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a08b3d40f8
* libguile/vm-engine.c (bv-s8-ref, bv-s16-ref, bv-s32-ref, bv-s64-ref): Unbox index and return unboxed S32 value. (bv-s8-set!, bv-s16-set!, bv-s32-set!, bv-s64-set!): Unbox index and take unboxed S32 value. (bv-u8-ref, bv-u16-ref, bv-u32-ref, bv-u64-ref) (bv-s8-set!, bv-s16-set!, bv-s32-set!, bv-s64-set!): Likewise, but with unsigned values. (bv-f32-ref, bv-f32-set!, bv-f64-ref, bv-f64-set!): Use memcpy to access the value so we don't have to think about alignment. GCC will inline this to a single instruction on architectures that support unaligned access. * libguile/vm.c (vm_error_out_of_range_uint64) (vm_error_out_of_range_int64): New helpers. * module/language/cps/slot-allocation.scm (compute-var-representations): All bytevector ref operations produce untagged values. * module/language/cps/types.scm (define-bytevector-accessors): Update for bytevector untagged indices and values. * module/language/cps/utils.scm (compute-constant-values): Fix s64 case. * module/language/tree-il/compile-cps.scm (convert): Box results of all bytevector accesses, and unbox incoming indices and values.
104 lines
3.1 KiB
Scheme
104 lines
3.1 KiB
Scheme
;;; Bytecode
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;; Copyright (C) 2013 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (language bytecode)
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#:use-module (ice-9 match)
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#:use-module ((srfi srfi-1) #:select (fold))
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#:export (instruction-list
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instruction-arity
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builtin-name->index
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builtin-index->name))
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(load-extension (string-append "libguile-" (effective-version))
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"scm_init_instructions")
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(load-extension (string-append "libguile-" (effective-version))
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"scm_init_vm_builtins")
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(define (compute-instruction-arity name args)
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(define (first-word-arity word)
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(case word
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((X32) 0)
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((X8_S24) 1)
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((X8_F24) 1)
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((X8_C24) 1)
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((X8_L24) 1)
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((X8_S8_I16) 2)
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((X8_S12_S12) 2)
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((X8_S12_C12) 2)
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((X8_C12_C12) 2)
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((X8_F12_F12) 2)
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((X8_S8_S8_S8) 3)
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((X8_S8_S8_C8) 3)
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((X8_S8_C8_S8) 3)))
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(define (tail-word-arity word)
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(case word
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((C32) 1)
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((I32) 1)
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((A32 AU32 AS32 AF32) 1)
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((B32 BF32 BS32 BU32) 0)
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((N32) 1)
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((R32) 1)
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((L32) 1)
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((LO32) 1)
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((C8_C24) 2)
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((B1_C7_L24) 3)
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((B1_X7_S24) 2)
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((B1_X7_F24) 2)
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((B1_X7_C24) 2)
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((B1_X7_L24) 2)
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((B1_X31) 1)
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((X8_S24) 1)
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((X8_F24) 1)
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((X8_C24) 1)
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((X8_L24) 1)))
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(match args
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((arg0 . args)
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(fold (lambda (arg arity)
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(+ (tail-word-arity arg) arity))
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(first-word-arity arg0)
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args))))
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(define *macro-instruction-arities*
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'((cache-current-module! . (0 . 2))
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(cached-toplevel-box . (1 . 3))
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(cached-module-box . (1 . 4))))
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(define (compute-instruction-arities)
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(let ((table (make-hash-table)))
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(for-each
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(match-lambda
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;; Put special cases here.
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((name op '! . args)
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(hashq-set! table name
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(cons 0 (compute-instruction-arity name args))))
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((name op '<- . args)
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(hashq-set! table name
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(cons 1 (1- (compute-instruction-arity name args))))))
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(instruction-list))
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(for-each (match-lambda
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((name . arity)
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(hashq-set! table name arity)))
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*macro-instruction-arities*)
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table))
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(define *instruction-arities* (delay (compute-instruction-arities)))
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(define (instruction-arity name)
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(hashq-ref (force *instruction-arities*) name))
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