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arm64: Scalable Vector Extension (SVE) support.

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Change-Id: I3568687913f583edfaa297d5cf5ac91d319d97e9
This commit is contained in:
Shiratori, Takehiro
2019-02-21 11:29:33 +09:00
committed by Masamichi Takagi
parent dac99f708c
commit 07aa96ef95
15 changed files with 490 additions and 223 deletions
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86
arch/arm64/kernel/include/ptrace.h
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@@ -1,4 +1,4 @@
/* ptrace.h COPYRIGHT FUJITSU LIMITED 2015-2017 */
/* ptrace.h COPYRIGHT FUJITSU LIMITED 2015-2019 */
#ifndef __HEADER_ARM64_COMMON_PTRACE_H
#define __HEADER_ARM64_COMMON_PTRACE_H
@@ -46,6 +46,7 @@
#ifndef __ASSEMBLY__
#include <lwk/compiler.h>
#include <ihk/types.h>
struct user_hwdebug_state {
@@ -78,6 +79,70 @@ struct user_sve_header {
uint16_t __reserved;
};
enum aarch64_regset {
REGSET_GPR,
REGSET_FPR,
REGSET_TLS,
REGSET_HW_BREAK,
REGSET_HW_WATCH,
REGSET_SYSTEM_CALL,
#ifdef CONFIG_ARM64_SVE
REGSET_SVE,
#endif /* CONFIG_ARM64_SVE */
};
struct thread;
struct user_regset;
typedef int user_regset_active_fn(struct thread *target,
const struct user_regset *regset);
typedef long user_regset_get_fn(struct thread *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf);
typedef long user_regset_set_fn(struct thread *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf);
typedef int user_regset_writeback_fn(struct thread *target,
const struct user_regset *regset,
int immediate);
typedef unsigned int user_regset_get_size_fn(struct thread *target,
const struct user_regset *regset);
struct user_regset {
user_regset_get_fn *get;
user_regset_set_fn *set;
user_regset_active_fn *active;
user_regset_writeback_fn *writeback;
user_regset_get_size_fn *get_size;
unsigned int n;
unsigned int size;
unsigned int align;
unsigned int bias;
unsigned int core_note_type;
};
struct user_regset_view {
const char *name;
const struct user_regset *regsets;
unsigned int n;
uint32_t e_flags;
uint16_t e_machine;
uint8_t ei_osabi;
};
extern const struct user_regset_view *current_user_regset_view(void);
extern const struct user_regset *find_regset(
const struct user_regset_view *view,
unsigned int type);
extern unsigned int regset_size(struct thread *target,
const struct user_regset *regset);
/* Definitions for user_sve_header.flags: */
#define SVE_PT_REGS_MASK (1 << 0)
@@ -85,7 +150,7 @@ struct user_sve_header {
#define SVE_PT_REGS_SVE SVE_PT_REGS_MASK
#define SVE_PT_VL_THREAD PR_SVE_SET_VL_THREAD
#define SVE_PT_VL_INHERIT PR_SVE_SET_VL_INHERIT
#define SVE_PT_VL_INHERIT PR_SVE_VL_INHERIT
#define SVE_PT_VL_ONEXEC PR_SVE_SET_VL_ONEXEC
/*
@@ -99,7 +164,9 @@ struct user_sve_header {
*/
/* Offset from the start of struct user_sve_header to the register data */
#define SVE_PT_REGS_OFFSET ((sizeof(struct sve_context) + 15) / 16 * 16)
#define SVE_PT_REGS_OFFSET \
((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
/*
* The register data content and layout depends on the value of the
@@ -174,8 +241,10 @@ struct user_sve_header {
#define SVE_PT_SVE_FFR_OFFSET(vq) \
__SVE_SIG_TO_PT(SVE_SIG_FFR_OFFSET(vq))
#define SVE_PT_SVE_FPSR_OFFSET(vq) \
((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + 15) / 16 * 16)
#define SVE_PT_SVE_FPSR_OFFSET(vq) \
((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + \
(SVE_VQ_BYTES - 1)) \
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
#define SVE_PT_SVE_FPCR_OFFSET(vq) \
(SVE_PT_SVE_FPSR_OFFSET(vq) + SVE_PT_SVE_FPSR_SIZE)
@@ -184,9 +253,10 @@ struct user_sve_header {
* 128-bit boundary.
*/
#define SVE_PT_SVE_SIZE(vq, flags) \
((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE - \
SVE_PT_SVE_OFFSET + 15) / 16 * 16)
#define SVE_PT_SVE_SIZE(vq, flags) \
((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE \
- SVE_PT_SVE_OFFSET + (SVE_VQ_BYTES - 1)) \
/ SVE_VQ_BYTES * SVE_VQ_BYTES)
#define SVE_PT_SIZE(vq, flags) \
(((flags) & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE ? \