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cpu: move adjust_watchpoint_address to tcg_ops 

commit 4061200059 ("arm: Correctly handle watchpoints for BE32 CPUs")

introduced this ARM-specific, TCG-specific hack to adjust the address,
before checking it with cpu_check_watchpoint.

Make adjust_watchpoint_address optional and move it to tcg_ops.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210204163931.7358-14-cfontana@suse.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Claudio Fontana 2021-02-04 17:39:21 +01:00 committed by Richard Henderson
parent 79fc8d4511
commit 9ea9087bb4
4 changed files with 10 additions and 9 deletions
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6
hw/core/cpu.c
View File

@ -383,11 +383,6 @@ static int64_t cpu_common_get_arch_id(CPUState *cpu)
return cpu->cpu_index;
}
static vaddr cpu_adjust_watchpoint_address(CPUState *cpu, vaddr addr, int len)
{
return addr;
}
static Property cpu_common_props[] = {
#ifndef CONFIG_USER_ONLY
/* Create a memory property for softmmu CPU object,
@ -421,7 +416,6 @@ static void cpu_class_init(ObjectClass *klass, void *data)
k->gdb_write_register = cpu_common_gdb_write_register;
k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
k->debug_check_watchpoint = cpu_common_debug_check_watchpoint;
k->adjust_watchpoint_address = cpu_adjust_watchpoint_address;
set_bit(DEVICE_CATEGORY_CPU, dc->categories);
dc->realize = cpu_common_realizefn;
dc->unrealize = cpu_common_unrealizefn;

6
include/hw/core/cpu.h
View File

@ -136,6 +136,11 @@ typedef struct TcgCpuOperations {
void (*do_unaligned_access)(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr);
/**
* @adjust_watchpoint_address: hack for cpu_check_watchpoint used by ARM
*/
vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len);
} TcgCpuOperations;
/**
@ -244,7 +249,6 @@ struct CPUClass {
const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len);
const char *deprecation_note;
/* Keep non-pointer data at the end to minimize holes. */

5
softmmu/physmem.c
View File

@ -894,7 +894,10 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
return;
}
addr = cc->adjust_watchpoint_address(cpu, addr, len);
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);
}
QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
if (watchpoint_address_matches(wp, addr, len)
&& (wp->flags & flags)) {

2
target/arm/cpu.c
View File

@ -2284,7 +2284,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
#if !defined(CONFIG_USER_ONLY)
cc->tcg_ops.do_transaction_failed = arm_cpu_do_transaction_failed;
cc->tcg_ops.do_unaligned_access = arm_cpu_do_unaligned_access;
cc->adjust_watchpoint_address = arm_adjust_watchpoint_address;
cc->tcg_ops.adjust_watchpoint_address = arm_adjust_watchpoint_address;
cc->tcg_ops.do_interrupt = arm_cpu_do_interrupt;
#endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
#endif /* CONFIG_TCG */