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[Xen-devel] [PATCH v6 03/10] x86: merge stuff from asm-x86/x86_64/asm_defns.h to asm-x86/asm_defns.h



This patch move stuff unchanged from asm-x86/x86_64/asm_defns.h to
asm-x86/asm_defns.h

Signed-off-by: Feng Wu <feng.wu@xxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/include/asm-x86/asm_defns.h        | 217 +++++++++++++++++++++++++++++++-
 xen/include/asm-x86/x86_64/asm_defns.h | 222 ---------------------------------
 2 files changed, 216 insertions(+), 223 deletions(-)
 delete mode 100644 xen/include/asm-x86/x86_64/asm_defns.h

diff --git a/xen/include/asm-x86/asm_defns.h b/xen/include/asm-x86/asm_defns.h
index 2b055f5..c4b2bb2 100644
--- a/xen/include/asm-x86/asm_defns.h
+++ b/xen/include/asm-x86/asm_defns.h
@@ -7,12 +7,65 @@
 #include <asm/asm-offsets.h>
 #endif
 #include <asm/processor.h>
+#include <asm/percpu.h>
 
 #ifndef __ASSEMBLY__
 void ret_from_intr(void);
 #endif
 
-#include <asm/x86_64/asm_defns.h>
+#ifdef CONFIG_FRAME_POINTER
+/* Indicate special exception stack frame by inverting the frame pointer. */
+#define SETUP_EXCEPTION_FRAME_POINTER(offs)     \
+        leaq  offs(%rsp),%rbp;                  \
+        notq  %rbp
+#else
+#define SETUP_EXCEPTION_FRAME_POINTER(offs)
+#endif
+
+#ifndef NDEBUG
+#define ASSERT_INTERRUPT_STATUS(x)              \
+        pushf;                                  \
+        testb $X86_EFLAGS_IF>>8,1(%rsp);        \
+        j##x  1f;                               \
+        ud2a;                                   \
+1:      addq  $8,%rsp;
+#else
+#define ASSERT_INTERRUPT_STATUS(x)
+#endif
+
+#define ASSERT_INTERRUPTS_ENABLED  ASSERT_INTERRUPT_STATUS(nz)
+#define ASSERT_INTERRUPTS_DISABLED ASSERT_INTERRUPT_STATUS(z)
+
+/*
+ * This flag is set in an exception frame when registers R12-R15 did not get
+ * saved.
+ */
+#define _TRAP_regs_partial 16
+#define TRAP_regs_partial  (1 << _TRAP_regs_partial)
+/*
+ * This flag gets set in an exception frame when registers R12-R15 possibly
+ * get modified from their originally saved values and hence need to be
+ * restored even if the normal call flow would restore register values.
+ *
+ * The flag being set implies _TRAP_regs_partial to be unset. Restoring
+ * R12-R15 thus is
+ * - required when this flag is set,
+ * - safe when _TRAP_regs_partial is unset.
+ */
+#define _TRAP_regs_dirty   17
+#define TRAP_regs_dirty    (1 << _TRAP_regs_dirty)
+
+#define mark_regs_dirty(r) ({ \
+        struct cpu_user_regs *r__ = (r); \
+        ASSERT(!((r__)->entry_vector & TRAP_regs_partial)); \
+        r__->entry_vector |= TRAP_regs_dirty; \
+})
+
+#ifdef __ASSEMBLY__
+# define _ASM_EX(p) p-.
+#else
+# define _ASM_EX(p) #p "-."
+#endif
 
 /* Exception table entry */
 #ifdef __ASSEMBLY__
@@ -106,4 +159,166 @@ void ret_from_intr(void);
 
