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-rw-r--r--arch/arm/kernel/Makefile2
-rw-r--r--arch/arm/kernel/calls.S1
-rw-r--r--arch/arm/kernel/entry-armv.S35
-rw-r--r--arch/arm/kernel/entry-header.S15
-rw-r--r--arch/arm/kernel/etm.c641
-rw-r--r--arch/arm/kernel/head-common.S2
-rw-r--r--arch/arm/kernel/head-nommu.S2
-rw-r--r--arch/arm/kernel/head.S2
-rw-r--r--arch/arm/kernel/isa.c17
-rw-r--r--arch/arm/kernel/process.c9
-rw-r--r--arch/arm/kernel/signal.c45
-rw-r--r--arch/arm/kernel/signal.h4
-rw-r--r--arch/arm/kernel/smp_scu.c4
-rw-r--r--arch/arm/kernel/traps.c84
-rw-r--r--arch/arm/kernel/unwind.c9
-rw-r--r--arch/arm/kernel/vmlinux.lds.S85
16 files changed, 804 insertions, 153 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 79087dd6d86..e7ccf7e697c 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -17,6 +17,8 @@ obj-y := compat.o elf.o entry-armv.o entry-common.o irq.o \
process.o ptrace.o return_address.o setup.o signal.o \
sys_arm.o stacktrace.o time.o traps.o
+obj-$(CONFIG_OC_ETM) += etm.o
+
obj-$(CONFIG_ISA_DMA_API) += dma.o
obj-$(CONFIG_ARCH_ACORN) += ecard.o
obj-$(CONFIG_FIQ) += fiq.o
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index fafce1b5c69..f58c1156e77 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -374,6 +374,7 @@
CALL(sys_pwritev)
CALL(sys_rt_tgsigqueueinfo)
CALL(sys_perf_event_open)
+/* 365 */ CALL(sys_recvmmsg)
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 322410be573..d2903e3bc86 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -21,6 +21,7 @@
#include <mach/entry-macro.S>
#include <asm/thread_notify.h>
#include <asm/unwind.h>
+#include <asm/unistd.h>
#include "entry-header.S"
@@ -608,33 +609,33 @@ call_fpe:
THUMB( add pc, r8 )
nop
- W(mov) pc, lr @ CP#0
+ movw_pc lr @ CP#0
W(b) do_fpe @ CP#1 (FPE)
W(b) do_fpe @ CP#2 (FPE)
- W(mov) pc, lr @ CP#3
+ movw_pc lr @ CP#3
#ifdef CONFIG_CRUNCH
b crunch_task_enable @ CP#4 (MaverickCrunch)
b crunch_task_enable @ CP#5 (MaverickCrunch)
b crunch_task_enable @ CP#6 (MaverickCrunch)
#else
- W(mov) pc, lr @ CP#4
- W(mov) pc, lr @ CP#5
- W(mov) pc, lr @ CP#6
+ movw_pc lr @ CP#4
+ movw_pc lr @ CP#5
+ movw_pc lr @ CP#6
#endif
- W(mov) pc, lr @ CP#7
- W(mov) pc, lr @ CP#8
- W(mov) pc, lr @ CP#9
+ movw_pc lr @ CP#7
+ movw_pc lr @ CP#8
+ movw_pc lr @ CP#9
#ifdef CONFIG_VFP
W(b) do_vfp @ CP#10 (VFP)
W(b) do_vfp @ CP#11 (VFP)
#else
- W(mov) pc, lr @ CP#10 (VFP)
- W(mov) pc, lr @ CP#11 (VFP)
+ movw_pc lr @ CP#10 (VFP)
+ movw_pc lr @ CP#11 (VFP)
#endif
- W(mov) pc, lr @ CP#12
- W(mov) pc, lr @ CP#13
- W(mov) pc, lr @ CP#14 (Debug)
- W(mov) pc, lr @ CP#15 (Control)
+ movw_pc lr @ CP#12
+ movw_pc lr @ CP#13
+ movw_pc lr @ CP#14 (Debug)
+ movw_pc lr @ CP#15 (Control)
#ifdef CONFIG_NEON
.align 6
@@ -908,10 +909,10 @@ __kuser_cmpxchg: @ 0xffff0fc0
* A special ghost syscall is used for that (see traps.c).
*/
stmfd sp!, {r7, lr}
- mov r7, #0xff00 @ 0xfff0 into r7 for EABI
- orr r7, r7, #0xf0
- swi #0x9ffff0
+ ldr r7, =1f @ it's 20 bits
+ swi __ARM_NR_cmpxchg
ldmfd sp!, {r7, pc}
+1: .word __ARM_NR_cmpxchg
#elif __LINUX_ARM_ARCH__ < 6
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index ac34c0d9384..7e9ed1eea40 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -110,6 +110,13 @@
mov \rd, sp, lsr #13
mov \rd, \rd, lsl #13
.endm
+
+ @
+ @ 32-bit wide "mov pc, reg"
+ @
+ .macro movw_pc, reg
+ mov pc, \reg
+ .endm
#else /* CONFIG_THUMB2_KERNEL */
.macro svc_exit, rpsr
clrex @ clear the exclusive monitor
@@ -146,6 +153,14 @@
lsr \rd, \rd, #13
mov \rd, \rd, lsl #13
.endm
+
+ @
+ @ 32-bit wide "mov pc, reg"
+ @
+ .macro movw_pc, reg
+ mov pc, \reg
+ nop
+ .endm
#endif /* !CONFIG_THUMB2_KERNEL */
/*
diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
new file mode 100644
index 00000000000..82775396630
--- /dev/null
+++ b/arch/arm/kernel/etm.c
@@ -0,0 +1,641 @@
+/*
+ * linux/arch/arm/kernel/etm.c
+ *
+ * Driver for ARM's Embedded Trace Macrocell and Embedded Trace Buffer.
