diff options
Diffstat (limited to 'nuttx/tools/mksyscall.c')
| -rw-r--r-- | nuttx/tools/mksyscall.c | 686 |
1 files changed, 0 insertions, 686 deletions
diff --git a/nuttx/tools/mksyscall.c b/nuttx/tools/mksyscall.c deleted file mode 100644 index 1d172a2a1..000000000 --- a/nuttx/tools/mksyscall.c +++ /dev/null @@ -1,686 +0,0 @@ -/**************************************************************************** - * tools/mksyscall.c - * - * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include "csvparser.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -static bool g_inline; -static FILE *g_stubstream; - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -static bool is_vararg(const char *type, int ndx, int nparms) -{ - if (strcmp(type,"...") == 0) - { - if (ndx != (nparms-1)) - { - fprintf(stderr, "%d: ... is not the last in the argument list\n", g_lineno); - exit(11); - } - else if (nparms < 2) - { - fprintf(stderr, "%d: Need one parameter before ...\n", g_lineno); - exit(14); - } - - return true; - } - - return false; -} - -static bool is_union(const char *type) -{ - return (strncmp(type,"union", 5) == 0); -} - -static const char *check_funcptr(const char *type) -{ - const char *str = strstr(type,"(*)"); - if (str) - { - return str + 2; - } - return NULL; -} - -static const char *check_array(const char *type) -{ - const char *str = strchr(type, '['); - if (str) - { - return str; - } - return NULL; -} - -static void print_formalparm(FILE *stream, const char *argtype, int parmno) -{ - const char *part2; - int len; - - /* Function pointers and array formal parameter types are a little more work */ - - if ((part2 = check_funcptr(argtype)) != NULL || (part2 = check_array(argtype)) != NULL) - { - len = part2 - argtype; - (void)fwrite(argtype, 1, len, stream); - fprintf(stream, "parm%d%s", parmno, part2); - } - else - { - fprintf(stream, "%s parm%d", argtype, parmno); - } -} - -static void get_formalparmtype(const char *arg, char *formal) -{ - /* The formal parm type is a pointer to everything up to the first'|' (or - * the end of the string if there is no '|' in the type description). - */ - - while (*arg != '|' && *arg != '\0') - { - *formal++ = *arg++; - } - *formal = '\0'; -} - -static void get_actualparmtype(const char *arg, char *actual) -{ - const char *pstart = strchr(arg,'|'); - if (pstart) - { - /* The actual parameter type starts after the '|' */ - - pstart++; - } - else - { - /* The actual parameter is the same as the formal parameter - * at starts at the beginning of the type string. - */ - - pstart = arg; - } - - /* The actual parm type is a pointer to everything up to the next '|' (or - * the end of the string if there is no '|' in the type description). - */ - - while (*pstart != '|' && *pstart != '\0') - { - *actual++ = *pstart++; - } - *actual = '\0'; -} - -static void get_fieldname(const char *arg, char *fieldname) -{ - char *pactual = strchr(arg,'|'); - char *pstart; - - if (pactual) - { - /* The actual parameter type starts after the '|' */ - - pactual++; - pstart = strchr(pactual,'|'); - if (pstart) - { - /* The fieldname is everything past the second '|' to the end of the string */ - - pstart++; - strncpy(fieldname, pstart, MAX_PARMSIZE); - return; - } - } - - fprintf(stderr, "%d: Missing union fieldname: %s\n", g_lineno, arg); - exit(15); -} - -static FILE *open_proxy(void) -{ - char filename[MAX_PARMSIZE+10]; - FILE *stream; - - snprintf(filename, MAX_PARMSIZE+9, "PROXY_%s.c", g_parm[NAME_INDEX]); - filename[MAX_PARMSIZE+9] = '\0'; - - stream = fopen(filename, "w"); - if (stream == NULL) - { - fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno)); - exit(10); - } - return stream; -} - -static void generate_proxy(int nparms) -{ - FILE *stream = open_proxy(); - char formal[MAX_PARMSIZE]; - char fieldname[MAX_PARMSIZE]; - bool bvarargs = false; - int nformal; - int nactual; - int i; - - /* Generate "up-front" information, include correct header files */ - - fprintf(stream, "/* Auto-generated %s proxy file -- do not edit */\n\n", g_parm[NAME_INDEX]); - fprintf(stream, "#include <nuttx/config.h>\n"); - - /* Does this function have a variable number of parameters? If so then the - * final parameter type will be encoded as "..." - */ - - if (is_vararg(g_parm[PARM1_INDEX+nparms-1], nparms-1, nparms)) - { - nformal = nparms-1; - bvarargs = true; - fprintf(stream, "#include <stdarg.h>\n"); - } - else - { - nformal = nparms; - } - - fprintf(stream, "#include <%s>\n", g_parm[HEADER_INDEX]); - fprintf(stream, "#include <syscall.h>\n\n"); - - if (g_parm[COND_INDEX][0] != '\0') - { - fprintf(stream, "#if %s\n\n", g_parm[COND_INDEX]); - } - - /* Generate the function definition that matches standard function prototype */ - - fprintf(stream, "%s %s(", g_parm[RETTYPE_INDEX], g_parm[NAME_INDEX]); - - /* Generate the formal parameter list */ - - if (nformal <= 0) - { - fprintf(stream, "void"); - } - else - { - for (i = 0; i < nformal; i++) - { - /* The formal and actual parameter types may be encoded.. extra the - * formal parameter type. - */ - - get_formalparmtype(g_parm[PARM1_INDEX+i], formal); - - /* Arguments after the first must be separated from the preceding - * parameter with a comma. - */ - - if (i > 0) - { - fprintf(stream, ", "); - } - print_formalparm(stream, formal, i+1); - } - } - - /* Handle the end of the formal parameter list */ - - if (bvarargs) - { - fprintf(stream, ", ...)\n{\n"); - - /* Get parm variables .. some from the parameter list and others from - * the varargs. - */ - - if (nparms < 7) - { - fprintf(stream, " va_list ap;\n"); - for (i = nparms; i < 7; i++) - { - fprintf(stream, " uintptr_t parm%d;\n", i); - } - - fprintf(stream, "\n va_start(ap, parm%d);\n", nparms-1); - for (i = nparms; i < 7; i++) - { - fprintf(stream, " parm%d = va_arg(ap, uintptr_t);\n", i); - } - fprintf(stream, " va_end(ap);\n\n"); - } - } - else - { - fprintf(stream, ")\n{\n"); - } - - /* Generate the system call. Functions that do not return or return void - * are special cases. - */ - - nactual = bvarargs ? 6 : nparms; - if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0) - { - fprintf(stream, " (void)sys_call%d(", nactual); - } - else - { - fprintf(stream, " return (%s)sys_call%d(", g_parm[RETTYPE_INDEX], nactual); - } - - /* Create the parameter list with the matching types. The first parameter - * is always the syscall number. - */ - - fprintf(stream, "(unsigned int)SYS_%s", g_parm[NAME_INDEX]); - - for (i = 0; i < nactual; i++) - { - /* Is the parameter a union member */ - - if (i < nparms && is_union(g_parm[PARM1_INDEX+i])) - { - /* Then we will have to pick a field name that can be cast to a - * uintptr_t. There probably should be some error handling here - * to catch the case where the fieldname was not supplied. - */ - - get_fieldname(g_parm[PARM1_INDEX+i], fieldname); - fprintf(stream, ", (uintptr_t)parm%d.