diff options
Diffstat (limited to 'arch/csky/abiv2/inc/abi')
| -rw-r--r-- | arch/csky/abiv2/inc/abi/cacheflush.h | 60 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/ckmmu.h | 139 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/elf.h | 43 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/entry.h | 314 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/fpu.h | 66 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/page.h | 13 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/pgtable-bits.h | 53 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/reg_ops.h | 16 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/regdef.h | 31 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/string.h | 27 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/switch_context.h | 31 | ||||
| -rw-r--r-- | arch/csky/abiv2/inc/abi/vdso.h | 9 |
12 files changed, 802 insertions, 0 deletions
diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h new file mode 100644 index 000000000..40be16907 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/cacheflush.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_CACHEFLUSH_H +#define __ABI_CSKY_CACHEFLUSH_H + +/* Keep includes the same across arches. */ +#include <linux/mm.h> + +/* + * The cache doesn't need to be flushed when TLB entries change when + * the cache is mapped to physical memory, not virtual memory + */ +#define flush_cache_all() do { } while (0) +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) +#define flush_cache_range(vma, start, end) do { } while (0) +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) + +#define PG_dcache_clean PG_arch_1 + +static inline void flush_dcache_folio(struct folio *folio) +{ + if (test_bit(PG_dcache_clean, &folio->flags)) + clear_bit(PG_dcache_clean, &folio->flags); +} +#define flush_dcache_folio flush_dcache_folio + +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 +static inline void flush_dcache_page(struct page *page) +{ + flush_dcache_folio(page_folio(page)); +} + +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) + +#define flush_icache_range(start, end) cache_wbinv_range(start, end) + +void flush_icache_mm_range(struct mm_struct *mm, + unsigned long start, unsigned long end); +void flush_icache_deferred(struct mm_struct *mm); + +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { \ + memcpy(dst, src, len); \ + if (vma->vm_flags & VM_EXEC) { \ + dcache_wb_range((unsigned long)dst, \ + (unsigned long)dst + len); \ + flush_icache_mm_range(current->mm, \ + (unsigned long)dst, \ + (unsigned long)dst + len); \ + } \ +} while (0) +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) + +#endif /* __ABI_CSKY_CACHEFLUSH_H */ diff --git a/arch/csky/abiv2/inc/abi/ckmmu.h b/arch/csky/abiv2/inc/abi/ckmmu.h new file mode 100644 index 000000000..64215f238 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/ckmmu.h @@ -0,0 +1,139 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_CKMMUV2_H +#define __ASM_CSKY_CKMMUV2_H + +#include <abi/reg_ops.h> +#include <asm/barrier.h> + +static inline int read_mmu_index(void) +{ + return mfcr("cr<0, 15>"); +} + +static inline void write_mmu_index(int value) +{ + mtcr("cr<0, 15>", value); +} + +static inline int read_mmu_entrylo0(void) +{ + return mfcr("cr<2, 15>"); +} + +static inline int read_mmu_entrylo1(void) +{ + return mfcr("cr<3, 15>"); +} + +static inline void write_mmu_pagemask(int value) +{ + mtcr("cr<6, 15>", value); +} + +static inline int read_mmu_entryhi(void) +{ + return mfcr("cr<4, 15>"); +} + +static inline void write_mmu_entryhi(int value) +{ + mtcr("cr<4, 15>", value); +} + +static inline unsigned long read_mmu_msa0(void) +{ + return mfcr("cr<30, 15>"); +} + +static inline void write_mmu_msa0(unsigned long value) +{ + mtcr("cr<30, 15>", value); +} + +static inline unsigned long read_mmu_msa1(void) +{ + return mfcr("cr<31, 15>"); +} + +static inline void write_mmu_msa1(unsigned long value) +{ + mtcr("cr<31, 15>", value); +} + +/* + * TLB operations. + */ +static inline void tlb_probe(void) +{ + mtcr("cr<8, 15>", 0x80000000); +} + +static inline void tlb_read(void) +{ + mtcr("cr<8, 15>", 0x40000000); +} + +static inline void tlb_invalid_all(void) +{ +#ifdef CONFIG_CPU_HAS_TLBI + sync_is(); + asm volatile( + "tlbi.alls \n" + "sync.i \n" + : + : + : "memory"); +#else + mtcr("cr<8, 15>", 0x04000000); +#endif +} + +static inline void local_tlb_invalid_all(void) +{ +#ifdef CONFIG_CPU_HAS_TLBI + sync_is(); + asm volatile( + "tlbi.all \n" + "sync.i \n" + : + : + : "memory"); +#else + tlb_invalid_all(); +#endif +} + +static inline void tlb_invalid_indexed(void) +{ + mtcr("cr<8, 15>", 0x02000000); +} + +#define NOP32 ".long 0x4820c400\n" + +static inline void setup_pgd(pgd_t *pgd, int asid) +{ +#ifdef CONFIG_CPU_HAS_TLBI + sync_is(); +#else + mb(); +#endif + asm volatile( +#ifdef CONFIG_CPU_HAS_TLBI + "mtcr %1, cr<28, 15> \n" +#endif + "mtcr %1, cr<29, 15> \n" + "mtcr %0, cr< 4, 15> \n" + ".rept 64 \n" + NOP32 + ".endr \n" + : + :"r"(asid), "r"(__pa(pgd) | BIT(0)) + :"memory"); +} + +static inline pgd_t *get_pgd(void) +{ + return __va(mfcr("cr<29, 15>") & ~BIT(0)); +} +#endif /* __ASM_CSKY_CKMMUV2_H */ diff --git a/arch/csky/abiv2/inc/abi/elf.h b/arch/csky/abiv2/inc/abi/elf.h new file mode 100644 index 000000000..290f49ef4 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/elf.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_ELF_H +#define __ABI_CSKY_ELF_H + +/* The member sort in array pr_reg[x] is defined by GDB. */ +#define ELF_CORE_COPY_REGS(pr_reg, regs) do { \ + pr_reg[0] = regs->pc; \ + pr_reg[1] = regs->a1; \ + pr_reg[2] = regs->a0; \ + pr_reg[3] = regs->sr; \ + pr_reg[4] = regs->a2; \ + pr_reg[5] = regs->a3; \ + pr_reg[6] = regs->regs[0]; \ + pr_reg[7] = regs->regs[1]; \ + pr_reg[8] = regs->regs[2]; \ + pr_reg[9] = regs->regs[3]; \ + pr_reg[10] = regs->regs[4]; \ + pr_reg[11] = regs->regs[5]; \ + pr_reg[12] = regs->regs[6]; \ + pr_reg[13] = regs->regs[7]; \ + pr_reg[14] = regs->regs[8]; \ + pr_reg[15] = regs->regs[9]; \ + pr_reg[16] = regs->usp; \ + pr_reg[17] = regs->lr; \ + pr_reg[18] = regs->exregs[0]; \ + pr_reg[19] = regs->exregs[1]; \ + pr_reg[20] = regs->exregs[2]; \ + pr_reg[21] = regs->exregs[3]; \ + pr_reg[22] = regs->exregs[4]; \ + pr_reg[23] = regs->exregs[5]; \ + pr_reg[24] = regs->exregs[6]; \ + pr_reg[25] = regs->exregs[7]; \ + pr_reg[26] = regs->exregs[8]; \ + pr_reg[27] = regs->exregs[9]; \ + pr_reg[28] = regs->exregs[10]; \ + pr_reg[29] = regs->exregs[11]; \ + pr_reg[30] = regs->exregs[12]; \ + pr_reg[31] = regs->exregs[13]; \ + pr_reg[32] = regs->exregs[14]; \ + pr_reg[33] = regs->tls; \ +} while (0); +#endif /* __ABI_CSKY_ELF_H */ diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h new file mode 100644 index 000000000..cca63e699 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/entry.h @@ -0,0 +1,314 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_ENTRY_H +#define __ASM_CSKY_ENTRY_H + +#include <asm/setup.h> +#include <abi/regdef.h> + +#define LSAVE_PC 8 +#define LSAVE_PSR 12 +#define LSAVE_A0 24 +#define LSAVE_A1 28 +#define LSAVE_A2 32 +#define LSAVE_A3 36 +#define LSAVE_A4 40 +#define LSAVE_A5 44 + +#define KSPTOUSP +#define USPTOKSP + +#define usp cr<14, 1> + +.macro SAVE_ALL epc_inc + subi sp, 152 + stw tls, (sp, 0) + stw lr, (sp, 4) + + RD_MEH lr + WR_MEH lr + + mfcr lr, epc + movi tls, \epc_inc + add lr, tls + stw lr, (sp, 8) + + mfcr lr, epsr + stw lr, (sp, 12) + btsti lr, 31 + bf 1f + addi lr, sp, 152 + br 2f +1: + mfcr lr, usp +2: + stw lr, (sp, 16) + + stw a0, (sp, 20) + stw a0, (sp, 24) + stw a1, (sp, 28) + stw a2, (sp, 32) + stw a3, (sp, 36) + + addi sp, 40 + stm r4-r13, (sp) + + addi sp, 40 + stm r16-r30, (sp) +#ifdef CONFIG_CPU_HAS_HILO + mfhi lr + stw lr, (sp, 60) + mflo lr + stw lr, (sp, 64) + mfcr lr, cr14 + stw lr, (sp, 68) +#endif + subi sp, 80 +.endm + +.macro RESTORE_ALL + ldw tls, (sp, 0) + ldw lr, (sp, 4) + ldw a0, (sp, 8) + mtcr a0, epc + ldw a0, (sp, 12) + mtcr a0, epsr + btsti a0, 31 + ldw a0, (sp, 16) + mtcr a0, usp + mtcr a0, ss0 + +#ifdef CONFIG_CPU_HAS_HILO + ldw a0, (sp, 140) + mthi a0 + ldw a0, (sp, 144) + mtlo a0 + ldw a0, (sp, 148) + mtcr a0, cr14 +#endif + + ldw a0, (sp, 24) + ldw a1, (sp, 28) + ldw a2, (sp, 32) + ldw a3, (sp, 36) + + addi sp, 40 + ldm r4-r13, (sp) + addi sp, 40 + ldm r16-r30, (sp) + addi sp, 72 + bf 1f + mfcr sp, ss0 +1: + rte +.endm + +.macro SAVE_REGS_FTRACE + subi sp, 152 + stw tls, (sp, 0) + stw lr, (sp, 4) + + mfcr lr, psr + stw lr, (sp, 12) + + addi lr, sp, 152 + stw lr, (sp, 16) + + stw a0, (sp, 20) + stw a0, (sp, 24) + stw a1, (sp, 28) + stw a2, (sp, 32) + stw a3, (sp, 36) + + addi sp, 40 + stm r4-r13, (sp) + + addi sp, 40 + stm r16-r30, (sp) +#ifdef CONFIG_CPU_HAS_HILO + mfhi lr + stw lr, (sp, 60) + mflo lr + stw lr, (sp, 64) + mfcr lr, cr14 + stw lr, (sp, 68) +#endif + subi sp, 80 +.endm + +.macro RESTORE_REGS_FTRACE + ldw tls, (sp, 0) + +#ifdef CONFIG_CPU_HAS_HILO + ldw a0, (sp, 140) + mthi a0 + ldw a0, (sp, 144) + mtlo a0 + ldw a0, (sp, 148) + mtcr a0, cr14 +#endif + + ldw a0, (sp, 24) + ldw a1, (sp, 28) + ldw a2, (sp, 32) + ldw a3, (sp, 36) + + addi sp, 40 + ldm r4-r13, (sp) + addi sp, 40 + ldm r16-r30, (sp) + addi sp, 72 +.endm + +.macro SAVE_SWITCH_STACK + subi sp, 64 + stm r4-r11, (sp) + stw lr, (sp, 32) + stw r16, (sp, 36) + stw r17, (sp, 40) + stw r26, (sp, 44) + stw r27, (sp, 48) + stw r28, (sp, 52) + stw r29, (sp, 56) + stw r30, (sp, 60) +#ifdef CONFIG_CPU_HAS_HILO + subi sp, 16 + mfhi lr + stw lr, (sp, 0) + mflo lr + stw lr, (sp, 4) + mfcr lr, cr14 + stw