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[MIPS] Unify mips_fpu_soft_struct and mips_fpu_hard_structs.

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The struct mips_fpu_soft_struct and mips_fpu_hard_struct are
completely same now and the kernel fpu emulator assumes that.  This
patch unifies them to mips_fpu_struct and get rid of mips_fpu_union.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto 2006-05-16 01:26:03 +09:00 committed by Ralf Baechle
parent 5deee2dbf4
commit eae89076e6
12 changed files with 76 additions and 109 deletions
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66
arch/mips/kernel/asm-offsets.c
View file

@ -141,72 +141,72 @@ void output_thread_defines(void)
void output_thread_fpu_defines(void)
{
offset("#define THREAD_FPR0 ",
struct task_struct, thread.fpu.hard.fpr[0]);
struct task_struct, thread.fpu.fpr[0]);
offset("#define THREAD_FPR1 ",
struct task_struct, thread.fpu.hard.fpr[1]);
struct task_struct, thread.fpu.fpr[1]);
offset("#define THREAD_FPR2 ",
struct task_struct, thread.fpu.hard.fpr[2]);
struct task_struct, thread.fpu.fpr[2]);
offset("#define THREAD_FPR3 ",
struct task_struct, thread.fpu.hard.fpr[3]);
struct task_struct, thread.fpu.fpr[3]);
offset("#define THREAD_FPR4 ",
struct task_struct, thread.fpu.hard.fpr[4]);
struct task_struct, thread.fpu.fpr[4]);
offset("#define THREAD_FPR5 ",
struct task_struct, thread.fpu.hard.fpr[5]);
struct task_struct, thread.fpu.fpr[5]);
offset("#define THREAD_FPR6 ",
struct task_struct, thread.fpu.hard.fpr[6]);
struct task_struct, thread.fpu.fpr[6]);
offset("#define THREAD_FPR7 ",
struct task_struct, thread.fpu.hard.fpr[7]);
struct task_struct, thread.fpu.fpr[7]);
offset("#define THREAD_FPR8 ",
struct task_struct, thread.fpu.hard.fpr[8]);
struct task_struct, thread.fpu.fpr[8]);
offset("#define THREAD_FPR9 ",
struct task_struct, thread.fpu.hard.fpr[9]);
struct task_struct, thread.fpu.fpr[9]);
offset("#define THREAD_FPR10 ",
struct task_struct, thread.fpu.hard.fpr[10]);
struct task_struct, thread.fpu.fpr[10]);
offset("#define THREAD_FPR11 ",
struct task_struct, thread.fpu.hard.fpr[11]);
struct task_struct, thread.fpu.fpr[11]);
offset("#define THREAD_FPR12 ",
struct task_struct, thread.fpu.hard.fpr[12]);
struct task_struct, thread.fpu.fpr[12]);
offset("#define THREAD_FPR13 ",
struct task_struct, thread.fpu.hard.fpr[13]);
struct task_struct, thread.fpu.fpr[13]);
offset("#define THREAD_FPR14 ",
struct task_struct, thread.fpu.hard.fpr[14]);
struct task_struct, thread.fpu.fpr[14]);
offset("#define THREAD_FPR15 ",
struct task_struct, thread.fpu.hard.fpr[15]);
struct task_struct, thread.fpu.fpr[15]);
offset("#define THREAD_FPR16 ",
struct task_struct, thread.fpu.hard.fpr[16]);
struct task_struct, thread.fpu.fpr[16]);
offset("#define THREAD_FPR17 ",
struct task_struct, thread.fpu.hard.fpr[17]);
struct task_struct, thread.fpu.fpr[17]);
offset("#define THREAD_FPR18 ",
struct task_struct, thread.fpu.hard.fpr[18]);
struct task_struct, thread.fpu.fpr[18]);
offset("#define THREAD_FPR19 ",
struct task_struct, thread.fpu.hard.fpr[19]);
struct task_struct, thread.fpu.fpr[19]);
offset("#define THREAD_FPR20 ",
struct task_struct, thread.fpu.hard.fpr[20]);
struct task_struct, thread.fpu.fpr[20]);
offset("#define THREAD_FPR21 ",
struct task_struct, thread.fpu.hard.fpr[21]);
struct task_struct, thread.fpu.fpr[21]);
offset("#define THREAD_FPR22 ",
struct task_struct, thread.fpu.hard.fpr[22]);
struct task_struct, thread.fpu.fpr[22]);
offset("#define THREAD_FPR23 ",
struct task_struct, thread.fpu.hard.fpr[23]);
struct task_struct, thread.fpu.fpr[23]);
offset("#define THREAD_FPR24 ",
struct task_struct, thread.fpu.hard.fpr[24]);
struct task_struct, thread.fpu.fpr[24]);
offset("#define THREAD_FPR25 ",
struct task_struct, thread.fpu.hard.fpr[25]);
struct task_struct, thread.fpu.fpr[25]);
offset("#define THREAD_FPR26 ",
struct task_struct, thread.fpu.hard.fpr[26]);
struct task_struct, thread.fpu.fpr[26]);
offset("#define THREAD_FPR27 ",
struct task_struct, thread.fpu.hard.fpr[27]);
struct task_struct, thread.fpu.fpr[27]);
offset("#define THREAD_FPR28 ",
struct task_struct, thread.fpu.hard.fpr[28]);
struct task_struct, thread.fpu.fpr[28]);
offset("#define THREAD_FPR29 ",
struct task_struct, thread.fpu.hard.fpr[29]);
struct task_struct, thread.fpu.fpr[29]);
offset("#define THREAD_FPR30 ",
struct task_struct, thread.fpu.hard.fpr[30]);
struct task_struct, thread.fpu.fpr[30]);
offset("#define THREAD_FPR31 ",
struct task_struct, thread.fpu.hard.fpr[31]);
struct task_struct, thread.fpu.fpr[31]);
offset("#define THREAD_FCR31 ",
struct task_struct, thread.fpu.hard.fcr31);
struct task_struct, thread.fpu.fcr31);
linefeed;
}

