Most hypercall are identical in source code, using a common
MACRO to define 0/1/2 parameter(s) hypercall is much simple.
arch/ia64/xen/hypercall.S | 154
+++++++++++++-----------------------------
include/asm-ia64/xen/privop.h | 26 -------
2 files changed, 51 insertions(+), 129 deletions(-)
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@xxxxxxxxx>
diff --git a/arch/ia64/xen/hypercall.S b/arch/ia64/xen/hypercall.S
index 615dad9..ce7b015 100644
--- a/arch/ia64/xen/hypercall.S
+++ b/arch/ia64/xen/hypercall.S
@@ -2,79 +2,64 @@
* Support routines for Xen hypercalls
*
* Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@xxxxxx>
+ * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@xxxxxxxxx>
*/
#include <asm/asmmacro.h>
#include <asm/intrinsics.h>
-GLOBAL_ENTRY(xen_get_psr)
- XEN_HYPER_GET_PSR
- br.ret.sptk.many rp
- ;;
-END(xen_get_psr)
-
-GLOBAL_ENTRY(xen_get_ivr)
- XEN_HYPER_GET_IVR
- br.ret.sptk.many rp
- ;;
-END(xen_get_ivr)
-
-GLOBAL_ENTRY(xen_get_tpr)
- XEN_HYPER_GET_TPR
- br.ret.sptk.many rp
- ;;
-END(xen_get_tpr)
-
-GLOBAL_ENTRY(xen_set_tpr)
- mov r8=r32
- XEN_HYPER_SET_TPR
- br.ret.sptk.many rp
- ;;
-END(xen_set_tpr)
-
-GLOBAL_ENTRY(xen_eoi)
- mov r8=r32
- XEN_HYPER_EOI
- br.ret.sptk.many rp
- ;;
-END(xen_eoi)
-
-GLOBAL_ENTRY(xen_thash)
- mov r8=r32
- XEN_HYPER_THASH
- br.ret.sptk.many rp
- ;;
-END(xen_thash)
-
-GLOBAL_ENTRY(xen_set_itm)
- mov r8=r32
- XEN_HYPER_SET_ITM
- br.ret.sptk.many rp
- ;;
-END(xen_set_itm)
+/*
+ * Hypercalls without parameter.
+ */
+#define __HCALL0(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
-GLOBAL_ENTRY(xen_ptcga)
- mov r8=r32
- mov r9=r33
- XEN_HYPER_PTC_GA
- br.ret.sptk.many rp
- ;;
-END(xen_ptcga)
+/*
+ * Hypercalls with 1 parameter.
+ */
+#define __HCALL1(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ mov r8=r32; \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
-GLOBAL_ENTRY(xen_get_rr)
- mov r8=r32
- XEN_HYPER_GET_RR
- br.ret.sptk.many rp
- ;;
-END(xen_get_rr)
+/*
+ * Hypercalls with 2 parameters.
+ */
+#define __HCALL2(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ mov r8=r32; \
+ mov r9=r33; \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
+
+__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
+__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
+__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
+__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
+
+__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
+__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
+__HCALL1(xen_thash, HYPERPRIVOP_THASH)
+__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
+__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
+__HCALL1(xen_fc, HYPERPRIVOP_FC)
+__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
+__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
+
+__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
+__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
+__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
-GLOBAL_ENTRY(xen_set_rr)
- mov r8=r32
- mov r9=r33
- XEN_HYPER_SET_RR
- br.ret.sptk.many rp
- ;;
-END(xen_set_rr)
+#ifdef CONFIG_IA32_SUPPORT
+__HCALL1(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
+__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG) // refer SDM vol1 3.1.8
+#endif /* CONFIG_IA32_SUPPORT */
GLOBAL_ENTRY(xen_set_rr0_to_rr4)
mov r8=r32
@@ -87,45 +72,6 @@ GLOBAL_ENTRY(xen_set_rr0_to_rr4)
;;
