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Diffstat (limited to 'i386')
-rw-r--r--i386/i386/db_trace.c4
-rw-r--r--i386/i386/fpu.c2
-rw-r--r--i386/i386/locore.S14
-rw-r--r--i386/i386/machine_task.c2
-rw-r--r--i386/i386/pcb.c2
-rw-r--r--i386/i386at/model_dep.c17
-rw-r--r--i386/i386at/model_dep.h9
-rw-r--r--i386/intel/pmap.c4
8 files changed, 31 insertions, 23 deletions
diff --git a/i386/i386/db_trace.c b/i386/i386/db_trace.c
index ec338591..c8789e71 100644
--- a/i386/i386/db_trace.c
+++ b/i386/i386/db_trace.c
@@ -37,6 +37,7 @@
#include <machine/machspl.h>
#include <machine/db_interface.h>
#include <machine/db_trace.h>
+#include <i386at/model_dep.h>
#include <ddb/db_access.h>
#include <ddb/db_command.h>
@@ -129,7 +130,6 @@ db_i386_reg_value(
long *dp = 0;
db_expr_t null_reg = 0;
thread_t thread = ap->thread;
- extern unsigned int_stack_high;
if (db_option(ap->modif, 'u')) {
if (thread == THREAD_NULL) {
@@ -139,7 +139,7 @@ db_i386_reg_value(
if (thread == current_thread()) {
if (ddb_regs.cs & 0x3)
dp = vp->valuep;
- else if (ddb_regs.ebp < int_stack_high)
+ else if (ON_INT_STACK(ddb_regs.ebp))
db_error("cannot get/set user registers in nested interrupt\n");
}
} else {
diff --git a/i386/i386/fpu.c b/i386/i386/fpu.c
index 0f34833e..ddf4c8ed 100644
--- a/i386/i386/fpu.c
+++ b/i386/i386/fpu.c
@@ -189,7 +189,7 @@ fpu_module_init(void)
{
kmem_cache_init(&ifps_cache, "i386_fpsave_state",
sizeof(struct i386_fpsave_state), 16,
- NULL, NULL, NULL, 0);
+ NULL, 0);
}
/*
diff --git a/i386/i386/locore.S b/i386/i386/locore.S
index 8cefbccb..c715d959 100644
--- a/i386/i386/locore.S
+++ b/i386/i386/locore.S
@@ -542,8 +542,10 @@ trap_from_kernel:
#if MACH_KDB || MACH_TTD
movl %esp,%ebx /* save current stack */
- cmpl EXT(int_stack_high),%esp /* on an interrupt stack? */
- jb 1f /* OK if so */
+ movl %esp,%edx /* on an interrupt stack? */
+ and $(~(KERNEL_STACK_SIZE-1)),%edx
+ cmpl EXT(int_stack_base),%edx
+ je 1f /* OK if so */
CPU_NUMBER(%edx) /* get CPU number */
cmpl CX(EXT(kernel_stack),%edx),%esp
@@ -647,8 +649,10 @@ ENTRY(all_intrs)
pushl %edx
cld /* clear direction flag */
- cmpl %ss:EXT(int_stack_high),%esp /* on an interrupt stack? */
- jb int_from_intstack /* if not: */
+ movl %esp,%edx /* on an interrupt stack? */
+ and $(~(KERNEL_STACK_SIZE-1)),%edx
+ cmpl %ss:EXT(int_stack_base),%edx
+ je int_from_intstack /* if not: */
pushl %ds /* save segment registers */
pushl %es
@@ -707,7 +711,7 @@ LEXT(return_to_iret) /* ( label for kdb_kintr and hardclock) */
iret /* return to caller */
int_from_intstack:
- cmpl $EXT(_intstack),%esp /* seemingly looping? */
+ cmpl EXT(int_stack_base),%esp /* seemingly looping? */
jb stack_overflowed /* if not: */
call EXT(interrupt) /* call interrupt routine */
_return_to_iret_i: /* ( label for kdb_kintr) */
diff --git a/i386/i386/machine_task.c b/i386/i386/machine_task.c
index 490b1022..d592838a 100644
--- a/i386/i386/machine_task.c
+++ b/i386/i386/machine_task.c
@@ -38,7 +38,7 @@ void
machine_task_module_init (void)
{
kmem_cache_init (&machine_task_iopb_cache, "i386_task_iopb", IOPB_BYTES, 0,
- NULL, NULL, NULL, 0);
+ NULL, 0);
}
diff --git a/i386/i386/pcb.c b/i386/i386/pcb.c