lr, (sp, 8) +#endif +.endm + +.macro RESTORE_SWITCH_STACK +#ifdef CONFIG_CPU_HAS_HILO + ldw lr, (sp, 0) + mthi lr + ldw lr, (sp, 4) + mtlo lr + ldw lr, (sp, 8) + mtcr lr, cr14 + addi sp, 16 +#endif + ldm r4-r11, (sp) + ldw lr, (sp, 32) + ldw r16, (sp, 36) + ldw r17, (sp, 40) + ldw r26, (sp, 44) + ldw r27, (sp, 48) + ldw r28, (sp, 52) + ldw r29, (sp, 56) + ldw r30, (sp, 60) + addi sp, 64 +.endm + +/* MMU registers operators. */ +.macro RD_MIR rx + mfcr \rx, cr<0, 15> +.endm + +.macro RD_MEH rx + mfcr \rx, cr<4, 15> +.endm + +.macro RD_MCIR rx + mfcr \rx, cr<8, 15> +.endm + +.macro RD_PGDR rx + mfcr \rx, cr<29, 15> +.endm + +.macro RD_PGDR_K rx + mfcr \rx, cr<28, 15> +.endm + +.macro WR_MEH rx + mtcr \rx, cr<4, 15> +.endm + +.macro WR_MCIR rx + mtcr \rx, cr<8, 15> +.endm + +#ifdef CONFIG_PAGE_OFFSET_80000000 +#define MSA_SET cr<30, 15> +#define MSA_CLR cr<31, 15> +#endif + +#ifdef CONFIG_PAGE_OFFSET_A0000000 +#define MSA_SET cr<31, 15> +#define MSA_CLR cr<30, 15> +#endif + +.macro SETUP_MMU + /* Init psr and enable ee */ + lrw r6, DEFAULT_PSR_VALUE + mtcr r6, psr + psrset ee + + /* Invalid I/Dcache BTB BHT */ + movi r6, 7 + lsli r6, 16 + addi r6, (1<<4) | 3 + mtcr r6, cr17 + + /* Invalid all TLB */ + bgeni r6, 26 + mtcr r6, cr<8, 15> /* Set MCIR */ + + /* Check MMU on/off */ + mfcr r6, cr18 + btsti r6, 0 + bt 1f + + /* MMU off: setup mapping tlb entry */ + movi r6, 0 + mtcr r6, cr<6, 15> /* Set MPR with 4K page size */ + + grs r6, 1f /* Get current pa by PC */ + bmaski r7, (PAGE_SHIFT + 1) /* r7 = 0x1fff */ + andn r6, r7 + mtcr r6, cr<4, 15> /* Set MEH */ + + mov r8, r6 + movi r7, 0x00000006 + or r8, r7 + mtcr r8, cr<2, 15> /* Set MEL0 */ + movi r7, 0x00001006 + or r8, r7 + mtcr r8, cr<3, 15> /* Set MEL1 */ + + bgeni r8, 28 + mtcr r8, cr<8, 15> /* Set MCIR to write TLB */ + + br 2f +1: + /* + * MMU on: use origin MSA value from bootloader + * + * cr<30/31, 15> MSA register format: + * 31 - 29 | 28 - 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 + * BA Reserved SH WA B SO SEC C D V + */ + mfcr r6, MSA_SET /* Get MSA */ +2: + lsri r6, 29 + lsli r6, 29 + addi r6, 0x1ce + mtcr r6, MSA_SET /* Set MSA */ + + movi r6, 0 + mtcr r6, MSA_CLR /* Clr MSA */ + + /* enable MMU */ + mfcr r6, cr18 + bseti r6, 0 + mtcr r6, cr18 + + jmpi 3f /* jump to va */ +3: +.endm +#endif /* __ASM_CSKY_ENTRY_H */ diff --git a/arch/csky/abiv2/inc/abi/fpu.h b/arch/csky/abiv2/inc/abi/fpu.h new file mode 100644 index 000000000..aabb79355 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/fpu.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_FPU_H +#define __ASM_CSKY_FPU_H + +#include <asm/sigcontext.h> +#include <asm/ptrace.h> + +int fpu_libc_helper(struct pt_regs *regs); +void fpu_fpe(struct pt_regs *regs); + +static inline void init_fpu(void) { mtcr("cr<1, 2>", 0); } + +void save_to_user_fp(struct user_fp *user_fp); +void restore_from_user_fp(struct user_fp *user_fp); + +/* + * Define the fesr bit for fpe handle. + */ +#define FPE_ILLE (1 << 16) /* Illegal instruction */ +#define FPE_FEC (1 << 7) /* Input float-point arithmetic exception */ +#define FPE_IDC (1 << 5) /* Input denormalized exception */ +#define FPE_IXC (1 << 4) /* Inexact