diff options
Diffstat (limited to 'system/watchpoint.c')
| -rw-r--r-- | system/watchpoint.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/system/watchpoint.c b/system/watchpoint.c index b76007ebf6..2aa2a9ea63 100644 --- a/system/watchpoint.c +++ b/system/watchpoint.c @@ -18,13 +18,8 @@ */ #include "qemu/osdep.h" -#include "qemu/main-loop.h" #include "qemu/error-report.h" #include "exec/exec-all.h" -#include "exec/translate-all.h" -#include "sysemu/tcg.h" -#include "sysemu/replay.h" -#include "hw/core/tcg-cpu-ops.h" #include "hw/core/cpu.h" /* Add a watchpoint. */ @@ -103,122 +98,3 @@ void cpu_watchpoint_remove_all(CPUState *cpu, int mask) } } } - -#ifdef CONFIG_TCG - -/* - * Return true if this watchpoint address matches the specified - * access (ie the address range covered by the watchpoint overlaps - * partially or completely with the address range covered by the - * access). - */ -static inline bool watchpoint_address_matches(CPUWatchpoint *wp, - vaddr addr, vaddr len) -{ - /* - * We know the lengths are non-zero, but a little caution is - * required to avoid errors in the case where the range ends - * exactly at the top of the address space and so addr + len - * wraps round to zero. - */ - vaddr wpend = wp->vaddr + wp->len - 1; - vaddr addrend = addr + len - 1; - - return !(addr > wpend || wp->vaddr > addrend); -} - -/* Return flags for watchpoints that match addr + prot. */ -int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len) -{ - CPUWatchpoint *wp; - int ret = 0; - - QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { - if (watchpoint_address_matches(wp, addr, len)) { - ret |= wp->flags; - } - } - return ret; -} - -/* Generate a debug exception if a watchpoint has been hit. */ -void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len, - MemTxAttrs attrs, int flags, uintptr_t ra) -{ - CPUClass *cc = CPU_GET_CLASS(cpu); - CPUWatchpoint *wp; - - assert(tcg_enabled()); - if (cpu->watchpoint_hit) { - /* - * We re-entered the check after replacing the TB. - * Now raise the debug interrupt so that it will - * trigger after the current instruction. - */ - bql_lock(); - cpu_interrupt(cpu, CPU_INTERRUPT_DEBUG); - bql_unlock(); - return; - } - - if (cc->tcg_ops->adjust_watchpoint_address) { - /* this is currently used only by ARM BE32 */ - addr = cc->tcg_ops->adjust_watchpoint_address(cpu, addr, len); - } - - assert((flags & ~BP_MEM_ACCESS) == 0); - QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { - int hit_flags = wp->flags & flags; - - if (hit_flags && watchpoint_address_matches(wp, addr, len)) { - if (replay_running_debug()) { - /* - * replay_breakpoint reads icount. - * Force recompile to succeed, because icount may - * be read only at the end of the block. - */ - if (!cpu->neg.can_do_io) { - /* Force execution of one insn next time. */ - cpu->cflags_next_tb = 1 | CF_NOIRQ | curr_cflags(cpu); - cpu_loop_exit_restore(cpu, ra); - } - /* - * Don't process the watchpoints when we are - * in a reverse debugging operation. - */ - replay_breakpoint(); - return; - } - - wp->flags |= hit_flags << BP_HIT_SHIFT; - wp->hitaddr = MAX(addr, wp->vaddr); - wp->hitattrs = attrs; - - if (wp->flags & BP_CPU - && cc->tcg_ops->debug_check_watchpoint - && !cc->tcg_ops->debug_check_watchpoint(cpu, wp)) { - wp->flags &= ~BP_WATCHPOINT_HIT; - continue; - } - cpu->watchpoint_hit = wp; - - mmap_lock(); - /* This call also restores vCPU state */ - tb_check_watchpoint(cpu, ra); - if (wp->flags & BP_STOP_BEFORE_ACCESS) { - cpu->exception_index = EXCP_DEBUG; - mmap_unlock(); - cpu_loop_exit(cpu); - } else { - /* Force execution of one insn next time. */ - cpu->cflags_next_tb = 1 | CF_NOIRQ | curr_cflags(cpu); - mmap_unlock(); - cpu_loop_exit_noexc(cpu); - } - } else { - wp->flags &= ~BP_WATCHPOINT_HIT; - } - } -} - -#endif /* CONFIG_TCG */ |