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arm64: Add EL1 hardware breakpoint exceptions

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Reviewed by:	jhb
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D44353
This commit is contained in:
Andrew Turner 2024-03-12 16:50:04 +00:00
parent d93b3a65f7
commit c802b486dd
4 changed files with 7 additions and 1 deletions
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1
sys/arm64/arm64/gdb_machdep.c
View file

@ -110,6 +110,7 @@ gdb_cpu_signal(int type, int code __unused)
switch (type) {
case EXCP_WATCHPT_EL1:
case EXCP_SOFTSTP_EL1:
case EXCP_BRKPT_EL1:
case EXCP_BRK:
return (SIGTRAP);
}

2
sys/arm64/arm64/trap.c
View file

@ -500,6 +500,7 @@ do_el1h_sync(struct thread *td, struct trapframe *frame)
*/
switch (exception) {
case EXCP_BRK:
case EXCP_BRKPT_EL1:
case EXCP_WATCHPT_EL1:
case EXCP_SOFTSTP_EL1:
break;
@ -551,6 +552,7 @@ do_el1h_sync(struct thread *td, struct trapframe *frame)
panic("No debugger in kernel.");
#endif
break;
case EXCP_BRKPT_EL1:
case EXCP_WATCHPT_EL1:
case EXCP_SOFTSTP_EL1:
#ifdef KDB

1
sys/arm64/include/armreg.h
View file

@ -439,6 +439,7 @@
#define EXCP_TRAP_FP 0x2c /* Trapped FP exception */
#define EXCP_SERROR 0x2f /* SError interrupt */
#define EXCP_BRKPT_EL0 0x30 /* Hardware breakpoint, from same EL */
#define EXCP_BRKPT_EL1 0x31 /* Hardware breakpoint, from same EL */
#define EXCP_SOFTSTP_EL0 0x32 /* Software Step, from lower EL */
#define EXCP_SOFTSTP_EL1 0x33 /* Software Step, from same EL */
#define EXCP_WATCHPT_EL0 0x34 /* Watchpoint, from lower EL */

4
sys/arm64/include/db_machdep.h
View file

@ -36,6 +36,7 @@
#include <machine/trap.h>
#define T_BREAKPOINT (EXCP_BRK)
#define T_HW_BREAKPOINT (EXCP_BRKPT_EL1)
#define T_SINGLESTEP (EXCP_SOFTSTP_EL1)
#define T_WATCHPOINT (EXCP_WATCHPT_EL1)
@ -56,7 +57,8 @@ typedef long db_expr_t;
#define db_clear_single_step kdb_cpu_clear_singlestep
#define db_set_single_step kdb_cpu_set_singlestep
#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
#define IS_BREAKPOINT_TRAP(type, code) \
(type == T_BREAKPOINT || type == T_HW_BREAKPOINT)
#define IS_SSTEP_TRAP(type, code) (type == T_SINGLESTEP)
#define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT)