target/arm/sve_ldst_internal.h - third_party/qemu - Git at Google

 /*
  * ARM SVE Load/Store Helpers
  *
  * Copyright (c) 2018-2022 Linaro
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */

 #ifndef TARGET_ARM_SVE_LDST_INTERNAL_H
 #define TARGET_ARM_SVE_LDST_INTERNAL_H

 #include "exec/cpu_ldst.h"

 /*
  * Load one element into @vd + @reg_off from @host.
  * The controlling predicate is known to be true.
  */
 typedef void sve_ldst1_host_fn(void *vd, intptr_t reg_off, void *host);

 /*
  * Load one element into @vd + @reg_off from (@env, @vaddr, @ra).
  * The controlling predicate is known to be true.
  */
 typedef void sve_ldst1_tlb_fn(CPUARMState *env, void *vd, intptr_t reg_off,
                               target_ulong vaddr, uintptr_t retaddr);

 /*
  * Generate the above primitives.
  */

 #define DO_LD_HOST(NAME, H, TYPEE, TYPEM, HOST)                              \
 static inline void sve_##NAME##_host(void *vd, intptr_t reg_off, void *host) \
 { TYPEM val = HOST(host); *(TYPEE *)(vd + H(reg_off)) = val; }

 #define DO_ST_HOST(NAME, H, TYPEE, TYPEM, HOST)                              \
 static inline void sve_##NAME##_host(void *vd, intptr_t reg_off, void *host) \
 { TYPEM val = *(TYPEE *)(vd + H(reg_off)); HOST(host, val); }

 #define DO_LD_TLB(NAME, H, TYPEE, TYPEM, TLB)                              \
 static inline void sve_##NAME##_tlb(CPUARMState *env, void *vd,            \
                         intptr_t reg_off, target_ulong addr, uintptr_t ra) \
 {                                                                          \
     TYPEM val = TLB(env, useronly_clean_ptr(addr), ra);                    \
     *(TYPEE *)(vd + H(reg_off)) = val;                                     \
 }

 #define DO_ST_TLB(NAME, H, TYPEE, TYPEM, TLB)                              \
 static inline void sve_##NAME##_tlb(CPUARMState *env, void *vd,            \
                         intptr_t reg_off, target_ulong addr, uintptr_t ra) \
 {                                                                          \
     TYPEM val = *(TYPEE *)(vd + H(reg_off));                               \
     TLB(env, useronly_clean_ptr(addr), val, ra);                           \
 }

 #define DO_LD_PRIM_1(NAME, H, TE, TM)                   \
     DO_LD_HOST(NAME, H, TE, TM, ldub_p)                 \
     DO_LD_TLB(NAME, H, TE, TM, cpu_ldub_data_ra)

 DO_LD_PRIM_1(ld1bb,  H1,   uint8_t,  uint8_t)
 DO_LD_PRIM_1(ld1bhu, H1_2, uint16_t, uint8_t)
 DO_LD_PRIM_1(ld1bhs, H1_2, uint16_t,  int8_t)
 DO_LD_PRIM_1(ld1bsu, H1_4, uint32_t, uint8_t)
 DO_LD_PRIM_1(ld1bss, H1_4, uint32_t,  int8_t)
 DO_LD_PRIM_1(ld1bdu, H1_8, uint64_t, uint8_t)
 DO_LD_PRIM_1(ld1bds, H1_8, uint64_t,  int8_t)

 #define DO_ST_PRIM_1(NAME, H, TE, TM)                   \
     DO_ST_HOST(st1##NAME, H, TE, TM, stb_p)             \
     DO_ST_TLB(st1##NAME, H, TE, TM, cpu_stb_data_ra)

 DO_ST_PRIM_1(bb,   H1,  uint8_t, uint8_t)
 DO_ST_PRIM_1(bh, H1_2, uint16_t, uint8_t)
 DO_ST_PRIM_1(bs, H1_4, uint32_t, uint8_t)
 DO_ST_PRIM_1(bd, H1_8, uint64_t, uint8_t)

 #define DO_LD_PRIM_2(NAME, H, TE, TM, LD) \
     DO_LD_HOST(ld1##NAME##_be, H, TE, TM, LD##_be_p)    \
     DO_LD_HOST(ld1##NAME##_le, H, TE, TM, LD##_le_p)    \
     DO_LD_TLB(ld1##NAME##_be, H, TE, TM, cpu_##LD##_be_data_ra) \
     DO_LD_TLB(ld1##NAME##_le, H, TE, TM, cpu_##LD##_le_data_ra)

 #define DO_ST_PRIM_2(NAME, H, TE, TM, ST) \
     DO_ST_HOST(st1##NAME##_be, H, TE, TM, ST##_be_p)    \
     DO_ST_HOST(st1##NAME##_le, H, TE, TM, ST##_le_p)    \
     DO_ST_TLB(st1##NAME##_be, H, TE, TM, cpu_##ST##_be_data_ra) \
     DO_ST_TLB(st1##NAME##_le, H, TE, TM, cpu_##ST##_le_data_ra)

 DO_LD_PRIM_2(hh,  H1_2, uint16_t, uint16_t, lduw)
 DO_LD_PRIM_2(hsu, H1_4, uint32_t, uint16_t, lduw)
 DO_LD_PRIM_2(hss, H1_4, uint32_t,  int16_t, lduw)
 DO_LD_PRIM_2(hdu, H1_8, uint64_t, uint16_t, lduw)
 DO_LD_PRIM_2(hds, H1_8, uint64_t,  int16_t, lduw)

 DO_ST_PRIM_2(hh, H1_2, uint16_t, uint16_t, stw)
 DO_ST_PRIM_2(hs, H1_4, uint32_t, uint16_t, stw)
 DO_ST_PRIM_2(hd, H1_8, uint64_t, uint16_t, stw)

 DO_LD_PRIM_2(ss,  H1_4, uint32_t, uint32_t, ldl)
 DO_LD_PRIM_2(sdu, H1_8, uint64_t, uint32_t, ldl)
 DO_LD_PRIM_2(sds, H1_8, uint64_t,  int32_t, ldl)

 DO_ST_PRIM_2(ss, H1_4, uint32_t, uint32_t, stl)
 DO_ST_PRIM_2(sd, H1_8, uint64_t, uint32_t, stl)

 DO_LD_PRIM_2(dd, H1_8, uint64_t, uint64_t, ldq)
 DO_ST_PRIM_2(dd, H1_8, uint64_t, uint64_t, stq)

 #undef DO_LD_TLB
 #undef DO_ST_TLB
 #undef DO_LD_HOST
 #undef DO_LD_PRIM_1
 #undef DO_ST_PRIM_1
 #undef DO_LD_PRIM_2
 #undef DO_ST_PRIM_2

 /*
  * Resolve the guest virtual address to info->host and info->flags.
  * If @nofault, return false if the page is invalid, otherwise
  * exit via page fault exception.
  */

 typedef struct {
     void *host;
     int flags;
     MemTxAttrs attrs;
 } SVEHostPage;

 bool sve_probe_page(SVEHostPage *info, bool nofault, CPUARMState *env,
                     target_ulong addr, int mem_off, MMUAccessType access_type,
                     int mmu_idx, uintptr_t retaddr);

 /*
  * Analyse contiguous data, protected by a governing predicate.
  */

 typedef enum {
     FAULT_NO,
     FAULT_FIRST,
     FAULT_ALL,
 } SVEContFault;

 typedef struct {
     /*
      * First and last element wholly contained within the two pages.
      * mem_off_first[0] and reg_off_first[0] are always set >= 0.
      * reg_off_last[0] may be < 0 if the first element crosses pages.
      * All of mem_off_first[1], reg_off_first[1] and reg_off_last[1]
      * are set >= 0 only if there are complete elements on a second page.
      *
      * The reg_off_* offsets are relative to the internal vector register.
      * The mem_off_first offset is relative to the memory address; the
      * two offsets are different when a load operation extends, a store
      * operation truncates, or for multi-register operations.
      */
     int16_t mem_off_first[2];
     int16_t reg_off_first[2];
     int16_t reg_off_last[2];

