X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fparms.lisp;h=816db3180838d02b1c9d6a9e1a1780a86fe1fb1b;hb=1600081cf1b71b3d0e2e40de1c1c124a3a4fd40c;hp=af9899a9a63b6e8a4668dcdb3de8031b41bf2c7f;hpb=2716573f357f204c5f546d1d34d285dd24ff43a1;p=sbcl.git diff --git a/src/compiler/x86/parms.lisp b/src/compiler/x86/parms.lisp index af9899a..816db31 100644 --- a/src/compiler/x86/parms.lisp +++ b/src/compiler/x86/parms.lisp @@ -24,83 +24,86 @@ ;;;; machine architecture parameters -(defconstant word-bits 32 - #!+sb-doc - "Number of bits per word where a word holds one lisp descriptor.") +;;; the number of bits per word, where a word holds one lisp descriptor +(def!constant n-word-bits 32) -(defconstant byte-bits 8 - #!+sb-doc - "Number of bits per byte where a byte is the smallest addressable object.") +;;; the natural width of a machine word (as seen in e.g. register width, +;;; address space) +(def!constant n-machine-word-bits 32) -(defconstant word-shift (1- (integer-length (/ word-bits byte-bits))) - #!+sb-doc - "Number of bits to shift between word addresses and byte addresses.") +;;; the number of bits per byte, where a byte is the smallest +;;; addressable object +(def!constant n-byte-bits 8) -(defconstant word-bytes (/ word-bits byte-bits) - #!+sb-doc - "Number of bytes in a word.") +;;; The size in bytes of the GENCGC pages. Should be a multiple of the +;;; architecture code size. +(def!constant gencgc-page-size 4096) -(defconstant float-sign-shift 31) +(def!constant float-sign-shift 31) ;;; comment from CMU CL: ;;; 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. -(defconstant 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: ;;; The 486 book shows the exponent range -126 to +127. The Lisp ;;; code that uses these values seems to want already biased numbers. -(defconstant single-float-normal-exponent-min 1) -(defconstant single-float-normal-exponent-max 254) -(defconstant single-float-hidden-bit (ash 1 23)) -(defconstant single-float-trapping-nan-bit (ash 1 22)) +(def!constant single-float-normal-exponent-min 1) +(def!constant single-float-normal-exponent-max 254) +(def!constant single-float-hidden-bit (ash 1 23)) +(def!constant single-float-trapping-nan-bit (ash 1 22)) -(defconstant double-float-bias 1022) +(def!constant double-float-bias 1022) (defconstant-eqx double-float-exponent-byte (byte 11 20) #'equalp) (defconstant-eqx double-float-significand-byte (byte 20 0) #'equalp) -(defconstant double-float-normal-exponent-min 1) -(defconstant double-float-normal-exponent-max #x7FE) -(defconstant double-float-hidden-bit (ash 1 20)) -(defconstant double-float-trapping-nan-bit (ash 1 19)) +(def!constant double-float-normal-exponent-min 1) +(def!constant double-float-normal-exponent-max #x7FE) +(def!constant double-float-hidden-bit (ash 1 20)) +(def!constant double-float-trapping-nan-bit (ash 1 19)) -(defconstant long-float-bias 16382) +(def!constant long-float-bias 16382) (defconstant-eqx long-float-exponent-byte (byte 15 0) #'equalp) (defconstant-eqx long-float-significand-byte (byte 31 0) #'equalp) -(defconstant long-float-normal-exponent-min 1) -(defconstant long-float-normal-exponent-max #x7FFE) -(defconstant long-float-hidden-bit (ash 1 31)) ; actually not hidden -(defconstant long-float-trapping-nan-bit (ash 1 30)) +(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-trapping-nan-bit (ash 1 30)) -(defconstant single-float-digits +(def!constant single-float-digits (+ (byte-size single-float-significand-byte) 1)) -(defconstant double-float-digits - (+ (byte-size double-float-significand-byte) word-bits 1)) +(def!constant double-float-digits + (+ (byte-size double-float-significand-byte) n-word-bits 1)) -(defconstant long-float-digits - (+ (byte-size long-float-significand-byte) word-bits 1)) +(def!constant long-float-digits + (+ (byte-size long-float-significand-byte) n-word-bits 1)) ;;; pfw -- from i486 microprocessor programmer's reference manual -(defconstant float-invalid-trap-bit (ash 1 0)) -(defconstant float-denormal-trap-bit (ash 1 1)) -(defconstant float-divide-by-zero-trap-bit (ash 1 2)) -(defconstant float-overflow-trap-bit (ash 1 3)) -(defconstant float-underflow-trap-bit (ash 1 4)) -(defconstant float-inexact-trap-bit (ash 1 5)) - -(defconstant float-round-to-nearest 0) -(defconstant float-round-to-negative 1) -(defconstant float-round-to-positive 2) -(defconstant float-round-to-zero 