X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d52fe63fc81f7e44faaae711812a211a78434976..9bccf70c0258c7cac2dcb80011b2a964d884c552:/osfmk/ppc/savearea.h diff --git a/osfmk/ppc/savearea.h b/osfmk/ppc/savearea.h index a8b4e180f..554cd2bb8 100644 --- a/osfmk/ppc/savearea.h +++ b/osfmk/ppc/savearea.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * @@ -22,24 +22,344 @@ #ifndef _PPC_SAVEAREA_H_ #define _PPC_SAVEAREA_H_ -#include +#ifndef ASSEMBLER + +#include + +#ifdef __APPLE_API_PRIVATE + +#ifdef MACH_KERNEL_PRIVATE #include +typedef struct savearea_comm { + +/* + * The following fields are common to all saveareas and are used to manage individual + * contexts. + * + * Fields that start with "save" are part of the individual saveareas. Those that + * start with "sac" pertain to the free pool stuff and are valid only on the first slot + * in the page. + */ + + +/* Keep the save_prev, sac_next, and sac_prev in these positions, some assemble code depends upon it to + * match up with fields in saveanchor. + */ + struct savearea *save_prev; /* The address of the previous (or next) savearea */ + unsigned int *sac_next; /* Points to next savearea page that has a free slot - real */ + unsigned int *sac_prev; /* Points to previous savearea page that has a free slot - real */ + unsigned int save_flags; /* Various flags */ + unsigned int save_level; /* Context ID */ + unsigned int save_time[2]; /* Context save time - for debugging or performance */ + struct thread_activation *save_act; /* Associated activation */ + +/* 0x20 */ + + unsigned int sac_vrswap; /* XOR mask to swap V to R or vice versa */ + unsigned int sac_alloc; /* Bitmap of allocated slots */ + unsigned int sac_flags; /* Various flags */ + unsigned int save_misc0; /* Various stuff */ + unsigned int save_misc1; /* Various stuff */ + unsigned int save_misc2; /* Various stuff */ + unsigned int save_misc3; /* Various stuff */ + unsigned int save_misc4; /* Various stuff */ + + unsigned int save_040[8]; /* Fill 32 bytes */ + + /* offset 0x0060 */ +} savearea_comm; +#endif + +#ifdef BSD_KERNEL_PRIVATE +typedef struct savearea_comm { + unsigned int save_000[24]; +} savearea_comm; +#endif + +#if defined(MACH_KERNEL_PRIVATE) || defined(BSD_KERNEL_PRIVATE) +/* + * This type of savearea contains all of the general context. + */ + +typedef struct savearea { + + savearea_comm save_hdr; /* Stuff common to all saveareas */ + + unsigned int save_060[8]; /* Fill 32 bytes */ + /* offset 0x0080 */ + unsigned int save_r0; + unsigned int save_r1; + unsigned int save_r2; + unsigned int save_r3; + unsigned int save_r4; + unsigned int save_r5; + unsigned int save_r6; + unsigned int save_r7; + + /* offset 0x0A0 */ + unsigned int save_r8; + unsigned int save_r9; + unsigned int save_r10; + unsigned int save_r11; + unsigned int save_r12; + unsigned int save_r13; + unsigned int save_r14; + unsigned int save_r15; + + /* offset 0x0C0 */ + unsigned int save_r16; + unsigned int save_r17; + unsigned int save_r18; + unsigned int save_r19; + unsigned int save_r20; + unsigned int save_r21; + unsigned int save_r22; + unsigned int save_r23; + + /* offset 0x0E0 */ + unsigned int save_r24; + unsigned int save_r25; + unsigned int save_r26; + unsigned int save_r27; + unsigned int save_r28; + unsigned int save_r29; + unsigned int save_r30; + unsigned int save_r31; + + /* offset 0x100 */ + unsigned int save_srr0; + unsigned int save_srr1; + unsigned int save_cr; + unsigned int save_xer; + unsigned int save_lr; + unsigned int save_ctr; + unsigned int save_dar; + unsigned int save_dsisr; + + + /* offset 0x120 */ + unsigned int save_vscr[4]; + unsigned int save_fpscrpad; + unsigned int save_fpscr; + unsigned int save_exception; + unsigned int save_vrsave; + + /* offset 0x140 */ + unsigned int save_sr0; + unsigned int save_sr1; + unsigned int save_sr2; + unsigned int save_sr3; + unsigned int save_sr4; + unsigned int save_sr5; + unsigned