68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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/*
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* hl_argv.c -- provide _argv().
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*
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* Copyright (c) 2024 Synopsys Inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*
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*/
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#include <stddef.h>
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#include "hl_toolchain.h"
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#include "hl_api.h"
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/* Get buffer length for argv[a] using HL_SYSCALL_ARGV. */
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static __always_inline uint32_t
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_hl_argvlen (int a)
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{
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uint32_t ret = 0;
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volatile __uncached char *p;
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p = _hl_message (HL_SYSCALL_ARGV, "i", (uint32_t) a);
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if (p != NULL)
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ret = _hl_get_ptr_len (p);
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_hl_delete ();
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return ret;
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}
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/* Implements HL_SYSCALL_ARGV. */
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static __always_inline int
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_hl_argv (int a, char *arg)
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{
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int ret = 0;
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volatile __uncached char *p;
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p = _hl_message (HL_SYSCALL_ARGV, "i:s", (uint32_t) a, (char *) arg);
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if (p == NULL)
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ret = -1;
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_hl_delete ();
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return ret;
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}
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/* See arc-main-helper.c. */
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uint32_t
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_argvlen (int a)
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{
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return _hl_argvlen (a);
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}
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/* See arc-main-helper.c. */
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int
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_argv (int a, char *arg)
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{
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return _hl_argv (a, arg);
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}
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