X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Fparms.lisp;h=25d8d122df32ad93837bba810fd05c70832ac38f;hb=906ecd4ef2d10aca23e1081f03c13fe2f932ed89;hp=60d9d83b0a5ca3288b90e004ab7b25423b5efa9f;hpb=78fa16bf55be44cc16845be84d98023e83fb14bc;p=sbcl.git diff --git a/src/compiler/x86-64/parms.lisp b/src/compiler/x86-64/parms.lisp index 60d9d83..25d8d12 100644 --- a/src/compiler/x86-64/parms.lisp +++ b/src/compiler/x86-64/parms.lisp @@ -35,13 +35,19 @@ ;;; addressable object (def!constant n-byte-bits 8) +;;; The minimum immediate offset in a memory-referencing instruction. +(def!constant minimum-immediate-offset (- (expt 2 31))) + +;;; The maximum immediate offset in a memory-referencing instruction. +(def!constant maximum-immediate-offset (1- (expt 2 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. -(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: @@ -60,60 +66,58 @@ (def!constant double-float-hidden-bit (ash 1 20)) (def!constant double-float-trapping-nan-bit (ash 1 19)) -(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) -(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)) - (def!constant single-float-digits (+ (byte-size single-float-significand-byte) 1)) (def!constant double-float-digits (+ (byte-size double-float-significand-byte) 32 1)) -(def!constant long-float-digits - (+ (byte-size long-float-significand-byte) 32 1)) - -;;; pfw -- from i486 microprocessor programmer's reference manual -(def!constant float-invalid-trap-bit (ash 1 0)) +;;; from AMD64 Architecture manual +(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) -(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) -(def!constant float-fast-bit 0) ; no fast mode on x86 +(defconstant-eqx float-rounding-mode (byte 2 13) #'equalp) +(defconstant-eqx float-sticky-bits (byte 6 0) #'equalp) +(defconstant-eqx float-traps-byte (byte 6 7) #'equalp) +(defconstant-eqx float-exceptions-byte (byte 6 0) #'equalp) +(def!constant float-fast-bit 0) ; no fast mode on x86-64 ;;;; description of the target address space ;;; where to put the different spaces. -(def!constant read-only-space-start #x20000000) -(def!constant read-only-space-end #x27ff0000) +;;; Currently the read-only and static spaces must be located in low +;;; memory (certainly under the 4GB limit, very probably under 2GB +;;; limit). This is due to the inability of using immediate values of +;;; more than 32 bits (31 bits if you take sign extension into +;;; account) in any other instructions except MOV. Removing this limit +;;; would be possible, but probably not worth the time and code bloat +;;; it would cause. -- JES, 2005-12-11 -(def!constant static-space-start #x40000000) -(def!constant static-space-end #x47fff000) +(progn + (def!constant read-only-space-start #x20000000) + (def!constant read-only-space-end #x200ff000) -(def!constant dynamic-space-start #x1000000000) -(def!constant dynamic-space-end #x11ffff0000) + (def!constant static-space-start #x20100000) + (def!constant static-space-end #x201ff000) -(def!constant linkage-table-space-start #x60000000) -(def!constant linkage-table-space-end #x63fff000) + (def!constant dynamic-space-start #x1000000000) + (def!constant dynamic-space-end #x11ffff0000) + + (def!constant linkage-table-space-start #x20200000) + (def!constant linkage-table-space-end #x202ff000) + + (def!constant linkage-table-entry-size 16)) -(def!constant linkage-table-entry-size 16) ;;;; other miscellaneous constants @@ -124,7 +128,8 @@ cerror breakpoint fun-end-breakpoint - single-step-breakpoint) + single-step-around + single-step-before) ;;; FIXME: It'd be nice to replace all the DEFENUMs with something like ;;; (WITH-DEF-ENUM (:START 8) ;;; (DEF-ENUM HALT-TRAP) @@ -133,7 +138,7 @@ ;;; for the benefit of anyone doing a lexical search for definitions ;;; of these symbols. -(defenum (:prefix object-not- :suffix -trap :start 16) +(defenum (:prefix object-not- :suffix -trap :start 24) list instance) @@ -159,75 +164,46 @@ (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!kernel::undefined-alien-error - sb!di::handle-breakpoint - fdefinition-object - #!+sb-thread sb!thread::handle-thread-exit - - ;; 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* - - *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* + + #!+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* + + ;; 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* + + ;; 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. + ;; + ;; FIXME II: if it doesn't make sense, why is this X86-ish only? + sb!pcl::..slot-unbound..))) (defparameter *static-funs* '(length @@ -245,9 +221,3 @@ sb!kernel:two-arg-xor sb!kernel:two-arg-gcd sb!kernel:two-arg-lcm)) - -;;;; stuff added by jrd - -;;; FIXME: Is this used? Delete it or document it. -;;; cf the sparc PARMS.LISP -(defparameter *assembly-unit-length* 8)