongarch_gsharedvt_init (void)
+{
+}
+
+gboolean
+mono_arch_gsharedvt_sig_supported (MonoMethodSignature *sig)
+{
+	/*
+	if (sig->ret && is_variable_size (sig->ret))
+		return FALSE;
+	*/
+	return TRUE;
+}
+
+static void
+add_to_map (GPtrArray *map, int src, int dst)
+{
+	g_ptr_array_add (map, GUINT_TO_POINTER (src));
+	g_ptr_array_add (map, GUINT_TO_POINTER (dst));
+}
+
+/*
+ * Slot mapping:
+ * 0..8  - r0..r8
+ * 9..16 - d0..d7
+ * 17..  - stack slots
+ */
+
+static int
+map_reg (int reg)
+{
+	return reg;
+}
+
+static int
+map_freg (int reg)
+{
+	return reg + NUM_GSHAREDVT_ARG_GREGS;
+}
+
+static int
+map_stack_slot (int slot)
+{
+	return slot + NUM_GSHAREDVT_ARG_GREGS + NUM_GSHAREDVT_ARG_FREGS;
+}
+
+static int
+get_arg_slots (ArgInfo *ainfo, int **out_slots)
+{
+	return 0;
+}
+
+/*
+ * mono_arch_get_gsharedvt_call_info:
+ *
+ *   See mini-x86.c for documentation.
+ */
+gpointer
+mono_arch_get_gsharedvt_call_info (MonoMemoryManager *mem_manager, gpointer addr, MonoMethodSignature *normal_sig, MonoMethodSignature *gsharedvt_sig, gboolean gsharedvt_in, gint32 vcall_offset, gboolean calli)
+{
+	return NULL;
+}
+
+#else
+
+void
+mono_loongarch_gsharedvt_init (void)
+{
+}
+
+#endif /* MONO_ARCH_GSHAREDVT_SUPPORTED */