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/io.h>
+#include <linux/sysrq.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/amba/bus.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/vmalloc.h>
+#include <linux/mutex.h>
+#include <asm/hardware/coresight.h>
+#include <asm/sections.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexander Shishkin");
+
+static struct tracectx tracer;
+
+static inline bool trace_isrunning(struct tracectx *t)
+{
+ return !!(t->flags & TRACER_RUNNING);
+}
+
+static int etm_setup_address_range(struct tracectx *t, int n,
+ unsigned long start, unsigned long end, int exclude, int data)
+{
+ u32 flags = ETMAAT_ARM | ETMAAT_IGNCONTEXTID | ETMAAT_NSONLY | \
+ ETMAAT_NOVALCMP;
+
+ if (n < 1 || n > t->ncmppairs)
+ return -EINVAL;
+
+ /* comparators and ranges are numbered starting with 1 as opposed
+ * to bits in a word */
+ n--;
+
+ if (data)
+ flags |= ETMAAT_DLOADSTORE;
+ else
+ flags |= ETMAAT_IEXEC;
+
+ /* first comparator for the range */
+ etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2));
+ etm_writel(t, start, ETMR_COMP_VAL(n * 2));
+
+ /* second comparator is right next to it */
+ etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2 + 1));
+ etm_writel(t, end, ETMR_COMP_VAL(n * 2 + 1));
+
+ flags = exclude ? ETMTE_INCLEXCL : 0;
+ etm_writel(t, flags | (1 << n), ETMR_TRACEENCTRL);
+
+ return 0;
+}
+
+static int trace_start(struct tracectx *t)
+{
+ u32 v;
+ unsigned long timeout = TRACER_TIMEOUT;
+
+ etb_unlock(t);
+
+ etb_writel(t, 0, ETBR_FORMATTERCTRL);
+ etb_writel(t, 1, ETBR_CTRL);
+
+ etb_lock(t);
+
+ /* configure etm */
+ v = ETMCTRL_OPTS | ETMCTRL_PROGRAM | ETMCTRL_PORTSIZE(t->etm_portsz);
+
+ if (t->flags & TRACER_CYCLE_ACC)
+ v |= ETMCTRL_CYCLEACCURATE;
+
+ etm_unlock(t);
+
+ etm_writel(t, v, ETMR_CTRL);
+
+ while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
+ ;
+ if (!timeout) {
+ dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
+ etm_lock(t);
+ return -EFAULT;
+ }
+
+ etm_setup_address_range(t, 1, (unsigned long)_stext,
+ (unsigned long)_etext, 0, 0);
+ etm_writel(t, 0, ETMR_TRACEENCTRL2);
+ etm_writel(t, 0, ETMR_TRACESSCTRL);
+ etm_writel(t, 0x6f, ETMR_TRACEENEVT);
+
+ v &= ~ETMCTRL_PROGRAM;
+ v |= ETMCTRL_PORTSEL;
+
+ etm_writel(t, v, ETMR_CTRL);
+
+ timeout = TRACER_TIMEOUT;
+ while (etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM && --timeout)
+ ;
+ if (!timeout) {
+ dev_dbg(t->dev, "Waiting for progbit to deassert timed out\n");
+ etm_lock(t);
+ return -EFAULT;
+ }
+
+ etm_lock(t);
+
+ t->flags |= TRACER_RUNNING;
+
+ return 0;
+}
+
+static int trace_stop(struct tracectx *t)
+{
+ unsigned long timeout = TRACER_TIMEOUT;
+
+ etm_unlock(t);
+
+ etm_writel(t, 0x440, ETMR_CTRL);
+ while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
+ ;
+ if (!timeout) {
+ dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
+ etm_lock(t);
+ return -EFAULT;
+ }
+
+ etm_lock(t);
+
+ etb_unlock(t);
+ etb_writel(t, ETBFF_MANUAL_FLUSH, ETBR_FORMATTERCTRL);
+
+ timeout = TRACER_TIMEOUT;
+ while (etb_readl(t, ETBR_FORMATTERCTRL) &
+ ETBFF_MANUAL_FLUSH && --timeout)
+ ;
+ if (!timeout) {
+ dev_dbg(t->dev, "Waiting for formatter flush to commence "
+ "timed out\n");
+ etb_lock(t);
+ return -EFAULT;
+ }
+
+ etb_writel(t, 0, ETBR_CTRL);
+
+ etb_lock(t);
+
+ t->flags &= ~TRACER_RUNNING;
+
+ return 0;
+}
+
+static int etb_getdatalen(struct tracectx *t)
+{
+ u32 v;
+ int rp, wp;
+
+ v = etb_readl(t, ETBR_STATUS);
+
+ if (v & 1)
+ return t->etb_bufsz;
+
+ rp = etb_readl(t, ETBR_READADDR);
+ wp = etb_readl(t, ETBR_WRITEADDR);
+
+ if (rp > wp) {
+ etb_writel(t, 0, ETBR_READADDR);
+ etb_writel(t, 0, ETBR_WRITEADDR);
+
+ return 0;
+ }
+
+ return wp - rp;
+}
+
+/* sysrq+v will always stop the running trace and leave it at that */
+static void etm_dump(void)
+{
+ struct tracectx *t = &tracer;
+ u32 first = 0;
+ int length;
+
+ if (!t->etb_regs) {
