powerpc: Use pr_fmt in module loader code
Use pr_fmt to give some context to the error messages in the module code, and convert open coded debug printk to pr_debug. Use pr_err for error messages. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anton Blanchard
Michael Ellerman
Родитель
9d57472f61
Коммит
c7d1f6afe0
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@ -15,6 +15,9 @@
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/moduleloader.h>
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#include <linux/elf.h>
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@ -28,12 +31,6 @@
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#include <linux/sort.h>
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#include <asm/setup.h>
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#if 0
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#define DEBUGP printk
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#else
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#define DEBUGP(fmt , ...)
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#endif
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/* Count how many different relocations (different symbol, different
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addend) */
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static unsigned int count_relocs(const Elf32_Rela *rela, unsigned int num)
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@ -121,8 +118,8 @@ static unsigned long get_plt_size(const Elf32_Ehdr *hdr,
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continue;
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if (sechdrs[i].sh_type == SHT_RELA) {
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DEBUGP("Found relocations in section %u\n", i);
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DEBUGP("Ptr: %p. Number: %u\n",
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pr_debug("Found relocations in section %u\n", i);
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pr_debug("Ptr: %p. Number: %u\n",
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(void *)hdr + sechdrs[i].sh_offset,
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sechdrs[i].sh_size / sizeof(Elf32_Rela));
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@ -161,7 +158,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr,
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me->arch.core_plt_section = i;
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}
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if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
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printk("Module doesn't contain .plt or .init.plt sections.\n");
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pr_err("Module doesn't contain .plt or .init.plt sections.\n");
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return -ENOEXEC;
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}
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@ -189,7 +186,7 @@ static uint32_t do_plt_call(void *location,
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{
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struct ppc_plt_entry *entry;
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DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
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pr_debug("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
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/* Init, or core PLT? */
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if (location >= mod->module_core
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&& location < mod->module_core + mod->core_size)
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@ -208,7 +205,7 @@ static uint32_t do_plt_call(void *location,
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entry->jump[2] = 0x7d8903a6; /* mtctr r12 */
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entry->jump[3] = 0x4e800420; /* bctr */
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DEBUGP("Initialized plt for 0x%x at %p\n", val, entry);
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pr_debug("Initialized plt for 0x%x at %p\n", val, entry);
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return (uint32_t)entry;
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}
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@ -224,7 +221,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
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uint32_t *location;
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uint32_t value;
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DEBUGP("Applying ADD relocate section %u to %u\n", relsec,
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pr_debug("Applying ADD relocate section %u to %u\n", relsec,
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sechdrs[relsec].sh_info);
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for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) {
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/* This is where to make the change */
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@ -268,17 +265,17 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
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sechdrs, module);
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/* Only replace bits 2 through 26 */
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DEBUGP("REL24 value = %08X. location = %08X\n",
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pr_debug("REL24 value = %08X. location = %08X\n",
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value, (uint32_t)location);
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DEBUGP("Location before: %08X.\n",
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pr_debug("Location before: %08X.\n",
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*(uint32_t *)location);
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*(uint32_t *)location
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= (*(uint32_t *)location & ~0x03fffffc)
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| ((value - (uint32_t)location)
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& 0x03fffffc);
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DEBUGP("Location after: %08X.\n",
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pr_debug("Location after: %08X.\n",
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*(uint32_t *)location);
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DEBUGP("ie. jump to %08X+%08X = %08X\n",
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pr_debug("ie. jump to %08X+%08X = %08X\n",
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*(uint32_t *)location & 0x03fffffc,
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(uint32_t)location,
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(*(uint32_t *)location & 0x03fffffc)
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@ -291,7 +288,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
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break;
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default:
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printk("%s: unknown ADD relocation: %u\n",
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pr_err("%s: unknown ADD relocation: %u\n",
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module->name,
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ELF32_R_TYPE(rela[i].r_info));
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return -ENOEXEC;
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@ -15,6 +15,9 @@
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/elf.h>
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#include <linux/moduleloader.h>
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@ -36,11 +39,6 @@
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Using a magic allocator which places modules within 32MB solves
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this, and makes other things simpler. Anton?
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--RR. */
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#if 0
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#define DEBUGP printk
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#else
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#define DEBUGP(fmt , ...)
