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-rw-r--r--arch/nds32/include/asm/Kbuild1
-rw-r--r--arch/nds32/include/asm/bitfield.h2
-rw-r--r--arch/nds32/include/asm/fpu.h2
-rw-r--r--arch/nds32/include/asm/fpuemu.h12
-rw-r--r--arch/nds32/include/asm/pgalloc.h31
-rw-r--r--arch/nds32/include/asm/syscall.h27
-rw-r--r--arch/nds32/include/asm/syscalls.h2
-rw-r--r--arch/nds32/include/uapi/asm/Kbuild1
-rw-r--r--arch/nds32/include/uapi/asm/fp_udfiex_crtl.h16
-rw-r--r--arch/nds32/include/uapi/asm/sigcontext.h24
-rw-r--r--arch/nds32/include/uapi/asm/udftrap.h13
-rw-r--r--arch/nds32/include/uapi/asm/unistd.h4
12 files changed, 73 insertions, 62 deletions
diff --git a/arch/nds32/include/asm/Kbuild b/arch/nds32/include/asm/Kbuild
index f37d5004a01c..77eae62036b5 100644
--- a/arch/nds32/include/asm/Kbuild
+++ b/arch/nds32/include/asm/Kbuild
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
generic-y += asm-offsets.h
generic-y += atomic.h
generic-y += bitops.h
diff --git a/arch/nds32/include/asm/bitfield.h b/arch/nds32/include/asm/bitfield.h
index e75212c76b20..b02a58e71f80 100644
--- a/arch/nds32/include/asm/bitfield.h
+++ b/arch/nds32/include/asm/bitfield.h
@@ -937,7 +937,7 @@
#define FPCSR_mskDNIT ( 0x1 << FPCSR_offDNIT )
#define FPCSR_mskRIT ( 0x1 << FPCSR_offRIT )
#define FPCSR_mskALL (FPCSR_mskIVO | FPCSR_mskDBZ | FPCSR_mskOVF | FPCSR_mskUDF | FPCSR_mskIEX)
-#define FPCSR_mskALLE_NO_UDFE (FPCSR_mskIVOE | FPCSR_mskDBZE | FPCSR_mskOVFE | FPCSR_mskIEXE)
+#define FPCSR_mskALLE_NO_UDF_IEXE (FPCSR_mskIVOE | FPCSR_mskDBZE | FPCSR_mskOVFE)
#define FPCSR_mskALLE (FPCSR_mskIVOE | FPCSR_mskDBZE | FPCSR_mskOVFE | FPCSR_mskUDFE | FPCSR_mskIEXE)
#define FPCSR_mskALLT (FPCSR_mskIVOT | FPCSR_mskDBZT | FPCSR_mskOVFT | FPCSR_mskUDFT | FPCSR_mskIEXT |FPCSR_mskDNIT | FPCSR_mskRIT)
diff --git a/arch/nds32/include/asm/fpu.h b/arch/nds32/include/asm/fpu.h
index 019f1bcfc5ee..8294ed4aaa2c 100644
--- a/arch/nds32/include/asm/fpu.h
+++ b/arch/nds32/include/asm/fpu.h
@@ -36,7 +36,7 @@ extern int do_fpuemu(struct pt_regs *regs, struct fpu_struct *fpu);
* enabled by default and kerenl will re-execute it by fpu emulator
* when getting underflow exception.
*/
-#define FPCSR_INIT FPCSR_mskUDFE
+#define FPCSR_INIT (FPCSR_mskUDFE | FPCSR_mskIEXE)
#else
#define FPCSR_INIT 0x0UL
#endif
diff --git a/arch/nds32/include/asm/fpuemu.h b/arch/nds32/include/asm/fpuemu.h
index c4bd0c7faa75..63e7ef5f7969 100644
--- a/arch/nds32/include/asm/fpuemu.h
+++ b/arch/nds32/include/asm/fpuemu.h
@@ -13,6 +13,12 @@ void fsubs(void *ft, void *fa, void *fb);
void fmuls(void *ft, void *fa, void *fb);
void fdivs(void *ft, void *fa, void *fb);
void fs2d(void *ft, void *fa);
+void fs2si(void *ft, void *fa);
+void fs2si_z(void *ft, void *fa);
+void fs2ui(void *ft, void *fa);
+void fs2ui_z(void *ft, void *fa);
+void fsi2s(void *ft, void *fa);
+void fui2s(void *ft, void *fa);
void fsqrts(void *ft, void *fa);
void fnegs(void *ft, void *fa);
int fcmps(void *ft, void *fa, void *fb, int cop);
@@ -26,6 +32,12 @@ void fmuld(void *ft, void *fa, void *fb);
void fdivd(void *ft, void *fa, void *fb);
void fsqrtd(void *ft, void *fa);
void fd2s(void *ft, void *fa);
+void fd2si(void *ft, void *fa);
+void fd2si_z(void *ft, void *fa);
+void fd2ui(void *ft, void *fa);
+void fd2ui_z(void *ft, void *fa);
+void fsi2d(void *ft, void *fa);
+void fui2d(void *ft, void *fa);
void fnegd(void *ft, void *fa);
int fcmpd(void *ft, void *fa, void *fb, int cop);
diff --git a/arch/nds32/include/asm/pgalloc.h b/arch/nds32/include/asm/pgalloc.h
index 3cbc749c79aa..e78b43d8389f 100644
--- a/arch/nds32/include/asm/pgalloc.h
+++ b/arch/nds32/include/asm/pgalloc.h
@@ -9,6 +9,9 @@
#include <asm/tlbflush.h>
#include <asm/proc-fns.h>
+#define __HAVE_ARCH_PTE_ALLOC_ONE
+#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
+
/*
* Since we have only two-level page tables, these are trivial
*/
@@ -22,22 +25,11 @@ extern void pgd_free(struct mm_struct *mm, pgd_t * pgd);
#define check_pgt_cache() do { } while (0)
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-{
- pte_t *pte;
-
- pte =
