80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * CDDL HEADER START
80e2ca8596e3435bc3b76f3c597833ea0a87f85e *
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * The contents of this file are subject to the terms of the
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * Common Development and Distribution License (the "License").
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * You may not use this file except in compliance with the License.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e *
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * or http://www.opensolaris.org/os/licensing.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See the License for the specific language governing permissions
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * and limitations under the License.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e *
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * When distributing Covered Code, include this CDDL HEADER in each
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * If applicable, add the following below this CDDL HEADER, with the
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * fields enclosed by brackets "[]" replaced with your own identifying
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * information: Portions Copyright [yyyy] [name of copyright owner]
80e2ca8596e3435bc3b76f3c597833ea0a87f85e *
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * CDDL HEADER END
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * This is an assembly file that gets #include-ed into the brand-specific
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * assembly files (e.g. sn1_brand_asm.s) for Solaris-derived brands.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * We can't make these into functions since in the trap context there's
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * no easy place to save the extra parameters that would be required, so
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * each brand module needs its own copy of this code. We #include this and
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * use brand-specific #defines to replace the XXX_brand_... definitions.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#ifdef lint
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include <sys/systm.h>
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#else /* !lint */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include <sys/asm_linkage.h>
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include <sys/privregs.h>
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include <sys/segments.h>
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include "assym.h"
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#include "brand_asm.h"
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#endif /* !lint */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#ifdef lint
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85evoid
80e2ca8596e3435bc3b76f3c597833ea0a87f85eXXX_brand_sysenter_callback(void)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e{
80e2ca8596e3435bc3b76f3c597833ea0a87f85e}
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85evoid
80e2ca8596e3435bc3b76f3c597833ea0a87f85eXXX_brand_syscall_callback(void)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e{
80e2ca8596e3435bc3b76f3c597833ea0a87f85e}
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#if defined(__amd64)
80e2ca8596e3435bc3b76f3c597833ea0a87f85evoid
80e2ca8596e3435bc3b76f3c597833ea0a87f85eXXX_brand_syscall32_callback(void)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e{
80e2ca8596e3435bc3b76f3c597833ea0a87f85e}
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#endif /* amd64 */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85evoid
80e2ca8596e3435bc3b76f3c597833ea0a87f85eXXX_brand_int91_callback(void)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e{
80e2ca8596e3435bc3b76f3c597833ea0a87f85e}
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#else /* !lint */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#ifdef _ASM /* The remainder of this file is only for assembly files */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#if defined(__amd64)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * syscall handler for 32-bit user processes:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "64-BIT INTERPOSITION STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler, we just need to place its address
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * into %rcx. The original return address is passed back in SYSCALL_REG.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_syscall32_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(SCR_REG, SPD_HANDLER);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %rcx, SYSCALL_REG; /* save orig return addr in syscall_reg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, %rcx; /* place new return addr in %rcx */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %gs:CPU_RTMP_R15, SCR_REG; /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov V_SSP(SP_REG), SP_REG /* restore user stack pointer */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e jmp nopop_sys_syscall32_swapgs_sysretl
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e retq
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_syscall32_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * syscall handler for 64-bit user processes:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "64-BIT INTERPOSITION STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler, we just need to place its address
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * into %rcx. The original return address is passed back in SYSCALL_REG.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_syscall_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(SCR_REG, SPD_HANDLER);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %rcx, SYSCALL_REG; /* save orig return addr in syscall_reg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, %rcx; /* place new return addr in %rcx */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %gs:CPU_RTMP_R15, SCR_REG; /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov V_SSP(SP_REG), SP_REG /* restore user stack pointer */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e jmp nopop_sys_syscall_swapgs_sysretq
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e retq
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_syscall_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "64-BIT INTERPOSITION STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler, we just need to place its address
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * into %rdx. The original return address is passed back in SYSCALL_REG.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_sysenter_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(SCR_REG, SPD_HANDLER);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %rdx, SYSCALL_REG; /* save orig return addr in syscall_reg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, %rdx; /* place new return addr in %rdx */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %gs:CPU_RTMP_R15, SCR_REG; /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov V_SSP(SP_REG), SP_REG /* restore user stack pointer */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e jmp sys_sysenter_swapgs_sysexit
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e ret
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_sysenter_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler we need to update the user's %eip
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * pointer in the saved interrupt state on the stack. The interrupt state was
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * pushed onto our stack automatically when the interrupt occured; see the
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * comments above. The original return address is passed back in SYSCALL_REG.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "64-BIT INTERPOSITION STACK" and "64-BIT INT STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_int91_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(SCR_REG, SPD_HANDLER); /* new ret addr is in scratch */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, SYSCALL_REG; /* place new ret addr in syscallreg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %gs:CPU_RTMP_R15, SCR_REG; /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov V_SSP(SP_REG), SP_REG; /* restore intr stack pointer */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e /*CSTYLED*/
80e2ca8596e3435bc3b76f3c597833ea0a87f85e xchg (SP_REG), SYSCALL_REG /* swap new and orig. return addrs */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e jmp sys_sysint_swapgs_iret
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e retq
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_int91_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#else /* !__amd64 */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler, we need to replace the iret target
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * address. The original return address is passed back in %eax.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "32-BIT INTERPOSITION STACK" and "32-BIT INT STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_syscall_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(SCR_REG, SPD_HANDLER); /* new ret addr is in scratch */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, SYSCALL_REG; /* place new ret addr in syscallreg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e GET_V(SP_REG, 0, V_U_EBX, SCR_REG); /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e add $V_END, SP_REG; /* restore intr stack pointer */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e /*CSTYLED*/
80e2ca8596e3435bc3b76f3c597833ea0a87f85e xchg (SP_REG), SYSCALL_REG /* swap new and orig. return addrs */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e jmp nopop_sys_rtt_syscall
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e ret
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_syscall_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e/*
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * To 'return' to our user-space handler, we just need to place its address
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * into %edx. The original return address is passed back in SYSCALL_REG.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e * See "32-BIT INTERPOSITION STACK" in brand_asm.h.
80e2ca8596e3435bc3b76f3c597833ea0a87f85e */
80e2ca8596e3435bc3b76f3c597833ea0a87f85eENTRY(XXX_brand_sysenter_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALLBACK_PROLOGUE(XXX_emulation_table, SPD_HANDLER, SYSCALL_REG,
80e2ca8596e3435bc3b76f3c597833ea0a87f85e SCR_REG, SCR_REGB);
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov %edx, SCR_REG; /* save orig return addr in scr reg */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e CALC_TABLE_ADDR(%edx, SPD_HANDLER); /* new return addr is in %edx */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e mov SCR_REG, SYSCALL_REG; /* save orig return addr in %eax */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e GET_V(SP_REG, 0, V_U_EBX, SCR_REG) /* restore scratch register */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e sysexit
80e2ca8596e3435bc3b76f3c597833ea0a87f85e9:
80e2ca8596e3435bc3b76f3c597833ea0a87f85e ret
80e2ca8596e3435bc3b76f3c597833ea0a87f85eSET_SIZE(XXX_brand_sysenter_callback)
80e2ca8596e3435bc3b76f3c597833ea0a87f85e
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#endif /* !__amd64 */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#endif /* _ASM */
80e2ca8596e3435bc3b76f3c597833ea0a87f85e#endif /* !lint */