src/mono/mono/mini/mini-loongarch64-gsharedvt.h

@@ -0,0 +1,88 @@
+/**
+ * \file
+ */
+
+#ifndef __MINI_LOONGARCH64_GSHAREDVT_H__
+#define __MINI_LOONGARCH64_GSHAREDVT_H__
+
+/* Argument marshallings for calls between gsharedvt and normal code */
+typedef enum {
+	GSHAREDVT_ARG_NONE = 0,
+	GSHAREDVT_ARG_BYVAL_TO_BYREF = 1,
+	GSHAREDVT_ARG_BYVAL_TO_BYREF_HFAR4 = 2,
+	GSHAREDVT_ARG_BYREF_TO_BYVAL = 3,
+	GSHAREDVT_ARG_BYREF_TO_BYVAL_HFAR4 = 4,
+	GSHAREDVT_ARG_BYREF_TO_BYREF = 5
+} GSharedVtArgMarshal;
+
+/* For arguments passed on the stack on ios */
+typedef enum {
+	GSHAREDVT_ARG_SIZE_NONE = 0,
+	GSHAREDVT_ARG_SIZE_I1 = 1,
+	GSHAREDVT_ARG_SIZE_U1 = 2,
+	GSHAREDVT_ARG_SIZE_I2 = 3,
+	GSHAREDVT_ARG_SIZE_U2 = 4,
+	GSHAREDVT_ARG_SIZE_I4 = 5,
+	GSHAREDVT_ARG_SIZE_U4 = 6,
+} GSharedVtArgSize;
+
+/* Return value marshalling for calls between gsharedvt and normal code */
+typedef enum {
+	GSHAREDVT_RET_NONE = 0,
+	GSHAREDVT_RET_I8 = 1,
+	GSHAREDVT_RET_I1 = 2,
+	GSHAREDVT_RET_U1 = 3,
+	GSHAREDVT_RET_I2 = 4,
+	GSHAREDVT_RET_U2 = 5,
+	GSHAREDVT_RET_I4 = 6,
+	GSHAREDVT_RET_U4 = 7,
+	GSHAREDVT_RET_R8 = 8,
+	GSHAREDVT_RET_R4 = 9,
+	GSHAREDVT_RET_IREGS_1 = 10,
+	GSHAREDVT_RET_IREGS_2 = 11,
+	GSHAREDVT_RET_IREGS_3 = 12,
+	GSHAREDVT_RET_IREGS_4 = 13,
+	GSHAREDVT_RET_IREGS_5 = 14,
+	GSHAREDVT_RET_IREGS_6 = 15,
+	GSHAREDVT_RET_IREGS_7 = 16,
+	GSHAREDVT_RET_IREGS_8 = 17,
+	GSHAREDVT_RET_HFAR8_1 = 18,
+	GSHAREDVT_RET_HFAR8_2 = 19,
+	GSHAREDVT_RET_HFAR8_3 = 20,
+	GSHAREDVT_RET_HFAR8_4 = 21,
+	GSHAREDVT_RET_HFAR4_1 = 22,
+	GSHAREDVT_RET_HFAR4_2 = 23,
+	GSHAREDVT_RET_HFAR4_3 = 24,
+	GSHAREDVT_RET_HFAR4_4 = 25,
+	GSHAREDVT_RET_NUM = 26
+} GSharedVtRetMarshal;
+
+typedef struct {
+	/* Method address to call */
+	gpointer addr;
+	/* The trampoline reads this, so keep the size explicit */
+	int ret_marshal;
+	/* If ret_marshal != NONE, this is the reg of the vret arg, else -1 */
+	/* Equivalent of vret_arg_slot in x86 implementation. */
+	int vret_arg_reg;
+	/* The stack slot where the return value will be stored */
+	int vret_slot;
+	int stack_usage, map_count;
+	/* If not -1, then make a virtual call using this vtable offset */
+	int vcall_offset;
+	/* If 1, make an indirect call to the address in the rgctx reg */
+	int calli;
+	/* Whenever this is a in or an out call */
+	int gsharedvt_in;
+	/* Maps stack slots/registers in the caller to the stack slots/registers in the callee */
+	int map [MONO_ZERO_LEN_ARRAY];
+} GSharedVtCallInfo;
+
+/* Number of argument registers (r0..r8) */
+#define NUM_GSHAREDVT_ARG_GREGS 9
+#define NUM_GSHAREDVT_ARG_FREGS 8
+
+gpointer
+mono_loongarch_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg);
+
+#endif /* __MINI_LOONGARCH64_GSHAREDVT_H__ */

src/mono/mono/mini/tramp-loongarch64-gsharedvt.c

@@ -0,0 +1,59 @@
+/**
+ * \file
+ * gsharedvt support code for loongarch64.
+ *
+ * Authors:
+ *   Qiao Pengcheng (qiaopengcheng@loongson.cn), Liu An(liuan@loongson.cn)
+ *
+ * Copyright (c) 2021 Loongson Technology, Inc
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
+ */
+#include <mono/metadata/abi-details.h>
+
+#include "mini.h"
+#include "mini-loongarch64.h"
+#include "mini-loongarch64-gsharedvt.h"
+#include "mini-runtime.h"
+
+/*
+ * GSHAREDVT
+ */
+#ifdef MONO_ARCH_GSHAREDVT_SUPPORTED
+
+/*
+ * mono_arch_get_gsharedvt_arg_trampoline:
+ *
+ *   See tramp-x86.c for documentation.
+ */
+gpointer
+mono_arch_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr)
+{
+	return NULL;
+}
+
+gpointer
+mono_loongarch_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg)
+{
+	return NULL;
+}
+
+#ifndef DISABLE_JIT
+
+gpointer
+mono_arch_get_gsharedvt_trampoline (MonoTrampInfo **info, gboolean aot)
+{
+	return NULL;
+}
+
+#else
+
+gpointer
+mono_arch_get_gsharedvt_trampoline (MonoTrampInfo **info, gboolean aot)
+{
+	g_assert_not_reached ();
+	return NULL;
+}
+
+#endif
+
+#endif /* MONO_ARCH_GSHAREDVT_SUPPORTED */