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target/sh4: Convert to DisasContextBase 

Signed-off-by: Richard Henderson <rth@twiddle.net>
[aurel32: fix whitespace]
Message-Id: <20170907185057.23421-5-richard.henderson@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2017-09-07 11:50:56 -07:00 committed by Aurelien Jarno
parent 34cf567808
commit 6f1c2af641
1 changed files with 78 additions and 76 deletions
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154
target/sh4/translate.c
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@ -33,19 +33,19 @@
typedef struct DisasContext {
struct TranslationBlock *tb;
target_ulong pc;
uint16_t opcode;
uint32_t tbflags; /* should stay unmodified during the TB translation */
uint32_t envflags; /* should stay in sync with env->flags using TCG ops */
DisasJumpType bstate;
DisasContextBase base;
uint32_t tbflags; /* should stay unmodified during the TB translation */
uint32_t envflags; /* should stay in sync with env->flags using TCG ops */
int memidx;
int gbank;
int fbank;
uint32_t delayed_pc;
int singlestep_enabled;
uint32_t features;
int has_movcal;
uint16_t opcode;
bool has_movcal;
} DisasContext;
#if defined(CONFIG_USER_ONLY)
@ -54,7 +54,7 @@ typedef struct DisasContext {
#define IS_USER(ctx) (!(ctx->tbflags & (1u << SR_MD)))
#endif
/* Target-specific values for ctx->bstate. */
/* Target-specific values for ctx->base.is_jmp. */
/* We want to exit back to the cpu loop for some reason.
Usually this is to recognize interrupts immediately. */
#define DISAS_STOP DISAS_TARGET_0
@ -209,7 +209,7 @@ static void gen_write_sr(TCGv src)
static inline void gen_save_cpu_state(DisasContext *ctx, bool save_pc)
{
if (save_pc) {
tcg_gen_movi_i32(cpu_pc, ctx->pc);
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
}
if (ctx->delayed_pc != (uint32_t) -1) {
tcg_gen_movi_i32(cpu_delayed_pc, ctx->delayed_pc);
@ -227,11 +227,11 @@ static inline bool use_exit_tb(DisasContext *ctx)
static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
{
/* Use a direct jump if in same page and singlestep not enabled */
if (unlikely(ctx->singlestep_enabled || use_exit_tb(ctx))) {
if (unlikely(ctx->base.singlestep_enabled || use_exit_tb(ctx))) {
return false;
}
#ifndef CONFIG_USER_ONLY
return (ctx->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
return (ctx->base.tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
#else
return true;
#endif
@ -242,10 +242,10 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
if (use_goto_tb(ctx, dest)) {
tcg_gen_goto_tb(n);
tcg_gen_movi_i32(cpu_pc, dest);
tcg_gen_exit_tb((uintptr_t)ctx->tb + n);
tcg_gen_exit_tb((uintptr_t)ctx->base.tb + n);
} else {
tcg_gen_movi_i32(cpu_pc, dest);
if (ctx->singlestep_enabled) {
if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(0);
@ -253,7 +253,7 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
tcg_gen_lookup_and_goto_ptr();
}
}
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
}
static void gen_jump(DisasContext * ctx)
@ -263,14 +263,14 @@ static void gen_jump(DisasContext * ctx)
delayed jump as immediate jump are conditinal jumps */
tcg_gen_mov_i32(cpu_pc, cpu_delayed_pc);
tcg_gen_discard_i32(cpu_delayed_pc);
if (ctx->singlestep_enabled) {
if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(0);
