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target/avr: Add DisasContextBase to DisasContext 

Migrate the bstate, tb and singlestep_enabled fields
from DisasContext into the base.

Tested-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Michael Rolnik <mrolnik@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-19 22:37:32 -07:00
parent 77b42a2d53
commit 93d4d5e485
1 changed files with 29 additions and 29 deletions
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58
target/avr/translate.c
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@ -80,7 +80,7 @@ typedef struct DisasContext DisasContext;
/* This is the state at translation time. */
struct DisasContext {
TranslationBlock *tb;
DisasContextBase base;
CPUAVRState *env;
CPUState *cs;
@ -90,8 +90,6 @@ struct DisasContext {
/* Routine used to access memory */
int memidx;
int bstate;
int singlestep;
/*
* some AVR instructions can make the following instruction to be skipped
@ -191,7 +189,7 @@ static bool avr_have_feature(DisasContext *ctx, int feature)
{
if (!avr_feature(ctx->env, feature)) {
gen_helper_unsupported(cpu_env);
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
return false;
}
return true;
@ -1011,13 +1009,13 @@ static void gen_jmp_ez(DisasContext *ctx)
{
tcg_gen_deposit_tl(cpu_pc, cpu_r[30], cpu_r[31], 8, 8);
tcg_gen_or_tl(cpu_pc, cpu_pc, cpu_eind);
ctx->bstate = DISAS_LOOKUP;
ctx->base.is_jmp = DISAS_LOOKUP;
}
static void gen_jmp_z(DisasContext *ctx)
{
tcg_gen_deposit_tl(cpu_pc, cpu_r[30], cpu_r[31], 8, 8);
ctx->bstate = DISAS_LOOKUP;
ctx->base.is_jmp = DISAS_LOOKUP;
}
static void gen_push_ret(DisasContext *ctx, int ret)
@ -1083,9 +1081,9 @@ static void gen_pop_ret(DisasContext *ctx, TCGv ret)
static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
{
TranslationBlock *tb = ctx->tb;
const TranslationBlock *tb = ctx->base.tb;
if (ctx->singlestep == 0) {
if (!ctx->base.singlestep_enabled) {
tcg_gen_goto_tb(n);
tcg_gen_movi_i32(cpu_pc, dest);
tcg_gen_exit_tb(tb, n);
@ -1094,7 +1092,7 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
gen_helper_debug(cpu_env);
tcg_gen_exit_tb(NULL, 0);
}
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
}
/*
@ -1254,7 +1252,7 @@ static bool trans_RET(DisasContext *ctx, arg_RET *a)
{
gen_pop_ret(ctx, cpu_pc);
ctx->bstate = DISAS_LOOKUP;
ctx->base.is_jmp = DISAS_LOOKUP;
return true;
}
@ -1272,7 +1270,7 @@ static bool trans_RETI(DisasContext *ctx, arg_RETI *a)
tcg_gen_movi_tl(cpu_If, 1);
/* Need to return to main loop to re-evaluate interrupts. */
ctx->bstate = DISAS_EXIT;
ctx->base.is_jmp = DISAS_EXIT;
return true;
}
@ -1484,7 +1482,7 @@ static bool trans_BRBC(DisasContext *ctx, arg_BRBC *a)
gen_goto_tb(ctx, 0, ctx->npc + a->imm);
gen_set_label(not_taken);
ctx->bstate = DISAS_CHAIN;
ctx->base.is_jmp = DISAS_CHAIN;
return true;
}
@ -1533,7 +1531,7 @@ static bool trans_BRBS(DisasContext *ctx, arg_BRBS *a)
gen_goto_tb(ctx, 0, ctx->npc + a->imm);
gen_set_label(not_taken);
ctx->bstate = DISAS_CHAIN;
ctx->base.is_jmp = DISAS_CHAIN;
return true;
}
@ -1610,7 +1608,7 @@ static TCGv gen_get_zaddr(void)
*/
static void gen_data_store(DisasContext *ctx, TCGv data, TCGv addr)
{
if (ctx->tb->flags & TB_FLAGS_FULL_ACCESS) {
if (ctx->base.tb->flags & TB_FLAGS_FULL_ACCESS) {