+ printk(KERN_INFO "No tracing hardware found\n");
+ return;
+ }
+
+ if (trace_isrunning(t))
+ trace_stop(t);
+
+ etb_unlock(t);
+
+ length = etb_getdatalen(t);
+
+ if (length == t->etb_bufsz)
+ first = etb_readl(t, ETBR_WRITEADDR);
+
+ etb_writel(t, first, ETBR_READADDR);
+
+ printk(KERN_INFO "Trace buffer contents length: %d\n", length);
+ printk(KERN_INFO "--- ETB buffer begin ---\n");
+ for (; length; length--)
+ printk("%08x", cpu_to_be32(etb_readl(t, ETBR_READMEM)));
+ printk(KERN_INFO "\n--- ETB buffer end ---\n");
+
+ /* deassert the overflow bit */
+ etb_writel(t, 1, ETBR_CTRL);
+ etb_writel(t, 0, ETBR_CTRL);
+
+ etb_writel(t, 0, ETBR_TRIGGERCOUNT);
+ etb_writel(t, 0, ETBR_READADDR);
+ etb_writel(t, 0, ETBR_WRITEADDR);
+
+ etb_lock(t);
+}
+
+static void sysrq_etm_dump(int key, struct tty_struct *tty)
+{
+ dev_dbg(tracer.dev, "Dumping ETB buffer\n");
+ etm_dump();
+}
+
+static struct sysrq_key_op sysrq_etm_op = {
+ .handler = sysrq_etm_dump,
+ .help_msg = "ETM buffer dump",
+ .action_msg = "etm",
+};
+
+static int etb_open(struct inode *inode, struct file *file)
+{
+ if (!tracer.etb_regs)
+ return -ENODEV;
+
+ file->private_data = &tracer;
+
+ return nonseekable_open(inode, file);
+}
+
+static ssize_t etb_read(struct file *file, char __user *data,
+ size_t len, loff_t *ppos)
+{
+ int total, i;
+ long length;
+ struct tracectx *t = file->private_data;
+ u32 first = 0;
+ u32 *buf;
+
+ mutex_lock(&t->mutex);
+
+ if (trace_isrunning(t)) {
+ length = 0;
+ goto out;
+ }
+
+ etb_unlock(t);
+
+ total = etb_getdatalen(t);
+ if (total == t->etb_bufsz)
+ first = etb_readl(t, ETBR_WRITEADDR);
+
+ etb_writel(t, first, ETBR_READADDR);
+
+ length = min(total * 4, (int)len);
+ buf = vmalloc(length);
+
+ dev_dbg(t->dev, "ETB buffer length: %d\n", total);
+ dev_dbg(t->dev, "ETB status reg: %x\n", etb_readl(t, ETBR_STATUS));
+ for (i = 0; i < length / 4; i++)
+ buf[i] = etb_readl(t, ETBR_READMEM);
+
+ /* the only way to deassert overflow bit in ETB status is this */
+ etb_writel(t, 1, ETBR_CTRL);
+ etb_writel(t, 0, ETBR_CTRL);
+
+ etb_writel(t, 0, ETBR_WRITEADDR);
+ etb_writel(t, 0, ETBR_READADDR);
+ etb_writel(t, 0, ETBR_TRIGGERCOUNT);
+
+ etb_lock(t);
+
+ length -= copy_to_user(data, buf, length);
+ vfree(buf);
+
+out:
+ mutex_unlock(&t->mutex);
+
+ return length;
+}
+
+static int etb_release(struct inode *inode, struct file *file)
+{
+ /* there's nothing to do here, actually */
+ return 0;
+}
+
+static const struct file_operations etb_fops = {
+ .owner = THIS_MODULE,
+ .read = etb_read,
+ .open = etb_open,
+ .release = etb_release,
+};
+
+static struct miscdevice etb_miscdev = {
+ .name = "tracebuf",
+ .minor = 0,
+ .fops = &etb_fops,
+};
+
+static int __init etb_probe(struct amba_device *dev, struct amba_id *id)
+{
+ struct tracectx *t = &tracer;
+ int ret = 0;
+
+ ret = amba_request_regions(dev, NULL);
+ if (ret)
+ goto out;
+
+ t->etb_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
+ if (!t->etb_regs) {
+ ret = -ENOMEM;
+ goto out_release;
+ }
+
+ amba_set_drvdata(dev, t);
+
+ etb_miscdev.parent = &dev->dev;
+
+ ret = misc_register(&etb_miscdev);
+ if (ret)
+ goto out_unmap;
+
+ t->emu_clk = clk_get(&dev->dev, "emu_src_ck");
+ if (IS_ERR(t->emu_clk)) {
+ dev_dbg(&dev->dev, "Failed to obtain emu_src_ck.\n");
+ return -EFAULT;
+ }
+
+ clk_enable(t->emu_clk);
+
+ etb_unlock(t);
+ t->etb_bufsz = etb_readl(t, ETBR_DEPTH);
+ dev_dbg(&dev->dev, "Size: %x\n", t->etb_bufsz);
+
+ /* make sure trace capture is disabled */
+ etb_writel(t, 0, ETBR_CTRL);
+ etb_writel(t, 0x1000, ETBR_FORMATTERCTRL);
+ etb_lock(t);
+
+ dev_dbg(&dev->dev, "ETB AMBA driver initialized.\n");
+
+out:
+ return ret;
+
+out_unmap:
+ amba_set_drvdata(dev, NULL);
+ iounmap(t->etb_regs);
+
+out_release:
+ amba_release_regions(dev);
+
+ return ret;
+}
+
+static int etb_remove(struct amba_device *dev)
+{
+ struct tracectx *t = amba_get_drvdata(dev);
+
+ amba_set_drvdata(dev, NULL);
+
