@@ -21,6 +21,8 @@ DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_1(dbitswap, TCG_CALL_NO_RWG_SE, tl, tl)
#endif
+DEF_HELPER_3(crc32, tl, tl, tl, i32)
+DEF_HELPER_3(crc32c, tl, tl, tl, i32)
DEF_HELPER_FLAGS_4(rotx, TCG_CALL_NO_RWG_SE, tl, tl, i32, i32, i32)
/* microMIPS functions */
@@ -7,6 +7,7 @@ mips_ss.add(files(
'gdbstub.c',
'msa.c',
))
+mips_ss.add(zlib)
if have_system
subdir('sysemu')
@@ -25,6 +25,8 @@
#include "exec/exec-all.h"
#include "exec/memop.h"
#include "fpu_helper.h"
+#include "qemu/crc32c.h"
+#include <zlib.h>
static inline target_ulong bitswap(target_ulong v)
{
@@ -143,6 +145,30 @@ target_ulong helper_rotx(target_ulong rs, uint32_t shift, uint32_t shiftx,
return (int64_t)(int32_t)(uint32_t)tmp5;
}
+/* these crc32 functions are based on target/arm/helper-a64.c */
+target_ulong helper_crc32(target_ulong val, target_ulong m, uint32_t sz)
+{
+ uint8_t buf[8];
+ target_ulong mask = ((sz * 8) == 64) ?
+ (target_ulong) -1ULL :
+ ((1ULL << (sz * 8)) - 1);
+
+ m &= mask;
+ stq_le_p(buf, m);
+ return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_crc32c(target_ulong val, target_ulong m, uint32_t sz)
+{
+ uint8_t buf[8];
+ target_ulong mask = ((sz * 8) == 64) ?
+ (target_ulong) -1ULL :
+ ((1ULL << (sz * 8)) - 1);
+ m &= mask;
+ stq_le_p(buf, m);
+ return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff);
+}
+
void helper_fork(target_ulong arg1, target_ulong arg2)
{
/*
@@ -430,6 +430,7 @@ enum {
OPC_LWE = 0x2F | OPC_SPECIAL3,
/* R6 */
+ OPC_CRC32 = 0x0F | OPC_SPECIAL3,
R6_OPC_PREF = 0x35 | OPC_SPECIAL3,
R6_OPC_CACHE = 0x25 | OPC_SPECIAL3,
R6_OPC_LL = 0x36 | OPC_SPECIAL3,
@@ -13691,6 +13692,30 @@ static void decode_opc_special2_legacy(CPUMIPSState *env, DisasContext *ctx)
}
}
+static void gen_crc32(DisasContext *ctx, int rd, int rs, int rt, int sz,
+ int crc32c)
+{
+ TCGv t0;
+ TCGv t1;
+ TCGv_i32 tsz = tcg_constant_i32(1 << sz);
+ if (rd == 0) {
+ /* Treat as NOP. */
+ return;
+ }
+ t0 = tcg_temp_new();
+ t1 = tcg_temp_new();
+
+ gen_load_gpr(t0, rt);
+ gen_load_gpr(t1, rs);
+
+ if (crc32c) {
+ gen_helper_crc32c(cpu_gpr[rd], t0, t1, tsz);
+ } else {
+ gen_helper_crc32(cpu_gpr[rd], t0, t1, tsz);
+ }
+
+}
+
static void decode_opc_special3_r6(CPUMIPSState *env, DisasContext *ctx)
{
int rs, rt, rd, sa;
@@ -13705,6 +13730,17 @@ static void decode_opc_special3_r6(CPUMIPSState *env, DisasContext *ctx)
op1 = MASK_SPECIAL3(ctx->opcode);
switch (op1) {
+ case OPC_CRC32:
+ if (unlikely(!ctx->crcp) ||
+ unlikely((extract32(ctx->opcode, 6, 2) == 3) &&
+ (!(ctx->hflags & MIPS_HFLAG_64))) ||
+ unlikely((extract32(ctx->opcode, 8, 3) >= 2))) {
+ gen_reserved_instruction(ctx);
+ }
+ gen_crc32(ctx, rt, rs, rt,
+ extract32(ctx->opcode, 6, 2),
+ extract32(ctx->opcode, 8, 3));
+ break;
case R6_OPC_PREF:
if (rt >= 24) {
/* hint codes 24-31 are reserved and signal RI */
@@ -15346,6 +15382,7 @@ static void mips_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
ctx->abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1;
ctx->mi = (env->CP0_Config5 >> CP0C5_MI) & 1;
ctx->gi = (env->CP0_Config5 >> CP0C5_GI) & 3;
+ ctx->crcp = (env->CP0_Config5 >> CP0C5_CRCP) & 1;
restore_cpu_state(env, ctx);
#ifdef CONFIG_USER_ONLY
ctx->mem_idx = MIPS_HFLAG_UM;
@@ -51,6 +51,7 @@ typedef struct DisasContext {
bool abs2008;
bool mi;
int gi;
+ bool crcp;
} DisasContext;
#define DISAS_STOP DISAS_TARGET_0