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unicorn/qemu/include/exec/gen-icount.h

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import
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#ifndef GEN_ICOUNT_H
Clean up decorations and whitespace around header guards Cleaned up with scripts/clean-header-guards.pl. Backports commit 175de52487ce0b0c78daa4cdf41a5a465a168a25 from qemu
2018-02-25 09:25:59 +00:00
#define GEN_ICOUNT_H
import
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#include "qemu/timer.h"
/* Helpers for instruction counting code generation. */
tcg: Dynamically allocate TCGOps With no fixed array allocation, we can't overflow a buffer. This will be important as optimizations related to host vectors may expand the number of ops used. Use QTAILQ to link the ops together. Backports commit 15fa08f8451babc88d733bd411d4c94976f9d0f8 from qemu
2018-03-05 21:01:13 +00:00
//static TCGOp *icount_start_insn;
import
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gen-icount: check cflags instead of use_icount global Backports commit cd42d5b23691ad73edfd6dbcfc935a960a9c5a65 from qemu
2018-03-04 19:25:10 +00:00
static inline void gen_tb_start(TCGContext *tcg_ctx, TranslationBlock *tb)
import
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{
gen-icount: Synchronize with qemu
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//TCGv_i32 count, imm;
import
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TCGv_i32 flag;
tcg_ctx->exitreq_label = gen_new_label(tcg_ctx);
flag = tcg_temp_new_i32(tcg_ctx);
tcg_gen_ld_i32(tcg_ctx, flag, tcg_ctx->cpu_env,
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
offsetof(CPUState, tcg_exit_req) - offsetof(ArchCPU, env));
import
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tcg_gen_brcondi_i32(tcg_ctx, TCG_COND_NE, flag, 0, tcg_ctx->exitreq_label);
tcg_temp_free_i32(tcg_ctx, flag);
#if 0
gen-icount: Synchronize with qemu
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tcg_ctx->exitreq_label = gen_new_label();
if (tb_cflags(tb) & CF_USE_ICOUNT) {
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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count = tcg_temp_local_new_i32(tcg_ctx);
gen-icount: Synchronize with qemu
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} else {
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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count = tcg_temp_new_i32(tcg_ctx);
tcg: Put opcodes in a linked list The previous setup required ops and args to be completely sequential, and was error prone when it came to both iteration and optimization.
2018-02-09 14:54:01 +00:00
}
import
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gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
2019-04-22 10:17:09 +00:00
tcg_gen_ld_i32(tcg_ctx, count, tcg_ctx->cpu_env,
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
offsetof(ArchCPU, neg.icount_decr.u32) -
offsetof(ArchCPU, env));
gen-icount: Synchronize with qemu
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if (tb_cflags(tb) & CF_USE_ICOUNT) {
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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imm = tcg_temp_new_i32(tcg_ctx);
gen-icount: Synchronize with qemu
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/* We emit a movi with a dummy immediate argument. Keep the insn index
* of the movi so that we later (when we know the actual insn count)
* can update the immediate argument with the actual insn count. */
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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tcg_gen_movi_i32(tcg_ctx, imm, 0xdeadbeef);
icount_start_insn = tcg_last_op(tcg_ctx);
gen-icount: Synchronize with qemu
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gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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tcg_gen_sub_i32(tcg_ctx, count, count, imm);
tcg_temp_free_i32(tcg_ctx, imm);
gen-icount: Synchronize with qemu
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}
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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tcg_gen_brcondi_i32(tcg_ctx, TCG_COND_LT, count, 0, tcg_ctx->exitreq_label);
gen-icount: Synchronize with qemu
2019-04-22 09:52:41 +00:00
if (tb_cflags(tb) & CF_USE_ICOUNT) {
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
2019-04-22 10:17:09 +00:00
tcg_gen_st16_i32(tcg_ctx, count, tcg_ctx, cpu_env,
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
offsetof(ArchCPU, neg.icount_decr.u16.low) -
offsetof(ArchCPU, env));
gen-icount: Synchronize with qemu
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}
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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tcg_temp_free_i32(tcg_ctx, count);
import
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#endif
}
static inline void gen_tb_end(TCGContext *tcg_ctx, TranslationBlock *tb, int num_insns)
{
#if 0
gen-icount: Synchronize with qemu
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if (tb_cflags(tb) & CF_USE_ICOUNT) {
gen-icount: Use tcg_set_insn_param Use tcg_set_insn_param() instead of directly accessing internal tcg data structures to update an insn param. Backports commit 25caa94c4a26daaab1e65c6d887e2972aeb5749e from qemu
2018-02-24 01:01:15 +00:00
/* Update the num_insn immediate parameter now that we know
* the actual insn count. */
gen-icount: Use tcg_ctx where applicable in commented out code If this is ever used in the future, it'll already be able to be used.
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tcg_set_insn_param(tcg_ctx, icount_start_insn, 1, num_insns);
import
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}
#endif
gen-icount: Synchronize with qemu
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gen_set_label(tcg_ctx, tcg_ctx->exitreq_label);
tcg_gen_exit_tb(tcg_ctx, tb, TB_EXIT_REQUESTED);
import
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}
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
static inline void gen_io_start(TCGContext *tcg_ctx)
import
2015-08-21 07:04:50 +00:00
{
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
#if 0
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
TCGv_i32 tmp = tcg_const_i32(tcg_ctx, 1);
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
tcg_gen_st_i32(tcg_ctx, tmp, tcg_ctx->tcg_env,
offsetof(ArchCPU, parent_obj.can_do_io) -
offsetof(ArchCPU, env));
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
tcg_temp_free_i32(tcg_ctx, tmp);
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
#endif
import
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}
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
static inline void gen_io_end(TCGContext *tcg_ctx)
import
2015-08-21 07:04:50 +00:00
{
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
#if 0
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
TCGv_i32 tmp = tcg_const_i32(tcg_ctx, 0);
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
tcg_gen_st_i32(tcg_ctx, tmp, tcg_ctx->tcg_env,
offsetof(ArchCPU, parent_obj.can_do_io) -
offsetof(ArchCPU, env));
gen-icount: use tcg_ctx.tcg_env instead of cpu_env We are relying on cpu_env being defined as a global, yet most targets (i.e. all but arm/a64) have it defined as a local variable. Luckily all of them use the same "cpu_env" name, but really compilation shouldn't break if the name of that local variable changed. Fix it by using tcg_ctx.tcg_env, which all targets set in their translate_init function. This change also helps paving the way for the upcoming "translation loop common to all targets" work. Backports commit 53f6672bcf57d82b794a2cc3a3469be7d35c8653 from qemu
2018-03-04 02:08:51 +00:00
tcg_temp_free_i32(tcg_ctx, tmp);
import
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#endif
cpu: Move icount_decr to CPUNegativeOffsetState Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Backports commit 5e1401969b25f676fee6b1c564441759cf967a43 from qemu
2019-06-13 19:32:36 +00:00
}
import
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#endif
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