Add support for loongarch

Author: wuruilong01

src/libply/Makefile.am

@@ -8,12 +8,13 @@ AM_YFLAGS = -d -Wall
 AM_LFLAGS = --header-file=lexer.h
 
 EXTRA_DIST = grammar.c grammar.h lexer.c lexer.h \
-	arch/aarch64.c \
-	arch/arm.c     \
-	arch/mips.c    \
-	arch/powerpc.c \
-	arch/riscv32.c \
-	arch/riscv64.c \
+	arch/aarch64.c     \
+	arch/arm.c         \
+	arch/loongarch64.c \
+	arch/mips.c        \
+	arch/powerpc.c     \
+	arch/riscv32.c     \
+	arch/riscv64.c     \
 	arch/x86_64.c
 
 BUILT_SOURCES = grammar.h lexer.h

src/libply/arch/loongarch64.c

@@ -0,0 +1,126 @@
+/*
+ * Copyright Tobias Waldekranz <[email protected]>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <assert.h>
+
+#include <ply/internal.h>
+
+#define arch_typedef(_a, _t) {					\
+		.ttype = T_TYPEDEF,				\
+		.tdef = { .name = #_a, .type = _t },		\
+	}
+
+struct type t_s8  = arch_typedef(s8,  &t_schar);
+struct type t_u8  = arch_typedef(u8,  &t_uchar);
+struct type t_s16 = arch_typedef(s16, &t_sshort);
+struct type t_u16 = arch_typedef(u16, &t_ushort);
+struct type t_s32 = arch_typedef(s32, &t_sint);
+struct type t_u32 = arch_typedef(u32, &t_uint);
+struct type t_s64 = arch_typedef(s64, &t_slong);
+struct type t_u64 = arch_typedef(u64, &t_ulong);
+
+static int reg_fprint(struct type *t, FILE *fp, const void *data)
+{
+	return fprintf(fp, "%#lx", *((unsigned long *)data));
+}
+
+struct type t_reg_t = {
+	.ttype = T_TYPEDEF,
+	.tdef = {
+		.name = "reg_t",
+		.type = &t_ulong,
+	},
+
+	.fprint = reg_fprint,
+};
+
+struct tfield f_pt_regs_fields[] = {
+	{ .name = "pc",    .type = &t_reg_t },
+	{ .name = "ra",      .type = &t_reg_t },
+	{ .name = "tp",      .type = &t_reg_t },
+	{ .name = "sp",      .type = &t_reg_t },
+	{ .name = "a0",      .type = &t_reg_t },
+	{ .name = "a1",      .type = &t_reg_t },
+	{ .name = "a2",      .type = &t_reg_t },
+	{ .name = "a3",      .type = &t_reg_t },
+	{ .name = "a4",      .type = &t_reg_t },
+	{ .name = "a5",      .type = &t_reg_t },
+	{ .name = "a6",      .type = &t_reg_t },
+	{ .name = "a7",      .type = &t_reg_t },
+	{ .name = "t0",      .type = &t_reg_t },
+	{ .name = "t1",      .type = &t_reg_t },
+	{ .name = "t2",      .type = &t_reg_t },
+	{ .name = "t3",      .type = &t_reg_t },
+	{ .name = "t4",      .type = &t_reg_t },
+	{ .name = "t5",      .type = &t_reg_t },
+	{ .name = "t6",      .type = &t_reg_t },
+	{ .name = "t7",      .type = &t_reg_t },
+	{ .name = "t8",      .type = &t_reg_t },
+	{ .name = "r21",      .type = &t_reg_t },
+	{ .name = "fp",      .type = &t_reg_t },
+	{ .name = "s0",      .type = &t_reg_t },
+	{ .name = "s1",      .type = &t_reg_t },
+	{ .name = "s2",      .type = &t_reg_t },
+	{ .name = "s3",     .type = &t_reg_t },
+	{ .name = "s4",     .type = &t_reg_t },
+	{ .name = "s5",      .type = &t_reg_t },
+	{ .name = "s6",      .type = &t_reg_t },
+	{ .name = "s7",      .type = &t_reg_t },
+	{ .name = "s8",      .type = &t_reg_t },
+
+	{ .type = NULL }
+};
+
+struct type t_pt_regs = {
+	.ttype = T_STRUCT,
+
+	.sou = {
+		.name = "pt_regs",
+		.fields = f_pt_regs_fields,
+	},
+};
+
+struct type *arch_types[] = {
+	&t_s8, &t_u8,
+	&t_s16, &t_u16,
+	&t_s32, &t_u32,
+	&t_s64, &t_u64,
+	&t_reg_t, &t_pt_regs,
+
+	NULL
+};
+
+const char *arch_register_argument(int num)
+{
+	switch (num) {
+	case 0: return "a0";
+	case 1: return "a1";
+	case 2: return "a2";
+	case 3: return "a3";
+	case 4: return "a4";
+	case 5: return "a5";
+	case 6: return "a6";
+	}
+
+	return NULL;
+}
+
+const char *arch_register_pc(void)
+{
+	return "pc";
+}
+
+const char *arch_register_return(void)
+{
+	return "a0";
+}
+
+__attribute__((constructor))
+static void arch_init(void)
+{
+	type_struct_layout(&t_pt_regs);
+	type_add_list(arch_types);
+}