svn commit: r368535 - stable/12/sys/arm/include

[Mark Johnston]

Author: markj
Date: Fri Dec 11 00:25:34 2020
New Revision: 368535
URL: https://svnweb.freebsd.org/changeset/base/368535

Log:
  MFC r368108:
  arm: Correctly report the size of FPA registers to GDB
  
  PR:	251022

Modified:
  stable/12/sys/arm/include/gdb_machdep.h
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/arm/include/gdb_machdep.h
==============================================================================
--- stable/12/sys/arm/include/gdb_machdep.h	Fri Dec 11 00:20:04 2020	(r368534)
+++ stable/12/sys/arm/include/gdb_machdep.h	Fri Dec 11 00:25:34 2020	(r368535)
@@ -36,9 +36,13 @@
 #define	GDB_REG_PC	15
 
 static __inline size_t
-gdb_cpu_regsz(int regnum __unused)
+gdb_cpu_regsz(int regnum)
 {
-	return (sizeof(int));
+	/*
+	 * GDB expects the FPA registers f0-f7, each 96 bits wide, to be placed
+	 * in between the PC and CSPR in response to a "g" packet.
+	 */
+	return (regnum >= 16 && regnum <= 23 ? 12 : sizeof(int));
 }
 
 static __inline int