exception */ +#define FPE_UFC (1 << 3) /* Underflow exception */ +#define FPE_OFC (1 << 2) /* Overflow exception */ +#define FPE_DZC (1 << 1) /* Divide by zero exception */ +#define FPE_IOC (1 << 0) /* Invalid operation exception */ +#define FPE_REGULAR_EXCEPTION (FPE_IXC | FPE_UFC | FPE_OFC | FPE_DZC | FPE_IOC) + +#ifdef CONFIG_OPEN_FPU_IDE +#define IDE_STAT (1 << 5) +#else +#define IDE_STAT 0 +#endif + +#ifdef CONFIG_OPEN_FPU_IXE +#define IXE_STAT (1 << 4) +#else +#define IXE_STAT 0 +#endif + +#ifdef CONFIG_OPEN_FPU_UFE +#define UFE_STAT (1 << 3) +#else +#define UFE_STAT 0 +#endif + +#ifdef CONFIG_OPEN_FPU_OFE +#define OFE_STAT (1 << 2) +#else +#define OFE_STAT 0 +#endif + +#ifdef CONFIG_OPEN_FPU_DZE +#define DZE_STAT (1 << 1) +#else +#define DZE_STAT 0 +#endif + +#ifdef CONFIG_OPEN_FPU_IOE +#define IOE_STAT (1 << 0) +#else +#define IOE_STAT 0 +#endif + +#endif /* __ASM_CSKY_FPU_H */ diff --git a/arch/csky/abiv2/inc/abi/page.h b/arch/csky/abiv2/inc/abi/page.h new file mode 100644 index 000000000..cf005f13c --- /dev/null +++ b/arch/csky/abiv2/inc/abi/page.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +static inline void clear_user_page(void *addr, unsigned long vaddr, + struct page *page) +{ + clear_page(addr); +} + +static inline void copy_user_page(void *to, void *from, unsigned long vaddr, + struct page *page) +{ + copy_page(to, from); +} diff --git a/arch/csky/abiv2/inc/abi/pgtable-bits.h b/arch/csky/abiv2/inc/abi/pgtable-bits.h new file mode 100644 index 000000000..526152bd2 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/pgtable-bits.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_PGTABLE_BITS_H +#define __ASM_CSKY_PGTABLE_BITS_H + +/* implemented in software */ +#define _PAGE_ACCESSED (1<<7) +#define _PAGE_READ (1<<8) +#define _PAGE_WRITE (1<<9) +#define _PAGE_PRESENT (1<<10) +#define _PAGE_MODIFIED (1<<11) + +/* We borrow bit 7 to store the exclusive marker in swap PTEs. */ +#define _PAGE_SWP_EXCLUSIVE (1<<7) + +/* implemented in hardware */ +#define _PAGE_GLOBAL (1<<0) +#define _PAGE_VALID (1<<1) +#define _PAGE_DIRTY (1<<2) + +#define _PAGE_SO (1<<5) +#define _PAGE_BUF (1<<6) +#define _PAGE_CACHE (1<<3) +#define _CACHE_MASK _PAGE_CACHE + +#define _CACHE_CACHED (_PAGE_CACHE | _PAGE_BUF) +#define _CACHE_UNCACHED (0) + +#define _PAGE_PROT_NONE _PAGE_WRITE + +/* + * Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that + * are !pte_none() && !pte_present(). + * + * Format of swap PTE: + * bit 0: _PAGE_GLOBAL (zero) + * bit 1: _PAGE_VALID (zero) + * bit 2 - 6: swap type + * bit 7: exclusive marker + * bit 8: swap offset[0] + * bit 9: _PAGE_WRITE (zero) + * bit 10: _PAGE_PRESENT (zero) + * bit 11 - 31: swap offset[1 - 21] + */ +#define __swp_type(x) (((x).val >> 2) & 0x1f) +#define __swp_offset(x) ((((x).val >> 8) & 0x1) | \ + (((x).val >> 10) & 0x3ffffe)) +#define __swp_entry(type, offset) ((swp_entry_t) { \ + ((type & 0x1f) << 2) | \ + ((offset & 0x1) << 8) | \ + ((offset & 0x3ffffe) << 10)}) + +#endif /* __ASM_CSKY_PGTABLE_BITS_H */ diff --git a/arch/csky/abiv2/inc/abi/reg_ops.h b/arch/csky/abiv2/inc/abi/reg_ops.h new file mode 100644 index 000000000..49ba18a64 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/reg_ops.