now we don't mix host and guest signal frame layouts anymore; moreover,
we don't need host's struct sigcontext at all.
Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
arch/um/os-Linux/signal.c | 6 ++--
arch/um/os-Linux/sys-x86/Makefile | 2 +-
arch/um/os-Linux/sys-x86/mcontext.c | 31 ++++++++++++++++++++++++
arch/um/sys-x86/shared/sysdep/mcontext.h | 31 ++++++++++++++++++++++++
arch/um/sys-x86/shared/sysdep/sigcontext.h | 5 ----
arch/um/sys-x86/shared/sysdep/sigcontext_32.h | 32 -------------------------
arch/um/sys-x86/shared/sysdep/sigcontext_64.h | 32 -------------------------
arch/um/sys-x86/stub_segv.c | 2 +-
arch/um/sys-x86/user-offsets.c | 7 -----
9 files changed, 67 insertions(+), 81 deletions(-)
create mode 100644 arch/um/os-Linux/sys-x86/mcontext.c
create mode 100644 arch/um/sys-x86/shared/sysdep/mcontext.h
delete mode 100644 arch/um/sys-x86/shared/sysdep/sigcontext.h
delete mode 100644 arch/um/sys-x86/shared/sysdep/sigcontext_32.h
delete mode 100644 arch/um/sys-x86/shared/sysdep/sigcontext_64.h
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 07d9905..9f2c222 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -14,7 +14,7 @@
#include "os.h"
#include "process.h"
#include "sysdep/barrier.h"
-#include "sysdep/sigcontext.h"
+#include "sysdep/mcontext.h"
void (*sig_info[NSIG])(int, struct uml_pt_regs *) = {
[SIGTRAP] = relay_signal,
@@ -34,7 +34,7 @@ static void sig_handler_common(int sig, mcontext_t *mc)
r.is_user = 0;
if (sig == SIGSEGV) {
/* For segfaults, we want the data from the sigcontext. */
- copy_sc(&r, (struct sigcontext *)mc);
+ get_regs_from_mc(&r, mc);
GET_FAULTINFO_FROM_MC(r.faultinfo, mc);
}
@@ -84,7 +84,7 @@ static void real_alarm_handler(mcontext_t *mc)
struct uml_pt_regs regs;
if (mc != NULL)
- copy_sc(®s, (struct sigcontext *)mc);
+ get_regs_from_mc(®s, mc);
regs.is_user = 0;
unblock_signals();
timer_handler(SIGVTALRM, ®s);
diff --git a/arch/um/os-Linux/sys-x86/Makefile
b/arch/um/os-Linux/sys-x86/Makefile
index 22cc507..253bfb8 100644
--- a/arch/um/os-Linux/sys-x86/Makefile
+++ b/arch/um/os-Linux/sys-x86/Makefile
@@ -3,7 +3,7 @@
# Licensed under the GPL
#
-obj-y = registers.o task_size.o
+obj-y = registers.o task_size.o mcontext.o
obj-$(CONFIG_X86_32) += tls.o
obj-$(CONFIG_64BIT) += prctl.o
diff --git a/arch/um/os-Linux/sys-x86/mcontext.c
b/arch/um/os-Linux/sys-x86/mcontext.c
new file mode 100644
index 0000000..1d33d72
--- /dev/null
+++ b/arch/um/os-Linux/sys-x86/mcontext.c
@@ -0,0 +1,31 @@
+#include <sys/ucontext.h>
+#define __FRAME_OFFSETS
+#include <asm/ptrace.h>
+#include <sysdep/ptrace.h>
+
+void get_regs_from_mc(struct uml_pt_regs *regs, mcontext_t *mc)
+{
+#ifdef __i386__
+#define COPY2(X,Y) regs->gp[X] = mc->gregs[REG_##Y]
+#define COPY(X) regs->gp[X] = mc->gregs[REG_##X]
+#define COPY_SEG(X) regs->gp[X] = mc->gregs[REG_##X] & 0xffff;
+#define COPY_SEG_CPL3(X) regs->gp[X] = (mc->gregs[REG_##X] & 0xffff) | 3;
+ COPY_SEG(GS); COPY_SEG(FS); COPY_SEG(ES); COPY_SEG(DS);
+ COPY(EDI); COPY(ESI); COPY(EBP);
+ COPY2(UESP, ESP); /* sic */
+ COPY(EBX); COPY(EDX); COPY(ECX); COPY(EAX);
+ COPY(EIP); COPY_SEG_CPL3(CS); COPY(EFL); COPY_SEG_CPL3(SS);
+#else
+#define COPY2(X,Y) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##Y]
+#define COPY(X) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##X]
+ COPY(R8); COPY(R9); COPY(R10); COPY(R11);
+ COPY(R12); COPY(R13); COPY(R14); COPY(R15);
+ COPY(RDI); COPY(RSI); COPY(RBP); COPY(RBX);
+ COPY(RDX); COPY(RAX); COPY(RCX); COPY(RSP);
+ COPY(RIP);
+ COPY2(EFLAGS, EFL);
+ COPY2(CS, CSGSFS);
+ regs->gp[CS / sizeof(unsigned long)] &= 0xffff;
+ regs->gp[CS / sizeof(unsigned long)] |= 3;
+#endif
+}
diff --git a/arch/um/sys-x86/shared/sysdep/mcontext.h
b/arch/um/sys-x86/shared/sysdep/mcontext.h
new file mode 100644
index 0000000..b724c54
--- /dev/null
+++ b/arch/um/sys-x86/shared/sysdep/mcontext.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SYS_SIGCONTEXT_X86_H
+#define __SYS_SIGCONTEXT_X86_H
+
+extern void get_regs_from_mc(struct uml_pt_regs *, mcontext_t *);
+
+#ifdef __i386__
+