} else {
tcg_gen_lookup_and_goto_ptr();
}
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
} else {
gen_goto_tb(ctx, 0, ctx->delayed_pc);
}
@ -300,8 +300,8 @@ static void gen_conditional_jump(DisasContext *ctx, target_ulong dest,
tcg_gen_brcondi_i32(cond_not_taken, cpu_sr_t, 0, l1);
gen_goto_tb(ctx, 0, dest);
gen_set_label(l1);
gen_goto_tb(ctx, 1, ctx->pc + 2);
ctx->bstate = DISAS_NORETURN;
gen_goto_tb(ctx, 1, ctx->base.pc_next + 2);
ctx->base.is_jmp = DISAS_NORETURN;
}
/* Delayed conditional jump (bt or bf) */
@ -324,12 +324,12 @@ static void gen_delayed_conditional_jump(DisasContext * ctx)
gen_jump(ctx);
gen_set_label(l1);
ctx->bstate = DISAS_NEXT;
ctx->base.is_jmp = DISAS_NEXT;
return;
}
tcg_gen_brcondi_i32(TCG_COND_NE, ds, 0, l1);
gen_goto_tb(ctx, 1, ctx->pc + 2);
gen_goto_tb(ctx, 1, ctx->base.pc_next + 2);
gen_set_label(l1);
gen_jump(ctx);
}
@ -466,7 +466,7 @@ static void _decode_opc(DisasContext * ctx)
tcg_gen_mov_i32(cpu_delayed_pc, cpu_spc);
ctx->envflags |= DELAY_SLOT_RTE;
ctx->delayed_pc = (uint32_t) - 1;
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
return;
case 0x0058: /* sets */
tcg_gen_ori_i32(cpu_sr, cpu_sr, (1u << SR_S));
@ -477,23 +477,23 @@ static void _decode_opc(DisasContext * ctx)
case 0xfbfd: /* frchg */
CHECK_FPSCR_PR_0
tcg_gen_xori_i32(cpu_fpscr, cpu_fpscr, FPSCR_FR);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
return;
case 0xf3fd: /* fschg */
CHECK_FPSCR_PR_0
tcg_gen_xori_i32(cpu_fpscr, cpu_fpscr, FPSCR_SZ);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
return;
case 0xf7fd: /* fpchg */
CHECK_SH4A
tcg_gen_xori_i32(cpu_fpscr, cpu_fpscr, FPSCR_PR);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
return;
case 0x0009: /* nop */
return;
case 0x001b: /* sleep */
CHECK_PRIVILEGED
tcg_gen_movi_i32(cpu_pc, ctx->pc + 2);
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next + 2);
gen_helper_sleep(cpu_env);
return;
}
@ -520,23 +520,24 @@ static void _decode_opc(DisasContext * ctx)
/* Detect the start of a gUSA region. If so, update envflags
and end the TB. This will allow us to see the end of the
region (stored in R0) in the next TB. */
if (B11_8 == 15 && B7_0s < 0 && (tb_cflags(ctx->tb) & CF_PARALLEL)) {
if (B11_8 == 15 && B7_0s < 0 &&
(tb_cflags(ctx->base.tb) & CF_PARALLEL)) {
ctx->envflags = deposit32(ctx->envflags, GUSA_SHIFT, 8, B7_0s);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
}
#endif
tcg_gen_movi_i32(REG(B11_8), B7_0s);
return;
case 0x9000: /* mov.w @(disp,PC),Rn */
{
TCGv addr = tcg_const_i32(ctx->pc + 4 + B7_0 * 2);
TCGv addr = tcg_const_i32(ctx->base.pc_next + 4 + B7_0 * 2);
tcg_gen_qemu_ld_i32(REG(B11_8), addr, ctx->memidx, MO_TESW);
tcg_temp_free(addr);
}
return;
case 0xd000: /* mov.l @(disp,PC),Rn */
{
TCGv addr = tcg_const_i32((ctx->pc + 4 + B7_0 * 4) & ~3);
TCGv addr = tcg_const_i32((ctx->base.pc_next + 4 + B7_0 * 4) & ~3);
tcg_gen_qemu_ld_i32(REG(B11_8), addr, ctx->memidx, MO_TESL);
tcg_temp_free(addr);
}
@ -546,13 +547,13 @@ static void _decode_opc(DisasContext * ctx)
return;
case 0xa000: /* bra disp */
CHECK_NOT_DELAY_SLOT
ctx->delayed_pc = ctx->pc + 4 + B11_0s * 2;
ctx->delayed_pc = ctx->base.pc_next + 4 + B11_0s * 2;
ctx->envflags |= DELAY_SLOT;
return;
case 0xb000: /* bsr disp */
CHECK_NOT_DELAY_SLOT
tcg_gen_movi_i32(cpu_pr, ctx->pc + 4);
