LXR linux/arch/ia64/xen/hypercall.S

   1/*
   2 * Support routines for Xen hypercalls
   3 *
   4 * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
   5 * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
   6 */
   7
   8#include <asm/asmmacro.h>
   9#include <asm/intrinsics.h>
  10#include <asm/xen/privop.h>
  11
  12#ifdef __INTEL_COMPILER
  13/*
  14 * Hypercalls without parameter.
  15 */
  16#define __HCALL0(name,hcall)            \
  17        GLOBAL_ENTRY(name);             \
  18        break   hcall;                  \
  19        br.ret.sptk.many rp;            \
  20        END(name)
  21
  22/*
  23 * Hypercalls with 1 parameter.
  24 */
  25#define __HCALL1(name,hcall)            \
  26        GLOBAL_ENTRY(name);             \
  27        mov r8=r32;                     \
  28        break   hcall;                  \
  29        br.ret.sptk.many rp;            \
  30        END(name)
  31
  32/*
  33 * Hypercalls with 2 parameters.
  34 */
  35#define __HCALL2(name,hcall)            \
  36        GLOBAL_ENTRY(name);             \
  37        mov r8=r32;                     \
  38        mov r9=r33;                     \
  39        break   hcall;                  \
  40        br.ret.sptk.many rp;            \
  41        END(name)
  42
  43__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
  44__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
  45__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
  46__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
  47
  48__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
  49__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
  50__HCALL1(xen_thash, HYPERPRIVOP_THASH)
  51__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
  52__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
  53__HCALL1(xen_fc, HYPERPRIVOP_FC)
  54__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
  55__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
  56
  57__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
  58__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
  59__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
  60
  61GLOBAL_ENTRY(xen_set_rr0_to_rr4)
  62        mov r8=r32
  63        mov r9=r33
  64        mov r10=r34
  65        mov r11=r35
  66        mov r14=r36
  67        XEN_HYPER_SET_RR0_TO_RR4
  68        br.ret.sptk.many rp
  69        ;;
  70END(xen_set_rr0_to_rr4)
  71#endif
  72
  73GLOBAL_ENTRY(xen_send_ipi)
  74        mov r14=r32
  75        mov r15=r33
  76        mov r2=0x400
  77        break 0x1000
  78        ;;
  79        br.ret.sptk.many rp
  80        ;;
  81END(xen_send_ipi)
  82
  83GLOBAL_ENTRY(__hypercall)
  84        mov r2=r37
  85        break 0x1000
  86        br.ret.sptk.many b0
  87        ;;
  88END(__hypercall)
  89