index 3a0eba0f..6b22e4c4 100644
--- a/i386/i386/pcb.c
+++ b/i386/i386/pcb.c
@@ -371,7 +371,7 @@ thread_t switch_context(
void pcb_module_init(void)
{
kmem_cache_init(&pcb_cache, "pcb", sizeof(struct pcb), 0,
- NULL, NULL, NULL, 0);
+ NULL, 0);
fpu_module_init();
}
diff --git a/i386/i386at/model_dep.c b/i386/i386at/model_dep.c
index 7638b832..62763ae1 100644
--- a/i386/i386at/model_dep.c
+++ b/i386/i386at/model_dep.c
@@ -47,6 +47,7 @@
#include <kern/cpu_number.h>
#include <kern/debug.h>
#include <kern/mach_clock.h>
+#include <kern/macros.h>
#include <kern/printf.h>
#include <kern/startup.h>
#include <sys/time.h>
@@ -133,8 +134,9 @@ extern char version[];
/* If set, reboot the system on ctrl-alt-delete. */
boolean_t rebootflag = FALSE; /* exported to kdintr */
-/* XX interrupt stack pointer and highwater mark, for locore.S. */
-vm_offset_t int_stack_top, int_stack_high;
+/* Interrupt stack. */
+static char int_stack[KERNEL_STACK_SIZE] __aligned(KERNEL_STACK_SIZE);
+vm_offset_t int_stack_top, int_stack_base;
#ifdef LINUX_DEV
extern void linux_init(void);
@@ -398,11 +400,6 @@ i386at_init(void)
pmap_clear_bootstrap_pagetable((void *)boot_info.pt_base);
#endif /* MACH_PV_PAGETABLES */
- /* Interrupt stacks are allocated in physical memory,
- while kernel stacks are allocated in kernel virtual memory,
- so phys_last_addr serves as a convenient dividing point. */
- int_stack_high = phystokv(phys_last_addr);
-
/*
* Initialize and activate the real i386 protected-mode structures.
*/
@@ -448,10 +445,8 @@ i386at_init(void)
hyp_p2m_init();
#endif /* MACH_XEN */
- /* XXX We'll just use the initialization stack we're already running on
- as the interrupt stack for now. Later this will have to change,
- because the init stack will get freed after bootup. */
- asm("movl %%esp,%0" : "=m" (int_stack_top));
+ int_stack_base = (vm_offset_t)&int_stack;
+ int_stack_top = int_stack_base + KERNEL_STACK_SIZE - 4;
}
/*
diff --git a/i386/i386at/model_dep.h b/i386/i386at/model_dep.h
index aa240320..47551b85 100644
--- a/i386/i386at/model_dep.h
+++ b/i386/i386at/model_dep.h
@@ -19,8 +19,17 @@
#ifndef _MODEL_DEP_H_
#define _MODEL_DEP_H_
+#include <i386/vm_param.h>
#include <mach/vm_prot.h>
+/*
+ * Interrupt stack.
+ */
+extern vm_offset_t int_stack_top, int_stack_base;
+
+/* Check whether P points to the interrupt stack. */
+#define ON_INT_STACK(P) (((P) & ~(KERNEL_STACK_SIZE-1)) == int_stack_base)
+
extern int timemmap(dev_t dev, vm_offset_t off, vm_prot_t prot);
void inittodr(void);
diff --git a/i386/intel/pmap.c b/i386/intel/pmap.c
index 22e20c97..0771a08d 100644
--- a/i386/intel/pmap.c
+++ b/i386/intel/pmap.c
@@ -978,9 +978,9 @@ void pmap_init(void)
* and of the physical-to-virtual entries.
*/
s = (vm_size_t) sizeof(struct pmap);
- kmem_cache_init(&pmap_cache, "pmap", s, 0, NULL, NULL, NULL, 0);
+ kmem_cache_init(&pmap_cache, "pmap", s, 0, NULL, 0);
s = (vm_size_t) sizeof(struct pv_entry);
- kmem_cache_init(&pv_list_cache, "pv_entry", s, 0, NULL, NULL, NULL, 0);
+ kmem_cache_init(&pv_list_cache, "pv_entry", s, 0, NULL, 0);
#if NCPUS > 1
/*
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-18 21:41:18 +0000