+ iounmap(t->etb_regs);
+ t->etb_regs = NULL;
+
+ clk_disable(t->emu_clk);
+ clk_put(t->emu_clk);
+
+ amba_release_regions(dev);
+
+ return 0;
+}
+
+static struct amba_id etb_ids[] = {
+ {
+ .id = 0x0003b907,
+ .mask = 0x0007ffff,
+ },
+ { 0, 0 },
+};
+
+static struct amba_driver etb_driver = {
+ .drv = {
+ .name = "etb",
+ .owner = THIS_MODULE,
+ },
+ .probe = etb_probe,
+ .remove = etb_remove,
+ .id_table = etb_ids,
+};
+
+/* use a sysfs file "trace_running" to start/stop tracing */
+static ssize_t trace_running_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%x\n", trace_isrunning(&tracer));
+}
+
+static ssize_t trace_running_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t n)
+{
+ unsigned int value;
+ int ret;
+
+ if (sscanf(buf, "%u", &value) != 1)
+ return -EINVAL;
+
+ mutex_lock(&tracer.mutex);
+ ret = value ? trace_start(&tracer) : trace_stop(&tracer);
+ mutex_unlock(&tracer.mutex);
+
+ return ret ? : n;
+}
+
+static struct kobj_attribute trace_running_attr =
+ __ATTR(trace_running, 0644, trace_running_show, trace_running_store);
+
+static ssize_t trace_info_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ u32 etb_wa, etb_ra, etb_st, etb_fc, etm_ctrl, etm_st;
+ int datalen;
+
+ etb_unlock(&tracer);
+ datalen = etb_getdatalen(&tracer);
+ etb_wa = etb_readl(&tracer, ETBR_WRITEADDR);
+ etb_ra = etb_readl(&tracer, ETBR_READADDR);
+ etb_st = etb_readl(&tracer, ETBR_STATUS);
+ etb_fc = etb_readl(&tracer, ETBR_FORMATTERCTRL);
+ etb_lock(&tracer);
+
+ etm_unlock(&tracer);
+ etm_ctrl = etm_readl(&tracer, ETMR_CTRL);
+ etm_st = etm_readl(&tracer, ETMR_STATUS);
+ etm_lock(&tracer);
+
+ return sprintf(buf, "Trace buffer len: %d\nComparator pairs: %d\n"
+ "ETBR_WRITEADDR:\t%08x\n"
+ "ETBR_READADDR:\t%08x\n"
+ "ETBR_STATUS:\t%08x\n"
+ "ETBR_FORMATTERCTRL:\t%08x\n"
+ "ETMR_CTRL:\t%08x\n"
+ "ETMR_STATUS:\t%08x\n",
+ datalen,
+ tracer.ncmppairs,
+ etb_wa,
+ etb_ra,
+ etb_st,
+ etb_fc,
+ etm_ctrl,
+ etm_st
+ );
+}
+
+static struct kobj_attribute trace_info_attr =
+ __ATTR(trace_info, 0444, trace_info_show, NULL);
+
+static ssize_t trace_mode_show(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d %d\n",
+ !!(tracer.flags & TRACER_CYCLE_ACC),
+ tracer.etm_portsz);
+}
+
+static ssize_t trace_mode_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t n)
+{
+ unsigned int cycacc, portsz;
+
+ if (sscanf(buf, "%u %u", &cycacc, &portsz) != 2)
+ return -EINVAL;
+
+ mutex_lock(&tracer.mutex);
+ if (cycacc)
+ tracer.flags |= TRACER_CYCLE_ACC;
+ else
+ tracer.flags &= ~TRACER_CYCLE_ACC;
+
+ tracer.etm_portsz = portsz & 0x0f;
+ mutex_unlock(&tracer.mutex);
+
+ return n;
+}
+
+static struct kobj_attribute trace_mode_attr =
+ __ATTR(trace_mode, 0644, trace_mode_show, trace_mode_store);
+
+static int __init etm_probe(struct amba_device *dev, struct amba_id *id)
+{
+ struct tracectx *t = &tracer;
+ int ret = 0;
+
+ if (t->etm_regs) {
+ dev_dbg(&dev->dev, "ETM already initialized\n");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = amba_request_regions(dev, NULL);
+ if (ret)
+ goto out;
+
+ t->etm_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
+ if (!t->etm_regs) {
+ ret = -ENOMEM;
+ goto out_release;
+ }
+
+ amba_set_drvdata(dev, t);
+
+ mutex_init(&t->mutex);
+ t->dev = &dev->dev;
+ t->flags = TRACER_CYCLE_ACC;
+ t->etm_portsz = 1;
+
+ etm_unlock(t);
+ ret = etm_readl(t, CSCR_PRSR);
+
+ t->ncmppairs = etm_readl(t, ETMR_CONFCODE) & 0xf;
+ etm_writel(t, 0x440, ETMR_CTRL);
+ etm_lock(t);
+
+ ret = sysfs_create_file(&dev->dev.kobj,
+ &trace_running_attr.attr);
+ if (ret)
+ goto out_unmap;
+
+ /* failing to create any of these two is not fatal */
+ ret = sysfs_create_file(&dev->dev.kobj, &trace_info_attr.attr);
+ if (ret)
+ dev_dbg(&dev->dev, "Failed to create trace_info in sysfs\n");
+
+ ret = sysfs_create_file(&dev->dev.kobj, &trace_mode_attr.attr);
+ if (ret)
+ dev_dbg(&dev->dev, "Failed to create trace_mode in sysfs\n");
+
