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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:26:58 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:05 -0700
commit77bf4400319db9d2a8af6b00c2be6faa0f3d07cb (patch)
treeddc8fd48349b8d4dd2c0b26bce7f52f79b4e4077 /arch/um/os-Linux/skas
parentae2587e41254e48e670346aefa332d7469d86352 (diff)
uml: remove code made redundant by CHOOSE_MODE removal
This patch makes a number of simplifications enabled by the removal of CHOOSE_MODE. There were lots of functions that looked like int foo(args){ foo_skas(args); } The bodies of foo_skas are now folded into foo, and their declarations (and sometimes entire header files) are deleted. In addition, the union uml_pt_regs, which was a union between the tt and skas register formats, is now a struct, with the tt-mode arm of the union being removed. It turns out that usr2_handler was unused, so it is gone. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/skas')
-rw-r--r--arch/um/os-Linux/skas/mem.c4
-rw-r--r--arch/um/os-Linux/skas/process.c24
-rw-r--r--arch/um/os-Linux/skas/trap.c14
3 files changed, 19 insertions, 23 deletions
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 383052baa166..ae7685710c46 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -294,7 +294,3 @@ int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
return ret;
}
-
-void before_mem_skas(unsigned long unused)
-{
-}
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index db020d21f132..eb027673f357 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -131,19 +131,19 @@ void get_skas_faultinfo(int pid, struct faultinfo * fi)
}
}
-static void handle_segv(int pid, union uml_pt_regs * regs)
+static void handle_segv(int pid, struct uml_pt_regs * regs)
{
- get_skas_faultinfo(pid, &regs->skas.faultinfo);
- segv(regs->skas.faultinfo, 0, 1, NULL);
+ get_skas_faultinfo(pid, &regs->faultinfo);
+ segv(regs->faultinfo, 0, 1, NULL);
}
/*To use the same value of using_sysemu as the caller, ask it that value (in local_using_sysemu)*/
-static void handle_trap(int pid, union uml_pt_regs *regs, int local_using_sysemu)
+static void handle_trap(int pid, struct uml_pt_regs *regs, int local_using_sysemu)
{
int err, status;
/* Mark this as a syscall */
- UPT_SYSCALL_NR(regs) = PT_SYSCALL_NR(regs->skas.regs);
+ UPT_SYSCALL_NR(regs) = PT_SYSCALL_NR(regs->regs);
if (!local_using_sysemu)
{
@@ -286,7 +286,7 @@ int start_userspace(unsigned long stub_stack)
return(pid);
}
-void userspace(union uml_pt_regs *regs)
+void userspace(struct uml_pt_regs *regs)
{
int err, status, op, pid = userspace_pid[0];
/* To prevent races if using_sysemu changes under us.*/
@@ -312,7 +312,7 @@ void userspace(union uml_pt_regs *regs)
panic("userspace - waitpid failed, errno = %d\n",
errno);
- regs->skas.is_user = 1;
+ regs->is_user = 1;
save_registers(pid, regs);
UPT_SYSCALL_NR(regs) = -1; /* Assume: It's not a syscall */
@@ -321,7 +321,7 @@ void userspace(union uml_pt_regs *regs)
switch(sig){
case SIGSEGV:
if(PTRACE_FULL_FAULTINFO || !ptrace_faultinfo){
- get_skas_faultinfo(pid, &regs->skas.faultinfo);
+ get_skas_faultinfo(pid, &regs->faultinfo);
(*sig_info[SIGSEGV])(SIGSEGV, regs);
}
else handle_segv(pid, regs);
@@ -351,7 +351,7 @@ void userspace(union uml_pt_regs *regs)
/* Avoid -ERESTARTSYS handling in host */
if(PT_SYSCALL_NR_OFFSET != PT_SYSCALL_RET_OFFSET)
- PT_SYSCALL_NR(regs->skas.regs) = -1;
+ PT_SYSCALL_NR(regs->regs) = -1;
}
}
}
@@ -578,16 +578,16 @@ void reboot_skas(void)
UML_LONGJMP(&initial_jmpbuf, INIT_JMP_REBOOT);
}
-void switch_mm_skas(struct mm_id *mm_idp)
+void __switch_mm(struct mm_id *mm_idp)
{
int err;
- /* FIXME: need cpu pid in switch_mm_skas */
+ /* FIXME: need cpu pid in __switch_mm */
if(proc_mm){
err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0,
mm_idp->u.mm_fd);
if(err)
- panic("switch_mm_skas - PTRACE_SWITCH_MM failed, "
+ panic("__switch_mm - PTRACE_SWITCH_MM failed, "
"errno = %d\n", errno);
}
else userspace_pid[0] = mm_idp->u.pid;
diff --git a/arch/um/os-Linux/skas/trap.c b/arch/um/os-Linux/skas/trap.c
index 3b600c2e63b8..d43e470227de 100644
--- a/arch/um/os-Linux/skas/trap.c
+++ b/arch/um/os-Linux/skas/trap.c
@@ -15,13 +15,13 @@
#include "sysdep/ptrace_user.h"
#include "os.h"
-static union uml_pt_regs ksig_regs[UM_NR_CPUS];
+static struct uml_pt_regs ksig_regs[UM_NR_CPUS];
void sig_handler_common_skas(int sig, void *sc_ptr)
{
struct sigcontext *sc = sc_ptr;
- union uml_pt_regs *r;
- void (*handler)(int, union uml_pt_regs *);
+ struct uml_pt_regs *r;
+ void (*handler)(int, struct uml_pt_regs *);
int save_user, save_errno = errno;
/* This is done because to allow SIGSEGV to be delivered inside a SEGV
@@ -42,12 +42,12 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
}
else r = TASK_REGS(get_current());
- save_user = r->skas.is_user;
- r->skas.is_user = 0;
+ save_user = r->is_user;
+ r->is_user = 0;
if ( sig == SIGFPE || sig == SIGSEGV ||
sig == SIGBUS || sig == SIGILL ||
sig == SIGTRAP ) {
- GET_FAULTINFO_FROM_SC(r->skas.faultinfo, sc);
+ GET_FAULTINFO_FROM_SC(r->faultinfo, sc);
}
change_sig(SIGUSR1, 1);
@@ -62,5 +62,5 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
handler(sig, r);
errno = save_errno;
- r->skas.is_user = save_user;
+ r->is_user = save_user;
}

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