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_REG_OPS_H +#define __ABI_REG_OPS_H +#include <asm/reg_ops.h> + +static inline unsigned int mfcr_hint(void) +{ + return mfcr("cr31"); +} + +static inline unsigned int mfcr_ccr2(void) +{ + return mfcr("cr23"); +} +#endif /* __ABI_REG_OPS_H */ diff --git a/arch/csky/abiv2/inc/abi/regdef.h b/arch/csky/abiv2/inc/abi/regdef.h new file mode 100644 index 000000000..0933addbc --- /dev/null +++ b/arch/csky/abiv2/inc/abi/regdef.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_CSKY_REGDEF_H +#define __ASM_CSKY_REGDEF_H + +#ifdef __ASSEMBLY__ +#define syscallid r7 +#else +#define syscallid "r7" +#endif + +#define regs_syscallid(regs) regs->regs[3] +#define regs_fp(regs) regs->regs[4] + +/* + * PSR format: + * | 31 | 30-24 | 23-16 | 15 14 | 13-10 | 9 | 8-0 | + * S VEC TM MM + * + * S: Super Mode + * VEC: Exception Number + * TM: Trace Mode + * MM: Memory unaligned addr access + */ +#define DEFAULT_PSR_VALUE 0x80000200 + +#define SYSTRACE_SAVENUM 5 + +#define TRAP0_SIZE 4 + +#endif /* __ASM_CSKY_REGDEF_H */ diff --git a/arch/csky/abiv2/inc/abi/string.h b/arch/csky/abiv2/inc/abi/string.h new file mode 100644 index 000000000..f01bad2ac --- /dev/null +++ b/arch/csky/abiv2/inc/abi/string.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_STRING_H +#define __ABI_CSKY_STRING_H + +#define __HAVE_ARCH_MEMCMP +extern int memcmp(const void *, const void *, __kernel_size_t); + +#define __HAVE_ARCH_MEMCPY +extern void *memcpy(void *, const void *, __kernel_size_t); + +#define __HAVE_ARCH_MEMMOVE +extern void *memmove(void *, const void *, __kernel_size_t); + +#define __HAVE_ARCH_MEMSET +extern void *memset(void *, int, __kernel_size_t); + +#define __HAVE_ARCH_STRCMP +extern int strcmp(const char *, const char *); + +#define __HAVE_ARCH_STRCPY +extern char *strcpy(char *, const char *); + +#define __HAVE_ARCH_STRLEN +extern __kernel_size_t strlen(const char *); + +#endif /* __ABI_CSKY_STRING_H */ diff --git a/arch/csky/abiv2/inc/abi/switch_context.h b/arch/csky/abiv2/inc/abi/switch_context.h new file mode 100644 index 000000000..5dd5c3f4e --- /dev/null +++ b/arch/csky/abiv2/inc/abi/switch_context.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_PTRACE_H +#define __ABI_CSKY_PTRACE_H + +struct switch_stack { +#ifdef CONFIG_CPU_HAS_HILO + unsigned long rhi; + unsigned long rlo; + unsigned long cr14; + unsigned long pad; +#endif + unsigned long r4; + unsigned long r5; + unsigned long r6; + unsigned long r7; + unsigned long r8; + unsigned long r9; + unsigned long r10; + unsigned long r11; + + unsigned long r15; + unsigned long r16; + unsigned long r17; + unsigned long r26; + unsigned long r27; + unsigned long r28; + unsigned long r29; + unsigned long r30; +}; +#endif /* __ABI_CSKY_PTRACE_H */ diff --git a/arch/csky/abiv2/inc/abi/vdso.h b/arch/csky/abiv2/inc/abi/vdso.h new file mode 100644 index 000000000..40fd10d89 --- /dev/null +++ b/arch/csky/abiv2/inc/abi/vdso.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ABI_CSKY_VDSO_H +#define __ABI_CSKY_VDSO_H + +/* movi r7, 173 */ +#define SET_SYSCALL_ID .long 0x008bea07 + +#endif /* __ABI_CSKY_VDSO_H */ |