X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..0c530ab8987f0ae6a1a3d9284f40182b88852816:/osfmk/mach/i386/thread_status.h diff --git a/osfmk/mach/i386/thread_status.h b/osfmk/mach/i386/thread_status.h index 7ac40ba6d..499d0cb48 100644 --- a/osfmk/mach/i386/thread_status.h +++ b/osfmk/mach/i386/thread_status.h @@ -1,29 +1,23 @@ /* * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. * - * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * @APPLE_LICENSE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the License - * may not be used to create, or enable the creation or redistribution of, - * unlawful or unlicensed copies of an Apple operating system, or to - * circumvent, violate, or enable the circumvention or violation of, any - * terms of an Apple operating system software license agreement. + * The contents of this file constitute Original Code as defined in and + * are subject to the Apple Public Source License Version 1.1 (the + * "License"). You may not use this file except in compliance with the + * License. Please obtain a copy of the License at + * http://www.apple.com/publicsource and read it before using this file. * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * This Original Code and all software distributed under the License are + * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * - * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -70,39 +64,34 @@ #include #include #include -#include /* FIXME */ -#include /* FIXME */ +#include + + + /* - * i386_thread_state this is the structure that is exported - * to user threads for use in status/mutate - * calls. This structure should never - * change. - * - * i386_float_state exported to use threads for access to - * floating point registers. Try not to - * change this one, either. - * - * i386_isa_port_map_state exported to user threads to allow - * selective in/out operations + * the i386_xxxx form is kept for legacy purposes since these types + * are externally known... eventually they should be deprecated. + * our internal implementation has moved to the following naming convention * - * i386_v86_assist_state - * - * thread_syscall_state + * x86_xxxx32 names are used to deal with 32 bit states + * x86_xxxx64 names are used to deal with 64 bit states + * x86_xxxx names are used to deal with either 32 or 64 bit states + * via a self-describing mechanism */ -/* THREAD_STATE_FLAVOR_LIST 0 */ -#define i386_NEW_THREAD_STATE 1 /* used to be i386_THREAD_STATE */ -#define i386_FLOAT_STATE 2 -#define i386_ISA_PORT_MAP_STATE 3 -#define i386_V86_ASSIST_STATE 4 -#define i386_REGS_SEGS_STATE 5 -#define THREAD_SYSCALL_STATE 6 -#define THREAD_STATE_NONE 7 -#define i386_SAVED_STATE 8 /* - * x86-64 compatibility + * these are the legacy names which should be deprecated in the future + * they are externally known which is the only reason we don't just get + * rid of them + */ +#define i386_THREAD_STATE 1 +#define i386_FLOAT_STATE 2 +#define i386_EXCEPTION_STATE 3 + + +/* * THREAD_STATE_FLAVOR_LIST 0 * these are the supported flavors */ @@ -118,284 +107,46 @@ #define x86_DEBUG_STATE32 10 #define x86_DEBUG_STATE64 11 #define x86_DEBUG_STATE 12 +#define THREAD_STATE_NONE 13 -/* - * VALID_THREAD_STATE_FLAVOR is a platform specific macro that when passed - * an exception flavor will return if that is a defined flavor for that - * platform. The macro must be manually updated to include all of the valid - * exception flavors as defined above. - */ -#define VALID_THREAD_STATE_FLAVOR(x) \ - ((x == i386_NEW_THREAD_STATE) || \ - (x == i386_FLOAT_STATE) || \ - (x == i386_ISA_PORT_MAP_STATE) || \ - (x == i386_V86_ASSIST_STATE) || \ - (x == i386_REGS_SEGS_STATE) || \ - (x == THREAD_SYSCALL_STATE) || \ - (x == THREAD_STATE_NONE) || \ - (x == i386_SAVED_STATE)) - - -/* - * x86-64 compatibility - */ -struct x86_state_hdr { - int flavor; - int count; -}; -typedef struct x86_state_hdr x86_state_hdr_t; - - -/* - * This structure is used for both - * i386_THREAD_STATE and i386_REGS_SEGS_STATE. - */ -struct i386_new_thread_state { - unsigned int gs; - unsigned int fs; - unsigned int es; - unsigned int ds; - unsigned int edi; - unsigned int esi; - unsigned int ebp; - unsigned int esp; - unsigned int ebx; - unsigned int edx; - unsigned int ecx; - unsigned int eax; - unsigned int eip; - unsigned int cs; - unsigned int efl; - unsigned int uesp; - unsigned int ss; -}; -#define i386_NEW_THREAD_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof (struct i386_new_thread_state)/sizeof(unsigned int))) - -/* - * Subset of saved state stored by processor on kernel-to-kernel - * trap. (Used by ddb to examine state guaranteed to be present - * on all traps into debugger.) - */ -struct i386_saved_state_from_kernel { - unsigned int gs; - unsigned int fs; - unsigned int es; - unsigned int ds; - unsigned int edi; - unsigned int esi; - unsigned int ebp; - unsigned int esp; /* kernel esp stored by pusha - - we save cr2 here later */ - unsigned int ebx; - unsigned int edx; - unsigned int ecx; - unsigned int eax; - unsigned int trapno; - unsigned int err; - unsigned int eip; - unsigned int cs; - unsigned int efl; -}; - -/* - * The format in which thread state is saved by Mach on this machine. This - * state flavor is most efficient for exception RPC's to kernel-loaded - * servers, because copying can be avoided: - */ -struct i386_saved_state { - unsigned int gs; - unsigned int fs; - unsigned int es; - unsigned int ds; - unsigned int edi; - unsigned int esi; - unsigned int ebp; - unsigned int esp; /* kernel esp stored by pusha - - we save cr2 here later */ - unsigned int ebx; - unsigned int edx; - unsigned int ecx; - unsigned int eax; - unsigned int trapno; - unsigned int err; - unsigned int eip; - unsigned int cs; - unsigned int efl; - unsigned int uesp; - unsigned int ss; - struct v86_segs { - unsigned int v86_es; /* virtual 8086 segment registers */ - unsigned int v86_ds; - unsigned int v86_fs; - unsigned int v86_gs; - } v86_segs; -#define i386_SAVED_ARGV_COUNT 7 - unsigned int argv_status; /* Boolean flag indicating whether or - * not Mach copied in the args */ - unsigned int argv[i386_SAVED_ARGV_COUNT]; - /* The return address, and the first several - * function call args from the stack, for - * efficient syscall exceptions */ -}; -#define i386_SAVED_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof (struct i386_saved_state)/sizeof(unsigned int))) -#define i386_REGS_SEGS_STATE_COUNT i386_SAVED_STATE_COUNT - -/* - * Machine-independent way for servers and Mach's exception mechanism to - * choose the most efficient state flavor for exception RPC's: - */ -#define MACHINE_THREAD_STATE i386_SAVED_STATE -#define MACHINE_THREAD_STATE_COUNT 144 - /* * Largest state on this machine: * (be sure mach/machine/thread_state.h matches!) */ #define THREAD_MACHINE_STATE_MAX THREAD_STATE_MAX -/* - * Floating point state. - * - * fpkind tells in what way floating point operations are supported. - * See the values for fp_kind in . - * - * If the kind is FP_NO, then calls to set the state