Commit bb3d68c3 authored by David Daney's avatar David Daney Committed by Ralf Baechle

MIPS: Add LDX and LWX instructions to uasm.

Needed by Octeon II optimized TLB handlers.
Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Pachwork: https://patchwork.linux-mips.org/patch/1903/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent cc33ae43
......@@ -72,6 +72,7 @@ enum spec2_op {
enum spec3_op {
ext_op, dextm_op, dextu_op, dext_op,
ins_op, dinsm_op, dinsu_op, dins_op,
lx_op = 0x0a,
bshfl_op = 0x20,
dbshfl_op = 0x24,
rdhwr_op = 0x3b
......@@ -178,6 +179,19 @@ enum mad_func {
nmadd_fp_op = 0x0c, nmsub_fp_op = 0x0e
};
/*
* func field for special3 lx opcodes (Cavium Octeon).
*/
enum lx_func {
lwx_op = 0x00,
lhx_op = 0x04,
lbux_op = 0x06,
ldx_op = 0x08,
lwux_op = 0x10,
lhux_op = 0x14,
lbx_op = 0x16,
};
/*
* Damn ... bitfields depend from byteorder :-(
*/
......
......@@ -119,6 +119,8 @@ Ip_u2u1msbu3(_dinsm);
Ip_u1(_syscall);
Ip_u1u2s3(_bbit0);
Ip_u1u2s3(_bbit1);
Ip_u3u1u2(_lwx);
Ip_u3u1u2(_ldx);
/* Handle labels. */
struct uasm_label {
......@@ -156,6 +158,7 @@ static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
# define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
# define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
#else
# define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
# define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
......@@ -170,6 +173,7 @@ static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
# define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
# define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
#endif
#define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
......
......@@ -68,7 +68,8 @@ enum opcode {
insn_pref, insn_rfe, insn_sc, insn_scd, insn_sd, insn_sll,
insn_sra, insn_srl, insn_rotr, insn_subu, insn_sw, insn_tlbp,
insn_tlbr, insn_tlbwi, insn_tlbwr, insn_xor, insn_xori,
insn_dins, insn_dinsm, insn_syscall, insn_bbit0, insn_bbit1
insn_dins, insn_dinsm, insn_syscall, insn_bbit0, insn_bbit1,
insn_lwx, insn_ldx
};
struct insn {
......@@ -146,6 +147,8 @@ static struct insn insn_table[] __uasminitdata = {
{ insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM},
{ insn_bbit0, M(lwc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
{ insn_bbit1, M(swc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
{ insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD },
{ insn_ldx, M(spec3_op, 0, 0, 0, ldx_op, lx_op), RS | RT | RD },
{ insn_invalid, 0, 0 }
};
......@@ -434,6 +437,8 @@ I_u2u1msb32u3(_dinsm);
I_u1(_syscall);
I_u1u2s3(_bbit0);
I_u1u2s3(_bbit1);
I_u3u1u2(_lwx)
I_u3u1u2(_ldx)
#ifdef CONFIG_CPU_CAVIUM_OCTEON
#include <asm/octeon/octeon.h>
......
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