aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/math-emu
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/math-emu')
-rw-r--r--arch/x86/math-emu/errors.c21
-rw-r--r--arch/x86/math-emu/fpu_aux.c6
-rw-r--r--arch/x86/math-emu/fpu_entry.c9
-rw-r--r--arch/x86/math-emu/fpu_system.h2
4 files changed, 17 insertions, 21 deletions
diff --git a/arch/x86/math-emu/errors.c b/arch/x86/math-emu/errors.c
index 59d353d2c59..9e6545f269e 100644
--- a/arch/x86/math-emu/errors.c
+++ b/arch/x86/math-emu/errors.c
@@ -302,7 +302,7 @@ static struct {
0x242 in div_Xsig.S
*/
-asmlinkage void FPU_exception(int n)
+asmlinkage __visible void FPU_exception(int n)
{
int i, int_type;
@@ -330,11 +330,6 @@ asmlinkage void FPU_exception(int n)
RE_ENTRANT_CHECK_OFF;
if ((~control_word & n & CW_Exceptions) || (n == EX_INTERNAL)) {
-#ifdef PRINT_MESSAGES
- /* My message from the sponsor */
- printk(FPU_VERSION " " __DATE__ " (C) W. Metzenthen.\n");
-#endif /* PRINT_MESSAGES */
-
/* Get a name string for error reporting */
for (i = 0; exception_names[i].type; i++)
if ((exception_names[i].type & n) ==
@@ -497,7 +492,7 @@ int real_2op_NaN(FPU_REG const *b, u_char tagb,
/* Invalid arith operation on Valid registers */
/* Returns < 0 if the exception is unmasked */
-asmlinkage int arith_invalid(int deststnr)
+asmlinkage __visible int arith_invalid(int deststnr)
{
EXCEPTION(EX_Invalid);
@@ -512,7 +507,7 @@ asmlinkage int arith_invalid(int deststnr)
}
/* Divide a finite number by zero */
-asmlinkage int FPU_divide_by_zero(int deststnr, u_char sign)
+asmlinkage __visible int FPU_divide_by_zero(int deststnr, u_char sign)
{
FPU_REG *dest = &st(deststnr);
int tag = TAG_Valid;
@@ -544,7 +539,7 @@ int set_precision_flag(int flags)
}
/* This may be called often, so keep it lean */
-asmlinkage void set_precision_flag_up(void)
+asmlinkage __visible void set_precision_flag_up(void)
{
if (control_word & CW_Precision)
partial_status |= (SW_Precision | SW_C1); /* The masked response */
@@ -553,7 +548,7 @@ asmlinkage void set_precision_flag_up(void)
}
/* This may be called often, so keep it lean */
-asmlinkage void set_precision_flag_down(void)
+asmlinkage __visible void set_precision_flag_down(void)
{
if (control_word & CW_Precision) { /* The masked response */
partial_status &= ~SW_C1;
@@ -562,7 +557,7 @@ asmlinkage void set_precision_flag_down(void)
EXCEPTION(EX_Precision);
}
-asmlinkage int denormal_operand(void)
+asmlinkage __visible int denormal_operand(void)
{
if (control_word & CW_Denormal) { /* The masked response */
partial_status |= SW_Denorm_Op;
@@ -573,7 +568,7 @@ asmlinkage int denormal_operand(void)
}
}
-asmlinkage int arith_overflow(FPU_REG *dest)
+asmlinkage __visible int arith_overflow(FPU_REG *dest)
{
int tag = TAG_Valid;
@@ -601,7 +596,7 @@ asmlinkage int arith_overflow(FPU_REG *dest)
}
-asmlinkage int arith_underflow(FPU_REG *dest)
+asmlinkage __visible int arith_underflow(FPU_REG *dest)
{
int tag = TAG_Valid;
diff --git a/arch/x86/math-emu/fpu_aux.c b/arch/x86/math-emu/fpu_aux.c
index aa098708877..dc8adad10a2 100644
--- a/arch/x86/math-emu/fpu_aux.c
+++ b/arch/x86/math-emu/fpu_aux.c
@@ -30,10 +30,10 @@ static void fclex(void)
}
/* Needs to be externally visible */
-void finit_task(struct task_struct *tsk)
+void finit_soft_fpu(struct i387_soft_struct *soft)
{
- struct i387_soft_struct *soft = &tsk->thread.xstate->soft;
struct address *oaddr, *iaddr;
+ memset(soft, 0, sizeof(*soft));
soft->cwd = 0x037f;
soft->swd = 0;
soft->ftop = 0; /* We don't keep top in the status word internally. */
@@ -52,7 +52,7 @@ void finit_task(struct task_struct *tsk)
void finit(void)
{
- finit_task(current);
+ finit_soft_fpu(&current->thread.fpu.state->soft);
}
/*
diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c
index 5d87f586f8d..9b868124128 100644
--- a/arch/x86/math-emu/fpu_entry.c
+++ b/arch/x86/math-emu/fpu_entry.c
@@ -28,6 +28,7 @@
#include <linux/regset.h>
#include <asm/uaccess.h>
+#include <asm/traps.h>
#include <asm/desc.h>
#include <asm/user.h>
#include <asm/i387.h>
@@ -269,7 +270,7 @@ void math_emulate(struct math_emu_info *info)
FPU_EIP = FPU_ORIG_EIP; /* Point to current FPU instruction. */
RE_ENTRANT_CHECK_OFF;
- current->thread.trap_no = 16;
+ current->thread.trap_nr = X86_TRAP_MF;
current->thread.error_code = 0;
send_sig(SIGFPE, current, 1);
return;
@@ -662,7 +663,7 @@ static int valid_prefix(u_char *Byte, u_char __user **fpu_eip,
void math_abort(struct math_emu_info *info, unsigned int signal)
{
FPU_EIP = FPU_ORIG_EIP;
- current->thread.trap_no = 16;
+ current->thread.trap_nr = X86_TRAP_MF;
current->thread.error_code = 0;
send_sig(signal, current, 1);
RE_ENTRANT_CHECK_OFF;
@@ -681,7 +682,7 @@ int fpregs_soft_set(struct task_struct *target,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
- struct i387_soft_struct *s387 = &target->thread.xstate->soft;
+ struct i387_soft_struct *s387 = &target->thread.fpu.state->soft;
void *space = s387->st_space;
int ret;
int offset, other, i, tags, regnr, tag, newtop;
@@ -733,7 +734,7 @@ int fpregs_soft_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
- struct i387_soft_struct *s387 = &target->thread.xstate->soft;
+ struct i387_soft_struct *s387 = &target->thread.fpu.state->soft;
const void *space = s387->st_space;
int ret;
int offset = (S387->ftop & 7) * 10, other = 80 - offset;
diff --git a/arch/x86/math-emu/fpu_system.h b/arch/x86/math-emu/fpu_system.h
index 50fa0ec2c8a..2c614410a5f 100644
--- a/arch/x86/math-emu/fpu_system.h
+++ b/arch/x86/math-emu/fpu_system.h
@@ -31,7 +31,7 @@
#define SEG_EXPAND_DOWN(s) (((s).b & ((1 << 11) | (1 << 10))) \
== (1 << 10))
-#define I387 (current->thread.xstate)
+#define I387 (current->thread.fpu.state)
#define FPU_info (I387->soft.info)
#define FPU_CS (*(unsigned short *) &(FPU_info->regs->cs))
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 03:40:23 +0000