+ dev_dbg(t->dev, "ETM AMBA driver initialized.\n");
+
+out:
+ return ret;
+
+out_unmap:
+ amba_set_drvdata(dev, NULL);
+ iounmap(t->etm_regs);
+
+out_release:
+ amba_release_regions(dev);
+
+ return ret;
+}
+
+static int etm_remove(struct amba_device *dev)
+{
+ struct tracectx *t = amba_get_drvdata(dev);
+
+ amba_set_drvdata(dev, NULL);
+
+ iounmap(t->etm_regs);
+ t->etm_regs = NULL;
+
+ amba_release_regions(dev);
+
+ sysfs_remove_file(&dev->dev.kobj, &trace_running_attr.attr);
+ sysfs_remove_file(&dev->dev.kobj, &trace_info_attr.attr);
+ sysfs_remove_file(&dev->dev.kobj, &trace_mode_attr.attr);
+
+ return 0;
+}
+
+static struct amba_id etm_ids[] = {
+ {
+ .id = 0x0003b921,
+ .mask = 0x0007ffff,
+ },
+ { 0, 0 },
+};
+
+static struct amba_driver etm_driver = {
+ .drv = {
+ .name = "etm",
+ .owner = THIS_MODULE,
+ },
+ .probe = etm_probe,
+ .remove = etm_remove,
+ .id_table = etm_ids,
+};
+
+static int __init etm_init(void)
+{
+ int retval;
+
+ retval = amba_driver_register(&etb_driver);
+ if (retval) {
+ printk(KERN_ERR "Failed to register etb\n");
+ return retval;
+ }
+
+ retval = amba_driver_register(&etm_driver);
+ if (retval) {
+ amba_driver_unregister(&etb_driver);
+ printk(KERN_ERR "Failed to probe etm\n");
+ return retval;
+ }
+
+ /* not being able to install this handler is not fatal */
+ (void)register_sysrq_key('v', &sysrq_etm_op);
+
+ return 0;
+}
+
+device_initcall(etm_init);
+
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 885a7214418..b9505aa267c 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -97,7 +97,7 @@ __error_a:
bl printhex8
adr r0, str_a2
bl printascii
- adr r3, 3f
+ adr r3, 4f
ldmia r3, {r4, r5, r6} @ get machine desc list
sub r4, r3, r4 @ get offset between virt&phys
add r5, r5, r4 @ convert virt addresses to
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index e5dfc2895e2..573b803dc6b 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -32,7 +32,7 @@
* numbers for r1.
*
*/
- .section ".text.head", "ax"
+ __HEAD
ENTRY(stext)
setmode PSR_F_BIT | PSR_I_BIT | SVC_MODE, r9 @ ensure svc mode
@ and irqs disabled
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 38ccbe1d3b2..eb62bf94721 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -74,7 +74,7 @@
* crap here - that's what the boot loader (or in extreme, well justified
* circumstances, zImage) is for.
*/
- .section ".text.head", "ax"
+ __HEAD
ENTRY(stext)
setmode PSR_F_BIT | PSR_I_BIT | SVC_MODE, r9 @ ensure svc mode
@ and irqs disabled
diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c
index 8ac9b842400..34648591073 100644
--- a/arch/arm/kernel/isa.c
+++ b/arch/arm/kernel/isa.c
@@ -22,47 +22,42 @@ static unsigned int isa_membase, isa_portbase, isa_portshift;
static ctl_table ctl_isa_vars[4] = {
{
- .ctl_name = BUS_ISA_MEM_BASE,
.procname = "membase",
.data = &isa_membase,
.maxlen = sizeof(isa_membase),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
}, {
- .ctl_name = BUS_ISA_PORT_BASE,
.procname = "portbase",
.data = &isa_portbase,
.maxlen = sizeof(isa_portbase),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
}, {
- .ctl_name = BUS_ISA_PORT_SHIFT,
.procname = "portshift",
.data = &isa_portshift,
.maxlen = sizeof(isa_portshift),
.mode = 0444,
- .proc_handler = &proc_dointvec,
- }, {0}
+ .proc_handler = proc_dointvec,
+ }, {}
};
static struct ctl_table_header *isa_sysctl_header;
static ctl_table ctl_isa[2] = {
{
- .ctl_name = CTL_BUS_ISA,
.procname = "isa",
.mode = 0555,
.child = ctl_isa_vars,
- }, {0}
+ }, {}
};
static ctl_table ctl_bus[2] = {
{
- .ctl_name = CTL_BUS,
.procname = "bus",
.mode = 0555,
.child = ctl_isa,
- }, {0}
+ }, {}
};
void __init
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 790fbee92ec..0d96d0171c0 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -328,6 +328,15 @@ copy_thread(unsigned long clone_flags, unsigned long stack_start,
}
/*
+ * Fill in the task's elfregs structure for a core dump.
