274 lines
8.1 KiB
Plaintext
274 lines
8.1 KiB
Plaintext
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$! File: generate_vax_transfer.com
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$!
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$! File to generate and compile the VAX transfer vectors from reading in the
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$! Alpha/Itanium gnv_libcurl_symbols.opt file.
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$!
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$! This procedure patches the VAX Macro32 assembler to be case sensitive
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$! and then compiles the generated
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$!
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$! The output of this procedure is:
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$! gnv_libcurl_xfer.mar_exact
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$! gnv_libcurl_xfer.obj
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$! gnv_libcurl_xfer.opt
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$! macro32_exactcase.exe
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$!
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$! Copyright (C) John Malmberg
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$!
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$! Permission to use, copy, modify, and/or distribute this software for any
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$! purpose with or without fee is hereby granted, provided that the above
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$! copyright notice and this permission notice appear in all copies.
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$!
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$! THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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$! WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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$! MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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$! ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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$! WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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$! ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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$! OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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$!
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$! SPDX-License-Identifier: ISC
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$!
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$!============================================================================
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$!
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$! Save this so we can get back.
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$ default_dir = f$environment("default")
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$!
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$ on warning then goto all_exit
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$!
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$! Want hard tabs in the generated file.
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$ tab[0,8] = 9
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$!
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$! This procedure is used on VAX only
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$ if (f$getsyi("HW_MODEL") .ge. 1024)
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$ then
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$ write sys$output "This procedure is only used on VAX."
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$ goto all_exit
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$ endif
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$!
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$!
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$! Get the libcurl version to generate the ident string.
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$! ident string is max of 31 characters.
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$!
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$ ident_string = "unknown"
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$ open/read cver [-.-.include.curl]curlver.h
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$cver_loop:
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$ read/end=cver_loop_end cver line_in
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$ line_in = f$edit(line_in, "COMPRESS,TRIM")
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$ if line_in .eqs. "" then goto cver_loop
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$ code = f$extract(0, 1, line_in)
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$ if code .nes. "#" then goto cver_loop
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$ directive = f$element(0, " ", line_in)
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$ if directive .nes. "#define" then goto cver_loop
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$ name = f$element(1, " ", line_in)
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$ if name .nes. "LIBCURL_VERSION" then goto cver_loop
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$ ident_string = f$element(2, " ", line_in) - "" - ""
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$cver_loop_end:
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$ close cver
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$!
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$ open/read aopt gnv_libcurl_symbols.opt
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$!
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$! Write out the header
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$ gosub do_header
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$!
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$ open/append vopt gnv_libcurl_xfer.mar_exact
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$ write vopt tab,".IDENT /", ident_string, "/"
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$!
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$ write vopt tab, ".PSECT LIBCURL_XFERVECTORS -"
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$ write vopt tab,tab,tab, "PIC,USR,CON,REL,GBL,SHR,EXE,RD,NOWRT,QUAD"
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$ write vopt ""
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$ write vopt tab, "SPARE", tab, "; never delete this spare"
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$ write vopt ";"
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$ write vopt ";", tab, "Exact case and upper case transfer vectors"
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$!
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$ alias_count = 0
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$vector_loop:
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$!
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$! Read in symbol_vector
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$!
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$ read/end=vector_loop_end aopt line_in
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$ line = f$edit(line_in, "UNCOMMENT,COMPRESS,TRIM")
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$ if line .eqs. "" then goto vector_loop
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$!
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$ line_u = f$edit(line, "UPCASE")
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$ key = f$element(0, "=", line_u)
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$ if (key .eqs. "SYMBOL_VECTOR")
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$ then
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$ symbol_string = f$element(1, "=", line) - "("
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$ symbol_type = f$element(2, "=", line_u) - ")"
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$ symbol_name = f$element(1, "/", symbol_string)
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$ if symbol_type .nes. "PROCEDURE"
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$ then
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$ write sys$output "%CURLBUILD-W-NOTPROC, " + -
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$ "This procedure can only handle procedure vectors"
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$ write sys$output -
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"Data vectors require manual construction for which this procedure or"
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$ write sys$output -
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"the shared library needs to be updated to resolve."
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$ write sys$output -
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"the preferred solution is to have a procedure return the address of the "
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$ write sys$output -
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"the variable instead of having a variable, as if the size of the variable "
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write sys$output -
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"changes, the symbol vector is no longer backwards compatible."
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$ endif
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$ if (symbol_name .eqs. "/")
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$ then
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$ symbol_name = symbol_string
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$ write vopt tab, symbol_type, tab, symbol_name
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$ else
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$ alias_count = alias_count + 1
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$ symbol_alias = f$element(0, "/", symbol_string)
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$ write vopt -
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tab, "''symbol_type_U", tab, symbol_name, tab, symbol_alias
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$ endif
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$ endif
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$ goto vector_loop
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$vector_loop_end:
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$!