ctx->delayed_pc = ctx->pc + 4 + B11_0s * 2;
tcg_gen_movi_i32(cpu_pr, ctx->base.pc_next + 4);
ctx->delayed_pc = ctx->base.pc_next + 4 + B11_0s * 2;
ctx->envflags |= DELAY_SLOT;
return;
}
@ -1180,22 +1181,22 @@ static void _decode_opc(DisasContext * ctx)
return;
case 0x8b00: /* bf label */
CHECK_NOT_DELAY_SLOT
gen_conditional_jump(ctx, ctx->pc + 4 + B7_0s * 2, false);
gen_conditional_jump(ctx, ctx->base.pc_next + 4 + B7_0s * 2, false);
return;
case 0x8f00: /* bf/s label */
CHECK_NOT_DELAY_SLOT
tcg_gen_xori_i32(cpu_delayed_cond, cpu_sr_t, 1);
ctx->delayed_pc = ctx->pc + 4 + B7_0s * 2;
ctx->delayed_pc = ctx->base.pc_next + 4 + B7_0s * 2;
ctx->envflags |= DELAY_SLOT_CONDITIONAL;
return;
case 0x8900: /* bt label */
CHECK_NOT_DELAY_SLOT
gen_conditional_jump(ctx, ctx->pc + 4 + B7_0s * 2, true);
gen_conditional_jump(ctx, ctx->base.pc_next + 4 + B7_0s * 2, true);
return;
case 0x8d00: /* bt/s label */
CHECK_NOT_DELAY_SLOT
tcg_gen_mov_i32(cpu_delayed_cond, cpu_sr_t);
ctx->delayed_pc = ctx->pc + 4 + B7_0s * 2;
ctx->delayed_pc = ctx->base.pc_next + 4 + B7_0s * 2;
ctx->envflags |= DELAY_SLOT_CONDITIONAL;
return;
case 0x8800: /* cmp/eq #imm,R0 */
@ -1282,7 +1283,8 @@ static void _decode_opc(DisasContext * ctx)
}
return;
case 0xc700: /* mova @(disp,PC),R0 */
tcg_gen_movi_i32(REG(0), ((ctx->pc & 0xfffffffc) + 4 + B7_0 * 4) & ~3);
tcg_gen_movi_i32(REG(0), ((ctx->base.pc_next & 0xfffffffc) +
4 + B7_0 * 4) & ~3);
return;
case 0xcb00: /* or #imm,R0 */
tcg_gen_ori_i32(REG(0), REG(0), B7_0);
@ -1308,7 +1310,7 @@ static void _decode_opc(DisasContext * ctx)
imm = tcg_const_i32(B7_0);
gen_helper_trapa(cpu_env, imm);
tcg_temp_free(imm);
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
}
return;
case 0xc800: /* tst #imm,R0 */
@ -1376,13 +1378,13 @@ static void _decode_opc(DisasContext * ctx)
switch (ctx->opcode & 0xf0ff) {
case 0x0023: /* braf Rn */
CHECK_NOT_DELAY_SLOT
tcg_gen_addi_i32(cpu_delayed_pc, REG(B11_8), ctx->pc + 4);
tcg_gen_addi_i32(cpu_delayed_pc, REG(B11_8), ctx->base.pc_next + 4);
ctx->envflags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
return;
case 0x0003: /* bsrf Rn */
CHECK_NOT_DELAY_SLOT
tcg_gen_movi_i32(cpu_pr, ctx->pc + 4);
tcg_gen_movi_i32(cpu_pr, ctx->base.pc_next + 4);
tcg_gen_add_i32(cpu_delayed_pc, REG(B11_8), cpu_pr);
ctx->envflags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
@ -1405,7 +1407,7 @@ static void _decode_opc(DisasContext * ctx)
return;
case 0x400b: /* jsr @Rn */
CHECK_NOT_DELAY_SLOT
tcg_gen_movi_i32(cpu_pr, ctx->pc + 4);
tcg_gen_movi_i32(cpu_pr, ctx->base.pc_next + 4);
tcg_gen_mov_i32(cpu_delayed_pc, REG(B11_8));
ctx->envflags |= DELAY_SLOT;
ctx->delayed_pc = (uint32_t) - 1;
@ -1417,7 +1419,7 @@ static void _decode_opc(DisasContext * ctx)
tcg_gen_andi_i32(val, REG(B11_8), 0x700083f3);
gen_write_sr(val);
tcg_temp_free(val);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
}
return;
case 0x4007: /* ldc.l @Rm+,SR */
@ -1429,7 +1431,7 @@ static void _decode_opc(DisasContext * ctx)
gen_write_sr(val);
tcg_temp_free(val);
tcg_gen_addi_i32(REG(B11_8), REG(B11_8), 4);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
}
return;
case 0x0002: /* stc SR,Rn */
@ -1491,7 +1493,7 @@ static void _decode_opc(DisasContext * ctx)
case 0x406a: /* lds Rm,FPSCR */
