We are going to change where the floating point registers are stored
in the thread_struct, so in preparation add some macros to access the
floating point registers. Update all code to use these new macros.
Signed-off-by: Michael Neuling <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/align.c | 6 ++--
arch/powerpc/kernel/asm-offsets.c | 2 -
arch/powerpc/kernel/process.c | 5 ++-
arch/powerpc/kernel/ptrace.c | 14 +++++----
arch/powerpc/kernel/ptrace32.c | 9 ++++--
arch/powerpc/kernel/signal_32.c | 6 ++--
arch/powerpc/kernel/signal_64.c | 13 +++++---
arch/powerpc/kernel/softemu8xx.c | 4 +-
arch/powerpc/math-emu/math.c | 56 +++++++++++++++++++-------------------
include/asm-powerpc/ppc_asm.h | 5 ++-
include/asm-powerpc/processor.h | 7 ++++
11 files changed, 71 insertions(+), 56 deletions(-)
Index: linux-2.6-ozlabs/arch/powerpc/kernel/align.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/align.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/align.c
@@ -366,7 +366,7 @@ static int emulate_multiple(struct pt_re
static int emulate_fp_pair(struct pt_regs *regs, unsigned char __user *addr,
unsigned int reg, unsigned int flags)
{
- char *ptr = (char *) ¤t->thread.fpr[reg];
+ char *ptr = (char *) ¤t->thread.TS_FPR(reg);
int i, ret;
if (!(flags & F))
@@ -784,7 +784,7 @@ int fix_alignment(struct pt_regs *regs)
return -EFAULT;
}
} else if (flags & F) {
- data.dd = current->thread.fpr[reg];
+ data.dd = current->thread.TS_FPR(reg);
if (flags & S) {
/* Single-precision FP store requires conversion... */
#ifdef CONFIG_PPC_FPU
@@ -862,7 +862,7 @@ int fix_alignment(struct pt_regs *regs)
if (unlikely(ret))
return -EFAULT;
} else if (flags & F)
- current->thread.fpr[reg] = data.dd;
+ current->thread.TS_FPR(reg) = data.dd;
else
regs->gpr[reg] = data.ll;
Index: linux-2.6-ozlabs/arch/powerpc/kernel/asm-offsets.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/asm-offsets.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/asm-offsets.c
@@ -66,7 +66,7 @@ int main(void)
DEFINE(KSP_LIMIT, offsetof(struct thread_struct, ksp_limit));
DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
- DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
+ DEFINE(THREAD_FPR0, offsetof(struct thread_struct, TS_FPR(0)));
DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
#ifdef CONFIG_ALTIVEC
DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
Index: linux-2.6-ozlabs/arch/powerpc/kernel/process.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/process.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/process.c
@@ -110,7 +110,7 @@ int dump_task_fpu(struct task_struct *ts
return 0;
flush_fp_to_thread(current);
- memcpy(fpregs, &tsk->thread.fpr[0], sizeof(*fpregs));
+ memcpy(fpregs, &tsk->thread.TS_FPR(0), sizeof(*fpregs));
return 1;
}
@@ -689,7 +689,8 @@ void start_thread(struct pt_regs *regs,
#endif
discard_lazy_cpu_state();
- memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
+ memset(current->thread.TS_FPRSTART, 0,
+ sizeof(current->thread.TS_FPRSTART));
current->thread.fpscr.val = 0;
#ifdef CONFIG_ALTIVEC
memset(current->thread.vr, 0, sizeof(current->thread.vr));
Index: linux-2.6-ozlabs/arch/powerpc/kernel/ptrace.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/ptrace.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/ptrace.c
@@ -218,10 +218,10 @@ static int fpr_get(struct task_struct *t
flush_fp_to_thread(target);
BUILD_BUG_ON(offsetof(struct thread_struct, fpscr) !=
- offsetof(struct thread_struct, fpr[32]));
