SPARC64: add icount support (46bb0137) · Commits · SUMMER2020 / students / proj-2021291

target/sparc/translate.c

+110 −1

Original line number	Diff line number	Diff line
		@@ -41,6 +41,8 @@
		#define JUMP_PC 2 /* dynamic pc value which takes only two values
		according to jump_pc[T2] */

		#define DISAS_EXIT DISAS_TARGET_0

		/* global register indexes */
		static TCGv_ptr cpu_regwptr;
		static TCGv cpu_cc_src, cpu_cc_src2, cpu_cc_dst;
		@@ -3400,11 +3402,17 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_const = tcg_const_i32(dc->mem_idx);
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, tick));
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_get_count(cpu_dst, cpu_env, r_tickptr,
		r_const);
		tcg_temp_free_ptr(r_tickptr);
		tcg_temp_free_i32(r_const);
		gen_store_gpr(dc, rd, cpu_dst);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		}
		break;
		case 0x5: /* V9 rdpc */
		@@ -3447,11 +3455,17 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_const = tcg_const_i32(dc->mem_idx);
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, stick));
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_get_count(cpu_dst, cpu_env, r_tickptr,
		r_const);
		tcg_temp_free_ptr(r_tickptr);
		tcg_temp_free_i32(r_const);
		gen_store_gpr(dc, rd, cpu_dst);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		}
		break;
		case 0x19: /* System tick compare */
		@@ -3576,10 +3590,16 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_const = tcg_const_i32(dc->mem_idx);
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, tick));
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_get_count(cpu_tmp0, cpu_env,
		r_tickptr, r_const);
		tcg_temp_free_ptr(r_tickptr);
		tcg_temp_free_i32(r_const);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		}
		break;
		case 5: // tba
		@@ -4385,9 +4405,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_tickptr = tcg_temp_new_ptr();
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, tick));
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_set_limit(r_tickptr,
		cpu_tick_cmpr);
		tcg_temp_free_ptr(r_tickptr);
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_end();
		}
		/* End TB to handle timer interrupt */
		dc->base.is_jmp = DISAS_EXIT;
		}
		break;
		case 0x18: /* System tick */
		@@ -4403,9 +4433,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_tickptr = tcg_temp_new_ptr();
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, stick));
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_set_count(r_tickptr,
		cpu_tmp0);
		tcg_temp_free_ptr(r_tickptr);
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_end();
		}
		/* End TB to handle timer interrupt */
		dc->base.is_jmp = DISAS_EXIT;
		}
		break;
		case 0x19: /* System tick compare */
		@@ -4421,9 +4461,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_tickptr = tcg_temp_new_ptr();
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, stick));
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_set_limit(r_tickptr,
		cpu_stick_cmpr);
		tcg_temp_free_ptr(r_tickptr);
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_end();
		}
		/* End TB to handle timer interrupt */
		dc->base.is_jmp = DISAS_EXIT;
		}
		break;

		@@ -4531,9 +4581,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_tickptr = tcg_temp_new_ptr();
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, tick));
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_set_count(r_tickptr,
		cpu_tmp0);
		tcg_temp_free_ptr(r_tickptr);
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_end();
		}
		/* End TB to handle timer interrupt */
		dc->base.is_jmp = DISAS_EXIT;
		}
		break;
		case 5: // tba
		@@ -4541,7 +4601,13 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		break;
		case 6: // pstate
		save_state(dc);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_wrpstate(cpu_env, cpu_tmp0);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		dc->npc = DYNAMIC_PC;
		break;
		case 7: // tl
		@@ -4551,7 +4617,13 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		dc->npc = DYNAMIC_PC;
		break;
		case 8: // pil
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_wrpil(cpu_env, cpu_tmp0);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		break;
		case 9: // cwp
		gen_helper_wrcwp(cpu_env, cpu_tmp0);
		@@ -4642,9 +4714,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		r_tickptr = tcg_temp_new_ptr();
		tcg_gen_ld_ptr(r_tickptr, cpu_env,
		offsetof(CPUSPARCState, hstick));
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_tick_set_limit(r_tickptr,
		cpu_hstick_cmpr);
		tcg_temp_free_ptr(r_tickptr);
		if (tb_cflags(dc->base.tb) &
		CF_USE_ICOUNT) {
		gen_io_end();
		}
		/* End TB to handle timer interrupt */
		dc->base.is_jmp = DISAS_EXIT;
		}
		break;
		case 6: // hver readonly
		@@ -5265,14 +5347,26 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
		goto priv_insn;
		dc->npc = DYNAMIC_PC;
		dc->pc = DYNAMIC_PC;
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_done(cpu_env);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		goto jmp_insn;
		case 1:
		if (!supervisor(dc))
		goto priv_insn;
		dc->npc = DYNAMIC_PC;
		dc->pc = DYNAMIC_PC;
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_start();
		}
		gen_helper_retry(cpu_env);
		if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
		gen_io_end();
		}
		goto jmp_insn;
		default:
		goto illegal_insn;
		@@ -5822,7 +5916,9 @@ static void sparc_tr_tb_stop(DisasContextBase dcbase, CPUState cs)
		{
		DisasContext *dc = container_of(dcbase, DisasContext, base);

		if (dc->base.is_jmp != DISAS_NORETURN) {
		switch (dc->base.is_jmp) {
		case DISAS_NEXT:
		case DISAS_TOO_MANY:
		if (dc->pc != DYNAMIC_PC &&
		(dc->npc != DYNAMIC_PC && dc->npc != JUMP_PC)) {
		/* static PC and NPC: we can use direct chaining */
		@@ -5834,6 +5930,19 @@ static void sparc_tr_tb_stop(DisasContextBase dcbase, CPUState cs)
		save_npc(dc);
		tcg_gen_exit_tb(NULL, 0);
		}
		break;

		case DISAS_NORETURN:
		break;

		case DISAS_EXIT:
		/* Exit TB */
		save_state(dc);
		tcg_gen_exit_tb(NULL, 0);
		break;

		default:
		g_assert_not_reached();
		}
		}