gen_helper_fullwr(cpu_env, data, addr);
} else {
tcg_gen_qemu_st8(data, addr, MMU_DATA_IDX); /* mem[addr] = data */
@ -1619,7 +1617,7 @@ static void gen_data_store(DisasContext *ctx, TCGv data, TCGv addr)
static void gen_data_load(DisasContext *ctx, TCGv data, TCGv addr)
{
if (ctx->tb->flags & TB_FLAGS_FULL_ACCESS) {
if (ctx->base.tb->flags & TB_FLAGS_FULL_ACCESS) {
gen_helper_fullrd(data, cpu_env, addr);
} else {
tcg_gen_qemu_ld8u(data, addr, MMU_DATA_IDX); /* data = mem[addr] */
@ -2793,7 +2791,7 @@ static bool trans_BREAK(DisasContext *ctx, arg_BREAK *a)
#ifdef BREAKPOINT_ON_BREAK
tcg_gen_movi_tl(cpu_pc, ctx->npc - 1);
gen_helper_debug(cpu_env);
ctx->bstate = DISAS_EXIT;
ctx->base.is_jmp = DISAS_EXIT;
#else
/* NOP */
#endif
@ -2819,7 +2817,7 @@ static bool trans_NOP(DisasContext *ctx, arg_NOP *a)
static bool trans_SLEEP(DisasContext *ctx, arg_SLEEP *a)
{
gen_helper_sleep(cpu_env);
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
@ -2850,7 +2848,7 @@ static void translate(DisasContext *ctx)
if (!decode_insn(ctx, opcode)) {
gen_helper_unsupported(cpu_env);
ctx->bstate = DISAS_NORETURN;
ctx->base.is_jmp = DISAS_NORETURN;
}
}
@ -2903,13 +2901,15 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
{
CPUAVRState *env = cs->env_ptr;
DisasContext ctx = {
.tb = tb,
.base.tb = tb,
.base.is_jmp = DISAS_NEXT,
.base.pc_first = tb->pc,
.base.pc_next = tb->pc,
.base.singlestep_enabled = cs->singlestep_enabled,
.cs = cs,
.env = env,
.memidx = 0,
.bstate = DISAS_NEXT,
.skip_cond = TCG_COND_NEVER,
.singlestep = cs->singlestep_enabled,
};
target_ulong pc_start = tb->pc / 2;
int num_insns = 0;
@ -2921,7 +2921,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
*/
max_insns = 1;
}
if (ctx.singlestep) {
if (ctx.base.singlestep_enabled) {
max_insns = 1;
}
@ -2946,7 +2946,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
* b main - sets breakpoint at address 0x00000100 (code)
* b *0x100 - sets breakpoint at address 0x00800100 (data)
*/
if (unlikely(!ctx.singlestep &&
if (unlikely(!ctx.base.singlestep_enabled &&
(cpu_breakpoint_test(cs, OFFSET_CODE + ctx.npc * 2, BP_ANY) ||
cpu_breakpoint_test(cs, OFFSET_DATA + ctx.npc * 2, BP_ANY)))) {
canonicalize_skip(&ctx);
@ -2989,11 +2989,11 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
if (skip_label) {
canonicalize_skip(&ctx);
gen_set_label(skip_label);
if (ctx.bstate == DISAS_NORETURN) {
ctx.bstate = DISAS_CHAIN;
if (ctx.base.is_jmp == DISAS_NORETURN) {
ctx.base.is_jmp = DISAS_CHAIN;
}
}
} while (ctx.bstate == DISAS_NEXT
} while (ctx.base.is_jmp == DISAS_NEXT
&& num_insns < max_insns
&& (ctx.npc - pc_start) * 2 < TARGET_PAGE_SIZE - 4
&& !tcg_op_buf_full());
@ -3004,7 +3004,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
bool nonconst_skip = canonicalize_skip(&ctx);
switch (ctx.bstate) {
switch (ctx.base.is_jmp) {
case DISAS_NORETURN:
assert(!nonconst_skip);
break;
@ -3019,13 +3019,13 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
tcg_gen_movi_tl(cpu_pc, ctx.npc);
/* fall through */
case DISAS_LOOKUP:
if (!ctx.singlestep) {
if (!ctx.base.singlestep_enabled) {
tcg_gen_lookup_and_goto_ptr();
break;
}
/* fall through */
case DISAS_EXIT:
if (ctx.singlestep) {
if (ctx.base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_exit_tb(NULL, 0);