2
arch/mips/kernel/branch.c
View file

@ -178,7 +178,7 @@ int __compute_return_epc(struct pt_regs *regs)
if (is_fpu_owner())
asm volatile("cfc1\t%0,$31" : "=r" (fcr31));
else
fcr31 = current->thread.fpu.hard.fcr31;
fcr31 = current->thread.fpu.fcr31;
preempt_enable();
bit = (insn.i_format.rt >> 2);

2
arch/mips/kernel/irixsig.c
View file

@ -260,7 +260,7 @@ irix_sigreturn(struct pt_regs *regs)
for(i = 0; i < 32; i++)
error |= __get_user(fregs[i], &context->fpregs[i]);
error |= __get_user(current->thread.fpu.hard.fcr31, &context->fpcsr);
error |= __get_user(current->thread.fpu.fcr31, &context->fpcsr);
}
/* XXX do sigstack crapola here... XXX */

26
arch/mips/kernel/ptrace.c
View file

@ -120,11 +120,11 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
__put_user ((__u64) -1, i + (__u64 __user *) data);
}
__put_user (child->thread.fpu.fcr31, data + 64);
if (cpu_has_fpu) {
unsigned int flags, tmp;
__put_user (child->thread.fpu.hard.fcr31, data + 64);
preempt_disable();
if (cpu_has_mipsmt) {
unsigned int vpflags = dvpe();
@ -142,7 +142,6 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
preempt_enable();
__put_user (tmp, data + 65);
} else {
__put_user (child->thread.fpu.soft.fcr31, data + 64);
__put_user ((__u32) 0, data + 65);
}
@ -162,10 +161,7 @@ int ptrace_setfpregs (struct task_struct *child, __u32 __user *data)
for (i = 0; i < 32; i++)
__get_user (fregs[i], i + (__u64 __user *) data);
if (cpu_has_fpu)
__get_user (child->thread.fpu.hard.fcr31, data + 64);
else
__get_user (child->thread.fpu.soft.fcr31, data + 64);
__get_user (child->thread.fpu.fcr31, data + 64);
/* FIR may not be written. */
@ -241,10 +237,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
tmp = regs->lo;
break;
case FPC_CSR:
if (cpu_has_fpu)
tmp = child->thread.fpu.hard.fcr31;
else
tmp = child->thread.fpu.soft.fcr31;
tmp = child->thread.fpu.fcr31;
break;
case FPC_EIR: { /* implementation / version register */
unsigned int flags;
@ -336,9 +329,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
if (!tsk_used_math(child)) {
/* FP not yet used */
memset(&child->thread.fpu.hard, ~0,
sizeof(child->thread.fpu.hard));
child->thread.fpu.hard.fcr31 = 0;
memset(&child->thread.fpu, ~0,
sizeof(child->thread.fpu));
child->thread.fpu.fcr31 = 0;
}
#ifdef CONFIG_32BIT
/*
@ -369,10 +362,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
regs->lo = data;
break;
case FPC_CSR:
if (cpu_has_fpu)
child->thread.fpu.hard.fcr31 = data;
else
child->thread.fpu.soft.fcr31 = data;
child->thread.fpu.fcr31 = data;
break;
case DSP_BASE ... DSP_BASE + 5: {
dspreg_t *dregs;