 #endif
 
+#ifdef __ASSEMBLY__
+.macro SAVE_ALL
+        addq  $-(UREGS_error_code-UREGS_r15), %rsp
+        cld
+        movq  %rdi,UREGS_rdi(%rsp)
+        movq  %rsi,UREGS_rsi(%rsp)
+        movq  %rdx,UREGS_rdx(%rsp)
+        movq  %rcx,UREGS_rcx(%rsp)
+        movq  %rax,UREGS_rax(%rsp)
+        movq  %r8,UREGS_r8(%rsp)
+        movq  %r9,UREGS_r9(%rsp)
+        movq  %r10,UREGS_r10(%rsp)
+        movq  %r11,UREGS_r11(%rsp)
+        movq  %rbx,UREGS_rbx(%rsp)
+        movq  %rbp,UREGS_rbp(%rsp)
+        SETUP_EXCEPTION_FRAME_POINTER(UREGS_rbp)
+        movq  %r12,UREGS_r12(%rsp)
+        movq  %r13,UREGS_r13(%rsp)
+        movq  %r14,UREGS_r14(%rsp)
+        movq  %r15,UREGS_r15(%rsp)
+.endm
+
+/*
+ * Save all registers not preserved by C code or used in entry/exit code. Mark
+ * the frame as partial.
+ *
+ * @type: exception type
+ * @compat: R8-R15 don't need saving, and the frame nevertheless is complete
+ */
+.macro SAVE_VOLATILE type compat=0
+.if \compat
+        movl  $\type,UREGS_entry_vector-UREGS_error_code(%rsp)
+.else
+        movl  $\type|TRAP_regs_partial,\
+              UREGS_entry_vector-UREGS_error_code(%rsp)
+.endif
+        addq  $-(UREGS_error_code-UREGS_r15),%rsp
+        cld
+        movq  %rdi,UREGS_rdi(%rsp)
+        movq  %rsi,UREGS_rsi(%rsp)
+        movq  %rdx,UREGS_rdx(%rsp)
+        movq  %rcx,UREGS_rcx(%rsp)
+        movq  %rax,UREGS_rax(%rsp)
+.if !\compat
+        movq  %r8,UREGS_r8(%rsp)
+        movq  %r9,UREGS_r9(%rsp)
+        movq  %r10,UREGS_r10(%rsp)
+        movq  %r11,UREGS_r11(%rsp)
+.endif
+        movq  %rbx,UREGS_rbx(%rsp)
+        movq  %rbp,UREGS_rbp(%rsp)
+        SETUP_EXCEPTION_FRAME_POINTER(UREGS_rbp)
+.endm
+
+/*
+ * Complete a frame potentially only partially saved.
+ */
+.macro SAVE_PRESERVED
+        btrl  $_TRAP_regs_partial,UREGS_entry_vector(%rsp)
+        jnc   987f
+        movq  %r12,UREGS_r12(%rsp)
+        movq  %r13,UREGS_r13(%rsp)
+        movq  %r14,UREGS_r14(%rsp)
+        movq  %r15,UREGS_r15(%rsp)
+987:
+.endm
+
+/*
+ * Reload registers not preserved by C code from frame.
+ *
+ * @compat: R8-R11 don't need reloading
+ *
+ * For the way it is used in RESTORE_ALL, this macro must preserve EFLAGS.ZF.
+ */
+.macro LOAD_C_CLOBBERED compat=0
+.if !\compat
+        movq  UREGS_r11(%rsp),%r11
+        movq  UREGS_r10(%rsp),%r10
+        movq  UREGS_r9(%rsp),%r9
+        movq  UREGS_r8(%rsp),%r8
+.endif
+        movq  UREGS_rax(%rsp),%rax
+        movq  UREGS_rcx(%rsp),%rcx
+        movq  UREGS_rdx(%rsp),%rdx
+        movq  UREGS_rsi(%rsp),%rsi
+        movq  UREGS_rdi(%rsp),%rdi
+.endm
+
+/*
+ * Restore all previously saved registers.
+ *
+ * @adj: extra stack pointer adjustment to be folded into the adjustment done
+ *       anyway at the end of the macro
+ * @compat: R8-R15 don't need reloading
+ */
+.macro RESTORE_ALL adj=0 compat=0
+.if !\compat
+        testl $TRAP_regs_dirty,UREGS_entry_vector(%rsp)
