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-rw-r--r--arch/um/include/kern_util.h2
-rw-r--r--arch/um/kernel/dyn.lds.S12
-rw-r--r--arch/um/kernel/irq.c7
-rw-r--r--arch/um/kernel/uml.lds.S11
-rw-r--r--arch/um/os-Linux/file.c3
-rw-r--r--arch/um/os-Linux/signal.c4
-rw-r--r--arch/um/os-Linux/sys-x86_64/registers.c15
-rw-r--r--arch/um/sys-x86_64/ptrace.c6
8 files changed, 37 insertions, 23 deletions
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index 8d7f7c1cb9c..6c2be26f1d7 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -117,7 +117,7 @@ extern void sigio_handler(int sig, union uml_pt_regs *regs);
extern void copy_sc(union uml_pt_regs *regs, void *from);
-unsigned long to_irq_stack(int sig, unsigned long *mask_out);
+extern unsigned long to_irq_stack(unsigned long *mask_out);
unsigned long from_irq_stack(int nested);
#endif
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 24547741b20..41850906116 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -71,11 +71,13 @@ SECTIONS
*(.gnu.warning)
. = ALIGN(4096);
- __syscall_stub_start = .;
- *(.__syscall_stub*)
- __syscall_stub_end = .;
- . = ALIGN(4096);
} =0x90909090
+ . = ALIGN(4096);
+ .syscall_stub : {
+ __syscall_stub_start = .;
+ *(.__syscall_stub*)
+ __syscall_stub_end = .;
+ }
.fini : {
KEEP (*(.fini))
} =0x90909090
@@ -138,8 +140,8 @@ SECTIONS
.got : { *(.got.plt) *(.got) }
_edata = .;
PROVIDE (edata = .);
- __bss_start = .;
.bss : {
+ __bss_start = .;
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 9870febdbea..cf0dd9cf8c4 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -518,13 +518,13 @@ int init_aio_irq(int irq, char *name, irq_handler_t handler)
static unsigned long pending_mask;
-unsigned long to_irq_stack(int sig, unsigned long *mask_out)
+unsigned long to_irq_stack(unsigned long *mask_out)
{
struct thread_info *ti;
unsigned long mask, old;
int nested;
- mask = xchg(&pending_mask, 1 << sig);
+ mask = xchg(&pending_mask, *mask_out);
if(mask != 0){
/* If any interrupts come in at this point, we want to
* make sure that their bits aren't lost by our
@@ -534,7 +534,7 @@ unsigned long to_irq_stack(int sig, unsigned long *mask_out)
* and pending_mask contains a bit for each interrupt
* that came in.
*/
- old = 1 << sig;
+ old = *mask_out;
do {
old |= mask;
mask = xchg(&pending_mask, old);
@@ -550,6 +550,7 @@ unsigned long to_irq_stack(int sig, unsigned long *mask_out)
task = cpu_tasks[ti->cpu].task;
tti = task_thread_info(task);
+
*ti = *tti;
ti->real_thread = tti;
task->stack = ti;
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 307b9373676..81acdc24348 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -44,12 +44,13 @@ SECTIONS
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t*)
+ }
- . = ALIGN(4096);
- __syscall_stub_start = .;
- *(.__syscall_stub*)
- __syscall_stub_end = .;
- . = ALIGN(4096);
+ . = ALIGN(4096);
+ .syscall_stub : {
+ __syscall_stub_start = .;
+ *(.__syscall_stub*)
+ __syscall_stub_end = .;
}
#include "asm/common.lds.S"
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 6f92f732d25..c3ecc2a84e0 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -320,7 +320,8 @@ int os_file_size(char *file, unsigned long long *size_out)
}
if(S_ISBLK(buf.ust_mode)){
- int fd, blocks;
+ int fd;
+ long blocks;
fd = os_open_file(file, of_read(OPENFLAGS()), 0);
if(fd < 0){
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 18e5c8b67eb..b98f7ea2d2f 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -119,7 +119,7 @@ void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
void handle_signal(int sig, struct sigcontext *sc)
{
- unsigned long pending = 0;
+ unsigned long pending = 1UL << sig;
do {
int nested, bail;
@@ -134,7 +134,7 @@ void handle_signal(int sig, struct sigcontext *sc)
* have to return, and the upper handler will deal
* with this interrupt.
*/
- bail = to_irq_stack(sig, &pending);
+ bail = to_irq_stack(&pending);
if(bail)
return;
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index e6fc2179d1b..9467315b805 100644
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -4,6 +4,7 @@
*/
#include <errno.h>
+#include <sys/ptrace.h>
#include <string.h>
#include "ptrace_user.h"
#include "uml-config.h"
@@ -17,6 +18,20 @@
static unsigned long exec_regs[MAX_REG_NR];
static unsigned long exec_fp_regs[HOST_FP_SIZE];
+int save_fp_registers(int pid, unsigned long *fp_regs)
+{
+ if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
+ return -errno;
+ return 0;
+}
+
+int restore_fp_registers(int pid, unsigned long *fp_regs)
+{
+ if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
+ return -errno;
+ return 0;
+}
+
void init_thread_registers(union uml_pt_regs *to)
{
memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs));
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index 55b66e09a98..1970d78aa52 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -156,12 +156,6 @@ int is_syscall(unsigned long addr)
return(instr == 0x050f);
}
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
-{
- panic("dump_fpu");
- return(1);
-}
-
int get_fpregs(unsigned long buf, struct task_struct *child)
{
panic("get_fpregs");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 02:17:20 +0000