+#define GET_FAULTINFO_FROM_MC(fi, mc) \
+ { \
+ (fi).cr2 = (mc)->cr2; \
+ (fi).error_code = (mc)->gregs[REG_ERR]; \
+ (fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
+ }
+
+#else
+
+#define GET_FAULTINFO_FROM_MC(fi, mc) \
+ { \
+ (fi).cr2 = (mc)->gregs[REG_CR2]; \
+ (fi).error_code = (mc)->gregs[REG_ERR]; \
+ (fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
+ }
+
+#endif
+
+#endif
diff --git a/arch/um/sys-x86/shared/sysdep/sigcontext.h
b/arch/um/sys-x86/shared/sysdep/sigcontext.h
deleted file mode 100644
index f7f49f4..0000000
--- a/arch/um/sys-x86/shared/sysdep/sigcontext.h
+++ /dev/null
@@ -1,5 +0,0 @@
-#ifdef __i386__
-#include "sigcontext_32.h"
-#else
-#include "sigcontext_64.h"
-#endif
diff --git a/arch/um/sys-x86/shared/sysdep/sigcontext_32.h
b/arch/um/sys-x86/shared/sysdep/sigcontext_32.h
deleted file mode 100644
index 548c3cd..0000000
--- a/arch/um/sys-x86/shared/sysdep/sigcontext_32.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYS_SIGCONTEXT_I386_H
-#define __SYS_SIGCONTEXT_I386_H
-
-#include <generated/user_constants.h>
-
-#define SC_OFFSET(sc, field) \
- *((unsigned long *) &(((char *) (sc))[HOST_##field]))
-
-#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
-#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
-#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
-
-#define GET_FAULTINFO_FROM_SC(fi, sc) \
- { \
- (fi).cr2 = SC_CR2(sc); \
- (fi).error_code = SC_ERR(sc); \
- (fi).trap_no = SC_TRAPNO(sc); \
- }
-
-#define GET_FAULTINFO_FROM_MC(fi, mc) \
- { \
- (fi).cr2 = (mc)->cr2; \
- (fi).error_code = (mc)->gregs[REG_ERR]; \
- (fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
- }
-
-#endif
diff --git a/arch/um/sys-x86/shared/sysdep/sigcontext_64.h
b/arch/um/sys-x86/shared/sysdep/sigcontext_64.h
deleted file mode 100644
index 5c4a6a3..0000000
--- a/arch/um/sys-x86/shared/sysdep/sigcontext_64.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright 2003 PathScale, Inc.
- *
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_X86_64_SIGCONTEXT_H
-#define __SYSDEP_X86_64_SIGCONTEXT_H
-
-#include <generated/user_constants.h>
-
-#define SC_OFFSET(sc, field) \
- *((unsigned long *) &(((char *) (sc))[HOST_##field]))
-#define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
-#define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
-#define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
-
-#define GET_FAULTINFO_FROM_SC(fi, sc) \
- { \
- (fi).cr2 = SC_CR2(sc); \
- (fi).error_code = SC_ERR(sc); \
- (fi).trap_no = SC_TRAPNO(sc); \
- }
-
-#define GET_FAULTINFO_FROM_MC(fi, mc) \
- { \
- (fi).cr2 = (mc)->gregs[REG_CR2]; \
- (fi).error_code = (mc)->gregs[REG_ERR]; \
- (fi).trap_no = (mc)->gregs[REG_TRAPNO]; \
- }
-
-#endif
diff --git a/arch/um/sys-x86/stub_segv.c b/arch/um/sys-x86/stub_segv.c
index bd2eaf6..b7450bd 100644
--- a/arch/um/sys-x86/stub_segv.c
+++ b/arch/um/sys-x86/stub_segv.c
@@ -5,7 +5,7 @@
#include "sysdep/stub.h"
#include "sysdep/faultinfo.h"
-#include "sysdep/sigcontext.h"
+#include "sysdep/mcontext.h"
void __attribute__ ((__section__ (".__syscall_stub")))
stub_segv_handler(int sig, siginfo_t *info, void *p)
diff --git a/arch/um/sys-x86/user-offsets.c b/arch/um/sys-x86/user-offsets.c
index 718f0c0..3c19c48 100644
--- a/arch/um/sys-x86/user-offsets.c
+++ b/arch/um/sys-x86/user-offsets.c
@@ -14,15 +14,8 @@
#define DEFINE_LONGS(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned
long)))
-#define OFFSET(sym, str, mem) \
- DEFINE(sym, offsetof(struct str, mem));
-
void foo(void)
{
- OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
- OFFSET(HOST_SC_ERR, sigcontext, err);
- OFFSET(HOST_SC_CR2, sigcontext, cr2);
-
#ifdef __i386__
DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
--
1.7.2.5
------------------------------------------------------------------------------
Get a FREE DOWNLOAD! and learn more about uberSVN rich system,
user administration capabilities and model configuration. Take
the hassle out of deploying and managing Subversion and the
tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