16
arch/mips/kernel/ptrace32.c
View file

@ -166,10 +166,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
tmp = regs->lo;
break;
case FPC_CSR:
if (cpu_has_fpu)
tmp = child->thread.fpu.hard.fcr31;
else
tmp = child->thread.fpu.soft.fcr31;
tmp = child->thread.fpu.fcr31;
break;
case FPC_EIR: { /* implementation / version register */
unsigned int flags;
@ -288,9 +285,9 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
if (!tsk_used_math(child)) {
/* FP not yet used */
memset(&child->thread.fpu.hard, ~0,
sizeof(child->thread.fpu.hard));
child->thread.fpu.hard.fcr31 = 0;
memset(&child->thread.fpu, ~0,
sizeof(child->thread.fpu));
child->thread.fpu.fcr31 = 0;
}
/*
* The odd registers are actually the high order bits
@ -318,10 +315,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
regs->lo = data;
break;
case FPC_CSR:
if (cpu_has_fpu)
child->thread.fpu.hard.fcr31 = data;
else
child->thread.fpu.soft.fcr31 = data;
child->thread.fpu.fcr31 = data;
break;
case DSP_BASE ... DSP_BASE + 5: {
dspreg_t *dregs;

9
arch/mips/kernel/traps.c
View file

@ -65,7 +65,7 @@ extern asmlinkage void handle_mcheck(void);
extern asmlinkage void handle_reserved(void);
extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
struct mips_fpu_soft_struct *ctx);
struct mips_fpu_struct *ctx);
void (*board_be_init)(void);
int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
@ -600,8 +600,7 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
preempt_enable();
/* Run the emulator */
sig = fpu_emulator_cop1Handler (regs,
&current->thread.fpu.soft);
sig = fpu_emulator_cop1Handler (regs, &current->thread.fpu);
preempt_disable();
@ -610,7 +609,7 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
* We can't allow the emulated instruction to leave any of
* the cause bit set in $fcr31.
*/
current->thread.fpu.soft.fcr31 &= ~FPU_CSR_ALL_X;
current->thread.fpu.fcr31 &= ~FPU_CSR_ALL_X;
/* Restore the hardware register state */
restore_fp(current);
@ -755,7 +754,7 @@ asmlinkage void do_cpu(struct pt_regs *regs)
if (!cpu_has_fpu) {
int sig = fpu_emulator_cop1Handler(regs,
&current->thread.fpu.soft);
&current->thread.fpu);
if (sig)
force_sig(sig, current);
#ifdef CONFIG_MIPS_MT_FPAFF

15
arch/mips/math-emu/cp1emu.c
View file

@ -60,15 +60,15 @@
/* Function which emulates a floating point instruction. */
static int fpu_emu(struct pt_regs *, struct mips_fpu_soft_struct *,
static int fpu_emu(struct pt_regs *, struct mips_fpu_struct *,
mips_instruction);
#if __mips >= 4 && __mips != 32
static int fpux_emu(struct pt_regs *,
struct mips_fpu_soft_struct *, mips_instruction);
struct mips_fpu_struct *, mips_instruction);
#endif
/* Further private data for which no space exists in mips_fpu_soft_struct */
/* Further private data for which no space exists in mips_fpu_struct */
struct mips_fpu_emulator_stats fpuemustats;
@ -203,7 +203,7 @@ static int isBranchInstr(mips_instruction * i)
* Two instructions if the instruction is in a branch delay slot.
*/
static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx)
static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
{
mips_instruction ir;
void * emulpc, *contpc;
@ -595,7 +595,7 @@ DEF3OP(msub, dp, ieee754dp_mul, ieee754dp_sub,);
DEF3OP(nmadd, dp, ieee754dp_mul, ieee754dp_add, ieee754dp_neg);
DEF3OP(nmsub, dp, ieee754dp_mul, ieee754dp_sub, ieee754dp_neg);
static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
mips_instruction ir)
{
unsigned rcsr = 0; /* resulting csr */
@ -759,7 +759,7 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
/*
* Emulate a single COP1 arithmetic instruction.
*/
static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
mips_instruction ir)
{
int rfmt; /* resulting format */
@ -1233,8 +1233,7 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
return 0;
}
int fpu_emulator_cop1Handler(struct pt_regs *xcp,
struct mips_fpu_soft_struct *ctx)
int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
{
unsigned long oldepc, prevepc;
mips_instruction insn;

