/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * Hypervisor calls
 */

#include <sys/asm_linkage.h>
#include <sys/machasi.h>
#include <sys/machparam.h>
#include <sys/hypervisor_api.h>

        /*
         * int hv_mach_exit(uint64_t exit_code)
         */
        ENTRY(hv_mach_exit)
        mov     HV_MACH_EXIT, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_mach_exit)

        /*
         * uint64_t hv_mach_sir(void)
         */
        ENTRY(hv_mach_sir)
        mov     HV_MACH_SIR, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_mach_sir)

        /*
         * hv_cpu_start(uint64_t cpuid, uint64_t pc, ui64_t rtba,
         *     uint64_t arg)
         */
        ENTRY(hv_cpu_start)
        mov     HV_CPU_START, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_cpu_start)

        /*
         * hv_cpu_stop(uint64_t cpuid)
         */
        ENTRY(hv_cpu_stop)
        mov     HV_CPU_STOP, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_cpu_stop)

        /*
         * hv_cpu_set_rtba(uint64_t *rtba)
         */
        ENTRY(hv_cpu_set_rtba)
        mov     %o0, %o2
        ldx     [%o2], %o0
        mov     HV_CPU_SET_RTBA, %o5
        ta      FAST_TRAP
        stx     %o1, [%o2]
        retl
          nop
        SET_SIZE(hv_cpu_set_rtba)

        /*
         * int64_t hv_cnputchar(uint8_t ch)
         */
        ENTRY(hv_cnputchar)
        mov     CONS_PUTCHAR, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_cnputchar)

        /*
         * int64_t hv_cngetchar(uint8_t *ch)
         */
        ENTRY(hv_cngetchar)
        mov     %o0, %o2
        mov     CONS_GETCHAR, %o5
        ta      FAST_TRAP
        brnz,a  %o0, 1f         ! failure, just return error
          nop

        cmp     %o1, H_BREAK
        be      1f
        mov     %o1, %o0

        cmp     %o1, H_HUP
        be      1f
        mov     %o1, %o0

        stb     %o1, [%o2]      ! success, save character and return 0
        mov     0, %o0
1:
        retl
          nop
        SET_SIZE(hv_cngetchar)

        ENTRY(hv_tod_get)
        mov     %o0, %o4
        mov     TOD_GET, %o5
        ta      FAST_TRAP
        retl
          stx   %o1, [%o4]
        SET_SIZE(hv_tod_get)

        ENTRY(hv_tod_set)
        mov     TOD_SET, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_tod_set)

        /*
         * Map permanent address
         * arg0 vaddr (%o0)
         * arg1 context (%o1)
         * arg2 tte (%o2)
         * arg3 flags (%o3)  0x1=d 0x2=i
         */
        ENTRY(hv_mmu_map_perm_addr)
        mov     MAP_PERM_ADDR, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_mmu_map_perm_addr)

        /*
         * hv_mmu_fault_area_conf(void *raddr)
         */
        ENTRY(hv_mmu_fault_area_conf)
        mov     %o0, %o2
        ldx     [%o2], %o0
        mov     MMU_SET_INFOPTR, %o5
        ta      FAST_TRAP
        stx     %o1, [%o2]
        retl
          nop
        SET_SIZE(hv_mmu_fault_area_conf)

        /*
         * Unmap permanent address
         * arg0 vaddr (%o0)
         * arg1 context (%o1)
         * arg2 flags (%o2)  0x1=d 0x2=i
         */
        ENTRY(hv_mmu_unmap_perm_addr)
        mov     UNMAP_PERM_ADDR, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_mmu_unmap_perm_addr)

        /*
         * Set TSB for context 0
         * arg0 ntsb_descriptor (%o0)
         * arg1 desc_ra (%o1)
         */
        ENTRY(hv_set_ctx0)
        mov     MMU_TSB_CTX0, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_set_ctx0)

        /*
         * Set TSB for context non0
         * arg0 ntsb_descriptor (%o0)
         * arg1 desc_ra (%o1)
         */
        ENTRY(hv_set_ctxnon0)
        mov     MMU_TSB_CTXNON0, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_set_ctxnon0)