3) +(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-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) (defconstant-eqx float-exceptions-byte (byte 6 16) #'equalp) (defconstant-eqx float-precision-control (byte 2 8) #'equalp) -(defconstant float-fast-bit 0) ; no fast mode on x86 +(def!constant float-fast-bit 0) ; no fast mode on x86 ;;;; description of the target address space @@ -116,55 +119,147 @@ ;;; * On FreeBSD, ;;; ** The space 0x0E000000-0x10000000 is "Foreign segment". ;;; ** The space 0x20000000-0x30000000 is reserved for shared libs. -;;; And there have been a few changes since the fork: +;;; And there have been some changes since the fork from CMU CL: +;;; * The OpenBSD port is new since the fork. We started with +;;; the FreeBSD address map, which actually worked until the +;;; Alpha port patches, for reasons which in retrospect are rather +;;; mysterious. After the Alpha port patches were added, the +;;; OpenBSD port suffered memory corruption problems. While +;;; debugging those, it was discovered that src/runtime/trymap +;;; failed for the control stack region #x40000000-#x47fff000. +;;; After the control stack was moved upward out of this region +;;; (stealing some bytes from dynamic space) the problems went +;;; away. ;;; * The FreeBSD STATIC-SPACE-START value was bumped up from ;;; #x28000000 to #x30000000 when FreeBSD ld.so dynamic linking ;;; support was added for FreeBSD ca. 20000910. This was to keep from -;;; stomping on an address range that the dynamic libraries want to 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().) +;;; stomping on an address range that the dynamic libraries want to +;;; 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! + +#!+win32 +(progn + + (def!constant read-only-space-start #x02000000) + (def!constant read-only-space-end #x047ff000) + + (def!constant static-space-start #x05000000) + (def!constant static-space-end #x07fff000) + + (def!constant dynamic-space-start #x09000000) + (def!constant dynamic-space-end #x29000000) + + (def!constant linkage-table-space-start #x30000000) + (def!constant linkage-table-space-end #x40000000)) #!+linux (progn + (def!constant read-only-space-start #x01000000) + (def!constant read-only-space-end #x037ff000) + + (def!constant static-space-start #x05000000) + (def!constant static-space-end #x07fff000) - (defconstant read-only-space-start #x01000000) - (defconstant read-only-space-end #x037ff000) + (def!constant dynamic-space-start #x09000000) + (def!constant dynamic-space-end #x29000000) - (defconstant static-space-start #x05000000) - (defconstant static-space-end #x07fff000) + (def!constant linkage-table-space-start #x70000000) + (def!constant linkage-table-space-end #x7ffff000)) - (defconstant dynamic-space-start #x09000000) - (defconstant dynamic-space-end #x29000000) +#!+sunos +(progn + (def!constant read-only-space-start #x20000000) + (def!constant read-only-space-end #x2ffff000) + + (def!constant static-space-start #x40000000) + (def!constant static-space-end #x42fff000) - (defconstant control-stack-start #x50000000) - (defconstant control-stack-end #x57fff000) + (def!constant dynamic-space-start #x48000000) + (def!constant dynamic-space-end #xA0000000) - (defconstant binding-stack-start #x60000000) - (defconstant binding-stack-end #x67fff000)) + (def!constant linkage-table-space-start #xA2000000) + (def!constant linkage-table-space-end #xA3000000)) -#!+bsd +#!+freebsd (progn + (def!constant read-only-space-start #x10000000) + (def!constant read-only-space-end #x1ffff000) + + (def!constant static-space-start #x30000000) + (def!constant static-space-end #x37fff000) - (defconstant read-only-space-start #x10000000) - (defconstant read-only-space-end #x1ffff000) + (def!constant dynamic-space-start #x48000000) + (def!constant dynamic-space-end #x88000000) + + ;; In CMUCL: 0xB0000000->0xB1000000 + (def!constant linkage-table-space-start #x90000000) + (def!constant linkage-table-space-end #x91000000)) + +#!+openbsd +(progn + (def!constant read-only-space-start #x40000000) + (def!constant read-only-space-end #x47fff000) + + (def!constant static-space-start #x50000000) + (def!constant static-space-end #x5ffff000) + + (def!constant dynamic-space-start #x80000000) + (def!constant dynamic-space-end #xA0000000) + + ;; In CMUCL: 0xB0000000->0xB1000000 + (def!constant linkage-table-space-start #xA0000000) + (def!constant linkage-table-space-end #xA1000000)) + +#!