+ */
+int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs)
+{
+ elf_core_copy_regs(elfregs, task_pt_regs(t));
+ return 1;
+}
+
+/*
* fill in the fpe structure for a core dump...
*/
int dump_fpu (struct pt_regs *regs, struct user_fp *fp)
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 1423a341978..e7714f367eb 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -1,7 +1,7 @@
/*
* linux/arch/arm/kernel/signal.c
*
- * Copyright (C) 1995-2002 Russell King
+ * Copyright (C) 1995-2009 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -29,6 +29,7 @@
*/
#define SWI_SYS_SIGRETURN (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))
#define SWI_SYS_RT_SIGRETURN (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))
+#define SWI_SYS_RESTART (0xef000000|__NR_restart_syscall|__NR_OABI_SYSCALL_BASE)
/*
* With EABI, the syscall number has to be loaded into r7.
@@ -49,6 +50,18 @@ const unsigned long sigreturn_codes[7] = {
};
/*
+ * Either we support OABI only, or we have EABI with the OABI
+ * compat layer enabled. In the later case we don't know if
+ * user space is EABI or not, and if not we must not clobber r7.
+ * Always using the OABI syscall solves that issue and works for
+ * all those cases.
+ */
+const unsigned long syscall_restart_code[2] = {
+ SWI_SYS_RESTART, /* swi __NR_restart_syscall */
+ 0xe49df004, /* ldr pc, [sp], #4 */
+};
+
+/*
* atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
@@ -645,32 +658,16 @@ static void do_signal(struct pt_regs *regs, int syscall)
regs->ARM_pc -= 4;
#else
u32 __user *usp;
- u32 swival = __NR_restart_syscall;
- regs->ARM_sp -= 12;
+ regs->ARM_sp -= 4;
usp = (u32 __user *)regs->ARM_sp;
- /*
- * Either we supports OABI only, or we have
- * EABI with the OABI compat layer enabled.
- * In the later case we don't know if user
- * space is EABI or not, and if not we must
- * not clobber r7. Always using the OABI
- * syscall solves that issue and works for
- * all those cases.
- */
- swival = swival - __NR_SYSCALL_BASE + __NR_OABI_SYSCALL_BASE;
-
- put_user(regs->ARM_pc, &usp[0]);
- /* swi __NR_restart_syscall */
- put_user(0xef000000 | swival, &usp[1]);
- /* ldr pc, [sp], #12 */
- put_user(0xe49df00c, &usp[2]);
-
- flush_icache_range((unsigned long)usp,
- (unsigned long)(usp + 3));
-
- regs->ARM_pc = regs->ARM_sp + 4;
+ if (put_user(regs->ARM_pc, usp) == 0) {
+ regs->ARM_pc = KERN_RESTART_CODE;
+ } else {
+ regs->ARM_sp += 4;
+ force_sigsegv(0, current);
+ }
#endif
}
}
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 27beece1550..6fcfe8398aa 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -1,12 +1,14 @@
/*
* linux/arch/arm/kernel/signal.h
*
- * Copyright (C) 2005 Russell King.
+ * Copyright (C) 2005-2009 Russell King.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define KERN_SIGRETURN_CODE (CONFIG_VECTORS_BASE + 0x00000500)
+#define KERN_RESTART_CODE (KERN_SIGRETURN_CODE + sizeof(sigreturn_codes))
extern const unsigned long sigreturn_codes[7];
+extern const unsigned long syscall_restart_code[2];
diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c
index d3831f616ee..9ab4149bd98 100644
--- a/arch/arm/kernel/smp_scu.c
+++ b/arch/arm/kernel/smp_scu.c
@@ -37,6 +37,10 @@ void __init scu_enable(void __iomem *scu_base)
u32 scu_ctrl;
scu_ctrl = __raw_readl(scu_base + SCU_CTRL);
+ /* already enabled? */
+ if (scu_ctrl & 1)
+ return;
+
scu_ctrl |= 1;
__raw_writel(scu_ctrl, scu_base + SCU_CTRL);
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 467b69ed102..3f361a783f4 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -1,7 +1,7 @@
/*
* linux/arch/arm/kernel/traps.c
*
- * Copyright (C) 1995-2002 Russell King
+ * Copyright (C) 1995-2009 Russell King
* Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds
*
* This program is free software; you can redistribute it and/or modify
@@ -45,21 +45,21 @@ static int __init user_debug_setup(char *str)
__setup("user_debug=", user_debug_setup);
#endif
-static void dump_mem(const char *str, unsigned long bottom, unsigned long top);
+static void dump_mem(const char *, const char *, unsigned long, unsigned long);
void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
{
#ifdef CONFIG_KALLSYMS
- printk("[<%08lx>] ", where);
- print_symbol("(%s) ", where);
- printk("from [<%08lx>] ", from);
- print_symbol("(%s)\n", from);
+ char sym1[KSYM_SYMBOL_LEN], sym2[KSYM_SYMBOL_LEN];
+ sprint_symbol(sym1, where);
+ sprint_symbol(sym2, from);
+ printk("[<%08lx>] (%s) from [<%08lx>] (%s)\n", where, sym1, from, sym2);
#else
printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
#endif
if (in_exception_text(where))
- dump_mem("Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
+ dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
}
#ifndef CONFIG_ARM_UNWIND
@@ -81,9 +81,10 @@ static int verify_stack(unsigned long sp)
/*
* Dump out the contents of some memory nicely...