     /*
      * One element that is misaligned and spans both pages,
      * or -1 if there is no such active element.
      */
     int16_t mem_off_split;
     int16_t reg_off_split;

     /*
      * The byte offset at which the entire operation crosses a page boundary.
      * Set >= 0 if and only if the entire operation spans two pages.
      */
     int16_t page_split;

     /* TLB data for the two pages. */
     SVEHostPage page[2];
 } SVEContLdSt;

 /*
  * Find first active element on each page, and a loose bound for the
  * final element on each page.  Identify any single element that spans
  * the page boundary.  Return true if there are any active elements.
  */
 bool sve_cont_ldst_elements(SVEContLdSt *info, target_ulong addr, uint64_t *vg,
                             intptr_t reg_max, int esz, int msize);

 /*
  * Resolve the guest virtual addresses to info->page[].
  * Control the generation of page faults with @fault.  Return false if
  * there is no work to do, which can only happen with @fault == FAULT_NO.
  */
 bool sve_cont_ldst_pages(SVEContLdSt *info, SVEContFault fault,
                          CPUARMState *env, target_ulong addr,
                          MMUAccessType access_type, uintptr_t retaddr);

 #ifdef CONFIG_USER_ONLY
 static inline void
 sve_cont_ldst_watchpoints(SVEContLdSt *info, CPUARMState *env, uint64_t *vg,
                           target_ulong addr, int esize, int msize,
                           int wp_access, uintptr_t retaddr)
 { }
 #else
 void sve_cont_ldst_watchpoints(SVEContLdSt *info, CPUARMState *env,
                                uint64_t *vg, target_ulong addr,
                                int esize, int msize, int wp_access,
                                uintptr_t retaddr);
 #endif

 void sve_cont_ldst_mte_check(SVEContLdSt *info, CPUARMState *env, uint64_t *vg,
                              target_ulong addr, int esize, int msize,
                              uint32_t mtedesc, uintptr_t ra);

 #endif /* TARGET_ARM_SVE_LDST_INTERNAL_H */
	/*
	* ARM SVE Load/Store Helpers
	*
	* Copyright (c) 2018-2022 Linaro
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef TARGET_ARM_SVE_LDST_INTERNAL_H
	#define TARGET_ARM_SVE_LDST_INTERNAL_H

	#include "exec/cpu_ldst.h"

	/*
	* Load one element into @vd + @reg_off from @host.
	* The controlling predicate is known to be true.
	*/
	typedef void sve_ldst1_host_fn(void vd, intptr_t reg_off, void host);

	/*
	* Load one element into @vd + @reg_off from (@env, @vaddr, @ra).
	* The controlling predicate is known to be true.
	*/
	typedef void sve_ldst1_tlb_fn(CPUARMState env, void vd, intptr_t reg_off,
	target_ulong vaddr, uintptr_t retaddr);

	/*
	* Generate the above primitives.
	*/

	#define DO_LD_HOST(NAME, H, TYPEE, TYPEM, HOST) \
	static inline void sve_##NAME##_host(void vd, intptr_t reg_off, void host) \
	{ TYPEM val = HOST(host); (TYPEE )(vd + H(reg_off)) = val; }

	#define DO_ST_HOST(NAME, H, TYPEE, TYPEM, HOST) \
	static inline void sve_##NAME##_host(void vd, intptr_t reg_off, void host) \
	{ TYPEM val = (TYPEE )(vd + H(reg_off)); HOST(host, val); }

	#define DO_LD_TLB(NAME, H, TYPEE, TYPEM, TLB) \
	static inline void sve_##NAME##_tlb(CPUARMState env, void vd, \
	intptr_t reg_off, target_ulong addr, uintptr_t ra) \
	{ \
	TYPEM val = TLB(env, useronly_clean_ptr(addr), ra); \
	(TYPEE )(vd + H(reg_off)) = val; \
	}

