diff options
author | Alex Richardson <alexrichardson@google.com> | 2023-08-03 09:35:03 -0700 |
---|---|---|
committer | Bill McSpadden <bill@riscv.org> | 2023-09-20 13:47:37 -0500 |
commit | 24e3e68acae898b3c2106481005e16a9568b458a (patch) | |
tree | 0c4db6a5057260edbc266d43f9fea3282e0497a7 /c_emulator/riscv_sim.c | |
parent | 664e147d200c98185f573e36fca1a13f9cbdb349 (diff) | |
download | sail-riscv-24e3e68acae898b3c2106481005e16a9568b458a.zip sail-riscv-24e3e68acae898b3c2106481005e16a9568b458a.tar.gz sail-riscv-24e3e68acae898b3c2106481005e16a9568b458a.tar.bz2 |
Allow loading more than one ELF binary
This makes it easier to use a separate M-mode bootloader and kernel
payload (e.g. OpenSBI fw_jump). It also makes it easier to test booting
systems such as FreeBSD without bundling the kernel with the bootloader.
Diffstat (limited to 'c_emulator/riscv_sim.c')
-rw-r--r-- | c_emulator/riscv_sim.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/c_emulator/riscv_sim.c b/c_emulator/riscv_sim.c index 8a0f3ac..8f7f9e1 100644 --- a/c_emulator/riscv_sim.c +++ b/c_emulator/riscv_sim.c @@ -148,12 +148,9 @@ static struct option options[] = { static void print_usage(const char *argv0, int ec) { + fprintf(stdout, "Usage: %s [options] <elf_file> [<elf_file> ...]\n", argv0); #ifdef RVFI_DII - fprintf(stdout, - "Usage: %s [options] <elf_file>\n %s [options] -r <port>\n", - argv0, argv0); -#else - fprintf(stdout, "Usage: %s [options] <elf_file>\n", argv0); + fprintf(stdout, " %s [options] -r <port>\n", argv0); #endif struct option *opt = options; while (opt->name) { @@ -227,8 +224,11 @@ static void read_dtb(const char *path) } /** - * Parses the command line arguments and returns the argv index for the ELF file - * that should be loaded. + * Parses the command line arguments and returns the argv index for the first + * ELF file that should be loaded. As getopt transforms the argv array, all + * argv values following that index are non-options and can be treated as + * additional ELF files that should be loaded into memory (but not scanned + * for the magic tohost/{begin,end}_signature symbols). */ static int process_args(int argc, char **argv) { @@ -411,13 +411,17 @@ void check_elf(bool is32bit) } } } -uint64_t load_sail(char *f) +uint64_t load_sail(char *f, bool main_file) { bool is32bit; uint64_t entry; uint64_t begin_sig, end_sig; load_elf(f, &is32bit, &entry); check_elf(is32bit); + if (!main_file) { + /* Don't scan for test-signature/htif symbols for additional ELF files. */ + return entry; + } fprintf(stdout, "ELF Entry @ 0x%" PRIx64 "\n", entry); /* locate htif ports */ if (lookup_sym(f, "tohost", &rv_htif_tohost) < 0) { @@ -1049,7 +1053,7 @@ int main(int argc, char **argv) preinit_sail(); int files_start = process_args(argc, argv); - char *file = argv[files_start]; + char *initial_elf_file = argv[files_start]; init_logs(); if (gettimeofday(&init_start, NULL) < 0) { @@ -1115,15 +1119,20 @@ int main(int argc, char **argv) } printf("Connected\n"); } else - entry = load_sail(file); + entry = load_sail(initial_elf_file, /*main_file=*/true); #else - uint64_t entry = load_sail(file); + uint64_t entry = load_sail(initial_elf_file, /*main_file=*/true); #endif + /* Load any additional ELF files into memory */ + for (int i = files_start + 1; i < argc; i++) { + fprintf(stdout, "Loading additional ELF file %s.\n", argv[i]); + (void)load_sail(argv[i], /*main_file=*/false); + } /* initialize spike before sail so that we can access the device-tree blob, * until we roll our own. */ - init_spike(file, entry, rv_ram_size); + init_spike(initial_elf_file, entry, rv_ram_size); init_sail(entry); if (!init_check(s)) |