This is fixing #404 ("windows xp boot takes much longer...") and several other similar reports.
Changes for v4: * Issue breakpoints directly from cflags_for_breakpoints. Do not generate code for a TB beginning with a BP at all. * Drop the problematic TranslatorOps.breakpoint_check hook entirely. Changes for v3: * Map CF_COUNT_MASK == 0 -> TCG_MAX_INSNS. * Split out *_breakpoint_check fixes for avr, mips, riscv. Changes for v2: * All prerequisites and 7 of the patches from v1 with are merged. Patches lacking review are all new: 03-target-alpha-Drop-goto_tb-path-in-gen_call_pal.patch 09-hw-core-Introduce-TCGCPUOps.debug_check_breakpoin.patch 10-target-arm-Implement-debug_check_breakpoint.patch 11-target-i386-Implement-debug_check_breakpoint.patch 12-accel-tcg-Move-breakpoint-recognition-outside-tra.patch 13-accel-tcg-Remove-TranslatorOps.breakpoint_check.patch 15-accel-tcg-Record-singlestep_enabled-in-tb-cflags.patch r~ Richard Henderson (15): accel/tcg: Reduce CF_COUNT_MASK to match TCG_MAX_INSNS accel/tcg: Move curr_cflags into cpu-exec.c target/alpha: Drop goto_tb path in gen_call_pal accel/tcg: Add CF_NO_GOTO_TB and CF_NO_GOTO_PTR accel/tcg: Drop CF_NO_GOTO_PTR from -d nochain accel/tcg: Handle -singlestep in curr_cflags accel/tcg: Use CF_NO_GOTO_{TB, PTR} in cpu_exec_step_atomic accel/tcg: Move cflags lookup into tb_find hw/core: Introduce TCGCPUOps.debug_check_breakpoint target/arm: Implement debug_check_breakpoint target/i386: Implement debug_check_breakpoint accel/tcg: Move breakpoint recognition outside translation accel/tcg: Remove TranslatorOps.breakpoint_check accel/tcg: Hoist tb_cflags to a local in translator_loop accel/tcg: Record singlestep_enabled in tb->cflags include/exec/exec-all.h | 24 +++--- include/exec/translator.h | 11 --- include/hw/core/tcg-cpu-ops.h | 6 ++ target/arm/internals.h | 3 + accel/tcg/cpu-exec.c | 143 ++++++++++++++++++++++++++++------ accel/tcg/translate-all.c | 7 +- accel/tcg/translator.c | 39 ++-------- cpu.c | 24 ------ target/alpha/translate.c | 31 +------- target/arm/cpu.c | 1 + target/arm/cpu_tcg.c | 1 + target/arm/debug_helper.c | 7 +- target/arm/translate-a64.c | 25 ------ target/arm/translate.c | 29 ------- target/avr/translate.c | 10 --- target/cris/translate.c | 20 ----- target/hexagon/translate.c | 17 ---- target/hppa/translate.c | 11 --- target/i386/tcg/tcg-cpu.c | 12 +++ target/i386/tcg/translate.c | 28 ------- target/m68k/translate.c | 18 ----- target/microblaze/translate.c | 18 ----- target/mips/tcg/translate.c | 19 ----- target/nios2/translate.c | 27 ------- target/openrisc/translate.c | 17 ---- target/ppc/translate.c | 18 ----- target/riscv/translate.c | 17 ---- target/rx/translate.c | 14 ---- target/s390x/tcg/translate.c | 24 ------ target/sh4/translate.c | 18 ----- target/sparc/translate.c | 17 ---- target/tricore/translate.c | 16 ---- target/xtensa/translate.c | 17 ---- tcg/tcg-op.c | 28 +++---- 34 files changed, 185 insertions(+), 532 deletions(-) -- 2.25.1