CHECK_FPU_ENABLED
gen_helper_ld_fpscr(cpu_env, REG(B11_8));
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
return;
case 0x4066: /* lds.l @Rm+,FPSCR */
CHECK_FPU_ENABLED
@ -1501,7 +1503,7 @@ static void _decode_opc(DisasContext * ctx)
tcg_gen_addi_i32(REG(B11_8), REG(B11_8), 4);
gen_helper_ld_fpscr(cpu_env, addr);
tcg_temp_free(addr);
ctx->bstate = DISAS_STOP;
ctx->base.is_jmp = DISAS_STOP;
}
return;
case 0x006a: /* sts FPSCR,Rn */
@ -1565,7 +1567,7 @@ static void _decode_opc(DisasContext * ctx)
TCGLabel *fail = gen_new_label();
TCGLabel *done = gen_new_label();
if ((tb_cflags(ctx->tb) & CF_PARALLEL)) {
if ((tb_cflags(ctx->base.tb) & CF_PARALLEL)) {
TCGv tmp;
tcg_gen_brcond_i32(TCG_COND_NE, REG(B11_8),
@ -1599,7 +1601,7 @@ static void _decode_opc(DisasContext * ctx)
* In a parallel context, we must also save the loaded value
* for use with the cmpxchg that we'll use with movco.l. */
CHECK_SH4A
if ((tb_cflags(ctx->tb) & CF_PARALLEL)) {
if ((tb_cflags(ctx->base.tb) & CF_PARALLEL)) {
TCGv tmp = tcg_temp_new();
tcg_gen_mov_i32(tmp, REG(B11_8));
tcg_gen_qemu_ld_i32(REG(0), REG(B11_8), ctx->memidx, MO_TESL);
@ -1827,7 +1829,7 @@ static void _decode_opc(DisasContext * ctx)
}
#if 0
fprintf(stderr, "unknown instruction 0x%04x at pc 0x%08x\n",
ctx->opcode, ctx->pc);
ctx->opcode, ctx->base.pc_next);
fflush(stderr);
#endif
do_illegal:
@ -1839,7 +1841,7 @@ static void _decode_opc(DisasContext * ctx)
gen_save_cpu_state(ctx, true);
gen_helper_raise_illegal_instruction(cpu_env);
}
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
return;
do_fpu_disabled:
@ -1849,7 +1851,7 @@ static void _decode_opc(DisasContext * ctx)
} else {
gen_helper_raise_fpu_disable(cpu_env);
}
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
return;
}
@ -1901,8 +1903,8 @@ static int decode_gusa(DisasContext *ctx, CPUSH4State *env, int *pmax_insns)
int mv_src, mt_dst, st_src, st_mop;
TCGv op_arg;
uint32_t pc = ctx->pc;
uint32_t pc_end = ctx->tb->cs_base;
uint32_t pc = ctx->base.pc_next;
uint32_t pc_end = ctx->base.tb->cs_base;
int backup = sextract32(ctx->tbflags, GUSA_SHIFT, 8);
int max_insns = (pc_end - pc) / 2;
int i;
@ -2232,7 +2234,7 @@ static int decode_gusa(DisasContext *ctx, CPUSH4State *env, int *pmax_insns)
/* The entire region has been translated. */
ctx->envflags &= ~GUSA_MASK;
ctx->pc = pc_end;
ctx->base.pc_next = pc_end;
return max_insns;
fail:
@ -2245,13 +2247,13 @@ static int decode_gusa(DisasContext *ctx, CPUSH4State *env, int *pmax_insns)
ctx->envflags |= GUSA_EXCLUSIVE;
gen_save_cpu_state(ctx, false);
gen_helper_exclusive(cpu_env);
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
/* We're not executing an instruction, but we must report one for the
purposes of accounting within the TB. We might as well report the
entire region consumed via ctx->pc so that it's immediately available
in the disassembly dump. */
ctx->pc = pc_end;
entire region consumed via ctx->base.pc_next so that it's immediately
available in the disassembly dump. */
ctx->base.pc_next = pc_end;
return 1;
}
#endif
@ -2265,16 +2267,16 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
int max_insns;
pc_start = tb->pc;
ctx.pc = pc_start;
ctx.base.pc_next = pc_start;
ctx.tbflags = (uint32_t)tb->flags;
ctx.envflags = tb->flags & TB_FLAG_ENVFLAGS_MASK;
