VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: Al Viro <viro@ftp.linux.org.uk> 2011-08-18 20:03:49 +0100 committer: Richard Weinberger <richard@nod.at> 2011-11-02 14:14:53 +0100 commit: 51d34749051a6369093e5067ef67c17f17694921 parent: 7eb122555c8583e1601b7a620c5a88c1e06c3eac
Commit Summary:
um: merge arch/um/os-Linux/sys-{i386,x86_64}
Diffstat:
7 files changed, 49 insertions, 75 deletions
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile
index 7aec5bfea331..7879e76e998f 100644
--- a/arch/um/os-Linux/Makefile
+++ b/arch/um/os-Linux/Makefile
@@ -5,7 +5,7 @@
 
 obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \
 	registers.o sigio.o signal.o start_up.o time.o tty.o \
-	umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/
+	umid.o tls.o user_syms.o util.o drivers/ sys-$(HEADER_ARCH)/ skas/
 
 obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o
 
diff --git a/arch/um/os-Linux/sys-i386/Makefile b/arch/um/os-Linux/sys-x86/Makefile
similarity index 63%
rename from arch/um/os-Linux/sys-i386/Makefile
rename to arch/um/os-Linux/sys-x86/Makefile
index d491754bf701..22cc5073c020 100644
--- a/arch/um/os-Linux/sys-i386/Makefile
+++ b/arch/um/os-Linux/sys-x86/Makefile
@@ -3,7 +3,10 @@
 # Licensed under the GPL
 #
 
-obj-y = registers.o task_size.o tls.o
+obj-y = registers.o task_size.o
+
+obj-$(CONFIG_X86_32) += tls.o
+obj-$(CONFIG_64BIT) += prctl.o
 
 USER_OBJS := $(obj-y)
 
diff --git a/arch/um/os-Linux/sys-x86_64/prctl.c b/arch/um/os-Linux/sys-x86/prctl.c
similarity index 100%
rename from arch/um/os-Linux/sys-x86_64/prctl.c
rename to arch/um/os-Linux/sys-x86/prctl.c
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-x86/registers.c
similarity index 83%
rename from arch/um/os-Linux/sys-i386/registers.c
rename to arch/um/os-Linux/sys-x86/registers.c
index 913d811b38db..3a9b6247bbbc 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-x86/registers.c
@@ -24,6 +24,8 @@ int restore_fp_registers(int pid, unsigned long *fp_regs)
 	return 0;
 }
 
+#ifdef __i386__
+int have_fpx_regs = 1;
 int save_fpx_registers(int pid, unsigned long *fp_regs)
 {
 	if (ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0)
@@ -38,24 +40,6 @@ int restore_fpx_registers(int pid, unsigned long *fp_regs)
 	return 0;
 }
 
-unsigned long get_thread_reg(int reg, jmp_buf *buf)
-{
-	switch (reg) {
-	case EIP:
-		return buf[0]->__eip;
-	case UESP:
-		return buf[0]->__esp;
-	case EBP:
-		return buf[0]->__ebp;
-	default:
-		printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
-		       reg);
-		return 0;
-	}
-}
-
-int have_fpx_regs = 1;
-
 int get_fp_registers(int pid, unsigned long *regs)
 {
 	if (have_fpx_regs)
@@ -87,3 +71,41 @@ void arch_init_registers(int pid)
 
 	have_fpx_regs = 0;
 }
+#else
+
+int get_fp_registers(int pid, unsigned long *regs)
+{
+	return save_fp_registers(pid, regs);
+}
+
+int put_fp_registers(int pid, unsigned long *regs)
+{
+	return restore_fp_registers(pid, regs);
+}
+
+#endif
+
+unsigned long get_thread_reg(int reg, jmp_buf *buf)
+{
+	switch (reg) {
+#ifdef __i386__
+	case EIP:
+		return buf[0]->__eip;
+	case UESP:
+		return buf[0]->__esp;
+	case EBP:
+		return buf[0]->__ebp;
+#else
+	case RIP:
+		return buf[0]->__rip;
+	case RSP:
+		return buf[0]->__rsp;
+	case RBP:
+		return buf[0]->__rbp;
+#endif
+	default:
+		printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
+		       reg);
+		return 0;
+	}
+}
diff --git a/arch/um/os-Linux/sys-i386/task_size.c b/arch/um/os-Linux/sys-x86/task_size.c
similarity index 95%
rename from arch/um/os-Linux/sys-i386/task_size.c
rename to arch/um/os-Linux/sys-x86/task_size.c
index 4ce09b8e99c9..efb16c5c9bcf 100644
--- a/arch/um/os-Linux/sys-i386/task_size.c
+++ b/arch/um/os-Linux/sys-x86/task_size.c
@@ -4,6 +4,8 @@
 #include <sys/mman.h>
 #include "longjmp.h"
 
+#ifdef __i386__
+
 static jmp_buf buf;
 
 static void segfault(int sig)
@@ -136,3 +138,13 @@ out:
 
 	return top;
 }
+
+#else
+
+unsigned long os_get_top_address(void)
+{
+	/* The old value of CONFIG_TOP_ADDR */
+	return 0x7fc0000000;
+}
+
+#endif
diff --git a/arch/um/os-Linux/sys-i386/tls.c b/arch/um/os-Linux/sys-x86/tls.c
similarity index 100%
rename from arch/um/os-Linux/sys-i386/tls.c
rename to arch/um/os-Linux/sys-x86/tls.c
diff --git a/arch/um/os-Linux/sys-x86_64/Makefile b/arch/um/os-Linux/sys-x86_64/Makefile
deleted file mode 100644
index 58f6e0a38598..000000000000
--- a/arch/um/os-Linux/sys-x86_64/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
-# Licensed under the GPL
-#
-
-obj-y = registers.o prctl.o task_size.o
-
-USER_OBJS := $(obj-y)
-
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
deleted file mode 100644
index 0594d550c034..000000000000
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2006 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-
-#include <errno.h>
-#include <sys/ptrace.h>
-#define __FRAME_OFFSETS
-#include <asm/ptrace.h>
-#include "longjmp.h"
-
-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;
-}
-
-unsigned long get_thread_reg(int reg, jmp_buf *buf)
-{
-	switch (reg) {
-	case RIP:
-		return buf[0]->__rip;
-	case RSP:
-		return buf[0]->__rsp;
-	case RBP:
-		return buf[0]->__rbp;
-	default:
-		printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
-		       reg);
-		return 0;
-	}
-}
-
-int get_fp_registers(int pid, unsigned long *regs)
-{
-	return save_fp_registers(pid, regs);
-}
-
-int put_fp_registers(int pid, unsigned long *regs)
-{
-	return restore_fp_registers(pid, regs);
-}
diff --git a/arch/um/os-Linux/sys-x86_64/task_size.c b/arch/um/os-Linux/sys-x86_64/task_size.c
deleted file mode 100644
index 26a0dd1f349c..000000000000
--- a/arch/um/os-Linux/sys-x86_64/task_size.c
+++ /dev/null
@@ -1,5 +0,0 @@
-unsigned long os_get_top_address(unsigned long shift)
-{
-	/* The old value of CONFIG_TOP_ADDR */
-	return 0x7fc0000000;
-}