#ifdef SET_MMU_STATS
        /*
         * Returns old stat area on success
         */
        ENTRY(hv_mmu_set_stat_area)
        mov     MMU_STAT_AREA, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_mmu_set_stat_area)
#endif /* SET_MMU_STATS */

        /*
         * CPU Q Configure
         * arg0 queue (%o0)
         * arg1 Base address RA (%o1)
         * arg2 Size (%o2)
         */
        ENTRY(hv_cpu_qconf)
        mov     HV_CPU_QCONF, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_cpu_qconf)

        /*
         * arg0 - devhandle
         * arg1 - devino
         *
         * ret0 - status
         * ret1 - sysino
         */
        ENTRY(hvio_intr_devino_to_sysino)
        mov     HVIO_INTR_DEVINO2SYSINO, %o5
        ta      FAST_TRAP
        brz,a   %o0, 1f
        stx     %o1, [%o2]
1:      retl
        nop
        SET_SIZE(hvio_intr_devino_to_sysino)

        /*
         * arg0 - sysino
         *
         * ret0 - status
         * ret1 - intr_valid_state
         */
        ENTRY(hvio_intr_getvalid)
        mov     %o1, %o2
        mov     HVIO_INTR_GETVALID, %o5
        ta      FAST_TRAP
        brz,a   %o0, 1f
        stuw    %o1, [%o2]
1:      retl
        nop
        SET_SIZE(hvio_intr_getvalid)

        /*
         * arg0 - sysino
         * arg1 - intr_valid_state
         *
         * ret0 - status
         */
        ENTRY(hvio_intr_setvalid)
        mov     HVIO_INTR_SETVALID, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hvio_intr_setvalid)

        /*
         * arg0 - sysino
         *
         * ret0 - status
         * ret1 - intr_state
         */
        ENTRY(hvio_intr_getstate)
        mov     %o1, %o2
        mov     HVIO_INTR_GETSTATE, %o5
        ta      FAST_TRAP
        brz,a   %o0, 1f
        stuw    %o1, [%o2]
1:      retl
        nop
        SET_SIZE(hvio_intr_getstate)

        /*
         * arg0 - sysino
         * arg1 - intr_state
         *
         * ret0 - status
         */
        ENTRY(hvio_intr_setstate)
        mov     HVIO_INTR_SETSTATE, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hvio_intr_setstate)

        /*
         * arg0 - sysino
         *
         * ret0 - status
         * ret1 - cpu_id
         */
        ENTRY(hvio_intr_gettarget)
        mov     %o1, %o2
        mov     HVIO_INTR_GETTARGET, %o5
        ta      FAST_TRAP
        brz,a   %o0, 1f
        stuw    %o1, [%o2]
1:      retl
        nop
        SET_SIZE(hvio_intr_gettarget)

        /*
         * arg0 - sysino
         * arg1 - cpu_id
         *
         * ret0 - status
         */
        ENTRY(hvio_intr_settarget)
        mov     HVIO_INTR_SETTARGET, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hvio_intr_settarget)

        /*
         * hv_cpu_yield(void)
         */
        ENTRY(hv_cpu_yield)
        mov     HV_CPU_YIELD, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_cpu_yield)

        /*
         * int hv_cpu_state(uint64_t cpuid, uint64_t *cpu_state);
         */
        ENTRY(hv_cpu_state)
        mov     %o1, %o4                        ! save datap
        mov     HV_CPU_STATE, %o5
        ta      FAST_TRAP
        brz,a   %o0, 1f
        stx     %o1, [%o4]
1:
        retl
        nop
        SET_SIZE(hv_cpu_state)

        /*
         * HV state dump zone Configure
         * arg0 real adrs of dump buffer (%o0)
         * arg1 size of dump buffer (%o1)
         * ret0 status (%o0)
         * ret1 size of buffer on success and min size on EINVAL (%o1)
         * hv_dump_buf_update(uint64_t paddr, uint64_t size, uint64_t *ret_size)
         */
        ENTRY(hv_dump_buf_update)
        mov     DUMP_BUF_UPDATE, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_dump_buf_update)

