054b9c87e1
This takes literal integers, not expressions, because each machine defines its own valu_t for expressions, but valu_t can be too narrow for an 8-byte integer, and I don't want to change all the machines to use a wider valu_t. Instead, change how the assembler parses literal integers. Remove the NUMBER token and add a NUMBER8 token for an int64_t. The new .data8 pseudo emits all 8 bytes of the int64_t; expressions narrow the int64_t to a valu_t. Don't add any checks for integer overflow; expressions and .data* pseudos continue to ignore overflow when a number is too wide. This commit requires int64_t and uint64_t in the C compiler to build the assembler. The ACK's own C compiler doesn't have these. For the assembler's temporary file, add NUMBER4 to store 4-byte integers. NUMBER4 acts like NUMBER[0-3] and only stores a non-negative integer. Each negative integer now takes 8 bytes (up from 4) in the temporary file. Move the `\fI` and `\fP` in the uni_ass(6) manual, so the square brackets in `thing [, thing]*` are not italic. This looks nicer in my terminal, where italic text is underlined.
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/* $Id$ */
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* @(#)comm3.c 1.1 */
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/*
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* storage allocation for variables
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*/
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#include "comm0.h"
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#define extern /* empty, to force storage allocation */
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#include "comm1.h"
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#undef extern
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struct outhead outhead = {
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O_MAGIC, O_STAMP, 0
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};
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#include "y.tab.h"
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item_t keytab[] = {
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{0, EXTERN, 0, ".define"},
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{0, EXTERN, 0, ".extern"},
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{0, DOT, 0, "."},
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{0, DATA, RELO1, ".data1"},
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{0, DATA, RELO2, ".data2"},
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{0, DATA, RELO4, ".data4"},
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{0, DATA8, 0, ".data8"},
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{0, DATAF, 4, ".dataf4"},
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{0, DATAF, 8, ".dataf8"},
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{0, ASCII, 0, ".ascii"},
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{0, ASCII, 1, ".asciz"},
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{0, ALIGN, 0, ".align"},
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{0, ASSERT, 0, ".assert"},
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{0, SPACE, 0, ".space"},
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{0, COMMON, 0, ".comm"},
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{0, SECTION, 0, ".sect"},
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{0, BASE, 0, ".base"},
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{0, SYMB, 0, ".symb"},
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{0, SYMD, 0, ".symd"},
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{0, LINE, 0, ".line"},
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{0, FILe, 0, ".file"},
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#ifdef LISTING
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{0, LIST, 0, ".nolist"},
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{0, LIST, 1, ".list"},
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#endif
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#include "mach3.c"
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{0, 0, 0, 0}
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};
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