will fail, and - * thread_getstatus will return garbage for the rest of the state. - * If "initialized" is false, then the rest of the state is garbage. - * Clients can set "initialized" to false to force the coprocessor to - * be reset. - * "exc_status" is non-zero if the thread has noticed (but not - * proceeded from) a coprocessor exception. It contains the status - * word with the exception bits set. The status word in "fp_status" - * will have the exception bits turned off. If an exception bit in - * "fp_status" is turned on, then "exc_status" should be zero. This - * happens when the coprocessor exception is noticed after the system - * has context switched to some other thread. - * - * If kind is FP_387, then "state" is a i387_state. Other kinds might - * also use i387_state, but somebody will have to verify it (XXX). - * Note that the registers are ordered from top-of-stack down, not - * according to physical register number. - */ - -/* - * x86-64 compatibility - */ -/* defn of 80bit x87 FPU or MMX register */ -struct mmst_reg { - char mmst_reg[10]; - char mmst_rsrv[6]; -}; - - -/* defn of 128 bit XMM regs */ -struct xmm_reg { - char xmm_reg[16]; -}; - -#define FP_STATE_BYTES 512 - -struct i386_float_state { - int fpkind; /* FP_NO..FP_387 (readonly) */ - int initialized; - unsigned char hw_state[FP_STATE_BYTES]; /* actual "hardware" state */ - int exc_status; /* exception status (readonly) */ -}; -#define i386_FLOAT_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof(struct i386_float_state)/sizeof(unsigned int))) - -/* - * x86-64 compatibility - */ -typedef struct { - int fpu_reserved[2]; - fp_control_t fpu_fcw; /* x87 FPU control word */ - fp_status_t fpu_fsw; /* x87 FPU status word */ - uint8_t fpu_ftw; /* x87 FPU tag word */ - uint8_t fpu_rsrv1; /* reserved */ - uint16_t fpu_fop; /* x87 FPU Opcode */ - uint32_t fpu_ip; /* x87 FPU Instruction Pointer offset */ - uint16_t fpu_cs; /* x87 FPU Instruction Pointer Selector */ - uint16_t fpu_rsrv2; /* reserved */ - uint32_t fpu_dp; /* x87 FPU Instruction Operand(Data) Pointer offset */ - uint16_t fpu_ds; /* x87 FPU Instruction Operand(Data) Pointer Selector */ - uint16_t fpu_rsrv3; /* reserved */ - uint32_t fpu_mxcsr; /* MXCSR Register state */ - uint32_t fpu_mxcsrmask; /* MXCSR mask */ - struct mmst_reg fpu_stmm0; /* ST0/MM0 */ - struct mmst_reg fpu_stmm1; /* ST1/MM1 */ - struct mmst_reg fpu_stmm2; /* ST2/MM2 */ - struct mmst_reg fpu_stmm3; /* ST3/MM3 */ - struct mmst_reg fpu_stmm4; /* ST4/MM4 */ - struct mmst_reg fpu_stmm5; /* ST5/MM5 */ - struct mmst_reg fpu_stmm6; /* ST6/MM6 */ - struct mmst_reg fpu_stmm7; /* ST7/MM7 */ - struct xmm_reg fpu_xmm0; /* XMM 0 */ - struct xmm_reg fpu_xmm1; /* XMM 1 */ - struct xmm_reg fpu_xmm2; /* XMM 2 */ - struct xmm_reg fpu_xmm3; /* XMM 3 */ - struct xmm_reg fpu_xmm4; /* XMM 4 */ - struct xmm_reg fpu_xmm5; /* XMM 5 */ - struct xmm_reg fpu_xmm6; /* XMM 6 */ - struct xmm_reg fpu_xmm7; /* XMM 7 */ - char fpu_rsrv4[14*16]; /* reserved */ - int fpu_reserved1; -} i386_float_state_t; - - -#define FP_old_STATE_BYTES ((mach_msg_type_number_t) \ - (sizeof (struct i386_fp_save) + sizeof (struct i386_fp_regs))) - -struct i386_old_float_state { - int fpkind; /* FP_NO..FP_387 (readonly) */ - int initialized; - unsigned char hw_state[FP_old_STATE_BYTES]; /* actual "hardware" state */ - int exc_status; /* exception status (readonly) */ -}; -#define i386_old_FLOAT_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof(struct i386_old_float_state)/sizeof(unsigned int))) - - -#define