+.endif
+        LOAD_C_CLOBBERED \compat
+.if !\compat
+        jz    987f
+        movq  UREGS_r15(%rsp),%r15
+        movq  UREGS_r14(%rsp),%r14
+        movq  UREGS_r13(%rsp),%r13
+        movq  UREGS_r12(%rsp),%r12
+#ifndef NDEBUG
+        .subsection 1
+987:    testl $TRAP_regs_partial,UREGS_entry_vector(%rsp)
+        jnz   987f
+        cmpq  UREGS_r15(%rsp),%r15
+        jne   789f
+        cmpq  UREGS_r14(%rsp),%r14
+        jne   789f
+        cmpq  UREGS_r13(%rsp),%r13
+        jne   789f
+        cmpq  UREGS_r12(%rsp),%r12
+        je    987f
+789:    ud2
+        .subsection 0
+#endif
+.endif
+987:    movq  UREGS_rbp(%rsp),%rbp
+        movq  UREGS_rbx(%rsp),%rbx
+        subq  $-(UREGS_error_code-UREGS_r15+\adj), %rsp
+.endm
+
+#endif
+
+#ifdef PERF_COUNTERS
+#define PERFC_INCR(_name,_idx,_cur)             \
+        pushq _cur;                             \
+        movslq VCPU_processor(_cur),_cur;       \
+        pushq %rdx;                             \
+        leaq __per_cpu_offset(%rip),%rdx;       \
+        movq (%rdx,_cur,8),_cur;                \
+        leaq per_cpu__perfcounters(%rip),%rdx;  \
+        addq %rdx,_cur;                         \
+        popq %rdx;                              \
+        incl ASM_PERFC_##_name*4(_cur,_idx,4);  \
+        popq _cur
+#else
+#define PERFC_INCR(_name,_idx,_cur)
+#endif
+
+/* Work around AMD erratum #88 */
+#define safe_swapgs                             \
+        "mfence; swapgs;"
+
+#ifdef __sun__
+#define REX64_PREFIX "rex64\\"
+#elif defined(__clang__)
+#define REX64_PREFIX ".byte 0x48; "
+#else
+#define REX64_PREFIX "rex64/"
+#endif
+
+#define BUILD_IRQ(nr)                           \
+    "pushq $0\n\t"                              \
+    "movl $"#nr",4(%rsp)\n\t"                   \
+    "jmp common_interrupt"
+
 #endif /* __X86_ASM_DEFNS_H__ */
diff --git a/xen/include/asm-x86/x86_64/asm_defns.h 
b/xen/include/asm-x86/x86_64/asm_defns.h
deleted file mode 100644
index aedb2da..0000000
--- a/xen/include/asm-x86/x86_64/asm_defns.h
+++ /dev/null
@@ -1,222 +0,0 @@
-#ifndef __X86_64_ASM_DEFNS_H__
-#define __X86_64_ASM_DEFNS_H__
-
-#include <asm/percpu.h>
-
-#ifdef CONFIG_FRAME_POINTER
-/* Indicate special exception stack frame by inverting the frame pointer. */
-#define SETUP_EXCEPTION_FRAME_POINTER(offs)     \
-        leaq  offs(%rsp),%rbp;                  \
-        notq  %rbp
-#else
-#define SETUP_EXCEPTION_FRAME_POINTER(offs)
-#endif
-
-#ifndef NDEBUG
-#define ASSERT_INTERRUPT_STATUS(x)              \
-        pushf;                                  \
-        testb $X86_EFLAGS_IF>>8,1(%rsp);        \
-        j##x  1f;                               \
-        ud2a;                                   \
-1:      addq  $8,%rsp;
-#else
-#define ASSERT_INTERRUPT_STATUS(x)
-#endif
-
-#define ASSERT_INTERRUPTS_ENABLED  ASSERT_INTERRUPT_STATUS(nz)
-#define ASSERT_INTERRUPTS_DISABLED ASSERT_INTERRUPT_STATUS(z)
