powerpc/8xx: Remove last traces of 8XX_MINIMAL_FPEMU

The Kconfig symbol 8XX_MINIMAL_FPEMU was removed in commit 968219fa33
("powerpc/8xx: Remove 8xx specific "minimal FPU emulation""). But that
commit didn't remove all code depending on that symbol. Do so now.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/emulated_ops.h b/arch/powerpc/include/asm/emulated_ops.h
index 63f2a22..5a8b82a 100644 (file)
--- a/arch/powerpc/include/asm/emulated_ops.h
+++ b/arch/powerpc/include/asm/emulated_ops.h
@@ -46,8 +46,6 @@ extern struct ppc_emulated {
        struct ppc_emulated_entry unaligned;
 #ifdef CONFIG_MATH_EMULATION
        struct ppc_emulated_entry math;
-#elif defined(CONFIG_8XX_MINIMAL_FPEMU)
-       struct ppc_emulated_entry 8xx;
 #endif
 #ifdef CONFIG_VSX
        struct ppc_emulated_entry vsx;

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 725c2fb..5b280f5 100644 (file)
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -117,8 +117,6 @@ obj-$(CONFIG_DYNAMIC_FTRACE)        += ftrace.o
 obj-$(CONFIG_FUNCTION_GRAPH_TRACER)    += ftrace.o
 obj-$(CONFIG_FTRACE_SYSCALLS)  += ftrace.o
 
-obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o
-
 ifneq ($(CONFIG_PPC_INDIRECT_PIO),y)
 obj-y                          += iomap.o
 endif