+ offsetof(struct thread_struct, TS_FPR(32)));
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- &target->thread.fpr, 0, -1);
+ &target->thread.TS_FPRSTART, 0, -1);
}
static int fpr_set(struct task_struct *target, const struct user_regset
*regset,
@@ -231,10 +231,10 @@ static int fpr_set(struct task_struct *t
flush_fp_to_thread(target);
BUILD_BUG_ON(offsetof(struct thread_struct, fpscr) !=
- offsetof(struct thread_struct, fpr[32]));
+ offsetof(struct thread_struct, TS_FPR(32)));
return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &target->thread.fpr, 0, -1);
+ &target->thread.TS_FPRSTART, 0, -1);
}
@@ -728,7 +728,8 @@ long arch_ptrace(struct task_struct *chi
tmp = ptrace_get_reg(child, (int) index);
} else {
flush_fp_to_thread(child);
- tmp = ((unsigned long *)child->thread.fpr)[index -
PT_FPR0];
+ tmp = ((unsigned long *)child->thread.TS_FPRSTART)
+ [TS_FPRSPACING * (index - PT_FPR0)];
}
ret = put_user(tmp,(unsigned long __user *) data);
break;
@@ -755,7 +756,8 @@ long arch_ptrace(struct task_struct *chi
ret = ptrace_put_reg(child, index, data);
} else {
flush_fp_to_thread(child);
- ((unsigned long *)child->thread.fpr)[index - PT_FPR0] =
data;
+ ((unsigned long *)child->thread.TS_FPRSTART)
+ [TS_FPRSPACING * (index - PT_FPR0)] = data;
ret = 0;
}
break;
Index: linux-2.6-ozlabs/arch/powerpc/kernel/ptrace32.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/ptrace32.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/ptrace32.c
@@ -122,7 +122,8 @@ long compat_arch_ptrace(struct task_stru
* to be an array of unsigned int (32 bits) - the
* index passed in is based on this assumption.
*/
- tmp = ((unsigned int *)child->thread.fpr)[index -
PT_FPR0];
+ tmp = ((unsigned int *)child->thread.TS_FPRSTART)
+ [TS_FPRSPACING * (index - PT_FPR0)];
}
ret = put_user((unsigned int)tmp, (u32 __user *)data);
break;
@@ -162,7 +163,8 @@ long compat_arch_ptrace(struct task_stru
CHECK_FULL_REGS(child->thread.regs);
if (numReg >= PT_FPR0) {
flush_fp_to_thread(child);
- tmp = ((unsigned long int *)child->thread.fpr)[numReg -
PT_FPR0];
+ tmp = ((unsigned long int *)child->thread.TS_FPRSTART)
+ [TS_FPRSPACING * (numReg - PT_FPR0)];
} else { /* register within PT_REGS struct */
tmp = ptrace_get_reg(child, numReg);
}
@@ -217,7 +219,8 @@ long compat_arch_ptrace(struct task_stru
* to be an array of unsigned int (32 bits) - the
* index passed in is based on this assumption.
*/
- ((unsigned int *)child->thread.fpr)[index - PT_FPR0] =
data;
+ ((unsigned int *)child->thread.TS_FPRSTART)
+ [TS_FPRSPACING * (index - PT_FPR0)] = data;
ret = 0;
}
break;
Index: linux-2.6-ozlabs/arch/powerpc/kernel/signal_32.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/signal_32.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/signal_32.c
@@ -343,7 +343,7 @@ static int save_user_regs(struct pt_regs
/* save general and floating-point registers */
if (save_general_regs(regs, frame) ||
- __copy_to_user(&frame->mc_fregs, current->thread.fpr,
+ __copy_to_user(&frame->mc_fregs, current->thread.TS_FPRSTART,
ELF_NFPREG * sizeof(double)))
return 1;
@@ -431,7 +431,7 @@ static long restore_user_regs(struct pt_
/*
* Do this before updating the thread state in
- * current->thread.fpr/vr/evr. That way, if we get preempted
+ * current->thread.FPR/vr/evr. That way, if we get preempted
* and another task grabs the FPU/Altivec/SPE, it won't be
* tempted to save the current CPU state into the thread_struct
* and corrupt what we are writing there.