        /*
         * arg0 - timeout value (%o0)
         *
         * ret0 - status (%o0)
         * ret1 - time_remaining (%o1)
         * hv_mach_set_watchdog(uint64_t timeout, uint64_t *time_remaining)
         */
        ENTRY(hv_mach_set_watchdog)
        mov     %o1, %o2
        mov     MACH_SET_WATCHDOG, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_mach_set_watchdog)

        /*
         * For memory scrub
         * int hv_mem_scrub(uint64_t real_addr, uint64_t length,
         *      uint64_t *scrubbed_len);
         * Retun %o0 -- status
         *       %o1 -- bytes scrubbed
         */
        ENTRY(hv_mem_scrub)
        mov     %o2, %o4
        mov     HV_MEM_SCRUB, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o4]
        SET_SIZE(hv_mem_scrub)

        /*
         * Flush ecache
         * int hv_mem_sync(uint64_t real_addr, uint64_t length,
         *      uint64_t *flushed_len);
         * Retun %o0 -- status
         *       %o1 -- bytes flushed
         */
        ENTRY(hv_mem_sync)
        mov     %o2, %o4
        mov     HV_MEM_SYNC, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o4]
        SET_SIZE(hv_mem_sync)

        /*
         * uint64_t hv_tm_enable(uint64_t enable)
         */
        ENTRY(hv_tm_enable)
        mov     HV_TM_ENABLE, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_tm_enable)

        /*
         * TTRACE_BUF_CONF Configure
         * arg0 RA base of buffer (%o0)
         * arg1 buf size in no. of entries (%o1)
         * ret0 status (%o0)
         * ret1 minimum size in no. of entries on failure,
         * actual size in no. of entries on success (%o1)
         */
        ENTRY(hv_ttrace_buf_conf)
        mov     TTRACE_BUF_CONF, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_ttrace_buf_conf)

         /*
         * TTRACE_BUF_INFO
         * ret0 status (%o0)
         * ret1 RA base of buffer (%o1)
         * ret2 size in no. of entries (%o2)
         */
        ENTRY(hv_ttrace_buf_info)
        mov     %o0, %o3
        mov     %o1, %o4
        mov     TTRACE_BUF_INFO, %o5
        ta      FAST_TRAP
        stx     %o1, [%o3]
        retl
        stx     %o2, [%o4]
        SET_SIZE(hv_ttrace_buf_info)

        /*
         * TTRACE_ENABLE
         * arg0 enable/ disable (%o0)
         * ret0 status (%o0)
         * ret1 previous enable state (%o1)
         */
        ENTRY(hv_ttrace_enable)
        mov     %o1, %o2
        mov     TTRACE_ENABLE, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_ttrace_enable)

        /*
         * TTRACE_FREEZE
         * arg0 enable/ freeze (%o0)
         * ret0 status (%o0)
         * ret1 previous freeze state (%o1)
         */
        ENTRY(hv_ttrace_freeze)
        mov     %o1, %o2
        mov     TTRACE_FREEZE, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_ttrace_freeze)

        /*
         * MACH_DESC
         * arg0 buffer real address
         * arg1 pointer to uint64_t for size of buffer
         * ret0 status
         * ret1 return required size of buffer / returned data size
         */
        ENTRY(hv_mach_desc)
        mov     %o1, %o4                ! save datap
        ldx     [%o1], %o1
        mov     HV_MACH_DESC, %o5
        ta      FAST_TRAP
        retl
        stx   %o1, [%o4]
        SET_SIZE(hv_mach_desc)

        /*
         * hv_ra2pa(uint64_t ra)
         *
         * MACH_DESC
         * arg0 Real address to convert
         * ret0 Returned physical address or -1 on error
         */
        ENTRY(hv_ra2pa)
        mov     HV_RA2PA, %o5
        ta      FAST_TRAP
        cmp     %o0, 0
        move    %xcc, %o1, %o0
        movne   %xcc, -1, %o0
        retl
        nop
        SET_SIZE(hv_ra2pa)