%s", i+1, fieldname); - } - else - { - fprintf(stream, ", (uintptr_t)parm%d", i+1); - } - } - - /* Handle the tail end of the function. */ - - fprintf(stream, ");\n}\n\n"); - if (g_parm[COND_INDEX][0] != '\0') - { - fprintf(stream, "#endif /* %s */\n", g_parm[COND_INDEX]); - } - - fclose(stream); -} - -static FILE *open_stub(void) -{ - if (g_inline) - { - if (!g_stubstream) - { - g_stubstream = fopen("STUB.h", "w"); - if (g_stubstream == NULL) - { - fprintf(stderr, "Failed to open STUB.h: %s\n", strerror(errno)); - exit(9); - } - fprintf(g_stubstream, "/* Autogenerated STUB header file */\n\n"); - fprintf(g_stubstream, "#ifndef __STUB_H\n"); - fprintf(g_stubstream, "#define __STUB_H\n\n"); - } - - return g_stubstream; - } - else - { - char filename[MAX_PARMSIZE+8]; - FILE *stream; - - snprintf(filename, MAX_PARMSIZE+7, "STUB_%s.c", g_parm[NAME_INDEX]); - filename[MAX_PARMSIZE+7] = '\0'; - - stream = fopen(filename, "w"); - if (stream == NULL) - { - fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno)); - exit(9); - } - return stream; - } -} - -static void stub_close(FILE *stream) -{ - if (!g_inline) - { - fclose(stream); - } -} - -static void generate_stub(int nparms) -{ - FILE *stream = open_stub(); - char formal[MAX_PARMSIZE]; - char actual[MAX_PARMSIZE]; - int i; - int j; - - /* Generate "up-front" information, include correct header files */ - - fprintf(stream, "/* Auto-generated %s stub file -- do not edit */\n\n", g_parm[0]); - fprintf(stream, "#include <nuttx/config.h>\n"); - fprintf(stream, "#include <stdint.h>\n"); - fprintf(stream, "#include <%s>\n\n", g_parm[HEADER_INDEX]); - - if (g_parm[COND_INDEX][0] != '\0') - { - fprintf(stream, "#if %s\n\n", g_parm[COND_INDEX]); - } - - /* Generate the function definition that matches standard function prototype */ - - if (g_inline) - { - fprintf(stream, "static inline "); - } - fprintf(stream, "uintptr_t STUB_%s(", g_parm[NAME_INDEX]); - - /* Generate the formal parameter list. A function received no parameters is a special case. */ - - if (nparms <= 0) - { - fprintf(stream, "void"); - } - else - { - for (i = 0; i < nparms; i++) - { - /* Treat the first argument in the list differently from the others.. - * It does not need a comma before it. - */ - - if (i > 0) - { - /* Check for a variable number of arguments */ - - if (is_vararg(g_parm[PARM1_INDEX+i], i, nparms)) - { - /* Always receive six arguments in this case */ - - for (j = i+1; j <= 6; j++) - { - fprintf(stream, ", uintptr_t parm%d", j); - } - } - else - { - fprintf(stream, ", uintptr_t parm%d", i+1); - } - } - else - { - fprintf(stream, "uintptr_t parm%d", i+1); - } - } - } - fprintf(stream, ")\n{\n"); - - /* Then call the proxied function. Functions that have no return value are - * a special case. - */ - - if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0) - { - fprintf(stream, " %s(", g_parm[NAME_INDEX]); - } - else - { - fprintf(stream, " return (uintptr_t)%s(", g_parm[NAME_INDEX]); - } - - /* The pass all of the system call parameters, casting to the correct type - * as necessary. - */ - - for (i = 0; i < nparms; i++) - { - /* Get the formal type of the parameter, and get the type that we - * actually have to cast to. For example for a formal type like 'int parm[]' - * we have to cast the actual parameter to 'int*'. The worst is a union - * type like 'union sigval' where we have to cast to (union sigval)((FAR