linux-stable/arch/powerpc/xmon/xmon_bpts.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef XMON_BPTS_H
#define XMON_BPTS_H

#define NBPTS	256
#ifndef __ASSEMBLY__
#include <asm/inst.h>
#define BPT_SIZE	(sizeof(struct ppc_inst) * 2)
#define BPT_WORDS	(BPT_SIZE / sizeof(struct ppc_inst))

extern unsigned int bpt_table[NBPTS * BPT_WORDS];
#endif /* __ASSEMBLY__ */

#endif /* XMON_BPTS_H */
powerpc/xmon: Move breakpoints to text section The instructions for xmon's breakpoint are stored bpt_table[] which is in the data section. This is problematic as the data section may be marked as no execute. Move bpt_table[] to the text section. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-4-jniethe5@gmail.com 2020-05-06 03:40:23 +00:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`#ifndef XMON_BPTS_H`
			`#define XMON_BPTS_H`

			`#define NBPTS 256`
			`#ifndef __ASSEMBLY__`
powerpc: Use a datatype for instructions Currently unsigned ints are used to represent instructions on powerpc. This has worked well as instructions have always been 4 byte words. However, ISA v3.1 introduces some changes to instructions that mean this scheme will no longer work as well. This change is Prefixed Instructions. A prefixed instruction is made up of a word prefix followed by a word suffix to make an 8 byte double word instruction. No matter the endianness of the system the prefix always comes first. Prefixed instructions are only planned for powerpc64. Introduce a ppc_inst type to represent both prefixed and word instructions on powerpc64 while keeping it possible to exclusively have word instructions on powerpc32. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> [mpe: Fix compile error in emulate_spe()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-12-jniethe5@gmail.com 2020-05-06 03:40:31 +00:00			`#include <asm/inst.h>`
			`#define BPT_SIZE (sizeof(struct ppc_inst) * 2)`
			`#define BPT_WORDS (BPT_SIZE / sizeof(struct ppc_inst))`
powerpc/xmon: Move breakpoints to text section The instructions for xmon's breakpoint are stored bpt_table[] which is in the data section. This is problematic as the data section may be marked as no execute. Move bpt_table[] to the text section. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-4-jniethe5@gmail.com 2020-05-06 03:40:23 +00:00
			`extern unsigned int bpt_table[NBPTS * BPT_WORDS];`
			`#endif /* __ASSEMBLY__ */`

			`#endif /* XMON_BPTS_H */`