X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fparms.lisp;h=8bf367406d62dd73a9b0a5363892823228a6ba70;hb=fc6722762a839241675fac03d48531d5916edf50;hp=f2c06a1183fa63333c504ddcc1b18dd06a155acc;hpb=02c9007b4ca5753406f60019f4fe5e5f8392541a;p=sbcl.git diff --git a/src/compiler/x86/parms.lisp b/src/compiler/x86/parms.lisp index f2c06a1..8bf3674 100644 --- a/src/compiler/x86/parms.lisp +++ b/src/compiler/x86/parms.lisp @@ -27,15 +27,19 @@ ;;; the number of bits per word, where a word holds one lisp descriptor (def!constant n-word-bits 32) +;;; the natural width of a machine word (as seen in e.g. register width, +;;; address space) +(def!constant n-machine-word-bits 32) + ;;; the number of bits per byte, where a byte is the smallest ;;; addressable object (def!constant n-byte-bits 8) -;;; the number of bits to shift between word addresses and byte addresses -(def!constant word-shift (1- (integer-length (/ n-word-bits n-byte-bits)))) +;;; The minimum immediate offset in a memory-referencing instruction. +(def!constant minimum-immediate-offset (- (expt 2 31))) -;;; the number of bytes in a word -(def!constant n-word-bytes (/ n-word-bits n-byte-bits)) +;;; The maximum immediate offset in a memory-referencing instruction. +(def!constant maximum-immediate-offset (1- (expt 2 31))) (def!constant float-sign-shift 31) @@ -43,7 +47,7 @@ ;;; These values were taken from the alpha code. The values for ;;; bias and exponent min/max are not the same as shown in the 486 book. ;;; They may be correct for how Python uses them. -(def!constant single-float-bias 126) ; Intel says 127. +(def!constant single-float-bias 126) ; Intel says 127. (defconstant-eqx single-float-exponent-byte (byte 8 23) #'equalp) (defconstant-eqx single-float-significand-byte (byte 23 0) #'equalp) ;;; comment from CMU CL: @@ -67,7 +71,7 @@ (defconstant-eqx long-float-significand-byte (byte 31 0) #'equalp) (def!constant long-float-normal-exponent-min 1) (def!constant long-float-normal-exponent-max #x7FFE) -(def!constant long-float-hidden-bit (ash 1 31)) ; actually not hidden +(def!constant long-float-hidden-bit (ash 1 31)) ; actually not hidden (def!constant long-float-trapping-nan-bit (ash 1 30)) (def!constant single-float-digits @@ -80,18 +84,22 @@ (+ (byte-size long-float-significand-byte) n-word-bits 1)) ;;; pfw -- from i486 microprocessor programmer's reference manual -(def!constant float-invalid-trap-bit (ash 1 0)) +(def!constant float-invalid-trap-bit (ash 1 0)) (def!constant float-denormal-trap-bit (ash 1 1)) (def!constant float-divide-by-zero-trap-bit (ash 1 2)) (def!constant float-overflow-trap-bit (ash 1 3)) (def!constant float-underflow-trap-bit (ash 1 4)) -(def!constant float-inexact-trap-bit (ash 1 5)) +(def!constant float-inexact-trap-bit (ash 1 5)) (def!constant float-round-to-nearest 0) (def!constant float-round-to-negative 1) (def!constant float-round-to-positive 2) (def!constant float-round-to-zero 3) +(def!constant float-precision-24-bit 0) +(def!constant float-precision-53-bit 2) +(def!constant float-precision-64-bit 3) + (defconstant-eqx float-rounding-mode (byte 2 10) #'equalp) (defconstant-eqx float-sticky-bits (byte 6 16) #'equalp) (defconstant-eqx float-traps-byte (byte 6 0) #'equalp) @@ -131,43 +139,154 @@ ;;; use. (They want to use this address range even if we try to ;;; reserve it with a call to validate() as the first operation in ;;; main().) +;;; * For NetBSD 2.0, the following ranges are used by normal +;;; executables and mmap: +;;; ** Executables are (by default) loaded at 0x08048000. +;;; ** The break for the sbcl runtime seems to end around 0x08400000 +;;; We set read only space around 0x20000000, static +;;; space around 0x30000000, all ending below 0x37fff000 +;;; ** ld.so and other mmap'ed stuff like shared libs start around +;;; 0x48000000 +;;; We set dynamic space between 0x60000000 and 0x98000000 +;;; ** Bottom of the stack is typically not below 0xb0000000 +;;; FYI, this can be looked at with the "pmap" program, and if you +;;; set the top-down mmap allocation option in the kernel (not yet +;;; the default), all bets are totally off! +;;; * For FreeBSD, the requirement of user and kernel space are +;;; getting larger, and users tend to extend them. +;;; If MAXDSIZ is extended from 512MB to 1GB, we can't use up to +;;; around 0x50000000. +;;; And if KVA_PAGES is extended from 1GB to 1.5GB, we can't use +;;; down to around 0xA0000000. +;;; So we use 0x58000000--0x98000000 for dynamic space. +;;; * OpenBSD address space changes for W^X as well as malloc() +;;; randomization made the old addresses