PORT_MAP_BITS 0x400 -struct i386_isa_port_map_state { - unsigned char pm[PORT_MAP_BITS>>3]; -}; - -#define i386_ISA_PORT_MAP_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof(struct i386_isa_port_map_state)/sizeof(unsigned int))) /* - * V8086 assist supplies a pointer to an interrupt - * descriptor table in task space. + * VALID_THREAD_STATE_FLAVOR is a platform specific macro that when passed + * an exception flavor will return if that is a defined flavor for that + * platform. The macro must be manually updated to include all of the valid + * exception flavors as defined above. */ -struct i386_v86_assist_state { - unsigned int int_table; /* interrupt table address */ - int int_count; /* interrupt table size */ -}; +#define VALID_THREAD_STATE_FLAVOR(x) \ + ((x == x86_THREAD_STATE32) || \ + (x == x86_FLOAT_STATE32) || \ + (x == x86_EXCEPTION_STATE32) || \ + (x == x86_DEBUG_STATE32) || \ + (x == x86_THREAD_STATE64) || \ + (x == x86_FLOAT_STATE64) || \ + (x == x86_EXCEPTION_STATE64) || \ + (x == x86_DEBUG_STATE64) || \ + (x == x86_THREAD_STATE) || \ + (x == x86_FLOAT_STATE) || \ + (x == x86_EXCEPTION_STATE) || \ + (x == x86_DEBUG_STATE) || \ + (x == THREAD_STATE_NONE)) -struct v86_interrupt_table { - unsigned int count; /* count of pending interrupts */ - unsigned short mask; /* ignore this interrupt if true */ - unsigned short vec; /* vector to take */ -}; -#define i386_V86_ASSIST_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof(struct i386_v86_assist_state)/sizeof(unsigned int))) -struct thread_syscall_state { - unsigned eax; - unsigned edx; - unsigned efl; - unsigned eip; - unsigned esp; +struct x86_state_hdr { + int flavor; + int count; }; +typedef struct x86_state_hdr x86_state_hdr_t; -#define i386_THREAD_SYSCALL_STATE_COUNT ((mach_msg_type_number_t) \ - (sizeof(struct thread_syscall_state) / sizeof(unsigned int))) /* * Main thread state consists of @@ -403,9 +154,7 @@ struct thread_syscall_state { * eip and eflags. */ -#define i386_THREAD_STATE -1 - -typedef struct { +struct i386_thread_state { unsigned int eax; unsigned int ebx; unsigned int ecx; @@ -422,15 +171,17 @@ typedef struct { unsigned int es; unsigned int fs; unsigned int gs; -} i386_thread_state_t; +} ; +/* + * to be depecrated in the future + */ +typedef struct i386_thread_state i386_thread_state_t; #define i386_THREAD_STATE_COUNT ((mach_msg_type_number_t) \ ( sizeof (i386_thread_state_t) / sizeof (int) )) -/* - * x86-64 compatibility - */ -typedef i386_thread_state_t x86_thread_state32_t; + +typedef struct i386_thread_state x86_thread_state32_t; #define x86_THREAD_STATE32_COUNT ((mach_msg_type_number_t) \ ( sizeof (x86_thread_state32_t) / sizeof (int) )) @@ -493,27 +244,110 @@ typedef struct x86_thread_state x86_thread_state_t; #define KERN_CODE_SELECTOR 0x0008 #define KERN_DATA_SELECTOR 0x0010 +typedef struct fp_control { + unsigned short invalid :1, + denorm :1, + zdiv :1, + ovrfl :1, + undfl :1, + precis :1, + :2, + pc :2, +#define FP_PREC_24B 0 +#define FP_PREC_53B 2 +#define FP_PREC_64B 3 + rc :2, +#define FP_RND_NEAR 0 +#define FP_RND_DOWN 1 +#define FP_RND_UP 2 +#define FP_CHOP 3 + /*inf*/ :1, + :3; +} fp_control_t; /* - * Thread floating point state - * includes FPU environment as - * well as the register stack. + * Status word. */ - -#define i386_THREAD_FPSTATE -2 -typedef struct { - fp_env_t environ; - fp_stack_t stack; -} i386_thread_fpstate_t; +typedef struct fp_status { + unsigned short invalid :1, + denorm :1, + zdiv :1, + ovrfl :1, + undfl :1, + precis :1, + stkflt :1, + errsumm :1, + c0 :1, + c1 :1, + c2 :1, + tos :3, + c3 :1, + busy :1; +} fp_status_t; + +/* defn of 80bit x87 FPU or MMX register */ +struct mmst_reg { + char mmst_reg[10]; + char mmst_rsrv[6]; +}; + + +/* defn of 128 bit XMM regs */ +struct xmm_reg { + char xmm_reg[16]; +}; -#define i386_THREAD_FPSTATE_COUNT ((mach_msg_type_number_t) \ - ( sizeof (i386_thread_fpstate_t) / sizeof (int) )) +/* + * Floating point state. + */ + +#define FP_STATE_BYTES 512 /* number of chars worth of data from fpu_fcw */ + +/* For legacy reasons we need to leave the hw_state as char bytes */ +struct i386_float_state { + int fpu_reserved[2]; + fp_control_t fpu_fcw; /* x87 FPU control word */ + fp_status_t fpu_fsw; /* x87 FPU status word */ + uint8_t fpu_ftw; /* x87 FPU tag word */ + uint8_t fpu_rsrv1; /* reserved */ + uint16_t fpu_fop; /* x87 FPU Opcode */ + uint32_t fpu_ip; /* x87 FPU Instruction Pointer offset */ + uint16_t fpu_cs; /* x87 FPU Instruction Pointer Selector */ + uint16_t fpu_rsrv2; /* reserved */ + uint32_t fpu_dp; /* x87 FPU Instruction Operand(Data) Pointer offset */ + uint16_t fpu_ds; /* x87 FPU Instruction Operand(Data) Pointer Selector */ + uint16_t fpu_rsrv3; /* reserved */ + uint32_t fpu_mxcsr; /* MXCSR Register state */ + uint32_t fpu_mxcsrmask; /* MXCSR mask */ + struct mmst_reg fpu_stmm0; /* ST0/MM0 */ + struct mmst_reg fpu_stmm1; /* ST1/MM1 */ + struct mmst_reg fpu_stmm2; /* ST2/MM2 */ + struct mmst_reg fpu_stmm3; /* ST3/MM3 */ + struct mmst_reg fpu_stmm4; /* ST4/MM4 */ + struct mmst_reg fpu_stmm5; /* ST5/MM5 */ + struct mmst_reg fpu_stmm6; /* ST6/MM6 */ + struct mmst_reg fpu_stmm7; /* ST7/MM7 */ + struct xmm_reg fpu_xmm0; /* XMM 0 */ + struct xmm_reg fpu_xmm1; /* XMM 1 */ + struct xmm_reg fpu_xmm2; /* XMM 2 */ + struct xmm_reg fpu_xmm3; /* XMM 3 */ + struct xmm_reg fpu_xmm4; /* XMM 4 */ + struct xmm_reg fpu_xmm5; /* XMM 5 */ + struct xmm_reg fpu_xmm6; /* XMM 6 */ + struct xmm_reg fpu_xmm7; /* XMM 7 */ + char fpu_rsrv4[14*16]; /* reserved */ + int fpu_reserved1; +}; /* - * x86-64 compatibility + * to be depecrated in the future */ -typedef i386_float_state_t x86_float_state32_t; +typedef struct i386_float_state i386_float_state_t; +#define i386_FLOAT_STATE_COUNT ((mach_msg_type_number_t) \ + (sizeof(i386_float_state_t)/sizeof(unsigned int))) + +typedef struct i386_float_state x86_float_state32_t; #define x86_FLOAT_STATE32_COUNT ((mach_msg_type_number_t) \ (sizeof(x86_float_state32_t)/sizeof(unsigned int))) @@ -588,26 +422,21 @@ typedef struct x86_float_state x86_float_state_t; * useful to exception handlers. */ -#define i386_THREAD_EXCEPTSTATE -3 - -typedef struct { - unsigned int trapno; - err_code_t err; -} i386_thread_exceptstate_t; - -#define i386_THREAD_EXCEPTSTATE_COUNT ((mach_msg_type_number_t) \ - ( sizeof (i386_thread_exceptstate_t) / sizeof (int) )) - - -/* - * x86-64 compatibility - */ struct i386_exception_state { unsigned int trapno; unsigned int err; unsigned int faultvaddr; }; +/* + * to be depecrated in the future + */ +typedef struct i386_exception_state i386_exception_state_t; +#define i386_EXCEPTION_STATE_COUNT ((mach_msg_type_number_t) \ + ( sizeof (i386_exception_state_t) / sizeof (int) )) + +#define I386_EXCEPTION_STATE_COUNT i386_EXCEPTION_STATE_COUNT + typedef struct i386_exception_state x86_exception_state32_t; #define x86_EXCEPTION_STATE32_COUNT ((mach_msg_type_number_t) \ ( sizeof (x86_exception_state32_t) / sizeof (int) )) @@ -687,19 +516,264 @@ typedef struct x86_debug_state x86_debug_state_t; #define