*/
-static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
+static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
+ unsigned long top)
{
- unsigned long p = bottom & ~31;
+ unsigned long first;
mm_segment_t fs;
int i;
@@ -95,33 +96,37 @@ static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
fs = get_fs();
set_fs(KERNEL_DS);
- printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
+ printk("%s%s(0x%08lx to 0x%08lx)\n", lvl, str, bottom, top);
- for (p = bottom & ~31; p < top;) {
- printk("%04lx: ", p & 0xffff);
+ for (first = bottom & ~31; first < top; first += 32) {
+ unsigned long p;
+ char str[sizeof(" 12345678") * 8 + 1];
- for (i = 0; i < 8; i++, p += 4) {
- unsigned int val;
+ memset(str, ' ', sizeof(str));
+ str[sizeof(str) - 1] = '\0';
- if (p < bottom || p >= top)
- printk(" ");
- else {
- __get_user(val, (unsigned long *)p);
- printk("%08x ", val);
+ for (p = first, i = 0; i < 8 && p < top; i++, p += 4) {
+ if (p >= bottom && p < top) {
+ unsigned long val;
+ if (__get_user(val, (unsigned long *)p) == 0)
+ sprintf(str + i * 9, " %08lx", val);
+ else
+ sprintf(str + i * 9, " ????????");
}
}
- printk ("\n");
+ printk("%s%04lx:%s\n", lvl, first & 0xffff, str);
}
set_fs(fs);
}
-static void dump_instr(struct pt_regs *regs)
+static void dump_instr(const char *lvl, struct pt_regs *regs)
{
unsigned long addr = instruction_pointer(regs);
const int thumb = thumb_mode(regs);
const int width = thumb ? 4 : 8;
mm_segment_t fs;
+ char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
int i;
/*
@@ -132,7 +137,6 @@ static void dump_instr(struct pt_regs *regs)
fs = get_fs();
set_fs(KERNEL_DS);
- printk("Code: ");
for (i = -4; i < 1; i++) {
unsigned int val, bad;
@@ -142,13 +146,14 @@ static void dump_instr(struct pt_regs *regs)
bad = __get_user(val, &((u32 *)addr)[i]);
if (!bad)
- printk(i == 0 ? "(%0*x) " : "%0*x ", width, val);
+ p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
+ width, val);
else {
- printk("bad PC value.");
+ p += sprintf(p, "bad PC value");
break;
}
}
- printk("\n");
+ printk("%sCode: %s\n", lvl, str);
set_fs(fs);
}
@@ -224,18 +229,19 @@ static void __die(const char *str, int err, struct thread_info *thread, struct p
struct task_struct *tsk = thread->task;
static int die_counter;
- printk("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
+ printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
str, err, ++die_counter);
+ sysfs_printk_last_file();
print_modules();
__show_regs(regs);
- printk("Process %s (pid: %d, stack limit = 0x%p)\n",
- tsk->comm, task_pid_nr(tsk), thread + 1);
+ printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
+ TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), thread + 1);
if (!user_mode(regs) || in_interrupt()) {
- dump_mem("Stack: ", regs->ARM_sp,
+ dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,
THREAD_SIZE + (unsigned long)task_stack_page(tsk));
dump_backtrace(regs, tsk);
- dump_instr(regs);
+ dump_instr(KERN_EMERG, regs);
}
}
@@ -250,13 +256,14 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
oops_enter();
- console_verbose();
spin_lock_irq(&die_lock);
+ console_verbose();
bust_spinlocks(1);
__die(str, err, thread, regs);
bust_spinlocks(0);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
+ oops_exit();
if (in_interrupt())
panic("Fatal exception in interrupt");
@@ -264,7 +271,6 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
if (panic_on_oops)
panic("Fatal exception");
- oops_exit();
do_exit(SIGSEGV);
}
@@ -349,7 +355,7 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
if (user_debug & UDBG_UNDEFINED) {
printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",
current->comm, task_pid_nr(current), pc);
- dump_instr(regs);
+ dump_instr(KERN_INFO, regs);
}
#endif
@@ -400,7 +406,7 @@ static int bad_syscall(int n, struct pt_regs *regs)
if (user_debug & UDBG_SYSCALL) {
printk(KERN_ERR "[%d] %s: obsolete system call %08x.\n",
task_pid_nr(current), current->comm, n);
- dump_instr(regs);
+ dump_instr(KERN_ERR, regs);
}
#endif
@@ -522,7 +528,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
* __kuser_cmpxchg code in entry-armv.S should be aware of its
* existence. Don't ever use this from user code.