END(xen_set_rr0_to_rr4)
-GLOBAL_ENTRY(xen_set_kr)
- mov r8=r32
- mov r9=r33
- XEN_HYPER_SET_KR
- br.ret.sptk.many rp
-END(xen_set_kr)
-
-GLOBAL_ENTRY(xen_fc)
- mov r8=r32
- XEN_HYPER_FC
- br.ret.sptk.many rp
-END(xen_fc)
-
-GLOBAL_ENTRY(xen_get_cpuid)
- mov r8=r32
- XEN_HYPER_GET_CPUID
- br.ret.sptk.many rp
-END(xen_get_cpuid)
-
-GLOBAL_ENTRY(xen_get_pmd)
- mov r8=r32
- XEN_HYPER_GET_PMD
- br.ret.sptk.many rp
-END(xen_get_pmd)
-
-#ifdef CONFIG_IA32_SUPPORT
-GLOBAL_ENTRY(xen_get_eflag)
- XEN_HYPER_GET_EFLAG
- br.ret.sptk.many rp
-END(xen_get_eflag)
-
-// some bits aren't set if pl!=0, see SDM vol1 3.1.8
-GLOBAL_ENTRY(xen_set_eflag)
- mov r8=r32
- XEN_HYPER_SET_EFLAG
- br.ret.sptk.many rp
-END(xen_set_eflag)
-#endif /* CONFIG_IA32_SUPPORT */
-
GLOBAL_ENTRY(xen_send_ipi)
mov r14=r32
mov r15=r33
diff --git a/include/asm-ia64/xen/privop.h
b/include/asm-ia64/xen/privop.h
index 7657d37..e69380a 100644
--- a/include/asm-ia64/xen/privop.h
+++ b/include/asm-ia64/xen/privop.h
@@ -35,22 +35,8 @@
#define XEN_HYPER_ITC_I break HYPERPRIVOP_ITC_I
#define XEN_HYPER_SSM_I break HYPERPRIVOP_SSM_I
#define XEN_HYPER_GET_IVR break HYPERPRIVOP_GET_IVR
-#define XEN_HYPER_GET_TPR break HYPERPRIVOP_GET_TPR
-#define XEN_HYPER_SET_TPR break HYPERPRIVOP_SET_TPR
-#define XEN_HYPER_EOI break HYPERPRIVOP_EOI
-#define XEN_HYPER_SET_ITM break HYPERPRIVOP_SET_ITM
#define XEN_HYPER_THASH break HYPERPRIVOP_THASH
-#define XEN_HYPER_PTC_GA break HYPERPRIVOP_PTC_GA
#define XEN_HYPER_ITR_D break HYPERPRIVOP_ITR_D
-#define XEN_HYPER_GET_RR break HYPERPRIVOP_GET_RR
-#define XEN_HYPER_SET_RR break HYPERPRIVOP_SET_RR
-#define XEN_HYPER_SET_KR break HYPERPRIVOP_SET_KR
-#define XEN_HYPER_FC break HYPERPRIVOP_FC
-#define XEN_HYPER_GET_CPUID break HYPERPRIVOP_GET_CPUID
-#define XEN_HYPER_GET_PMD break HYPERPRIVOP_GET_PMD
-#define XEN_HYPER_GET_EFLAG break HYPERPRIVOP_GET_EFLAG
-#define XEN_HYPER_SET_EFLAG break HYPERPRIVOP_SET_EFLAG
-#define XEN_HYPER_GET_PSR break HYPERPRIVOP_GET_PSR
#define XEN_HYPER_SET_RR0_TO_RR4 break HYPERPRIVOP_SET_RR0_TO_RR4
#define XSI_IFS (XSI_BASE + XSI_IFS_OFS)
@@ -70,7 +56,6 @@
#endif
#ifndef __ASSEMBLY__
-#define XEN_HYPER_SSM_I asm("break %0" : : "i"
(HYPERPRIVOP_SSM_I))
#define XEN_HYPER_GET_IVR asm("break %0" : : "i"
(HYPERPRIVOP_GET_IVR))
/************************************************/
@@ -120,22 +105,13 @@ extern void xen_set_eflag(unsigned long); /* see
xen_ia64_setreg */
#define xen_get_virtual_pend() \
(*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1))
-/* Hyperprivops are "break" instructions with a well-defined API.
- * In particular, the virtual psr.ic bit must be off; in this way
- * it is guaranteed to never conflict with a linux break instruction.
- * Normally, this is done in a xen stub but this one is frequent enough
- * that we inline it */
-#define xen_hyper_ssm_i()
\
-({
\
- XEN_HYPER_SSM_I;
\
-})
-
/* Although all privileged operations can be left to trap and will
* be properly handled by Xen, some are frequent enough that we use
* hyperprivops for performance. */
extern unsigned long xen_get_psr(void);
extern unsigned long xen_get_ivr(void);
extern unsigned long xen_get_tpr(void);
+extern void xen_hyper_ssm_i(void);
extern void xen_set_itm(unsigned long);
extern void xen_set_tpr(unsigned long);
extern void xen_eoi(unsigned long);
hypcall.patch
Description: hypcall.patch
_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel
|
Home