2
arch/mips/math-emu/ieee754.h
View file

@ -329,7 +329,7 @@ struct _ieee754_csr {
unsigned pad0:7;
#endif
};
#define ieee754_csr (*(struct _ieee754_csr *)(&current->thread.fpu.soft.fcr31))
#define ieee754_csr (*(struct _ieee754_csr *)(&current->thread.fpu.fcr31))
static inline unsigned ieee754_getrm(void)
{

24
arch/mips/math-emu/kernel_linkage.c
View file

@ -39,9 +39,9 @@ void fpu_emulator_init_fpu(void)
printk("Algorithmics/MIPS FPU Emulator v1.5\n");
}
current->thread.fpu.soft.fcr31 = 0;
current->thread.fpu.fcr31 = 0;
for (i = 0; i < 32; i++) {
current->thread.fpu.soft.fpr[i] = SIGNALLING_NAN;
current->thread.fpu.fpr[i] = SIGNALLING_NAN;
}
}
@ -59,10 +59,9 @@ int fpu_emulator_save_context(struct sigcontext *sc)
for (i = 0; i < 32; i++) {
err |=
__put_user(current->thread.fpu.soft.fpr[i],
&sc->sc_fpregs[i]);
__put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
}
err |= __put_user(current->thread.fpu.soft.fcr31, &sc->sc_fpc_csr);
err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
return err;
}
@ -74,10 +73,9 @@ int fpu_emulator_restore_context(struct sigcontext *sc)
for (i = 0; i < 32; i++) {
err |=
__get_user(current->thread.fpu.soft.fpr[i],
&sc->sc_fpregs[i]);
__get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
}
err |= __get_user(current->thread.fpu.soft.fcr31, &sc->sc_fpc_csr);
err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
return err;
}
@ -94,10 +92,9 @@ int fpu_emulator_save_context32(struct sigcontext32 *sc)
for (i = 0; i < 32; i+=2) {
err |=
__put_user(current->thread.fpu.soft.fpr[i],
&sc->sc_fpregs[i]);
__put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
}
err |= __put_user(current->thread.fpu.soft.fcr31, &sc->sc_fpc_csr);
err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
return err;
}
@ -109,10 +106,9 @@ int fpu_emulator_restore_context32(struct sigcontext32 *sc)
for (i = 0; i < 32; i+=2) {
err |=
__get_user(current->thread.fpu.soft.fpr[i],
&sc->sc_fpregs[i]);
__get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
}
err |= __get_user(current->thread.fpu.soft.fcr31, &sc->sc_fpc_csr);
err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
return err;
}

3
include/asm-mips/fpu.h
View file

@ -138,10 +138,9 @@ static inline fpureg_t *get_fpu_regs(struct task_struct *tsk)
if (cpu_has_fpu) {
if ((tsk == current) && __is_fpu_owner())
_save_fp(current);
return tsk->thread.fpu.hard.fpr;
}
return tsk->thread.fpu.soft.fpr;
return tsk->thread.fpu.fpr;
}
#endif /* _ASM_FPU_H */

4
include/asm-mips/fpu_emulator.h
View file

@ -12,8 +12,8 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Further private data for which no space exists in mips_fpu_soft_struct.
* This should be subsumed into the mips_fpu_soft_struct structure as
* Further private data for which no space exists in mips_fpu_struct.
* This should be subsumed into the mips_fpu_struct structure as
* defined in processor.h as soon as the absurd wired absolute assembler
* offsets become dynamic at compile time.
*

16
include/asm-mips/processor.h
View file

@ -71,11 +71,6 @@ extern unsigned int vced_count, vcei_count;
typedef __u64 fpureg_t;
struct mips_fpu_hard_struct {
fpureg_t fpr[NUM_FPU_REGS];
unsigned int fcr31;
};
/*
* It would be nice to add some more fields for emulator statistics, but there
* are a number of fixed offsets in offset.h and elsewhere that would have to
@ -83,18 +78,13 @@ struct mips_fpu_hard_struct {
* the FPU emulator for now. See asm-mips/fpu_emulator.h.
*/
struct mips_fpu_soft_struct {
struct mips_fpu_struct {
fpureg_t fpr[NUM_FPU_REGS];
unsigned int fcr31;
};
union mips_fpu_union {
struct mips_fpu_hard_struct hard;
struct mips_fpu_soft_struct soft;
};
#define INIT_FPU { \
{{0,},} \
{0,} \
}
#define NUM_DSP_REGS 6
@ -133,7 +123,7 @@ struct thread_struct {
unsigned long cp0_status;
/* Saved fpu/fpu emulator stuff. */
union mips_fpu_union fpu;
struct mips_fpu_struct fpu;
#ifdef CONFIG_MIPS_MT_FPAFF
/* Emulated instruction count */
unsigned long emulated_fp;