+netbsd +(progn + (def!constant read-only-space-start #x20000000) + (def!constant read-only-space-end #x2ffff000) + + (def!constant static-space-start #x30000000) + (def!constant static-space-end #x37fff000) + + (def!constant dynamic-space-start #x60000000) + (def!constant dynamic-space-end #x98000000) + + ;; In CMUCL: 0xB0000000->0xB1000000 + (def!constant linkage-table-space-start #xA0000000) + (def!constant linkage-table-space-end #xA1000000)) + + +#!+darwin +(progn + (def!constant read-only-space-start #x01000000) + (def!constant read-only-space-end #x04ff8000) - (defconstant static-space-start - #!+freebsd #x30000000 - #!+openbsd #x28000000) - (defconstant static-space-end #x37fff000) + (def!constant static-space-start #x08000000) + (def!constant static-space-end #x097fff00) - (defconstant binding-stack-start #x38000000) - (defconstant binding-stack-end #x3ffff000) + (def!constant dynamic-space-start #x10000000) + (def!constant dynamic-space-end #x6ffff000) - (defconstant control-stack-start #x40000000) - (defconstant control-stack-end #x47fff000) + (def!constant linkage-table-space-start #x0a000000) + (def!constant linkage-table-space-end #x0b000000)) - (defconstant dynamic-space-start #x48000000) - (defconstant dynamic-space-end #x88000000)) +;;; 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: -(defconstant nil-value (+ static-space-start #xb)) +(def!constant nil-value (+ static-space-start #xb)) ;;;; other miscellaneous constants @@ -174,8 +269,9 @@ error cerror breakpoint - function-end-breakpoint - single-step-breakpoint) + fun-end-breakpoint + single-step-breakpoint + #!+win32 context-restore) ;; HACK: The Win32 exception handling system does wrong things with this. ;;; FIXME: It'd be nice to replace all the DEFENUMs with something like ;;; (WITH-DEF-ENUM (:START 8) ;;; (DEF-ENUM HALT-TRAP) @@ -191,8 +287,8 @@ (defenum (:prefix trace-table-) normal call-site - function-prologue - function-epilogue) + fun-prologue + fun-epilogue) ;;;; static symbols @@ -208,92 +304,49 @@ ;;; Note these spaces grow from low to high addresses. (defvar *allocation-pointer*) (defvar *binding-stack-pointer*) -(defvar *x86-cgc-active-p*) ; FIXME: Document this. -(defvar *static-blue-bag* nil) -;;; FIXME: *!INITIAL-FDEFN-OBJECTS* and !COLD-INIT probably don't need -;;; to be in the static symbols table any more. Also, if -;;; *INTERNAL-GC-TRIGGER* really is not used, we can punt it. (defparameter *static-symbols* - '(t - - ;; The C startup code must fill these in. - *posix-argv* - sb!impl::*!initial-fdefn-objects* - - ;; functions that the C code needs to call - sb!impl::!cold-init - sb!impl::maybe-gc - sb!kernel::internal-error - sb!di::handle-breakpoint - sb!impl::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 - sb!impl::*current-catch-block* - sb!impl::*current-unwind-protect-block* - sb!c::*eval-stack-top* - sb!vm::*alien-stack* - - ;; interrupt handling - sb!impl::*pseudo-atomic-atomic* - sb!impl::*pseudo-atomic-interrupted* - sb!unix::*interrupts-enabled* - sb!unix::*interrupt-pending* - sb!impl::*free-interrupt-context-index* - - sb!vm::*allocation-pointer* - sb!vm::*binding-stack-pointer* - sb!vm::*internal-gc-trigger* ; Not used. - - ;; the floating point constants - sb!vm::*fp-constant-0d0* - sb!vm::*fp-constant-1d0* - sb!vm::*fp-constant-0s0* - sb!vm::*fp-constant-1s0* - ;; The following are all long-floats. - sb!vm::*fp-constant-0l0* - sb!vm::*fp-constant-1l0* - sb!vm::*fp-constant-pi* - sb!vm::*fp-constant-l2t* - sb!vm::*fp-constant-l2e* - sb!vm::*fp-constant-lg2* - sb!vm::*fp-constant-ln2* - - ;; used by gencgc - sb!vm::*scavenge-read-only-space* - - ;; The ..SLOT-UNBOUND.. symbol is static in order to optimise the - ;; common slot unbound check. - sb!pcl::..slot-unbound.. - - ;; spare symbols - sb!vm::spare-10 - sb!vm::spare-9 - sb!vm::spare-8 - sb!vm::spare-7 - sb!vm::spare-6 - sb!vm::spare-5 - sb!vm::spare-4 - sb!vm::spare-3 - sb!vm::spare-2 - sb!vm::spare-1 - - ;; used by cgc - sb!vm::*x86-cgc-active-p* - sb!vm::*static-blue-bag* ; must be last or change C code - )) - -(defparameter *static-functions* + (append + *common-static-symbols* + *c-callable-static-symbols* + '(*alien-stack* + + ;; interrupt handling + *pseudo-atomic-bits* + #!+sb-thread *stop-for-gc-pending* + #!+sb-thread *free-tls-index* + #!+sb-thread *tls-index-lock* + + *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* + + ;; 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 sb!kernel:two-arg-+ sb!kernel:two-arg--