	#define DO_ST_TLB(NAME, H, TYPEE, TYPEM, TLB) \
	static inline void sve_##NAME##_tlb(CPUARMState env, void vd, \
	intptr_t reg_off, target_ulong addr, uintptr_t ra) \
	{ \
	TYPEM val = (TYPEE )(vd + H(reg_off)); \
	TLB(env, useronly_clean_ptr(addr), val, ra); \
	}

	#define DO_LD_PRIM_1(NAME, H, TE, TM) \
	DO_LD_HOST(NAME, H, TE, TM, ldub_p) \
	DO_LD_TLB(NAME, H, TE, TM, cpu_ldub_data_ra)

	DO_LD_PRIM_1(ld1bb, H1, uint8_t, uint8_t)
	DO_LD_PRIM_1(ld1bhu, H1_2, uint16_t, uint8_t)
	DO_LD_PRIM_1(ld1bhs, H1_2, uint16_t, int8_t)
	DO_LD_PRIM_1(ld1bsu, H1_4, uint32_t, uint8_t)
	DO_LD_PRIM_1(ld1bss, H1_4, uint32_t, int8_t)
	DO_LD_PRIM_1(ld1bdu, H1_8, uint64_t, uint8_t)
	DO_LD_PRIM_1(ld1bds, H1_8, uint64_t, int8_t)

	#define DO_ST_PRIM_1(NAME, H, TE, TM) \
	DO_ST_HOST(st1##NAME, H, TE, TM, stb_p) \
	DO_ST_TLB(st1##NAME, H, TE, TM, cpu_stb_data_ra)

	DO_ST_PRIM_1(bb, H1, uint8_t, uint8_t)
	DO_ST_PRIM_1(bh, H1_2, uint16_t, uint8_t)
	DO_ST_PRIM_1(bs, H1_4, uint32_t, uint8_t)
	DO_ST_PRIM_1(bd, H1_8, uint64_t, uint8_t)

	#define DO_LD_PRIM_2(NAME, H, TE, TM, LD) \
	DO_LD_HOST(ld1##NAME##_be, H, TE, TM, LD##_be_p) \
	DO_LD_HOST(ld1##NAME##_le, H, TE, TM, LD##_le_p) \
	DO_LD_TLB(ld1##NAME##_be, H, TE, TM, cpu_##LD##_be_data_ra) \
	DO_LD_TLB(ld1##NAME##_le, H, TE, TM, cpu_##LD##_le_data_ra)

	#define DO_ST_PRIM_2(NAME, H, TE, TM, ST) \
	DO_ST_HOST(st1##NAME##_be, H, TE, TM, ST##_be_p) \
	DO_ST_HOST(st1##NAME##_le, H, TE, TM, ST##_le_p) \
	DO_ST_TLB(st1##NAME##_be, H, TE, TM, cpu_##ST##_be_data_ra) \
	DO_ST_TLB(st1##NAME##_le, H, TE, TM, cpu_##ST##_le_data_ra)

	DO_LD_PRIM_2(hh, H1_2, uint16_t, uint16_t, lduw)
	DO_LD_PRIM_2(hsu, H1_4, uint32_t, uint16_t, lduw)
	DO_LD_PRIM_2(hss, H1_4, uint32_t, int16_t, lduw)
	DO_LD_PRIM_2(hdu, H1_8, uint64_t, uint16_t, lduw)
	DO_LD_PRIM_2(hds, H1_8, uint64_t, int16_t, lduw)

	DO_ST_PRIM_2(hh, H1_2, uint16_t, uint16_t, stw)
	DO_ST_PRIM_2(hs, H1_4, uint32_t, uint16_t, stw)
	DO_ST_PRIM_2(hd, H1_8, uint64_t, uint16_t, stw)

	DO_LD_PRIM_2(ss, H1_4, uint32_t, uint32_t, ldl)
	DO_LD_PRIM_2(sdu, H1_8, uint64_t, uint32_t, ldl)
	DO_LD_PRIM_2(sds, H1_8, uint64_t, int32_t, ldl)

