cc428a8bbc
Update the test to use both the system printf() and the U-Boot one, in the same program. This provides verification that symbol-renaming is working as expected. Signed-off-by: Simon Glass <sjg@chromium.org>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Test application for U-Boot shared library
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*
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* This demonstrates linking against libu-boot.so and libu-boot.a
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*
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* Copyright 2025 Canonical Ltd.
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* Written by Simon Glass <simon.glass@canonical.com>
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*/
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/* Use system headers, not U-Boot headers */
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#include <stdio.h>
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#include <string.h>
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#include <os.h>
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#include <u-boot-api.h>
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#include <u-boot-lib.h>
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/* Runtime detection of link type using /proc/self/maps */
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static const char *detect_link_type(void)
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{
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char line[512];
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int fd;
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int found_libuboot = 0;
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/* Open /proc/self/maps to check loaded libraries */
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fd = os_open("/proc/self/maps", 0);
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if (fd < 0)
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return "unable to detect linkage";
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/* Read line by line to avoid boundary issues */
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while (os_fgets(line, sizeof(line), fd)) {
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if (strstr(line, "libu-boot.so")) {
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found_libuboot = 1;
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break;
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}
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}
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os_close(fd);
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/* Return appropriate message based on what we found */
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if (found_libuboot)
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return "dynamically linked (uses libu-boot.so)";
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else
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return "statically linked (uses libu-boot.a)";
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}
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int main(int argc, char *argv[])
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{
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int ret;
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printf("Uses libc printf before ulib_init\n");
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ret = ulib_init(argv[0]);
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if (ret)
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return 1;
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ub_printf("Hello, world from ub_printf\n");
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ub_printf("\n- U-Boot\n");
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printf("another printf()\n");
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ub_printf("\nPS: This program is %s\n", detect_link_type());
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return ret;
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}
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