@@ -441,7 +441,7 @@ static long restore_user_regs(struct pt_
/* force the process to reload the FP registers from
current->thread when it next does FP instructions */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
- if (__copy_from_user(current->thread.fpr, &sr->mc_fregs,
+ if (__copy_from_user(current->thread.TS_FPRSTART, &sr->mc_fregs,
sizeof(sr->mc_fregs)))
return 1;
Index: linux-2.6-ozlabs/arch/powerpc/kernel/signal_64.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/signal_64.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/signal_64.c
@@ -116,7 +116,8 @@ static long setup_sigcontext(struct sigc
WARN_ON(!FULL_REGS(regs));
err |= __copy_to_user(&sc->gp_regs, regs, GP_REGS_SIZE);
err |= __put_user(msr, &sc->gp_regs[PT_MSR]);
- err |= __copy_to_user(&sc->fp_regs, ¤t->thread.fpr, FP_REGS_SIZE);
+ err |= __copy_to_user(&sc->fp_regs, ¤t->thread.TS_FPRSTART,
+ FP_REGS_SIZE);
err |= __put_user(signr, &sc->signal);
err |= __put_user(handler, &sc->handler);
if (set != NULL)
@@ -168,7 +169,7 @@ static long restore_sigcontext(struct pt
/*
* Do this before updating the thread state in
- * current->thread.fpr/vr. That way, if we get preempted
+ * current->thread.TS_FPR/vr. That way, if we get preempted
* and another task grabs the FPU/Altivec, it won't be
* tempted to save the current CPU state into the thread_struct
* and corrupt what we are writing there.
@@ -177,12 +178,14 @@ static long restore_sigcontext(struct pt
/*
* Force reload of FP/VEC.
- * This has to be done before copying stuff into current->thread.fpr/vr
- * for the reasons explained in the previous comment.
+ * This has to be done before copying stuff into
+ * current->thread.TS_FPR/vr for the reasons explained in the
+ * previous comment.
*/
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);
- err |= __copy_from_user(¤t->thread.fpr, &sc->fp_regs,
FP_REGS_SIZE);
+ err |= __copy_from_user(¤t->thread.TS_FPRSTART, &sc->fp_regs,
+ FP_REGS_SIZE);
#ifdef CONFIG_ALTIVEC
err |= __get_user(v_regs, &sc->v_regs);
Index: linux-2.6-ozlabs/arch/powerpc/kernel/softemu8xx.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/kernel/softemu8xx.c
+++ linux-2.6-ozlabs/arch/powerpc/kernel/softemu8xx.c
@@ -124,7 +124,7 @@ int Soft_emulate_8xx(struct pt_regs *reg
disp = instword & 0xffff;
ea = (u32 *)(regs->gpr[idxreg] + disp);
- ip = (u32 *)¤t->thread.fpr[flreg];
+ ip = (u32 *)¤t->thread.TS_FPR(flreg);
switch ( inst )
{
@@ -168,7 +168,7 @@ int Soft_emulate_8xx(struct pt_regs *reg
break;
case FMR:
/* assume this is a fp move -- Cort */
- memcpy(ip, ¤t->thread.fpr[(instword>>11)&0x1f],
+ memcpy(ip, ¤t->thread.TS_FPR((instword>>11)&0x1f),
sizeof(double));
break;
default:
Index: linux-2.6-ozlabs/arch/powerpc/math-emu/math.c
===================================================================
--- linux-2.6-ozlabs.orig/arch/powerpc/math-emu/math.c
+++ linux-2.6-ozlabs/arch/powerpc/math-emu/math.c
@@ -230,14 +230,14 @@ do_mathemu(struct pt_regs *regs)
case LFD:
idx = (insn >> 16) & 0x1f;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
lfd(op0, op1, op2, op3);
break;
case LFDU:
idx = (insn >> 16) & 0x1f;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
lfd(op0, op1, op2, op3);
regs->gpr[idx] = (unsigned long)op1;
@@ -245,21 +245,21 @@ do_mathemu(struct pt_regs *regs)
case STFD:
idx = (insn >> 16) & 0x1f;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
stfd(op0, op1, op2, op3);
break;
case STFDU:
idx = (insn >> 16) & 0x1f;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
stfd(op0, op1, op2, op3);
regs->gpr[idx] = (unsigned long)op1;
break;
case OP63:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
fmr(op0, op1, op2, op3);
break;
default:
@@ -356,28 +356,28 @@ do_mathemu(struct pt_regs *regs)
switch (type) {
case AB:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 16) & 0x1f];
- op2 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
+ op2 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
break;
case AC:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 16) & 0x1f];
- op2 = (void *)¤t->thread.fpr[(insn >> 6) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
+ op2 = (void *)¤t->thread.TS_FPR((insn >> 6) & 0x1f);
break;
case ABC:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 16) & 0x1f];
- op2 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