x86_DEBUG_STATE_COUNT ((mach_msg_type_number_t) \ (sizeof(x86_debug_state_t)/sizeof(unsigned int))) +/* + * Machine-independent way for servers and Mach's exception mechanism to + * choose the most efficient state flavor for exception RPC's: + */ +#define MACHINE_THREAD_STATE x86_THREAD_STATE +#define MACHINE_THREAD_STATE_COUNT x86_THREAD_STATE_COUNT + + +#ifdef XNU_KERNEL_PRIVATE + +#define x86_SAVED_STATE32 THREAD_STATE_NONE + 1 +#define x86_SAVED_STATE64 THREAD_STATE_NONE + 2 + +#define OLD_i386_THREAD_STATE -1 + /* - * Per-thread variable used - * to store 'self' id for cthreads. + * when reloading the segment registers on + * a return out of the kernel, we may take + * a GeneralProtection or SegmentNotPresent + * fault if one or more of the segment + * registers in the saved state was improperly + * specified via an x86_THREAD_STATE32 call + * the frame we push on top of the existing + * save area looks like this... we need to + * carry this as part of the save area + * in case we get hit so that we have a big + * enough stack + */ +struct x86_seg_load_fault32 { + unsigned int trapno; + unsigned int err; + unsigned int eip; + unsigned int cs; + unsigned int efl; +}; + + +/* + * Subset of saved state stored by processor on kernel-to-kernel + * trap. (Used by ddb to examine state guaranteed to be present + * on all traps into debugger.) + */ +struct x86_saved_state32_from_kernel { + unsigned int gs; + unsigned int fs; + unsigned int es; + unsigned int ds; + unsigned int edi; + unsigned int esi; + unsigned int ebp; + unsigned int cr2; /* kernel esp stored by pusha - we save cr2 here later */ + unsigned int ebx; + unsigned int edx; + unsigned int ecx; + unsigned int eax; + unsigned int trapno; + unsigned int err; + unsigned int eip; + unsigned int cs; + unsigned int efl; +}; + +/* + * The format in which thread state is saved by Mach on this machine. This + * state flavor is most efficient for exception RPC's to kernel-loaded + * servers, because copying can be avoided: */ -#define i386_THREAD_CTHREADSTATE -4 - -typedef struct { - unsigned int self; -} i386_thread_cthreadstate_t; +struct x86_saved_state32 { + unsigned int gs; + unsigned int fs; + unsigned int es; + unsigned int ds; + unsigned int edi; + unsigned int esi; + unsigned int ebp; + unsigned int cr2; /* kernel esp stored by pusha - we save cr2 here later */ + unsigned int ebx; + unsigned int edx; + unsigned int ecx; + unsigned int eax; + unsigned int trapno; + unsigned int err; + unsigned int eip; + unsigned int cs; + unsigned int efl; + unsigned int uesp; + unsigned int ss; +}; +typedef struct x86_saved_state32 x86_saved_state32_t; + +#define x86_SAVED_STATE32_COUNT ((mach_msg_type_number_t) \ + (sizeof (x86_saved_state32_t)/sizeof(unsigned int))) + +struct x86_saved_state32_tagged { + uint32_t tag; + struct x86_saved_state32 state; +}; +typedef struct x86_saved_state32_tagged x86_saved_state32_tagged_t; + +struct x86_sframe32 { + /* + * in case we throw a fault reloading + * segment registers on a return out of + * the kernel... the 'slf' state is only kept + * long enough to rejigger (i.e. restore + * the save area to its original state) + * the save area and throw the appropriate + * kernel trap pointing to the 'ssf' state + */ + struct x86_seg_load_fault32 slf; + struct x86_saved_state32_tagged ssf; +}; +typedef struct x86_sframe32 x86_sframe32_t; + + + +/* + * This is the state pushed onto the 64-bit interrupt stack + * on any exception/trap/interrupt. + */ +struct x86_64_intr_stack_frame { + uint32_t