unsafe. +;;; ** By default (linked without -Z option): +;;; The executable's text segment starts at #x1c000000 and the +;;; data segment MAXDSIZ bytes higher, at #x3c000000. Shared +;;; library text segments start randomly between #x00002000 and +;;; #x10002000, with the data segment MAXDSIZ bytes after that. +;;; ** If the -Z linker option is used: +;;; The executable's text and data segments simply start at +;;; #x08048000, data immediately following text. Shared library +;;; text and data is placed as if allocated by malloc(). +;;; ** In both cases, the randomized range for malloc() starts +;;; MAXDSIZ bytes after the end of the data segment (#x48048000 +;;; with -Z, #x7c000000 without), and extends 256 MB. +;;; ** The read only, static, and linkage table spaces should be +;;; safe with and without -Z if they are located just before +;;; #x1c000000. +;;; ** Ideally the dynamic space should be at #x94000000, 64 MB +;;; after the end of the highest random malloc() address. +;;; Unfortunately the dynamic space must be in the lower half +;;; of the address space, where there are no large areas which +;;; are unused both with and without -Z. So we break -Z by +;;; starting at #x40000000. By only using 512 - 64 MB we can +;;; run under the default 512 MB data size resource limit. + +#!+win32 +(progn + + (def!constant read-only-space-start #x22000000) + (def!constant read-only-space-end #x220ff000) + + (def!constant static-space-start #x22100000) + (def!constant static-space-end #x221ff000) + + (def!constant dynamic-space-start #x22300000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x42300000)) + + (def!constant linkage-table-space-start #x22200000) + (def!constant linkage-table-space-end #x222ff000)) #!+linux (progn + (def!constant read-only-space-start #x01000000) + (def!constant read-only-space-end #x010ff000) - (def!constant read-only-space-start #x01000000) - (def!constant read-only-space-end #x037ff000) + (def!constant static-space-start #x01100000) + (def!constant static-space-end #x011ff000) - (def!constant static-space-start #x05000000) - (def!constant static-space-end #x07fff000) + (def!constant dynamic-space-start #x09000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x29000000)) - (def!constant dynamic-space-start #x09000000) - (def!constant dynamic-space-end #x29000000) + (def!constant linkage-table-space-start #x01200000) + (def!constant linkage-table-space-end #x012ff000)) - (def!constant alternate-signal-stack-start #x58000000)) +#!+sunos +(progn + (def!constant read-only-space-start #x20000000) + (def!constant read-only-space-end #x200ff000) + + (def!constant static-space-start #x20100000) + (def!constant static-space-end #x201ff000) + + (def!constant dynamic-space-start #x48000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #xA0000000)) -#!+bsd + (def!constant linkage-table-space-start #x20200000) + (def!constant linkage-table-space-end #x202ff000)) + +#!+freebsd (progn + (def!constant read-only-space-start #x01000000) + (def!constant read-only-space-end #x010ff000) + + (def!constant static-space-start #x01100000) + (def!constant static-space-end #x011ff000) + + (def!constant dynamic-space-start #x58000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x98000000)) - (def!constant read-only-space-start #x10000000) - (def!constant read-only-space-end #x1ffff000) + (def!constant linkage-table-space-start #x01200000) + (def!constant linkage-table-space-end #x012ff000)) - (def!constant static-space-start - #!+freebsd #x30000000 - #!+openbsd #x28000000) - (def!constant static-space-end #x37fff000) +#!+openbsd +(progn + (def!constant read-only-space-start #x1b000000) + (def!constant read-only-space-end #x1b0ff000) + + (def!constant static-space-start #x1b100000) + (def!constant static-space-end #x1b1ff000) + + (def!constant dynamic-space-start #x40000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x5bfff000)) + + (def!constant linkage-table-space-start #x1b200000) + (def!constant linkage-table-space-end #x1b2ff000)) + +#!+netbsd +(progn + (def!constant read-only-space-start #x20000000) + (def!constant read-only-space-end #x200ff000) + + (def!constant static-space-start #x20100000) + (def!constant static-space-end #x201ff000) + + (def!constant dynamic-space-start #x60000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x98000000)) + + ;; In CMUCL: 0xB0000000->0xB1000000 + (def!constant linkage-table-space-start #x20200000) + (def!constant linkage-table-space-end #x202ff000)) + + +#!+darwin +(progn + (def!constant read-only-space-start #x04000000) + (def!constant read-only-space-end #x040ff000) - (def!constant dynamic-space-start - #!