*/
- case 0xfff0:
+ case NR(cmpxchg):
for (;;) {
extern void do_DataAbort(unsigned long addr, unsigned int fsr,
struct pt_regs *regs);
@@ -567,7 +573,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
if not implemented, rather than raising SIGILL. This
way the calling program can gracefully determine whether
a feature is supported. */
- if (no <= 0x7ff)
+ if ((no & 0xffff) <= 0x7ff)
return -ENOSYS;
break;
}
@@ -579,7 +585,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
if (user_debug & UDBG_SYSCALL) {
printk("[%d] %s: arm syscall %d\n",
task_pid_nr(current), current->comm, no);
- dump_instr(regs);
+ dump_instr("", regs);
if (user_mode(regs)) {
__show_regs(regs);
c_backtrace(regs->ARM_fp, processor_mode(regs));
@@ -656,7 +662,7 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs)
if (user_debug & UDBG_BADABORT) {
printk(KERN_ERR "[%d] %s: bad data abort: code %d instr 0x%08lx\n",
task_pid_nr(current), current->comm, code, instr);
- dump_instr(regs);
+ dump_instr(KERN_ERR, regs);
show_pte(current->mm, addr);
}
#endif
@@ -745,6 +751,8 @@ void __init early_trap_init(void)
*/
memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
sizeof(sigreturn_codes));
+ memcpy((void *)KERN_RESTART_CODE, syscall_restart_code,
+ sizeof(syscall_restart_code));
flush_icache_range(vectors, vectors + PAGE_SIZE);
modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 39baf1128bf..786ac2b6914 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -26,6 +26,15 @@
* http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html
*/
+#if !defined (__ARM_EABI__)
+#warning Your compiler does not have EABI support.
+#warning ARM unwind is known to compile only with EABI compilers.
+#warning Change compiler or disable ARM_UNWIND option.
+#elif (__GNUC__ == 4 && __GNUC_MINOR__ <= 2)
+#warning Your compiler is too buggy; it is known to not compile ARM unwind support.
+#warning Change compiler or disable ARM_UNWIND option.
+#endif
+
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index aecf87dfbae..71151bd87a3 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -24,13 +24,11 @@ SECTIONS
#else
. = PAGE_OFFSET + TEXT_OFFSET;
#endif
- .text.head : {
- _stext = .;
- _sinittext = .;
- *(.text.head)
- }
.init : { /* Init code and data */
+ _stext = .;
+ _sinittext = .;
+ HEAD_TEXT
INIT_TEXT
_einittext = .;
__proc_info_begin = .;
@@ -42,43 +40,31 @@ SECTIONS
__tagtable_begin = .;
*(.taglist.init)
__tagtable_end = .;
- . = ALIGN(16);
- __setup_start = .;
- *(.init.setup)
- __setup_end = .;
+
+ INIT_SETUP(16)
+
__early_begin = .;
*(.early_param.init)
__early_end = .;
- __initcall_start = .;
- INITCALLS
- __initcall_end = .;
- __con_initcall_start = .;
- *(.con_initcall.init)
- __con_initcall_end = .;
- __security_initcall_start = .;
- *(.security_initcall.init)
- __security_initcall_end = .;
-#ifdef CONFIG_BLK_DEV_INITRD
- . = ALIGN(32);
- __initramfs_start = .;
- usr/built-in.o(.init.ramfs)
- __initramfs_end = .;
-#endif
- . = ALIGN(PAGE_SIZE);
- __per_cpu_load = .;
- __per_cpu_start = .;
- *(.data.percpu.page_aligned)
- *(.data.percpu)
- *(.data.percpu.shared_aligned)
- __per_cpu_end = .;
+
+ INIT_CALLS
+ CON_INITCALL
+ SECURITY_INITCALL
+ INIT_RAM_FS
+
#ifndef CONFIG_XIP_KERNEL
__init_begin = _stext;
INIT_DATA
- . = ALIGN(PAGE_SIZE);
- __init_end = .;
#endif
}
+ PERCPU(PAGE_SIZE)
+
+#ifndef CONFIG_XIP_KERNEL
+ . = ALIGN(PAGE_SIZE);
+ __init_end = .;
+#endif
+
/DISCARD/ : { /* Exit code and data */
EXIT_TEXT
EXIT_DATA
@@ -157,7 +143,7 @@ SECTIONS
* first, the init task union, aligned
* to an 8192 byte boundary.
*/
- *(.data.init_task)
+ INIT_TASK_DATA(THREAD_SIZE)
#ifdef CONFIG_XIP_KERNEL
. = ALIGN(PAGE_SIZE);
@@ -167,17 +153,8 @@ SECTIONS
__init_end = .;
#endif
- . = ALIGN(PAGE_SIZE);
- __nosave_begin = .;
- *(.data.nosave)
- . = ALIGN(PAGE_SIZE);
- __nosave_end = .;
-
- /*
- * then the cacheline aligned data
- */
- . = ALIGN(32);
- *(.data.cacheline_aligned)
+ NOSAVE_DATA
+ CACHELINE_ALIGNED_DATA(32)
/*
* The exception fixup table (might need resorting at runtime)
@@ -256,20 +233,10 @@ SECTIONS
}
#endif
- .bss : {
- __bss_start = .; /* BSS */
- *(.bss)
- *(COMMON)
- __bss_stop = .;
- _end = .;
- }
- /* Stabs debugging sections. */
- .stab 0 : { *(.stab) }
- .stabstr 0 : { *(.stabstr) }
- .stab.excl 0 : { *(.stab.excl) }
- .stab.exclstr 0 : { *(.stab.exclstr) }
- .stab.index 0 : { *(.stab.index) }
- .stab.indexstr 0 : { *(.stab.indexstr) }
+ BSS_SECTION(0, 0, 0)
+ _end = .;
+
+ STABS_DEBUG
.comment 0 : { *(.comment) }
}