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-GC on EWS4800
--------------
-
-1. About EWS4800
-   EWS4800 is 32bit/64bit workstation.
-
-     Vender: NEC Corporation
-     OS: UX/4800 R9.* - R13.* (SystemV R4.2)
-     CPU: R4000, R4400, R10000 (MIPS)
-
-2. Compiler
-
- 32bit:
-   Use ANSI C compiler.
-     CC = /usr/abiccs/bin/cc
-
- 64bit:
-   Use 64bit ANSI C compiler.
-     CC = /usr/ccs64/bin/cc
-     AR = /usr/ccs64/bin/ar
-
-3. ELF file format
-   *** Caution: The following infomation is empirical. ***
-
- 32bit:
-   ELF file has an unique format. (See a.out(4) and end(3C).)
-
-     &_start
-        :      text segment
-     &etext
-     DATASTART
-        :      data segment (initialized)
-     &edata
-     DATASTART2
-        :      data segment (uninitialized)
-     &end
-
-   Here, DATASTART and DATASTART2 are macros of GC, and are defined as
-   the following equations. (See include/private/gcconfig.h.)
-   The algorithm for DATASTART is similar with the function
-   GC_SysVGetDataStart() in os_dep.c.
-
-     DATASTART  = ((&etext + 0x3ffff) & ~0x3ffff) + (&etext & 0xffff)
-
-    Dynamically linked:
-     DATASTART2 = (&_gp + 0x8000 + 0x3ffff) & ~0x3ffff
-
-    Statically linked:
-     DATASTART2 = &edata
-
-   GC has to check addresses both between DATASTART and &edata, and
-   between DATASTART2 and &end. If a program accesses between &etext
-   and DATASTART, or between &edata and DATASTART2, the segmentation
-   error occurs and the program stops.
-
-   If a program is statically linked, there is not a gap between
-   &edata and DATASTART2. The global symbol &_DYNAMIC_LINKING is used
-   for the detection.
-
- 64bit:
-   ELF file has a simple format. (See end(3C).)
-
-     _ftext
-        :      text segment
-     _etext
-     _fdata = DATASTART
-        :      data segment (initialized)
-     _edata
-     _fbss
-        :      data segment (uninitialized)
-     _end = DATAEND
-
---
-Hironori SAKAMOTO <hsaka@mth.biglobe.ne.jp>
-