LoongArch: Add some instruction opcodes and formats

According to the "Table of Instruction Encoding" in LoongArch Reference
Manual [1], add some instruction opcodes and formats which are used in
the BPF JIT for LoongArch.

[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#table-of-instruction-encoding

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

diff --git a/arch/loongarch/include/asm/inst.h b/arch/loongarch/include/asm/inst.h
index 7b3750907ad1034ee73ab5d98c2e4c8c0b4b4abd..63df7efff276668448b7847c125b35bef9e7d23f 100644 (file)
--- a/arch/loongarch/include/asm/inst.h
+++ b/arch/loongarch/include/asm/inst.h
@@ -8,6 +8,8 @@
 #include <linux/types.h>
 #include <asm/asm.h>
 
+#define INSN_BREAK             0x002a0000
+
 #define ADDR_IMMMASK_LU52ID    0xFFF0000000000000
 #define ADDR_IMMMASK_LU32ID    0x000FFFFF00000000
 #define ADDR_IMMMASK_ADDU16ID  0x00000000FFFF0000
@@ -18,9 +20,16 @@
 
 #define ADDR_IMM(addr, INSN)   ((addr & ADDR_IMMMASK_##INSN) >> ADDR_IMMSHIFT_##INSN)
 
+enum reg0i26_op {
+       b_op            = 0x14,
+       bl_op           = 0x15,
+};
+
 enum reg1i20_op {
        lu12iw_op       = 0x0a,
        lu32id_op       = 0x0b,
+       pcaddu12i_op    = 0x0e,
+       pcaddu18i_op    = 0x0f,
 };
 
 enum reg1i21_op {
@@ -28,10 +37,34 @@ enum reg1i21_op {
        bnez_op         = 0x11,
 };
 
+enum reg2_op {
+       revb2h_op       = 0x0c,
+       revb4h_op       = 0x0d,
+       revb2w_op       = 0x0e,
+       revbd_op        = 0x0f,
+       revh2w_op       = 0x10,
+       revhd_op        = 0x11,
+};
+
+enum reg2i5_op {
+       slliw_op        = 0x81,
+       srliw_op        = 0x89,
+       sraiw_op        = 0x91,
+};
+
+enum reg2i6_op {
+       sllid_op        = 0x41,
+       srlid_op        = 0x45,
+       sraid_op        = 0x49,
+};
+
 enum reg2i12_op {
        addiw_op        = 0x0a,
        addid_op        = 0x0b,
        lu52id_op       = 0x0c,
+       andi_op         = 0x0d,
+       ori_op          = 0x0e,
+       xori_op         = 0x0f,
        ldb_op          = 0xa0,
        ldh_op          = 0xa1,
        ldw_op          = 0xa2,
@@ -40,6 +73,20 @@ enum reg2i12_op {
        sth_op          = 0xa5,
        stw_op          = 0xa6,
        std_op          = 0xa7,
+       ldbu_op         = 0xa8,
+       ldhu_op         = 0xa9,
+       ldwu_op         = 0xaa,
+};
+
+enum reg2i14_op {
+       llw_op          = 0x20,
+       scw_op          = 0x21,
+       lld_op          = 0x22,
+       scd_op          = 0x23,
+       ldptrw_op       = 0x24,
+       stptrw_op       = 0x25,
+       ldptrd_op       = 0x26,
+       stptrd_op       = 0x27,
 };
 
 enum reg2i16_op {
@@ -52,6 +99,71 @@ enum reg2i16_op {
        bgeu_op         = 0x1b,
 };
 