        /*
         * hv_hpriv(void *func, uint64_t arg1, uint64_t arg2, uint64_t arg3)
         *
         * MACH_DESC
         * arg0 OS function to call
         * arg1 First arg to OS function
         * arg2 Second arg to OS function
         * arg3 Third arg to OS function
         * ret0 Returned value from function
         */

        ENTRY(hv_hpriv)
        mov     HV_HPRIV, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_hpriv)

        /*
         * hv_ldc_tx_qconf(uint64_t channel, uint64_t ra_base,
         *      uint64_t nentries);
         */
        ENTRY(hv_ldc_tx_qconf)
        mov     LDC_TX_QCONF, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_ldc_tx_qconf)


        /*
         * hv_ldc_tx_qinfo(uint64_t channel, uint64_t *ra_base,
         *      uint64_t *nentries);
         */
        ENTRY(hv_ldc_tx_qinfo)
        mov     %o1, %g1
        mov     %o2, %g2
        mov     LDC_TX_QINFO, %o5
        ta      FAST_TRAP
        stx     %o1, [%g1]
        retl
          stx   %o2, [%g2]
        SET_SIZE(hv_ldc_tx_qinfo)


        /*
         * hv_ldc_tx_get_state(uint64_t channel,
         *      uint64_t *headp, uint64_t *tailp, uint64_t *state);
         */
        ENTRY(hv_ldc_tx_get_state)
        mov     LDC_TX_GET_STATE, %o5
        mov     %o1, %g1
        mov     %o2, %g2
        mov     %o3, %g3
        ta      FAST_TRAP
        stx     %o1, [%g1]
        stx     %o2, [%g2]
        retl
          stx   %o3, [%g3]
        SET_SIZE(hv_ldc_tx_get_state)


        /*
         * hv_ldc_tx_set_qtail(uint64_t channel, uint64_t tail)
         */
        ENTRY(hv_ldc_tx_set_qtail)
        mov     LDC_TX_SET_QTAIL, %o5
        ta      FAST_TRAP
        retl
        SET_SIZE(hv_ldc_tx_set_qtail)


        /*
         * hv_ldc_rx_qconf(uint64_t channel, uint64_t ra_base,
         *      uint64_t nentries);
         */
        ENTRY(hv_ldc_rx_qconf)
        mov     LDC_RX_QCONF, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_ldc_rx_qconf)


        /*
         * hv_ldc_rx_qinfo(uint64_t channel, uint64_t *ra_base,
         *      uint64_t *nentries);
         */
        ENTRY(hv_ldc_rx_qinfo)
        mov     %o1, %g1
        mov     %o2, %g2
        mov     LDC_RX_QINFO, %o5
        ta      FAST_TRAP
        stx     %o1, [%g1]
        retl
          stx   %o2, [%g2]
        SET_SIZE(hv_ldc_rx_qinfo)


        /*
         * hv_ldc_rx_get_state(uint64_t channel,
         *      uint64_t *headp, uint64_t *tailp, uint64_t *state);
         */
        ENTRY(hv_ldc_rx_get_state)
        mov     LDC_RX_GET_STATE, %o5
        mov     %o1, %g1
        mov     %o2, %g2
        mov     %o3, %g3
        ta      FAST_TRAP
        stx     %o1, [%g1]
        stx     %o2, [%g2]
        retl
          stx   %o3, [%g3]
        SET_SIZE(hv_ldc_rx_get_state)


        /*
         * hv_ldc_rx_set_qhead(uint64_t channel, uint64_t head)
         */
        ENTRY(hv_ldc_rx_set_qhead)
        mov     LDC_RX_SET_QHEAD, %o5
        ta      FAST_TRAP
        retl
        SET_SIZE(hv_ldc_rx_set_qhead)

        /*
         * hv_ldc_set_map_table(uint64_t channel, uint64_t tbl_ra,
         *              uint64_t tbl_entries)
         */
        ENTRY(hv_ldc_set_map_table)
        mov     LDC_SET_MAP_TABLE, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_ldc_set_map_table)