	DO_ST_PRIM_2(ss, H1_4, uint32_t, uint32_t, stl)
	DO_ST_PRIM_2(sd, H1_8, uint64_t, uint32_t, stl)

	DO_LD_PRIM_2(dd, H1_8, uint64_t, uint64_t, ldq)
	DO_ST_PRIM_2(dd, H1_8, uint64_t, uint64_t, stq)

	#undef DO_LD_TLB
	#undef DO_ST_TLB
	#undef DO_LD_HOST
	#undef DO_LD_PRIM_1
	#undef DO_ST_PRIM_1
	#undef DO_LD_PRIM_2
	#undef DO_ST_PRIM_2

	/*
	* Resolve the guest virtual address to info->host and info->flags.
	* If @nofault, return false if the page is invalid, otherwise
	* exit via page fault exception.
	*/

	typedef struct {
	void *host;
	int flags;
	MemTxAttrs attrs;
	} SVEHostPage;

	bool sve_probe_page(SVEHostPage info, bool nofault, CPUARMState env,
	target_ulong addr, int mem_off, MMUAccessType access_type,
	int mmu_idx, uintptr_t retaddr);

	/*
	* Analyse contiguous data, protected by a governing predicate.
	*/

	typedef enum {
	FAULT_NO,
	FAULT_FIRST,
	FAULT_ALL,
	} SVEContFault;

	typedef struct {
	/*
	* First and last element wholly contained within the two pages.
	* mem_off_first[0] and reg_off_first[0] are always set >= 0.
	* reg_off_last[0] may be < 0 if the first element crosses pages.
	* All of mem_off_first[1], reg_off_first[1] and reg_off_last[1]
	* are set >= 0 only if there are complete elements on a second page.
	*
	* The reg_off_* offsets are relative to the internal vector register.
	* The mem_off_first offset is relative to the memory address; the
	* two offsets are different when a load operation extends, a store
	* operation truncates, or for multi-register operations.
	*/
	int16_t mem_off_first[2];
	int16_t reg_off_first[2];
	int16_t reg_off_last[2];

	/*
	* One element that is misaligned and spans both pages,
	* or -1 if there is no such active element.
	*/
	int16_t mem_off_split;
	int16_t reg_off_split;

	/*
	* The byte offset at which the entire operation crosses a page boundary.
	* Set >= 0 if and only if the entire operation spans two pages.
	*/
	int16_t page_split;

	/* TLB data for the two pages. */
	SVEHostPage page[2];
	} SVEContLdSt;

	/*
	* Find first active element on each page, and a loose bound for the
	* final element on each page. Identify any single element that spans
	* the page boundary. Return true if there are any active elements.
	*/
	bool sve_cont_ldst_elements(SVEContLdSt info, target_ulong addr, uint64_t vg,
	intptr_t reg_max, int esz, int msize);

	/*
	* Resolve the guest virtual addresses to info->page[].
	* Control the generation of page faults with @fault. Return false if
	* there is no work to do, which can only happen with @fault == FAULT_NO.
	*/
	bool sve_cont_ldst_pages(SVEContLdSt *info, SVEContFault fault,
	CPUARMState *env, target_ulong addr,
	MMUAccessType access_type, uintptr_t retaddr);

	#ifdef CONFIG_USER_ONLY
	static inline void
	sve_cont_ldst_watchpoints(SVEContLdSt info, CPUARMState env, uint64_t *vg,
	target_ulong addr, int esize, int msize,
	int wp_access, uintptr_t retaddr)
	{ }
	#else
	void sve_cont_ldst_watchpoints(SVEContLdSt info, CPUARMState env,
	uint64_t *vg, target_ulong addr,
	int esize, int msize, int wp_access,
	uintptr_t retaddr);
	#endif

	void sve_cont_ldst_mte_check(SVEContLdSt info, CPUARMState env, uint64_t *vg,
	target_ulong addr, int esize, int msize,
	uint32_t mtedesc, uintptr_t ra);

	#endif /* TARGET_ARM_SVE_LDST_INTERNAL_H */