ctx.bstate = DISAS_NEXT;
ctx.base.is_jmp = DISAS_NEXT;
ctx.memidx = (ctx.tbflags & (1u << SR_MD)) == 0 ? 1 : 0;
/* We don't know if the delayed pc came from a dynamic or static branch,
so assume it is a dynamic branch. */
ctx.delayed_pc = -1; /* use delayed pc from env pointer */
ctx.tb = tb;
ctx.singlestep_enabled = cs->singlestep_enabled;
ctx.base.tb = tb;
ctx.base.singlestep_enabled = cs->singlestep_enabled;
ctx.features = env->features;
ctx.has_movcal = (ctx.tbflags & TB_FLAG_PENDING_MOVCA);
ctx.gbank = ((ctx.tbflags & (1 << SR_MD)) &&
@ -2289,11 +2291,11 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
/* Since the ISA is fixed-width, we can bound by the number
of instructions remaining on the page. */
num_insns = -(ctx.pc | TARGET_PAGE_MASK) / 2;
num_insns = -(ctx.base.pc_next | TARGET_PAGE_MASK) / 2;
max_insns = MIN(max_insns, num_insns);
/* Single stepping means just that. */
if (ctx.singlestep_enabled || singlestep) {
if (ctx.base.singlestep_enabled || singlestep) {
max_insns = 1;
}
@ -2306,22 +2308,22 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
}
#endif
while (ctx.bstate == DISAS_NEXT
while (ctx.base.is_jmp == DISAS_NEXT
&& num_insns < max_insns
&& !tcg_op_buf_full()) {
tcg_gen_insn_start(ctx.pc, ctx.envflags);
tcg_gen_insn_start(ctx.base.pc_next, ctx.envflags);
num_insns++;
if (unlikely(cpu_breakpoint_test(cs, ctx.pc, BP_ANY))) {
if (unlikely(cpu_breakpoint_test(cs, ctx.base.pc_next, BP_ANY))) {
/* We have hit a breakpoint - make sure PC is up-to-date */
gen_save_cpu_state(&ctx, true);
gen_helper_debug(cpu_env);
ctx.bstate = DISAS_NORETURN;
ctx.base.is_jmp = DISAS_NORETURN;
/* The address covered by the breakpoint must be included in
[tb->pc, tb->pc + tb->size) in order to for it to be
properly cleared -- thus we increment the PC here so that
the logic setting tb->size below does the right thing. */
ctx.pc += 2;
ctx.base.pc_next += 2;
break;
}
@ -2329,9 +2331,9 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
gen_io_start();
}
ctx.opcode = cpu_lduw_code(env, ctx.pc);
ctx.opcode = cpu_lduw_code(env, ctx.base.pc_next);
decode_opc(&ctx);
ctx.pc += 2;
ctx.base.pc_next += 2;
}
if (tb_cflags(tb) & CF_LAST_IO) {
gen_io_end();
@ -2342,10 +2344,10 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
ctx.envflags &= ~GUSA_MASK;
}
switch (ctx.bstate) {
switch (ctx.base.is_jmp) {
case DISAS_STOP:
gen_save_cpu_state(&ctx, true);
if (cs->singlestep_enabled) {
if (ctx.base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_exit_tb(0);
@ -2353,7 +2355,7 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
break;
case DISAS_NEXT:
gen_save_cpu_state(&ctx, false);
gen_goto_tb(&ctx, 0, ctx.pc);
gen_goto_tb(&ctx, 0, ctx.base.pc_next);
break;
case DISAS_NORETURN:
break;
@ -2363,7 +2365,7 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
gen_tb_end(tb, num_insns);
tb->size = ctx.pc - pc_start;
tb->size = ctx.base.pc_next - pc_start;
tb->icount = num_insns;
#ifdef DEBUG_DISAS
@ -2371,7 +2373,7 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
&& qemu_log_in_addr_range(pc_start)) {
qemu_log_lock();
qemu_log("IN:\n"); /* , lookup_symbol(pc_start)); */
log_target_disas(cs, pc_start, ctx.pc - pc_start);
log_target_disas(cs, pc_start, ctx.base.pc_next - pc_start);
qemu_log("\n");
qemu_log_unlock();
}