        /*
         * hv_ldc_get_map_table(uint64_t channel, uint64_t *tbl_ra,
         *              uint64_t *tbl_entries)
         */
        ENTRY(hv_ldc_get_map_table)
        mov     %o1, %g1
        mov     %o2, %g2
        mov     LDC_GET_MAP_TABLE, %o5
        ta      FAST_TRAP
        stx     %o1, [%g1]
        retl
          stx     %o2, [%g2]
        SET_SIZE(hv_ldc_get_map_table)


        /*
         * hv_ldc_copy(uint64_t channel, uint64_t request, uint64_t cookie,
         *              uint64_t raddr, uint64_t length, uint64_t *lengthp);
         */
        ENTRY(hv_ldc_copy)
        mov     %o5, %g1
        mov     LDC_COPY, %o5
        ta      FAST_TRAP
        retl
          stx   %o1, [%g1]
        SET_SIZE(hv_ldc_copy)


        /*
         * hv_ldc_mapin(uint64_t channel, uint64_t cookie, uint64_t *raddr,
         *              uint64_t *perm)
         */
        ENTRY(hv_ldc_mapin)
        mov     %o2, %g1
        mov     %o3, %g2
        mov     LDC_MAPIN, %o5
        ta      FAST_TRAP
        stx     %o1, [%g1]
        retl
          stx     %o2, [%g2]
        SET_SIZE(hv_ldc_mapin)


        /*
         * hv_ldc_unmap(uint64_t raddr)
         */
        ENTRY(hv_ldc_unmap)
        mov     LDC_UNMAP, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_ldc_unmap)


        /*
         * hv_ldc_revoke(uint64_t channel, uint64_t cookie,
         *               uint64_t revoke_cookie
         */
        ENTRY(hv_ldc_revoke)
        mov     LDC_REVOKE, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hv_ldc_revoke)

        /*
         * hv_ldc_mapin_size_max(uint64_t tbl_type, uint64_t *sz)
         */
        ENTRY(hv_ldc_mapin_size_max)
        mov     %o1, %g1
        mov     LDC_MAPIN_SIZE_MAX, %o5
        ta      FAST_TRAP
        retl
          stx     %o1, [%g1]
        SET_SIZE(hv_ldc_mapin_size_max)

        /*
         * hvldc_intr_getcookie(uint64_t dev_hdl, uint32_t devino,
         *                      uint64_t *cookie);
         */
        ENTRY(hvldc_intr_getcookie)
        mov     %o2, %g1
        mov     VINTR_GET_COOKIE, %o5
        ta      FAST_TRAP
        retl
          stx   %o1, [%g1]
        SET_SIZE(hvldc_intr_getcookie)

        /*
         * hvldc_intr_setcookie(uint64_t dev_hdl, uint32_t devino,
         *                      uint64_t cookie);
         */
        ENTRY(hvldc_intr_setcookie)
        mov     VINTR_SET_COOKIE, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hvldc_intr_setcookie)


        /*
         * hvldc_intr_getvalid(uint64_t dev_hdl, uint32_t devino,
         *                      int *intr_valid_state);
         */
        ENTRY(hvldc_intr_getvalid)
        mov     %o2, %g1
        mov     VINTR_GET_VALID, %o5
        ta      FAST_TRAP
        retl
          stuw   %o1, [%g1]
        SET_SIZE(hvldc_intr_getvalid)

        /*
         * hvldc_intr_setvalid(uint64_t dev_hdl, uint32_t devino,
         *                      int intr_valid_state);
         */
        ENTRY(hvldc_intr_setvalid)
        mov     VINTR_SET_VALID, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hvldc_intr_setvalid)

        /*
         * hvldc_intr_getstate(uint64_t dev_hdl, uint32_t devino,
         *                      int *intr_state);
         */
        ENTRY(hvldc_intr_getstate)
        mov     %o2, %g1
        mov     VINTR_GET_STATE, %o5
        ta      FAST_TRAP
        retl
          stuw   %o1, [%g1]
        SET_SIZE(hvldc_intr_getstate)

        /*
         * hvldc_intr_setstate(uint64_t dev_hdl, uint32_t devino,
         *                      int intr_state);
         */
        ENTRY(hvldc_intr_setstate)
        mov     VINTR_SET_STATE, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hvldc_intr_setstate)

