diff options
author | Michael Neuling <mikey@neuling.org> | 2008-06-26 17:07:48 +1000 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2008-07-01 11:28:43 +1000 |
commit | 9c75a31c3525a127f70b919856e32be3d8b03755 (patch) | |
tree | 3beee76d3dd4a55af868b5edfbef80c911819fed /arch/powerpc | |
parent | 9e7511861c4f8d35852a3721c5bcd92661cb4c9f (diff) |
powerpc: Add macros to access floating point registers in thread_struct.
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 <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/kernel/align.c | 6 | ||||
-rw-r--r-- | arch/powerpc/kernel/process.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/ptrace.c | 10 | ||||
-rw-r--r-- | arch/powerpc/kernel/ptrace32.c | 14 | ||||
-rw-r--r-- | arch/powerpc/kernel/softemu8xx.c | 4 | ||||
-rw-r--r-- | arch/powerpc/math-emu/math.c | 56 |
6 files changed, 51 insertions, 41 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index e06f75daeba3..c95954c81454 100644 --- a/arch/powerpc/kernel/align.c +++ b/arch/powerpc/kernel/align.c @@ -366,7 +366,7 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr, 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; diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 7de41c3948ec..582df70439cb 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -110,7 +110,7 @@ int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs) 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; } diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 2a9fe97e4521..59ff08704e94 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -218,7 +218,7 @@ static int fpr_get(struct task_struct *target, const struct user_regset *regset, 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); @@ -231,7 +231,7 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset, 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); @@ -728,7 +728,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 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.fpr) + [TS_FPRWIDTH * (index - PT_FPR0)]; } ret = put_user(tmp,(unsigned long __user *) data); break; @@ -755,7 +756,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 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.fpr) + [TS_FPRWIDTH * (index - PT_FPR0)] = data; ret = 0; } break; diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 4c1de6af4c09..67bf1a1e7e14 100644 --- a/arch/powerpc/kernel/ptrace32.c +++ b/arch/powerpc/kernel/ptrace32.c @@ -64,6 +64,11 @@ static long compat_ptrace_old(struct task_struct *child, long request, return -EPERM; } +/* Macros to workout the correct index for the FPR in the thread struct */ +#define FPRNUMBER(i) (((i) - PT_FPR0) >> 1) +#define FPRHALF(i) (((i) - PT_FPR0) & 1) +#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) + FPRHALF(i) + long compat_arch_ptrace(struct task_struct *child, compat_long_t request, compat_ulong_t caddr, compat_ulong_t cdata) { @@ -122,7 +127,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, * 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.fpr) + [FPRINDEX(index)]; } ret = put_user((unsigned int)tmp, (u32 __user *)data); break; @@ -162,7 +168,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 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.fpr) + [FPRINDEX(numReg)]; } else { /* register within PT_REGS struct */ tmp = ptrace_get_reg(child, numReg); } @@ -217,7 +224,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, * 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.fpr) + [FPRINDEX(index)] = data; ret = 0; } break; diff --git a/arch/powerpc/kernel/softemu8xx.c b/arch/powerpc/kernel/softemu8xx.c index 67d6f6890edc..c906c4bf6835 100644 --- a/arch/powerpc/kernel/softemu8xx.c +++ b/arch/powerpc/kernel/softemu8xx.c @@ -124,7 +124,7 @@ int Soft_emulate_8xx(struct pt_regs *regs) 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 *regs) 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: diff --git a/arch/powerpc/math-emu/math.c b/arch/powerpc/math-emu/math.c index 381306bb1590..29e545e0272e 100644 --- a/arch/powerpc/math-emu/math.c +++ b/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: |