Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (422 commits)
  [ARM] 5435/1: fix compile warning in sanity_check_meminfo()
  [ARM] 5434/1: ARM: OMAP: Fix mailbox compile for 24xx
  [ARM] pxa: fix the bad assumption that PCMCIA sockets always start with 0
  [ARM] pxa: fix Colibri PXA300 and PXA320 LCD backlight pins
  imxfb: Fix TFT mode
  i.MX21/27: remove ifdef CONFIG_FB_IMX
  imxfb: add clock support
  mxc: add arch_reset() function
  clkdev: add possibility to get a clock based on the device name
  i.MX1: remove fb support from mach-imx
  [ARM] pxa: build arch/arm/plat-pxa/mfp.c only when PXA3xx or ARCH_MMP defined
  Gemini: Add support for Teltonika RUT100
  Gemini: gpiolib based GPIO support v2
  MAINTAINERS: add myself as Gemini architecture maintainer
  ARM: Add Gemini architecture v3
  [ARM] OMAP: Fix compile for omap2_init_common_hw()
  MAINTAINERS: Add myself as Faraday ARM core variant maintainer
  ARM: Add support for FA526 v2
  [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h
  [ARM] collie: fix two minor formatting nits
  ...

1 files changed, 73 insertions, 0 deletions

diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index dab48f27263f..d1731e39b496 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -22,6 +22,7 @@
 
 #include <asm/pgtable.h>
 #include <asm/sections.h>
+#include <asm/unwind.h>
 
 #ifdef CONFIG_XIP_KERNEL
 /*
@@ -66,6 +67,24 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
 			      char *secstrings,
 			      struct module *mod)
 {
+#ifdef CONFIG_ARM_UNWIND
+	Elf_Shdr *s, *sechdrs_end = sechdrs + hdr->e_shnum;
+
+	for (s = sechdrs; s < sechdrs_end; s++) {
+		if (strcmp(".ARM.exidx.init.text", secstrings + s->sh_name) == 0)
+			mod->arch.unw_sec_init = s;
+		else if (strcmp(".ARM.exidx.devinit.text", secstrings + s->sh_name) == 0)
+			mod->arch.unw_sec_devinit = s;
+		else if (strcmp(".ARM.exidx", secstrings + s->sh_name) == 0)
+			mod->arch.unw_sec_core = s;
+		else if (strcmp(".init.text", secstrings + s->sh_name) == 0)
+			mod->arch.sec_init_text = s;
+		else if (strcmp(".devinit.text", secstrings + s->sh_name) == 0)
+			mod->arch.sec_devinit_text = s;
+		else if (strcmp(".text", secstrings + s->sh_name) == 0)
+			mod->arch.sec_core_text = s;
+	}
+#endif
 	return 0;
 }
 
@@ -104,6 +123,10 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 		loc = dstsec->sh_addr + rel->r_offset;
 
 		switch (ELF32_R_TYPE(rel->r_info)) {
+		case R_ARM_NONE:
+			/* ignore */
+			break;
+
 		case R_ARM_ABS32:
 			*(u32 *)loc += sym->st_value;
 			break;
@@ -132,6 +155,20 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 			*(u32 *)loc |= offset & 0x00ffffff;
 			break;
 
+	       case R_ARM_V4BX:
+		       /* Preserve Rm and the condition code. Alter
+			* other bits to re-code instruction as
+			* MOV PC,Rm.
+			*/
+		       *(u32 *)loc &= 0xf000000f;
+		       *(u32 *)loc |= 0x01a0f000;
+		       break;
+
+		case R_ARM_PREL31:
+			offset = *(u32 *)loc + sym->st_value - loc;
+			*(u32 *)loc = offset & 0x7fffffff;
+			break;
+
 		default:
 			printk(KERN_ERR "%s: unknown relocation: %u\n",
 			       module->name, ELF32_R_TYPE(rel->r_info));
@@ -150,14 +187,50 @@ apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
 	return -ENOEXEC;
 }
 
+#ifdef CONFIG_ARM_UNWIND
+static void register_unwind_tables(struct module *mod)
+{
+	if (mod->arch.unw_sec_init && mod->arch.sec_init_text)
+		mod->arch.unwind_init =
+			unwind_table_add(mod->arch.unw_sec_init->sh_addr,
+					 mod->arch.unw_sec_init->sh_size,
+					 mod->arch.sec_init_text->sh_addr,
+					 mod->arch.sec_init_text->sh_size);
+	if (mod->arch.unw_sec_devinit && mod->arch.sec_devinit_text)
+		mod->arch.unwind_devinit =
+			unwind_table_add(mod->arch.unw_sec_devinit->sh_addr,
+					 mod->arch.unw_sec_devinit->sh_size,
+					 mod->arch.sec_devinit_text->sh_addr,
+					 mod->arch.sec_devinit_text->sh_size);
+	if (mod->arch.unw_sec_core && mod->arch.sec_core_text)
+		mod->arch.unwind_core =
+			unwind_table_add(mod->arch.unw_sec_core->sh_addr,
+					 mod->arch.unw_sec_core->sh_size,
+					 mod->arch.sec_core_text->sh_addr,
+					 mod->arch.sec_core_text->sh_size);
+}
+
+static void unregister_unwind_tables(struct module *mod)
+{
+	unwind_table_del(mod->arch.unwind_init);
+	unwind_table_del(mod->arch.unwind_devinit);
+	unwind_table_del(mod->arch.unwind_core);
+}
+#else
+static inline void register_unwind_tables(struct module *mod) { }
+static inline void unregister_unwind_tables(struct module *mod) { }
+#endif
+
 int
 module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
 		struct module *module)
 {
+	register_unwind_tables(module);
 	return 0;
 }
 
 void
 module_arch_cleanup(struct module *mod)
 {
+	unregister_unwind_tables(mod);
 }