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$! End of pass one, second pass needed if aliases exist
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$ close aopt
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$!
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$ if alias_count .eq. 0 then goto finish_file
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$!
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$! Start pass 2, write stub routine header
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$!
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$ open/read aopt gnv_libcurl_symbols.opt
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$!
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$alias_loop:
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$!
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$! Read in symbol_vector
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$!
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$ read/end=alias_loop_end aopt line_in
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$ line = f$edit(line_in, "UNCOMMENT,COMPRESS,TRIM")
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$ if line .eqs. "" then goto alias_loop
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$!
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$ line_u = f$edit(line, "UPCASE")
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$ key = f$element(0, "=", line_u)
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$ if (key .eqs. "SYMBOL_VECTOR")
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$ then
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$ symbol_string = f$element(1, "=", line) - "("
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$ symbol_type = f$element(2, "=", line_u) - ")"
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$ symbol_name = f$element(1, "/", symbol_string)
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$ if (symbol_name .eqs. "/")
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$ then
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$ symbol_name = symbol_string
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$ else
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$ alias_count = alias_count + 1
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$ symbol_alias = f$element(0, "/", symbol_string)
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$ write vopt tab, ".ENTRY", tab, symbol_alias, ", ^M<>"
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$ endif
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$ endif
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$ goto alias_loop
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$! read in symbol_vector
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$! if not alias, then loop
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$! write out subroutine name
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$!
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$alias_loop_end:
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$!
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$ write vopt tab, "MOVL #1, R0"
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$ write vopt tab, "RET"
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$!
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$finish_file:
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$!
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$ write vopt ""
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$ write vopt tab, ".END"
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$!
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$ close aopt
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$ close vopt
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$!
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$! Patch the Macro32 compiler
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$!----------------------------
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$ patched_macro = "sys$disk:[]macro32_exactcase.exe"
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$ if f$search(patched_macro) .eqs. ""
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$ then
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$ copy sys$system:macro32.exe 'patched_macro'
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$ patch @macro32_exactcase.patch
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$ endif
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$ define/user macro32 'patched_macro'
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$ macro/object=gnv_libcurl_xfer.obj gnv_libcurl_xfer.mar_exact
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$!
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$! Create the option file for linking the shared image.
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$ create gnv_libcurl_xfer.opt
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$ open/append lco gnv_libcurl_xfer.opt
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$ write lco "gsmatch=lequal,1,1"
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$ write lco "cluster=transfer_vector,,,''default_dir'gnv_libcurl_xfer"
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$ write lco "collect=libcurl_global, libcurl_xfervectors"
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$ close lco
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$!
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$!
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$ goto all_exit
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$!
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$! Process the header
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$do_header:
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$!
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$! Force the mode of the file to same as text editor generated.
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$ create gnv_libcurl_xfer.mar_exact
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$deck
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; File: gnv_libcurl_xfer.mar_exact
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;
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; VAX transfer vectors
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;
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; This needs to be compiled with a specialized patch on Macro32 to make it
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; preserve the case of symbols instead of converting it to uppercase.
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;
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; This patched Macro32 requires all directives to be in upper case.
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;
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; There are three sets of symbols for transfer vectors here.
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;
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; The first for upper case which matches the tradition method of generating
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; VAX transfer vectors.
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;
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; The second is the exact case for compatibility with open source C programs
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; that expect exact case symbols in images. These are separated because a
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; previous kit had only upper case symbols.
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;
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; The third is the routine stub that is used to resolve part of the upper
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; case transfer vectors, with exact case entry symbols.
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;
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; When you add routines, you need to add them after the second set of transfer
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; vectors for both upper and exact case, and then additional entry points
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; in upper case added to stub routines.
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;
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;*************************************************************************
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.TITLE libcurl_xfer - Transfer vector for libcurl
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.DISABLE GLOBAL
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;
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; Macro to generate a transfer vector entry
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;
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.MACRO PROCEDURE NAME
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.EXTRN 'NAME
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.ALIGN QUAD
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.TRANSFER 'NAME
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.MASK 'NAME
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JMP 'NAME+2
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.ENDM
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.MACRO PROCEDUREU NAME NAMEU
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.EXTRN 'NAME
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.ALIGN QUAD
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.TRANSFER 'NAMEU
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.MASK 'NAME
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JMP 'NAME+2
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.ENDM
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;
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;
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; Macro to reserve a spare entry.
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;
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.MACRO SPARE
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.ALIGN QUAD
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.ALIGN QUAD
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.QUAD 0
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.ENDM
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$EOD
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$!
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$!
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$ return
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$!
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$all_exit:
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$set def 'default_dir'
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$exit '$status'
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