Attachment 220079 Details for Bug 251463 – Write SP, LR and r0-r12 registers in addition to the PC one

[patch] Write SP, LR and r0-r12 registers in addition to the PC one

write_arm_registers_in_gdb_stub.diff (text/plain), 1.21 KB, created by Dmitry Salychev on 2020-11-29 19:44:11 UTC

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Creator: Dmitry Salychev

Created: 2020-11-29 19:44:11 UTC

Size: 1.21 KB

patch

obsolete

>Index: sys/arm/include/gdb_machdep.h
>===================================================================
>--- sys/arm/include/gdb_machdep.h	(revision 368108)
>+++ sys/arm/include/gdb_machdep.h	(working copy)
>@@ -33,6 +33,8 @@
> 
> #define	GDB_BUFSZ	400
> #define	GDB_NREGS	26
>+#define GDB_REG_SP	13
>+#define GDB_REG_LR	14
> #define	GDB_REG_PC	15
> 
> static __inline size_t
>Index: sys/arm/arm/gdb_machdep.c
>===================================================================
>--- sys/arm/arm/gdb_machdep.c	(revision 368108)
>+++ sys/arm/arm/gdb_machdep.c	(working copy)
>@@ -97,11 +97,28 @@
> void
> gdb_cpu_setreg(int regnum, void *val)
> {
>-
> 	switch (regnum) {
> 	case GDB_REG_PC:
>-		if (kdb_thread  == curthread)
>+		if (kdb_thread == curthread) {
> 			kdb_frame->tf_pc = *(register_t *)val;
>+		}
>+		break;
>+	case GDB_REG_SP:
>+		if (kdb_thread == curthread) {
>+			kdb_frame->tf_svc_sp = *(register_t *)val;
>+		}
>+		break;
>+	case GDB_REG_LR:
>+		if (kdb_thread == curthread) {
>+			kdb_frame->tf_svc_lr = *(register_t *)val;
>+		}
>+		break;
>+	default:
>+		/* Write to the general purpose registers r0-r12. */
>+		if (kdb_thread == curthread && regnum >= 0 && regnum <= 12) {
>+			*(&kdb_frame->tf_r0 + regnum) = *(register_t *)val;
>+		}
>+		break;
> 	}
> }
>

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Attachments on bug 251463: 220079 | 220115 | 220116 | 220181 | 220356