+freebsd #x48000000 - #!+openbsd #x50000000) - (def!constant dynamic-space-end #x88000000) - (def!constant alternate-signal-stack-start - #!+freebsd #x44000000 - #!+openbsd #x4c000000)) + (def!constant static-space-start #x04100000) + (def!constant static-space-end #x041ff000) + (def!constant dynamic-space-start #x10000000) + (def!constant dynamic-space-end (!configure-dynamic-space-end #x6ffff000)) -;;; don't need alternate-signal-stack-end : it's -start+SIGSTKSZ + (def!constant linkage-table-space-start #x04200000) + (def!constant linkage-table-space-end #x042ff000)) +;;; Size of one linkage-table entry in bytes. +(def!constant linkage-table-entry-size 8) ;;; Given that NIL is the first thing allocated in static space, we ;;; know its value at compile time: @@ -175,31 +294,19 @@ ;;;; other miscellaneous constants -(defenum (:suffix -trap :start 8) - halt - pending-interrupt - error - cerror - breakpoint - fun-end-breakpoint - single-step-breakpoint) -;;; FIXME: It'd be nice to replace all the DEFENUMs with something like -;;; (WITH-DEF-ENUM (:START 8) -;;; (DEF-ENUM HALT-TRAP) -;;; (DEF-ENUM PENDING-INTERRUPT-TRAP) -;;; ..) -;;; for the benefit of anyone doing a lexical search for definitions -;;; of these symbols. - -(defenum (:prefix object-not- :suffix -trap :start 16) - list - instance) - -(defenum (:prefix trace-table-) - normal - call-site - fun-prologue - fun-epilogue) +(defenum (:start 8) + halt-trap + pending-interrupt-trap + error-trap + cerror-trap + breakpoint-trap + fun-end-breakpoint-trap + single-step-around-trap + single-step-before-trap) + +(defenum (:start 24) + object-not-list-trap + object-not-instance-trap) ;;;; static symbols @@ -216,74 +323,45 @@ (defvar *allocation-pointer*) (defvar *binding-stack-pointer*) -;;; FIXME: !COLD-INIT probably doesn't need -;;; to be in the static symbols table any more. (defparameter *static-symbols* - '(t - - ;; The C startup code must fill these in. - *posix-argv* - - ;; functions that the C code needs to call. When adding to this list, - ;; also add a `frob' form in genesis.lisp finish-symbols. - sub-gc - sb!kernel::internal-error - sb!kernel::control-stack-exhausted-error - sb!di::handle-breakpoint - fdefinition-object - - ;; free pointers - ;; - ;; Note that these are FIXNUM word counts, not (as one might - ;; expect) byte counts or SAPs. The reason seems to be that by - ;; representing them this way, we can avoid consing bignums. - ;; -- WHN 2000-10-02 - *read-only-space-free-pointer* - *static-space-free-pointer* - *initial-dynamic-space-free-pointer* - - ;; things needed for non-local exit - *current-catch-block* - *current-unwind-protect-block* - *alien-stack* - - ;; interrupt handling - *pseudo-atomic-atomic* - *pseudo-atomic-interrupted* - sb!unix::*interrupts-enabled* - sb!unix::*interrupt-pending* - *free-interrupt-context-index* - - *free-tls-index* - sb!thread::*foreground-thread-stack* - - *allocation-pointer* - *binding-stack-pointer* - *binding-stack-start* - *control-stack-start* - *control-stack-end* - - ;; the floating point constants - *fp-constant-0d0* - *fp-constant-1d0* - *fp-constant-0f0* - *fp-constant-1f0* - ;; The following are all long-floats. - *fp-constant-0l0* - *fp-constant-1l0* - *fp-constant-pi* - *fp-constant-l2t* - *fp-constant-l2e* - *fp-constant-lg2* - *fp-constant-ln2* - - ;; The ..SLOT-UNBOUND.. symbol is static in order to optimise the - ;; common slot unbound check. - ;; - ;; FIXME: In SBCL, the CLOS code has become sufficiently tightly - ;; integrated into the system that it'd probably make sense to use - ;; the ordinary unbound marker for this. - sb!pcl::..slot-unbound..)) + (append + *common-static-symbols* + *c-callable-static-symbols* + '(*alien-stack* + + ;; interrupt handling + *pseudo-atomic-bits* + + *allocation-pointer* + *binding-stack-pointer* + + ;; the floating point constants + *fp-constant-0d0* + *fp-constant-1d0* + *fp-constant-0f0* + *fp-constant-1f0* + ;; The following are all long-floats. + *fp-constant-0l0* + *fp-constant-1l0* + *fp-constant-pi* + *fp-constant-l2t* + *fp-constant-l2e* + *fp-constant-lg2* + *fp-constant-ln2* + + ;; For GC-AND-SAVE + *restart-lisp-function* + + ;; For the UNWIND-TO-FRAME-AND-CALL VOP + *unwind-to-frame-function* + + ;; Needed for callbacks to work across saving cores. see + ;; ALIEN-CALLBACK-ASSEMBLER-WRAPPER in c-call.lisp for gory + ;; details. + sb!alien::*enter-alien-callback* + + ;; see comments in ../x86-64/parms.lisp + sb!pcl::..slot-unbound..))) (defparameter *static-funs* '(length