+enum reg2bstrd_op {
+       bstrinsd_op     = 0x2,
+       bstrpickd_op    = 0x3,
+};
+
+enum reg3_op {
+       addw_op         = 0x20,
+       addd_op         = 0x21,
+       subw_op         = 0x22,
+       subd_op         = 0x23,
+       nor_op          = 0x28,
+       and_op          = 0x29,
+       or_op           = 0x2a,
+       xor_op          = 0x2b,
+       orn_op          = 0x2c,
+       andn_op         = 0x2d,
+       sllw_op         = 0x2e,
+       srlw_op         = 0x2f,
+       sraw_op         = 0x30,
+       slld_op         = 0x31,
+       srld_op         = 0x32,
+       srad_op         = 0x33,
+       mulw_op         = 0x38,
+       mulhw_op        = 0x39,
+       mulhwu_op       = 0x3a,
+       muld_op         = 0x3b,
+       mulhd_op        = 0x3c,
+       mulhdu_op       = 0x3d,
+       divw_op         = 0x40,
+       modw_op         = 0x41,
+       divwu_op        = 0x42,
+       modwu_op        = 0x43,
+       divd_op         = 0x44,
+       modd_op         = 0x45,
+       divdu_op        = 0x46,
+       moddu_op        = 0x47,
+       ldxb_op         = 0x7000,
+       ldxh_op         = 0x7008,
+       ldxw_op         = 0x7010,
+       ldxd_op         = 0x7018,
+       stxb_op         = 0x7020,
+       stxh_op         = 0x7028,
+       stxw_op         = 0x7030,
+       stxd_op         = 0x7038,
+       ldxbu_op        = 0x7040,
+       ldxhu_op        = 0x7048,
+       ldxwu_op        = 0x7050,
+       amswapw_op      = 0x70c0,
+       amswapd_op      = 0x70c1,
+       amaddw_op       = 0x70c2,
+       amaddd_op       = 0x70c3,
+       amandw_op       = 0x70c4,
+       amandd_op       = 0x70c5,
+       amorw_op        = 0x70c6,
+       amord_op        = 0x70c7,
+       amxorw_op       = 0x70c8,
+       amxord_op       = 0x70c9,
+};
+
+enum reg3sa2_op {
+       alslw_op        = 0x02,
+       alslwu_op       = 0x03,
+       alsld_op        = 0x16,
+};
+
 struct reg0i26_format {
        unsigned int immediate_h : 10;
        unsigned int immediate_l : 16;
@@ -71,6 +183,26 @@ struct reg1i21_format {
        unsigned int opcode : 6;
 };
 
+struct reg2_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int opcode : 22;
+};
+
+struct reg2i5_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int immediate : 5;
+       unsigned int opcode : 17;
+};
+
+struct reg2i6_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int immediate : 6;
+       unsigned int opcode : 16;
+};
+
 struct reg2i12_format {
        unsigned int rd : 5;
        unsigned int rj : 5;
@@ -78,6 +210,13 @@ struct reg2i12_format {
        unsigned int opcode : 10;
 };
 
+struct reg2i14_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int immediate : 14;
+       unsigned int opcode : 8;
+};
+
 struct reg2i16_format {
        unsigned int rd : 5;
        unsigned int rj : 5;
@@ -85,13 +224,43 @@ struct reg2i16_format {
        unsigned int opcode : 6;
 };
 
+struct reg2bstrd_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int lsbd : 6;
+       unsigned int msbd : 6;
+       unsigned int opcode : 10;
+};
+
+struct reg3_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int rk : 5;
+       unsigned int opcode : 17;
+};
+
+struct reg3sa2_format {
+       unsigned int rd : 5;
+       unsigned int rj : 5;
+       unsigned int rk : 5;
+       unsigned int immediate : 2;
+       unsigned int opcode : 15;
+};
+
 union loongarch_instruction {
        unsigned int word;
-       struct reg0i26_format reg0i26_format;
-       struct reg1i20_format reg1i20_format;
-       struct reg1i21_format reg1i21_format;
-       struct reg2i12_format reg2i12_format;
-       struct reg2i16_format reg2i16_format;
+       struct reg0i26_format   reg0i26_format;
+       struct reg1i20_format   reg1i20_format;
+       struct reg1i21_format   reg1i21_format;
+       struct reg2_format      reg2_format;
+       struct reg2i5_format    reg2i5_format;
+       struct reg2i6_format    reg2i6_format;
+       struct reg2i12_format   reg2i12_format;
+       struct reg2i14_format   reg2i14_format;
+       struct reg2i16_format   reg2i16_format;
+       struct reg2bstrd_format reg2bstrd_format;
+       struct reg3_format      reg3_format;
+       struct reg3sa2_format   reg3sa2_format;
 };
 
 #define LOONGARCH_INSN_SIZE    sizeof(union loongarch_instruction)