- (pte_t *) __get_free_page(GFP_KERNEL | __GFP_RETRY_MAYFAIL |
- __GFP_ZERO);
-
- return pte;
-}
-
static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
{
pgtable_t pte;
- pte = alloc_pages(GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_ZERO, 0);
+ pte = __pte_alloc_one(mm, GFP_PGTABLE_USER);
if (pte)
cpu_dcache_wb_page((unsigned long)page_address(pte));
@@ -45,21 +37,6 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
}
/*
- * Free one PTE table.
- */
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t * pte)
-{
- if (pte) {
- free_page((unsigned long)pte);
- }
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- __free_page(pte);
-}
-
-/*
* Populate the pmdp entry with a pointer to the pte. This pmd is part
* of the mm address space.
*
diff --git a/arch/nds32/include/asm/syscall.h b/arch/nds32/include/asm/syscall.h
index 899b2fb4b52f..7b5180d78e20 100644
--- a/arch/nds32/include/asm/syscall.h
+++ b/arch/nds32/include/asm/syscall.h
@@ -26,7 +26,8 @@ struct pt_regs;
*
* It's only valid to call this when @task is known to be blocked.
*/
-int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
+static inline int
+syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
return regs->syscallno;
}
@@ -47,7 +48,8 @@ int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
* system call instruction. This may not be the same as what the
* register state looked like at system call entry tracing.
*/
-void syscall_rollback(struct task_struct *task, struct pt_regs *regs)
+static inline void
+syscall_rollback(struct task_struct *task, struct pt_regs *regs)
{
regs->uregs[0] = regs->orig_r0;
}
@@ -62,7 +64,8 @@ void syscall_rollback(struct task_struct *task, struct pt_regs *regs)
* It's only valid to call this when @task is stopped for tracing on exit
* from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
*/
-long syscall_get_error(struct task_struct *task, struct pt_regs *regs)
+static inline long
+syscall_get_error(struct task_struct *task, struct pt_regs *regs)
{
unsigned long error = regs->uregs[0];
return IS_ERR_VALUE(error) ? error : 0;
@@ -79,7 +82,8 @@ long syscall_get_error(struct task_struct *task, struct pt_regs *regs)
* It's only valid to call this when @task is stopped for tracing on exit
* from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
*/
-long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
+static inline long
+syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
{
return regs->uregs[0];
}
@@ -99,8 +103,9 @@ long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
* It's only valid to call this when @task is stopped for tracing on exit
* from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
*/
-void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
- int error, long val)
+static inline void
+syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
+ int error, long val)
{
regs->uregs[0] = (long)error ? error : val;
}
@@ -118,8 +123,9 @@ void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
* entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
*/
#define SYSCALL_MAX_ARGS 6
-void syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
- unsigned long *args)
+static inline void
+syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
+ unsigned long *args)
{
args[0] = regs->orig_r0;
args++;
@@ -138,8 +144,9 @@ void syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
* It's only valid to call this when @task is stopped for tracing on
* entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
*/
-void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
- const unsigned long *args)
+static inline void
+syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
+ const unsigned long *args)
{
regs->orig_r0 = args[0];
args++;
diff --git a/arch/nds32/include/asm/syscalls.h b/arch/nds32/include/asm/syscalls.h
index f3b16f602cb5..4e7216082a67 100644
--- a/arch/nds32/include/asm/syscalls.h
+++ b/arch/nds32/include/asm/syscalls.h
@@ -7,7 +7,7 @@
asmlinkage long sys_cacheflush(unsigned long addr, unsigned long len, unsigned int op);
asmlinkage long sys_fadvise64_64_wrapper(int fd, int advice, loff_t offset, loff_t len);