-
-/*
- * This flag is set in an exception frame when registers R12-R15 did not get
- * saved.
- */
-#define _TRAP_regs_partial 16
-#define TRAP_regs_partial  (1 << _TRAP_regs_partial)
-/*
- * This flag gets set in an exception frame when registers R12-R15 possibly
- * get modified from their originally saved values and hence need to be
- * restored even if the normal call flow would restore register values.
- *
- * The flag being set implies _TRAP_regs_partial to be unset. Restoring
- * R12-R15 thus is
- * - required when this flag is set,
- * - safe when _TRAP_regs_partial is unset.
- */
-#define _TRAP_regs_dirty   17
-#define TRAP_regs_dirty    (1 << _TRAP_regs_dirty)
-
-#define mark_regs_dirty(r) ({ \
-        struct cpu_user_regs *r__ = (r); \
-        ASSERT(!((r__)->entry_vector & TRAP_regs_partial)); \
-        r__->entry_vector |= TRAP_regs_dirty; \
-})
-
-#ifdef __ASSEMBLY__
-.macro SAVE_ALL
-        addq  $-(UREGS_error_code-UREGS_r15), %rsp
-        cld
-        movq  %rdi,UREGS_rdi(%rsp)
-        movq  %rsi,UREGS_rsi(%rsp)
-        movq  %rdx,UREGS_rdx(%rsp)
-        movq  %rcx,UREGS_rcx(%rsp)
-        movq  %rax,UREGS_rax(%rsp)
-        movq  %r8,UREGS_r8(%rsp)
-        movq  %r9,UREGS_r9(%rsp)
-        movq  %r10,UREGS_r10(%rsp)
-        movq  %r11,UREGS_r11(%rsp)
-        movq  %rbx,UREGS_rbx(%rsp)
-        movq  %rbp,UREGS_rbp(%rsp)
-        SETUP_EXCEPTION_FRAME_POINTER(UREGS_rbp)
-        movq  %r12,UREGS_r12(%rsp)
-        movq  %r13,UREGS_r13(%rsp)
-        movq  %r14,UREGS_r14(%rsp)
-        movq  %r15,UREGS_r15(%rsp)
-.endm
-
-/*
- * Save all registers not preserved by C code or used in entry/exit code. Mark
- * the frame as partial.
- *
- * @type: exception type
- * @compat: R8-R15 don't need saving, and the frame nevertheless is complete
- */
-.macro SAVE_VOLATILE type compat=0
-.if \compat
-        movl  $\type,UREGS_entry_vector-UREGS_error_code(%rsp)
-.else
-        movl  $\type|TRAP_regs_partial,\
-              UREGS_entry_vector-UREGS_error_code(%rsp)
-.endif
-        addq  $-(UREGS_error_code-UREGS_r15),%rsp
-        cld
-        movq  %rdi,UREGS_rdi(%rsp)
-        movq  %rsi,UREGS_rsi(%rsp)
-        movq  %rdx,UREGS_rdx(%rsp)
-        movq  %rcx,UREGS_rcx(%rsp)
-        movq  %rax,UREGS_rax(%rsp)
-.if !\compat
-        movq  %r8,UREGS_r8(%rsp)
-        movq  %r9,UREGS_r9(%rsp)
-        movq  %r10,UREGS_r10(%rsp)
-        movq  %r11,UREGS_r11(%rsp)
-.endif
-        movq  %rbx,UREGS_rbx(%rsp)
-        movq  %rbp,UREGS_rbp(%rsp)
-        SETUP_EXCEPTION_FRAME_POINTER(UREGS_rbp)
-.endm
-
-/*
- * Complete a frame potentially only partially saved.
- */
-.macro SAVE_PRESERVED
-        btrl  $_TRAP_regs_partial,UREGS_entry_vector(%rsp)
-        jnc   987f
-        movq  %r12,UREGS_r12(%rsp)
-        movq  %r13,UREGS_r13(%rsp)
-        movq  %r14,UREGS_r14(%rsp)
-        movq  %r15,UREGS_r15(%rsp)
-987:
-.endm
-
-/*