int save_sr6; + unsigned int save_sr7; + + /* offset 0x160 */ + unsigned int save_sr8; + unsigned int save_sr9; + unsigned int save_sr10; + unsigned int save_sr11; + unsigned int save_sr12; + unsigned int save_sr13; + unsigned int save_sr14; + unsigned int save_sr15; + + /* offset 0x180 */ + unsigned int save_180[8]; + unsigned int save_1A0[8]; + unsigned int save_1C0[8]; + unsigned int save_1E0[8]; + unsigned int save_200[8]; + unsigned int save_220[8]; + unsigned int save_240[8]; + unsigned int save_260[8]; + + /* offset 0x280 */ +} savearea; + + +/* + * This type of savearea contains all of the floating point context. + */ + +typedef struct savearea_fpu { -void save_release(struct savearea *save); /* Release a save area */ + savearea_comm save_hdr; /* Stuff common to all saveareas */ + + unsigned int save_060[8]; /* Fill 32 bytes */ + /* offset 0x0080 */ + double save_fp0; + double save_fp1; + double save_fp2; + double save_fp3; + + double save_fp4; + double save_fp5; + double save_fp6; + double save_fp7; + + double save_fp8; + double save_fp9; + double save_fp10; + double save_fp11; + + double save_fp12; + double save_fp13; + double save_fp14; + double save_fp15; + + double save_fp16; + double save_fp17; + double save_fp18; + double save_fp19; + + double save_fp20; + double save_fp21; + double save_fp22; + double save_fp23; + + double save_fp24; + double save_fp25; + double save_fp26; + double save_fp27; + + double save_fp28; + double save_fp29; + double save_fp30; + double save_fp31; + /* offset 0x180 */ + unsigned int save_180[8]; + unsigned int save_1A0[8]; + unsigned int save_1C0[8]; + unsigned int save_1E0[8]; + unsigned int save_200[8]; + unsigned int save_220[8]; + unsigned int save_240[8]; + unsigned int save_260[8]; + + /* offset 0x280 */ +} savearea_fpu; + + + +/* + * This type of savearea contains all of the vector context. + */ + +typedef struct savearea_vec { + + savearea_comm save_hdr; /* Stuff common to all saveareas */ + + unsigned int save_060[7]; /* Fill 32 bytes */ + unsigned int save_vrvalid; /* Valid registers in saved context */ + + /* offset 0x0080 */ + unsigned int save_vr0[4]; + unsigned int save_vr1[4]; + unsigned int save_vr2[4]; + unsigned int save_vr3[4]; + unsigned int save_vr4[4]; + unsigned int save_vr5[4]; + unsigned int save_vr6[4]; + unsigned int save_vr7[4]; + unsigned int save_vr8[4]; + unsigned int save_vr9[4]; + unsigned int save_vr10[4]; + unsigned int save_vr11[4]; + unsigned int save_vr12[4]; + unsigned int save_vr13[4]; + unsigned int save_vr14[4]; + unsigned int save_vr15[4]; + unsigned int save_vr16[4]; + unsigned int save_vr17[4]; + unsigned int save_vr18[4]; + unsigned int save_vr19[4]; + unsigned int save_vr20[4]; + unsigned int save_vr21[4]; + unsigned int save_vr22[4]; + unsigned int save_vr23[4]; + unsigned int save_vr24[4]; + unsigned int save_vr25[4]; + unsigned int save_vr26[4]; + unsigned int save_vr27[4]; + unsigned int save_vr28[4]; + unsigned int save_vr29[4]; + unsigned int save_vr30[4]; + unsigned int save_vr31[4]; + + /* offset 0x280 */ +} savearea_vec; +#endif /* MACH_KERNEL_PRIVATE || BSD_KERNEL_PRIVATE */ + +#ifdef MACH_KERNEL_PRIVATE + +struct Saveanchor { + +/* + * Note that this force aligned in aligned_data.s and must be in V=R storage. + * Also, all addresses in chains are physical. This structure can only be + * updated with translation and interrupts disabled. This is because it is + * locked during exception processing and if we were to take a PTE miss while the + * lock were held, well, that would be very bad now wouldn't it? + */ + + unsigned int savelock; /* Lock word for savearea free list manipulation */ + unsigned int *savepoolfwd; /* Forward anchor for the free pool */ + unsigned int *savepoolbwd; /* Backward anchor for the free pool */ + volatile unsigned int savefree; /* Anchor for the global free list */ + volatile unsigned int savefreecnt; /* Number of