void *)parm) - * -- Yech. - */ - - get_formalparmtype(g_parm[PARM1_INDEX+i], formal); - get_actualparmtype(g_parm[PARM1_INDEX+i], actual); - - /* Treat the first argument in the list differently from the others.. - * It does not need a comma before it. - */ - - if (i > 0) - { - /* Check for a variable number of arguments */ - - if (is_vararg(actual, i, nparms)) - { - /* Always pass six arguments */ - - for (j = i+1; j <=6; j++) - { - fprintf(stream, ", parm%d", j); - } - } - else - { - if (is_union(formal)) - { - fprintf(stream, ", (%s)((%s)parm%d)", formal, actual, i+1); - } - else - { - fprintf(stream, ", (%s)parm%d", actual, i+1); - } - } - } - else - { - if (is_union(formal)) - { - fprintf(stream, "(%s)((%s)parm%d)", formal, actual, i+1); - } - else - { - fprintf(stream, "(%s)parm%d",actual, i+1); - } - } - } - - /* Tail end of the function. If the proxied function has no return - * value, just return zero (OK). - */ - - if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0) - { - fprintf(stream, ");\n return 0;\n}\n\n"); - } - else - { - fprintf(stream, ");\n}\n\n"); - } - - if (g_parm[COND_INDEX][0] != '\0') - { - fprintf(stream, "#endif /* %s */\n", g_parm[COND_INDEX]); - } - stub_close(stream); -} - -static void show_usage(const char *progname) -{ - fprintf(stderr, "USAGE: %s [-p|s|i] <CSV file>\n\n", progname); - fprintf(stderr, "Where:\n\n"); - fprintf(stderr, "\t-p : Generate proxies\n"); - fprintf(stderr, "\t-s : Generate stubs\n"); - fprintf(stderr, "\t-i : Generate proxies as static inline functions\n"); - fprintf(stderr, "\t-d : Enable debug output\n"); - exit(1); -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -int main(int argc, char **argv, char **envp) -{ - char *csvpath; - bool proxies = false; - FILE *stream; - char *ptr; - int ch; - - /* Parse command line options */ - - g_debug = false; - g_inline = false; - - while ((ch = getopt(argc, argv, ":dps")) > 0) - { - switch (ch) - { - case 'd' : - g_debug = true; - break; - - case 'p' : - proxies = true; - break; - - case 's' : - proxies = false; - break; - - case 'i' : - g_inline = true; - break; - - case '?' : - fprintf(stderr, "Unrecognized option: %c\n", optopt); - show_usage(argv[0]); - - case ':' : - fprintf(stderr, "Missing option argument, option: %c\n", optopt); - show_usage(argv[0]); - - break; - fprintf(stderr, "Unexpected option: %c\n", ch); - show_usage(argv[0]); - } - } - - if (optind >= argc) - { - fprintf(stderr, "Missing <CSV file>\n"); - show_usage(argv[0]); - } - - csvpath = argv[optind]; - if (++optind < argc) - { - fprintf(stderr, "Unexpected garbage at the end of the line\n"); - show_usage(argv[0]); - } - - /* Open the CSV file */ - - stream= fopen(csvpath, "r"); - if (!stream) - { - fprintf(stderr, "open %s failed: %s\n", csvpath, strerror(errno)); - exit(3); - } - - /* Process each line in the CVS file */ - - while ((ptr = read_line(stream)) != NULL) - { - /* Parse the line from the CVS file */ - - int nargs = parse_csvline(ptr); - if (nargs < PARM1_INDEX) - { - fprintf(stderr, "Only %d arguments found: %s\n", nargs, g_line); - exit(8); - } - - if (proxies) - { - generate_proxy(nargs - PARM1_INDEX); - } - else - { - g_stubstream = NULL; - generate_stub(nargs - PARM1_INDEX); - if (g_stubstream != NULL) - { - fprintf(g_stubstream, "\n#endif /* __STUB_H */\n"); - fclose(g_stubstream); - } - } - } - - /* Close the CSV file */ - - fclose(stream); - return 0; -} |