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#endif
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#if defined(_CALL_ELF) && _CALL_ELF == 2
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#define R2_STACK_OFFSET 24
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@ -279,8 +277,8 @@ static unsigned long get_stubs_size(const Elf64_Ehdr *hdr,
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/* Every relocated section... */
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for (i = 1; i < hdr->e_shnum; i++) {
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if (sechdrs[i].sh_type == SHT_RELA) {
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DEBUGP("Found relocations in section %u\n", i);
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DEBUGP("Ptr: %p. Number: %lu\n",
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pr_debug("Found relocations in section %u\n", i);
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pr_debug("Ptr: %p. Number: %Lu\n",
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(void *)sechdrs[i].sh_addr,
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sechdrs[i].sh_size / sizeof(Elf64_Rela));
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@ -304,7 +302,7 @@ static unsigned long get_stubs_size(const Elf64_Ehdr *hdr,
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relocs++;
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#endif
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DEBUGP("Looks like a total of %lu stubs, max\n", relocs);
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pr_debug("Looks like a total of %lu stubs, max\n", relocs);
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return relocs * sizeof(struct ppc64_stub_entry);
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}
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@ -390,7 +388,7 @@ int module_frob_arch_sections(Elf64_Ehdr *hdr,
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}
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if (!me->arch.stubs_section) {
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printk("%s: doesn't contain .stubs.\n", me->name);
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pr_err("%s: doesn't contain .stubs.\n", me->name);
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return -ENOEXEC;
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}
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@ -434,11 +432,11 @@ static inline int create_stub(Elf64_Shdr *sechdrs,
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/* Stub uses address relative to r2. */
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reladdr = (unsigned long)entry - my_r2(sechdrs, me);
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if (reladdr > 0x7FFFFFFF || reladdr < -(0x80000000L)) {
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printk("%s: Address %p of stub out of range of %p.\n",
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pr_err("%s: Address %p of stub out of range of %p.\n",
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me->name, (void *)reladdr, (void *)my_r2);
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return 0;
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}
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DEBUGP("Stub %p get data from reladdr %li\n", entry, reladdr);
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pr_debug("Stub %p get data from reladdr %li\n", entry, reladdr);
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entry->jump[0] |= PPC_HA(reladdr);
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entry->jump[1] |= PPC_LO(reladdr);
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@ -477,7 +475,7 @@ static unsigned long stub_for_addr(Elf64_Shdr *sechdrs,
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static int restore_r2(u32 *instruction, struct module *me)
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{
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if (*instruction != PPC_INST_NOP) {
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printk("%s: Expect noop after relocate, got %08x\n",
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pr_err("%s: Expect noop after relocate, got %08x\n",
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me->name, *instruction);
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return 0;
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}
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@ -498,7 +496,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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unsigned long *location;
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unsigned long value;
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DEBUGP("Applying ADD relocate section %u to %u\n", relsec,
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pr_debug("Applying ADD relocate section %u to %u\n", relsec,
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sechdrs[relsec].sh_info);
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/* First time we're called, we can fix up .TOC. */
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@ -519,7 +517,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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sym = (Elf64_Sym *)sechdrs[symindex].sh_addr
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+ ELF64_R_SYM(rela[i].r_info);
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DEBUGP("RELOC at %p: %li-type as %s (%lu) + %li\n",
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pr_debug("RELOC at %p: %li-type as %s (0x%lx) + %li\n",
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location, (long)ELF64_R_TYPE(rela[i].r_info),
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strtab + sym->st_name, (unsigned long)sym->st_value,
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(long)rela[i].r_addend);
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@ -546,7 +544,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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/* Subtract TOC pointer */
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value -= my_r2(sechdrs, me);
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if (value + 0x8000 > 0xffff) {
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printk("%s: bad TOC16 relocation (%lu)\n",
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pr_err("%s: bad TOC16 relocation (0x%lx)\n",
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me->name, value);
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return -ENOEXEC;
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}
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@ -567,7 +565,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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/* Subtract TOC pointer */
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value -= my_r2(sechdrs, me);
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if ((value & 3) != 0 || value + 0x8000 > 0xffff) {
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printk("%s: bad TOC16_DS relocation (%lu)\n",
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pr_err("%s: bad TOC16_DS relocation (0x%lx)\n",
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me->name, value);
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return -ENOEXEC;
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}
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@ -580,7 +578,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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/* Subtract TOC pointer */
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value -= my_r2(sechdrs, me);
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if ((value & 3) != 0) {
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printk("%s: bad TOC16_LO_DS relocation (%lu)\n",
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pr_err("%s: bad TOC16_LO_DS relocation (0x%lx)\n",
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me->name, value);
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return -ENOEXEC;
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}
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@ -613,7 +611,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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/* Convert value to relative */
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value -= (unsigned long)location;
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if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0){
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printk("%s: REL24 %li out of range!\n",
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pr_err("%s: REL24 %li out of range!\n",
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me->name, (long int)value);
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return -ENOEXEC;
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}
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@ -655,7 +653,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
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break;
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default:
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printk("%s: Unknown ADD relocation: %lu\n",
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pr_err("%s: Unknown ADD relocation: %lu\n",
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me->name,
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(unsigned long)ELF64_R_TYPE(rela[i].r_info));
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return -ENOEXEC;
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