diff --git a/arch/powerpc/kernel/softemu8xx.c b/arch/powerpc/kernel/softemu8xx.c
deleted file mode 100644 (file)
index 29b2f81..0000000
--- a/arch/powerpc/kernel/softemu8xx.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Software emulation of some PPC instructions for the 8xx core.
- *
- * Copyright (C) 1998 Dan Malek (dmalek@jlc.net)
- *
- * Software floating emuation for the MPC8xx processor.  I did this mostly
- * because it was easier than trying to get the libraries compiled for
- * software floating point.  The goal is still to get the libraries done,
- * but I lost patience and needed some hacks to at least get init and
- * shells running.  The first problem is the setjmp/longjmp that save
- * and restore the floating point registers.
- *
- * For this emulation, our working registers are found on the register
- * save area.
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/interrupt.h>
-
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-/* Eventually we may need a look-up table, but this works for now.
-*/
-#define LFS    48
-#define LFD    50
-#define LFDU   51
-#define STFD   54
-#define STFDU  55
-#define FMR    63
-
-void print_8xx_pte(struct mm_struct *mm, unsigned long addr)
-{
-       pgd_t *pgd;
-       pmd_t *pmd;
-       pte_t *pte;
-
-       printk(" pte @ 0x%8lx: ", addr);
-       pgd = pgd_offset(mm, addr & PAGE_MASK);
-       if (pgd) {
-               pmd = pmd_offset(pud_offset(pgd, addr & PAGE_MASK),
-                                addr & PAGE_MASK);
-               if (pmd && pmd_present(*pmd)) {
-                       pte = pte_offset_kernel(pmd, addr & PAGE_MASK);
-                       if (pte) {
-                               printk(" (0x%08lx)->(0x%08lx)->0x%08lx\n",
-                                       (long)pgd, (long)pte, (long)pte_val(*pte));
-#define pp ((long)pte_val(*pte))
-                               printk(" RPN: %05lx PP: %lx SPS: %lx SH: %lx "
-                                      "CI: %lx v: %lx\n",
-                                      pp>>12,    /* rpn */
-                                      (pp>>10)&3, /* pp */
-                                      (pp>>3)&1, /* small */
-                                      (pp>>2)&1, /* shared */
-                                      (pp>>1)&1, /* cache inhibit */
-                                      pp&1       /* valid */
-                                      );
-#undef pp
-                       }
-                       else {
-                               printk("no pte\n");
-                       }
-               }
-               else {
-                       printk("no pmd\n");
-               }
-       }
-       else {
-               printk("no pgd\n");
-       }
-}
-
-int get_8xx_pte(struct mm_struct *mm, unsigned long addr)
-{
-       pgd_t *pgd;
-       pmd_t *pmd;
-       pte_t *pte;
-       int retval = 0;
-
-       pgd = pgd_offset(mm, addr & PAGE_MASK);
-       if (pgd) {
-               pmd = pmd_offset(pud_offset(pgd, addr & PAGE_MASK),
-                                addr & PAGE_MASK);
-               if (pmd && pmd_present(*pmd)) {
-                       pte = pte_offset_kernel(pmd, addr & PAGE_MASK);
-                       if (pte) {
-                               retval = (int)pte_val(*pte);
-                       }
-               }
-       }
-       return retval;
-}
-
-/*
- * We return 0 on success, 1 on unimplemented instruction, and EFAULT
- * if a load/store faulted.
- */
-int Soft_emulate_8xx(struct pt_regs *regs)
-{
-       u32 inst, instword;
-       u32 flreg, idxreg, disp;
-       int retval;
-       s16 sdisp;
-       u32 *ea, *ip;
-
-       retval = 0;
-
-       instword = *((u32 *)regs->nip);
-       inst = instword >> 26;
-
-       flreg = (instword >> 21) & 0x1f;
-       idxreg = (instword >> 16) & 0x1f;
-       disp = instword & 0xffff;
-
-       ea = (u32 *)(regs->gpr[idxreg] + disp);
-       ip = (u32 *)&current->thread.TS_FPR(flreg);
-
-       switch ( inst )
-       {
-       case LFD:
-               /* this is a 16 bit quantity that is sign extended
-                * so use a signed short here -- Cort
-                */
-               sdisp = (instword & 0xffff);
-               ea = (u32 *)(regs->gpr[idxreg] + sdisp);
-               if (copy_from_user(ip, ea, sizeof(double)))
-                       retval = -EFAULT;
-               break;
-
-       case LFDU:
-               if (copy_from_user(ip, ea, sizeof(double)))
-                       retval = -EFAULT;
-               else
-                       regs->gpr[idxreg] = (u32)ea;
-               break;
-       case LFS:
-               sdisp = (instword & 0xffff);
-               ea = (u32 *)(regs->gpr[idxreg] + sdisp);
-               if (copy_from_user(ip, ea, sizeof(float)))
-                       retval = -EFAULT;
-               break;
-       case STFD:
-               /* this is a 16 bit quantity that is sign extended
-                * so use a signed short here -- Cort
-                */
-               sdisp = (instword & 0xffff);
-               ea = (u32 *)(regs->gpr[idxreg] + sdisp);
-               if (copy_to_user(ea, ip, sizeof(double)))
-                       retval = -EFAULT;
-               break;
-
-       case STFDU:
-               if (copy_to_user(ea, ip, sizeof(double)))
-                       retval = -EFAULT;
-               else
-                       regs->gpr[idxreg] = (u32)ea;
-               break;
-       case FMR:
-               /* assume this is a fp move -- Cort */
-               memcpy(ip, &current->thread.TS_FPR((instword>>11)&0x1f),
-                      sizeof(double));
-               break;
-       default:
-               retval = 1;
-               printk("Bad emulation %s/%d\n"
-                      " NIP: %08lx instruction: %08x opcode: %x "
-                      "A: %x B: %x C: %x code: %x rc: %x\n",
-                      current->comm,current->pid,
-                      regs->nip,
-                      instword,inst,
-                      (instword>>16)&0x1f,
-                      (instword>>11)&0x1f,
-                      (instword>>6)&0x1f,
-                      (instword>>1)&0x3ff,
-                      instword&1);
-               {
-                       int pa;
-                       print_8xx_pte(current->mm,regs->nip);
-                       pa = get_8xx_pte(current->mm,regs->nip) & PAGE_MASK;
-                       pa |= (regs->nip & ~PAGE_MASK);
-                       pa = (unsigned long)__va(pa);
-                       printk("Kernel VA for NIP %x ", pa);
-                       print_8xx_pte(current->mm,pa);
-               }
-       }
-
-       if (retval == 0)
-               regs->nip += 4;
-
-       return retval;
-}