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-rw-r--r--arch/powerpc/Kconfig8
-rw-r--r--arch/powerpc/kernel/kprobes.c8
-rw-r--r--arch/powerpc/kernel/pci_64.c2
-rw-r--r--arch/powerpc/kernel/traps.c109
-rw-r--r--arch/powerpc/kernel/vdso.c7
-rw-r--r--arch/powerpc/lib/Makefile2
6 files changed, 95 insertions, 41 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 5f80f0b828f2..0b6325a77c75 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -492,6 +492,7 @@ config PPC_MAPLE
select PPC_NATIVE
select PPC_RTAS
select MMIO_NVRAM
+ select ATA_NONSTANDARD if ATA
default n
help
This option enables support for the Maple 970FX Evaluation Board.
@@ -533,12 +534,15 @@ config PPC_IBM_CELL_BLADE
select UDBG_RTAS_CONSOLE
config PPC_PS3
- bool "Sony PS3"
+ bool "Sony PS3 (incomplete)"
depends on PPC_MULTIPLATFORM && PPC64
select PPC_CELL
help
This option enables support for the Sony PS3 game console
and other platforms using the PS3 hypervisor.
+ Support for this platform is not yet complete, so
+ enabling this will not result in a bootable kernel on a
+ PS3 system.
config PPC_CELLEB
bool "Toshiba's Cell Reference Set 'Celleb' Architecture"
@@ -1202,7 +1206,7 @@ source "arch/powerpc/oprofile/Kconfig"
config KPROBES
bool "Kprobes (EXPERIMENTAL)"
- depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
+ depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
help
Kprobes allows you to trap at almost any kernel address and
execute a callback function. register_kprobe() establishes
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 4657563f8813..dd2886f97e98 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -46,8 +46,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
if ((unsigned long)p->addr & 0x03) {
printk("Attempt to register kprobe at an unaligned address\n");
ret = -EINVAL;
- } else if (IS_MTMSRD(insn) || IS_RFID(insn)) {
- printk("Cannot register a kprobe on rfid or mtmsrd\n");
+ } else if (IS_MTMSRD(insn) || IS_RFID(insn) || IS_RFI(insn)) {
+ printk("Cannot register a kprobe on rfi/rfid or mtmsr[d]\n");
ret = -EINVAL;
}
@@ -483,8 +483,12 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
/* setup return addr to the jprobe handler routine */
+#ifdef CONFIG_PPC64
regs->nip = (unsigned long)(((func_descr_t *)jp->entry)->entry);
regs->gpr[2] = (unsigned long)(((func_descr_t *)jp->entry)->toc);
+#else
+ regs->nip = (unsigned long)jp->entry;
+#endif
return 1;
}
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index b6d08738180b..6828df4afd99 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -1429,7 +1429,7 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
bus = pci_bus_b(ln);
- if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate))
+ if (in_bus >= bus->number && in_bus <= bus->subordinate)
break;
bus = NULL;
}
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6915b91868b8..dcc6f159fd94 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -535,34 +535,40 @@ static void emulate_single_step(struct pt_regs *regs)
}
}
-static void parse_fpe(struct pt_regs *regs)
+static inline int __parse_fpscr(unsigned long fpscr)
{
- int code = 0;
- unsigned long fpscr;
-
- flush_fp_to_thread(current);
-
- fpscr = current->thread.fpscr.val;
+ int ret = 0;
/* Invalid operation */
if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX))
- code = FPE_FLTINV;
+ ret = FPE_FLTINV;
/* Overflow */
else if ((fpscr & FPSCR_OE) && (fpscr & FPSCR_OX))
- code = FPE_FLTOVF;
+ ret = FPE_FLTOVF;
/* Underflow */
else if ((fpscr & FPSCR_UE) && (fpscr & FPSCR_UX))
- code = FPE_FLTUND;
+ ret = FPE_FLTUND;
/* Divide by zero */
else if ((fpscr & FPSCR_ZE) && (fpscr & FPSCR_ZX))
- code = FPE_FLTDIV;
+ ret = FPE_FLTDIV;
/* Inexact result */
else if ((fpscr & FPSCR_XE) && (fpscr & FPSCR_XX))
- code = FPE_FLTRES;
+ ret = FPE_FLTRES;
+
+ return ret;
+}
+
+static void parse_fpe(struct pt_regs *regs)
+{
+ int code = 0;
+
+ flush_fp_to_thread(current);
+
+ code = __parse_fpscr(current->thread.fpscr.val);
_exception(SIGFPE, regs, code, regs->nip);
}
