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Signed-off-by: Hau Hsu --- bfd/ChangeLog | 9 ++++++ bfd/elfxx-riscv.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 97d0c585a56..0807a2e0bcb 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,12 @@ +2024-01-17 Hau Hsu + + * elfxx-riscv.c (riscv_parse_subset): Parse 'help' keyword to print + available extension and versions. + (riscv_print_extensions): New function. + (riscv_same_extension_version): New function. + (riscv_same_extension_diff_version): New function. + (riscv_valid_ext): New function. + 2024-01-15 Nick Clifton * 2.42 branch point. diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c index 9a121b47121..f6ffcdc6581 100644 --- a/bfd/elfxx-riscv.c +++ b/bfd/elfxx-riscv.c @@ -2051,6 +2051,71 @@ riscv_set_default_arch (riscv_parse_subset_t *rps) } } +static +bool riscv_same_extension_version( + const struct riscv_supported_ext* ext1, + const struct riscv_supported_ext* ext2) +{ + return (strcmp(ext1->name, ext2->name) == 0 + && ext1->major_version == ext2->major_version + && ext1->minor_version == ext2->minor_version); +} + +static +bool riscv_same_extension_diff_version( + const struct riscv_supported_ext* ext1, + const struct riscv_supported_ext* ext2) +{ + return (strcmp(ext1->name, ext2->name) == 0 + && !(ext1->major_version == ext2->major_version + && ext1->minor_version == ext2->minor_version)); +} + +static +bool riscv_valid_ext(const struct riscv_supported_ext *ext) +{ + return (ext->isa_spec_class != ISA_SPEC_CLASS_NONE + && ext->major_version != RISCV_UNKNOWN_VERSION + && ext->minor_version != RISCV_UNKNOWN_VERSION); +} + +static +void riscv_print_extensions() +{ + /* Record the previous pritned extension. + Print the current one if they are not the same. */ + const struct riscv_supported_ext *cur = NULL, *prev = NULL; + + int i, j; + printf ("All available -march extensions for RISC-V:"); + for (i = 0; riscv_all_supported_ext[i] != NULL; i++) + { + const struct riscv_supported_ext *exts = riscv_all_supported_ext[i]; + prev = NULL; + for (j = 0; exts[j].name != NULL; j++) + { + cur = &exts[j]; + if (!riscv_valid_ext (cur)) + continue; + + if (prev && riscv_same_extension_version (prev, cur)) + continue; + + if (!prev || !riscv_same_extension_diff_version (prev, cur)) + { + printf("\n\t%-40s%d.%d", cur->name, cur->major_version, cur->minor_version); + prev = &exts[j]; + } + else + { + printf(", %d.%d", cur->major_version, cur->minor_version); + prev = &exts[j]; + } + } + } + printf ("\n"); +} + /* Function for parsing ISA string. Return Value: @@ -2089,6 +2154,13 @@ riscv_parse_subset (riscv_parse_subset_t *rps, } p = arch; + /* List all avaiable archs. */ + if (strcmp (p, "help") == 0) + { + riscv_print_extensions(); + exit (EXIT_SUCCESS); + } + if (startswith (p, "rv32")) { *rps->xlen = 32; -- 2.31.1