- * Reload registers not preserved by C code from frame.
- *
- * @compat: R8-R11 don't need reloading
- *
- * For the way it is used in RESTORE_ALL, this macro must preserve EFLAGS.ZF.
- */
-.macro LOAD_C_CLOBBERED compat=0
-.if !\compat
-        movq  UREGS_r11(%rsp),%r11
-        movq  UREGS_r10(%rsp),%r10
-        movq  UREGS_r9(%rsp),%r9
-        movq  UREGS_r8(%rsp),%r8
-.endif
-        movq  UREGS_rax(%rsp),%rax
-        movq  UREGS_rcx(%rsp),%rcx
-        movq  UREGS_rdx(%rsp),%rdx
-        movq  UREGS_rsi(%rsp),%rsi
-        movq  UREGS_rdi(%rsp),%rdi
-.endm
-
-/*
- * Restore all previously saved registers.
- *
- * @adj: extra stack pointer adjustment to be folded into the adjustment done
- *       anyway at the end of the macro
- * @compat: R8-R15 don't need reloading
- */
-.macro RESTORE_ALL adj=0 compat=0
-.if !\compat
-        testl $TRAP_regs_dirty,UREGS_entry_vector(%rsp)
-.endif
-        LOAD_C_CLOBBERED \compat
-.if !\compat
-        jz    987f
-        movq  UREGS_r15(%rsp),%r15
-        movq  UREGS_r14(%rsp),%r14
-        movq  UREGS_r13(%rsp),%r13
-        movq  UREGS_r12(%rsp),%r12
-#ifndef NDEBUG
-        .subsection 1
-987:    testl $TRAP_regs_partial,UREGS_entry_vector(%rsp)
-        jnz   987f
-        cmpq  UREGS_r15(%rsp),%r15
-        jne   789f
-        cmpq  UREGS_r14(%rsp),%r14
-        jne   789f
-        cmpq  UREGS_r13(%rsp),%r13
-        jne   789f
-        cmpq  UREGS_r12(%rsp),%r12
-        je    987f
-789:    ud2
-        .subsection 0
-#endif
-.endif
-987:    movq  UREGS_rbp(%rsp),%rbp
-        movq  UREGS_rbx(%rsp),%rbx
-        subq  $-(UREGS_error_code-UREGS_r15+\adj), %rsp
-.endm
-
-#endif
-
-#ifdef PERF_COUNTERS
-#define PERFC_INCR(_name,_idx,_cur)             \
-        pushq _cur;                             \
-        movslq VCPU_processor(_cur),_cur;       \
-        pushq %rdx;                             \
-        leaq __per_cpu_offset(%rip),%rdx;       \
-        movq (%rdx,_cur,8),_cur;                \
-        leaq per_cpu__perfcounters(%rip),%rdx;  \
-        addq %rdx,_cur;                         \
-        popq %rdx;                              \
-        incl ASM_PERFC_##_name*4(_cur,_idx,4);  \
-        popq _cur
-#else
-#define PERFC_INCR(_name,_idx,_cur)
-#endif
-
-/* Work around AMD erratum #88 */
-#define safe_swapgs                             \
-        "mfence; swapgs;"
-
-#ifdef __sun__
-#define REX64_PREFIX "rex64\\"
-#elif defined(__clang__)
-#define REX64_PREFIX ".byte 0x48; "
-#else
-#define REX64_PREFIX "rex64/"
-#endif
-
-#define BUILD_IRQ(nr)                           \
-    "pushq $0\n\t"                              \
-    "movl $"#nr",4(%rsp)\n\t"                   \
-    "jmp common_interrupt"
-
-#ifdef __ASSEMBLY__
-# define _ASM_EX(p) p-.
-#else
-# define _ASM_EX(p) #p "-."
-#endif
-
-#endif /* __X86_64_ASM_DEFNS_H__ */
-- 
1.8.3.1


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