- op3 = (void *)¤t->thread.fpr[(insn >> 6) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
+ op2 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
+ op3 = (void *)¤t->thread.TS_FPR((insn >> 6) & 0x1f);
break;
case D:
idx = (insn >> 16) & 0x1f;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0) + sdisp);
break;
@@ -387,27 +387,27 @@ do_mathemu(struct pt_regs *regs)
goto illegal;
sdisp = (insn & 0xffff);
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)(regs->gpr[idx] + sdisp);
break;
case X:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
break;
case XA:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 16) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
break;
case XB:
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
- op1 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
break;
case XE:
idx = (insn >> 16) & 0x1f;
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
if (!idx) {
if (((insn >> 1) & 0x3ff) == STFIWX)
op1 = (void *)(regs->gpr[(insn >> 11) & 0x1f]);
@@ -421,7 +421,7 @@ do_mathemu(struct pt_regs *regs)
case XEU:
idx = (insn >> 16) & 0x1f;
- op0 = (void *)¤t->thread.fpr[(insn >> 21) & 0x1f];
+ op0 = (void *)¤t->thread.TS_FPR((insn >> 21) & 0x1f);
op1 = (void *)((idx ? regs->gpr[idx] : 0)
+ regs->gpr[(insn >> 11) & 0x1f]);
break;
@@ -429,8 +429,8 @@ do_mathemu(struct pt_regs *regs)
case XCR:
op0 = (void *)®s->ccr;
op1 = (void *)((insn >> 23) & 0x7);
- op2 = (void *)¤t->thread.fpr[(insn >> 16) & 0x1f];
- op3 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
+ op2 = (void *)¤t->thread.TS_FPR((insn >> 16) & 0x1f);
+ op3 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
break;
case XCRL:
@@ -450,7 +450,7 @@ do_mathemu(struct pt_regs *regs)
case XFLB:
op0 = (void *)((insn >> 17) & 0xff);
- op1 = (void *)¤t->thread.fpr[(insn >> 11) & 0x1f];
+ op1 = (void *)¤t->thread.TS_FPR((insn >> 11) & 0x1f);
break;
default:
Index: linux-2.6-ozlabs/include/asm-powerpc/ppc_asm.h
===================================================================
--- linux-2.6-ozlabs.orig/include/asm-powerpc/ppc_asm.h
+++ linux-2.6-ozlabs/include/asm-powerpc/ppc_asm.h
@@ -6,6 +6,7 @@
#include <linux/stringify.h>
#include <asm/asm-compat.h>
+#include <asm/processor.h>
#ifndef __ASSEMBLY__
#error __FILE__ should only be used in assembler files
@@ -83,13 +84,13 @@ END_FTR_SECTION_IFCLR(CPU_FTR_PURR);
#define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
#define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
-#define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*(n)(base)
+#define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*TS_FPRSPACING*(n)(base)
#define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
#define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
#define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
#define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
#define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
-#define REST_FPR(n, base) lfd n,THREAD_FPR0+8*(n)(base)
+#define REST_FPR(n, base) lfd n,THREAD_FPR0+8*TS_FPRSPACING*(n)(base)
#define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
#define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
#define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
Index: linux-2.6-ozlabs/include/asm-powerpc/processor.h
===================================================================
--- linux-2.6-ozlabs.orig/include/asm-powerpc/processor.h
+++ linux-2.6-ozlabs/include/asm-powerpc/processor.h
@@ -136,6 +136,9 @@ typedef struct {
unsigned long seg;
} mm_segment_t;
+#define TS_FPR(i) fpr[i]
+#define TS_FPRSTART fpr
+
struct thread_struct {
unsigned long ksp; /* Kernel stack pointer */
unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */
@@ -197,12 +200,13 @@ struct thread_struct {
.fpexc_mode = MSR_FE0 | MSR_FE1, \
}
#else
+#define FPVSR_INIT_THREAD .fpr = {0}
#define INIT_THREAD { \
.ksp = INIT_SP, \
.ksp_limit = INIT_SP_LIMIT, \
.regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \
.fs = KERNEL_DS, \
- .fpr = {0}, \
+ FPVSR_INIT_THREAD, \
.fpscr = { .val = 0, }, \
.fpexc_mode = 0, \
}
@@ -289,4 +293,5 @@ static inline void prefetchw(const void
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
+#define TS_FPRSPACING 1
#endif /* _ASM_POWERPC_PROCESSOR_H */
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