asmlinkage long sys_rt_sigreturn_wrapper(void);
-asmlinkage long sys_udftrap(int option);
+asmlinkage long sys_fp_udfiex_crtl(int cmd, int act);
#include <asm-generic/syscalls.h>
diff --git a/arch/nds32/include/uapi/asm/Kbuild b/arch/nds32/include/uapi/asm/Kbuild
index 1c72f04ff75d..e78470141932 100644
--- a/arch/nds32/include/uapi/asm/Kbuild
+++ b/arch/nds32/include/uapi/asm/Kbuild
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
generic-y += ucontext.h
diff --git a/arch/nds32/include/uapi/asm/fp_udfiex_crtl.h b/arch/nds32/include/uapi/asm/fp_udfiex_crtl.h
new file mode 100644
index 000000000000..d54a5d6c6538
--- /dev/null
+++ b/arch/nds32/include/uapi/asm/fp_udfiex_crtl.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2005-2019 Andes Technology Corporation */
+#ifndef _FP_UDF_IEX_CRTL_H
+#define _FP_UDF_IEX_CRTL_H
+
+/*
+ * The cmd list of sys_fp_udfiex_crtl()
+ */
+/* Disable UDF or IEX trap based on the content of parameter act */
+#define DISABLE_UDF_IEX_TRAP 0
+/* Enable UDF or IEX trap based on the content of parameter act */
+#define ENABLE_UDF_IEX_TRAP 1
+/* Get current status of UDF and IEX trap */
+#define GET_UDF_IEX_TRAP 2
+
+#endif /* _FP_UDF_IEX_CRTL_H */
diff --git a/arch/nds32/include/uapi/asm/sigcontext.h b/arch/nds32/include/uapi/asm/sigcontext.h
index 628ff6b75825..dc89af7ddcc3 100644
--- a/arch/nds32/include/uapi/asm/sigcontext.h
+++ b/arch/nds32/include/uapi/asm/sigcontext.h
@@ -13,14 +13,24 @@ struct fpu_struct {
unsigned long long fd_regs[32];
unsigned long fpcsr;
/*
- * UDF_trap is used to recognize whether underflow trap is enabled
- * or not. When UDF_trap == 1, this process will be traped and then
- * get a SIGFPE signal when encountering an underflow exception.
- * UDF_trap is only modified through setfputrap syscall. Therefore,
- * UDF_trap needn't be saved or loaded to context in each context
- * switch.
+ * When CONFIG_SUPPORT_DENORMAL_ARITHMETIC is defined, kernel prevents
+ * hardware from treating the denormalized output as an underflow case
+ * and rounding it to a normal number. Hence kernel enables the UDF and
+ * IEX trap in the fpcsr register to step in the calculation.
+ * However, the UDF and IEX trap enable bit in $fpcsr also lose
+ * their use.
+ *
+ * UDF_IEX_trap replaces the feature of UDF and IEX trap enable bit in
+ * $fpcsr to control the trap of underflow and inexact. The bit filed
+ * of UDF_IEX_trap is the same as $fpcsr, 10th bit is used to enable UDF
+ * exception trapping and 11th bit is used to enable IEX exception
+ * trapping.
+ *
+ * UDF_IEX_trap is only modified through fp_udfiex_crtl syscall.
+ * Therefore, UDF_IEX_trap needn't be saved and restored in each
+ * context switch.
*/
- unsigned long UDF_trap;
+ unsigned long UDF_IEX_trap;
};
struct zol_struct {
diff --git a/arch/nds32/include/uapi/asm/udftrap.h b/arch/nds32/include/uapi/asm/udftrap.h
deleted file mode 100644
index 433f79d679c0..000000000000
--- a/arch/nds32/include/uapi/asm/udftrap.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright (C) 2005-2018 Andes Technology Corporation */
-#ifndef _ASM_SETFPUTRAP
-#define _ASM_SETFPUTRAP
-
-/*
- * Options for setfputrap system call
- */
-#define DISABLE_UDFTRAP 0 /* disable underflow exception trap */
-#define ENABLE_UDFTRAP 1 /* enable undeflos exception trap */
-#define GET_UDFTRAP 2 /* only get undeflos exception trap status */
-
-#endif /* _ASM_CACHECTL */
diff --git a/arch/nds32/include/uapi/asm/unistd.h b/arch/nds32/include/uapi/asm/unistd.h
index c691735017ed..a0b2f7b9c0f2 100644
--- a/arch/nds32/include/uapi/asm/unistd.h
+++ b/arch/nds32/include/uapi/asm/unistd.h
@@ -11,6 +11,6 @@
/* Additional NDS32 specific syscalls. */
#define __NR_cacheflush (__NR_arch_specific_syscall)
-#define __NR_udftrap (__NR_arch_specific_syscall + 1)
+#define __NR_fp_udfiex_crtl (__NR_arch_specific_syscall + 1)
__SYSCALL(__NR_cacheflush, sys_cacheflush)
-__SYSCALL(__NR_udftrap, sys_udftrap)
+__SYSCALL(__NR_fp_udfiex_crtl, sys_fp_udfiex_crtl)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 22:40:26 +0300