@@ -739,20 +745,7 @@ void __kprobes program_check_exception(struct pt_regs *regs)
extern int do_mathemu(struct pt_regs *regs);
/* We can now get here via a FP Unavailable exception if the core
- * has no FPU, in that case no reason flags will be set */
-#ifdef CONFIG_MATH_EMULATION
- /* (reason & REASON_ILLEGAL) would be the obvious thing here,
- * but there seems to be a hardware bug on the 405GP (RevD)
- * that means ESR is sometimes set incorrectly - either to
- * ESR_DST (!?) or 0. In the process of chasing this with the
- * hardware people - not sure if it can happen on any illegal
- * instruction or only on FP instructions, whether there is a
- * pattern to occurences etc. -dgibson 31/Mar/2003 */
- if (!(reason & REASON_TRAP) && do_mathemu(regs) == 0) {
- emulate_single_step(regs);
- return;
- }
-#endif /* CONFIG_MATH_EMULATION */
+ * has no FPU, in that case the reason flags will be 0 */
if (reason & REASON_FP) {
/* IEEE FP exception */
@@ -778,6 +771,31 @@ void __kprobes program_check_exception(struct pt_regs *regs)
local_irq_enable();
+#ifdef CONFIG_MATH_EMULATION
+ /* (reason & REASON_ILLEGAL) would be the obvious thing here,
+ * but there seems to be a hardware bug on the 405GP (RevD)
+ * that means ESR is sometimes set incorrectly - either to
+ * ESR_DST (!?) or 0. In the process of chasing this with the
+ * hardware people - not sure if it can happen on any illegal
+ * instruction or only on FP instructions, whether there is a
+ * pattern to occurences etc. -dgibson 31/Mar/2003 */
+ switch (do_mathemu(regs)) {
+ case 0:
+ emulate_single_step(regs);
+ return;
+ case 1: {
+ int code = 0;
+ code = __parse_fpscr(current->thread.fpscr.val);
+ _exception(SIGFPE, regs, code, regs->nip);
+ return;
+ }
+ case -EFAULT:
+ _exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);
+ return;
+ }
+ /* fall through on any other errors */
+#endif /* CONFIG_MATH_EMULATION */
+
/* Try to emulate it if we should. */
if (reason & (REASON_ILLEGAL | REASON_PRIVILEGED)) {
switch (emulate_instruction(regs)) {
@@ -891,18 +909,39 @@ void SoftwareEmulation(struct pt_regs *regs)
#ifdef CONFIG_MATH_EMULATION
errcode = do_mathemu(regs);
+
+ switch (errcode) {
+ case 0:
+ emulate_single_step(regs);
+ return;
+ case 1: {
+ int code = 0;
+ code = __parse_fpscr(current->thread.fpscr.val);
+ _exception(SIGFPE, regs, code, regs->nip);
+ return;
+ }
+ case -EFAULT:
+ _exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);
+ return;
+ default:
+ _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
+ return;
+ }
+
#else
errcode = Soft_emulate_8xx(regs);
-#endif
- if (errcode) {
- if (errcode > 0)
- _exception(SIGFPE, regs, 0, 0);
- else if (errcode == -EFAULT)
- _exception(SIGSEGV, regs, 0, 0);
- else
- _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
- } else
+ switch (errcode) {
+ case 0:
emulate_single_step(regs);
+ return;
+ case 1:
+ _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
+ return;
+ case -EFAULT:
+ _exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);
+ return;
+ }
+#endif
}
#endif /* CONFIG_8xx */
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index a4b28c73bba0..ae0ede19879d 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -284,6 +284,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
* pages though
*/
vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ vma->vm_flags |= VM_ALWAYSDUMP;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
vma->vm_ops = &vdso_vmops;
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index e2d414160c83..4b1ba49fbd9e 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -16,11 +16,11 @@ obj-$(CONFIG_PPC64) += checksum_64.o copypage_64.o copyuser_64.o \
strcase.o
obj-$(CONFIG_QUICC_ENGINE) += rheap.o
obj-$(CONFIG_XMON) += sstep.o
+obj-$(CONFIG_KPROBES) += sstep.o
obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o
ifeq ($(CONFIG_PPC64),y)
obj-$(CONFIG_SMP) += locks.o
-obj-$(CONFIG_DEBUG_KERNEL) += sstep.o
endif
# Temporary hack until we have migrated to asm-powerpc
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 13:24:39 +0000