trapno; + uint32_t trapfn; + uint64_t err; + uint64_t rip; + uint64_t cs; + uint64_t rflags; + uint64_t rsp; + uint64_t ss; +}; +typedef struct x86_64_intr_stack_frame x86_64_intr_stack_frame_t; -#define i386_THREAD_CTHREADSTATE_COUNT ((mach_msg_type_number_t) \ - ( sizeof (i386_thread_cthreadstate_t) / sizeof (int) )) +/* + * This defines the state saved before entry into compatibility mode. + * The machine state is pushed automatically and the compat state is + * synthethized in the exception handling code. + */ +struct x86_saved_state_compat32 { + struct x86_saved_state32_tagged iss32; + uint32_t pad_for_16byte_alignment[2]; + struct x86_64_intr_stack_frame isf64; +}; +typedef struct x86_saved_state_compat32 x86_saved_state_compat32_t; + + +struct x86_sframe_compat32 { + struct x86_64_intr_stack_frame slf; + uint32_t pad_for_16byte_alignment[2]; + struct x86_saved_state_compat32 ssf; + uint32_t empty[4]; +}; +typedef struct x86_sframe_compat32 x86_sframe_compat32_t; + + + +/* + * thread state format for task running in 64bit long mode + * in long mode, the same hardware frame is always pushed regardless + * of whether there was a change in privlege level... therefore, there + * is no need for an x86_saved_state64_from_kernel variant + */ + +struct x86_saved_state64 { + /* + * saved state organized to reflect the + * system call ABI register convention + * so that we can just pass a pointer + * to the saved state when calling through + * to the actual system call functions + * the ABI limits us to 6 args passed in + * registers... I've add v_arg6 - v_arg8 + * to accomodate our most 'greedy' system + * calls (both BSD and MACH)... the individual + * system call handlers will fill these in + * via copyin if needed... + */ + uint64_t rdi; /* arg0 for system call */ + uint64_t rsi; + uint64_t rdx; + uint64_t r10; + uint64_t r8; + uint64_t r9; /* arg5 for system call */ + uint64_t v_arg6; + uint64_t v_arg7; + uint64_t v_arg8; + + uint64_t cr2; + uint64_t r15; + uint64_t r14; + uint64_t r13; + uint64_t r12; + uint64_t r11; + uint64_t rbp; + uint64_t rbx; + uint64_t rcx; + uint64_t rax; + + uint32_t gs; + uint32_t fs; + struct x86_64_intr_stack_frame isf; +}; +typedef struct x86_saved_state64 x86_saved_state64_t; +#define x86_SAVED_STATE64_COUNT ((mach_msg_type_number_t) \ + (sizeof (struct x86_saved_state64)/sizeof(unsigned int))) + +struct x86_saved_state64_tagged { + uint32_t tag; + x86_saved_state64_t state; +}; +typedef struct x86_saved_state64_tagged x86_saved_state64_tagged_t; + +struct x86_sframe64 { + struct x86_64_intr_stack_frame slf; + uint32_t pad_for_16byte_alignment[3]; + struct x86_saved_state64_tagged ssf; +}; +typedef struct x86_sframe64 x86_sframe64_t; + +extern uint32_t get_eflags_exportmask(void); +/* + * Unified, tagged saved state: + */ +typedef struct { + uint32_t flavor; + union { + x86_saved_state32_t ss_32; + x86_saved_state64_t ss_64; + } uss; +} x86_saved_state_t; +#define ss_32 uss.ss_32 +#define ss_64 uss.ss_64 + +static inline boolean_t +is_saved_state64(x86_saved_state_t *iss) +{ + return (iss->flavor == x86_SAVED_STATE64); +} + +static inline boolean_t +is_saved_state32(x86_saved_state_t *iss) +{ + return (iss->flavor == x86_SAVED_STATE32); +} + +static inline x86_saved_state32_t * +saved_state32(x86_saved_state_t *iss) +{ + return &iss->ss_32; +} + +static inline x86_saved_state64_t * +saved_state64(x86_saved_state_t *iss) +{ + return &iss->ss_64; +} + +#endif /* XNU_KERNEL_PRIVATE */ #endif /* _MACH_I386_THREAD_STATUS_H_ */