        /*
         * hvldc_intr_gettarget(uint64_t dev_hdl, uint32_t devino,
         *                      uint32_t *cpuid);
         */
        ENTRY(hvldc_intr_gettarget)
        mov     %o2, %g1
        mov     VINTR_GET_TARGET, %o5
        ta      FAST_TRAP
        retl
          stuw   %o1, [%g1]
        SET_SIZE(hvldc_intr_gettarget)

        /*
         * hvldc_intr_settarget(uint64_t dev_hdl, uint32_t devino,
         *                      uint32_t cpuid);
         */
        ENTRY(hvldc_intr_settarget)
        mov     VINTR_SET_TARGET, %o5
        ta      FAST_TRAP
        retl
          nop
        SET_SIZE(hvldc_intr_settarget)

        /*
         * hv_api_get_version(uint64_t api_group, uint64_t *majorp,
         *                      uint64_t *minorp)
         *
         * API_GET_VERSION
         * arg0 API group
         * ret0 status
         * ret1 major number
         * ret2 minor number
         */
        ENTRY(hv_api_get_version)
        mov     %o1, %o3
        mov     %o2, %o4
        mov     API_GET_VERSION, %o5
        ta      CORE_TRAP
        stx     %o1, [%o3]
        retl
          stx   %o2, [%o4]
        SET_SIZE(hv_api_get_version)

        /*
         * hv_api_set_version(uint64_t api_group, uint64_t major,
         *                      uint64_t minor, uint64_t *supported_minor)
         *
         * API_SET_VERSION
         * arg0 API group
         * arg1 major number
         * arg2 requested minor number
         * ret0 status
         * ret1 actual minor number
         */
        ENTRY(hv_api_set_version)
        mov     %o3, %o4
        mov     API_SET_VERSION, %o5
        ta      CORE_TRAP
        retl
          stx   %o1, [%o4]
        SET_SIZE(hv_api_set_version)

        /*
         * %o0 - buffer real address
         * %o1 - buffer size
         * %o2 - &characters written
         * returns
         *      status
         */
        ENTRY(hv_cnwrite)
        mov     CONS_WRITE, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_cnwrite)

        /*
         * %o0 character buffer ra
         * %o1 buffer size
         * %o2 pointer to returned size
         * return values:
         * 0 success
         * hv_errno failure
         */
        ENTRY(hv_cnread)
        mov     CONS_READ, %o5
        ta      FAST_TRAP
        brnz,a  %o0, 1f         ! failure, just return error
        nop

        cmp     %o1, H_BREAK
        be      1f
        mov     %o1, %o0

        cmp     %o1, H_HUP
        be      1f
        mov     %o1, %o0

        stx     %o1, [%o2]      ! success, save count and return 0
        mov     0, %o0
1:
        retl
        nop
        SET_SIZE(hv_cnread)

        /*
         * SOFT_STATE_SET
         * arg0 state (%o0)
         * arg1 string (%o1)
         * ret0 status (%o0)
         */
        ENTRY(hv_soft_state_set)
        mov     SOFT_STATE_SET, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_soft_state_set)

        /*
         * SOFT_STATE_GET
         * arg0 string buffer (%o0)
         * ret0 status (%o0)
         * ret1 current state (%o1)
         */
        ENTRY(hv_soft_state_get)
        mov     %o1, %o2
        mov     SOFT_STATE_GET, %o5
        ta      FAST_TRAP
        retl
        stx     %o1, [%o2]
        SET_SIZE(hv_soft_state_get)

        ENTRY(hv_guest_suspend)
        mov     GUEST_SUSPEND, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_guest_suspend)

        ENTRY(hv_tick_set_npt)
        mov     TICK_SET_NPT, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_tick_set_npt)

        ENTRY(hv_stick_set_npt)
        mov     STICK_SET_NPT, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_stick_set_npt)

        /*
         * REBOOT_DATA_SET
         * arg0 buffer real address
         * arg1 buffer length
         * ret0 status
         */
        ENTRY(hv_reboot_data_set)
        mov     HV_REBOOT_DATA_SET, %o5
        ta      FAST_TRAP
        retl
        nop
        SET_SIZE(hv_reboot_data_set)