saveareas on global free list */ + volatile int saveadjust; /* If 0 number of saveareas is ok, otherwise number to change (positive means grow, negative means shrink */ + volatile int saveinuse; /* Number of areas in use counting those on the local free list */ + volatile int savetarget; /* Number of savearea's needed */ + int savemaxcount; /* Maximum saveareas ever allocated */ + + +}; + + +#define sac_cnt (4096 / sizeof(savearea)) /* Number of saveareas per page */ +#define sac_empty (0xFFFFFFFF << (32 - sac_cnt)) /* Mask with all entries empty */ +#define sac_perm 0x40000000 /* Page permanently assigned */ +#define sac_permb 1 /* Page permanently assigned - bit position */ + +#define LocalSaveTarget (((8 + sac_cnt - 1) / sac_cnt) * sac_cnt) /* Target for size of local savearea free list */ +#define LocalSaveMin (LocalSaveTarget / 2) /* Min size of local savearea free list before we grow */ +#define LocalSaveMax (LocalSaveTarget * 2) /* Max size of local savearea free list before we trim */ + +#define FreeListMin (2 * LocalSaveTarget * NCPUS) /* Always make sure there are enough to fill local list twice per processor */ +#define SaveLowHysteresis LocalSaveTarget /* The number off from target before we adjust upwards */ +#define SaveHighHysteresis FreeListMin /* The number off from target before we adjust downwards */ +#define InitialSaveAreas (2 * FreeListMin) /* The number of saveareas to make at boot time */ +#define InitialSaveTarget FreeListMin /* The number of saveareas for an initial target. This should be the minimum ever needed. */ +#define InitialSaveBloks (InitialSaveAreas + sac_cnt - 1) / sac_cnt /* The number of savearea blocks to allocate at boot */ + + +void save_release(struct savearea *); /* Release a save area */ struct savectl *save_dequeue(void); /* Find and dequeue one that is all empty */ -unsigned int save_queue(vm_offset_t); /* Add a new savearea block to the free list */ +unsigned int save_queue(struct savearea *); /* Add a new savearea block to the free list */ struct savearea *save_get(void); /* Obtains a savearea from the free list (returns virtual address) */ struct savearea *save_get_phys(void); /* Obtains a savearea from the free list (returns physical address) */ struct savearea *save_alloc(void); /* Obtains a savearea and allocates blocks if needed */ struct savearea *save_cpv(struct savearea *); /* Converts a physical savearea address to virtual */ -unsigned int *save_deb(unsigned int *msr); /* Finds virtual of first free block and disableds interrupts */ void save_ret(struct savearea *); /* Returns a savearea to the free list */ -#if DEBUG -void save_free_dump(void); /* Dump the free chain */ -void DumpTheSave(struct savearea *); /* Prints out a savearea */ -void DumpBackChain(struct savearea *save); /* Dumps a backchain */ -#endif +void save_ret_phys(struct savearea *); /* Returns a savearea to the free list */ +void save_adjust(void); /* Adjust size of the global free list */ +struct savearea_comm *save_trim_freet(void); /* Remove free pages from savearea pool */ -#endif /* _PPC_SAVEAREA_H_ */ +#endif /* MACH_KERNEL_PRIVATE */ +#endif /* __APPLE_API_PRIVATE */ + +#endif /* ndef ASSEMBLER */ +#define SAVattach 0x80000000 /* Savearea has valid context */ +#define SAVrststk 0x00010000 /* Indicates that the current stack should be reset to empty */ +#define SAVsyscall 0x00020000 /* Indicates that the savearea is associated with a syscall */ +#define SAVredrive 0x00040000 /* Indicates that the low-level fault handler associated */ +#define SAVtype 0x0000FF00 /* Shows type of savearea */ +#define SAVtypeshft 8 /* Shift to position type */ +#define SAVempty 0x86 /* Savearea is on free list */ +#define SAVgeneral 0x01 /* Savearea contains general context */ +#define SAVfloat 0x02 /* Savearea contains floating point context */ +#define SAVvector 0x03 /* Savearea contains vector context */ +#endif /* _PPC_SAVEAREA_H_ */