diff options
Diffstat (limited to 'gas/config/tc-riscv.c')
| -rw-r--r-- | gas/config/tc-riscv.c | 163 |
1 files changed, 23 insertions, 140 deletions
diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c index 426343c..92ddf80 100644 --- a/gas/config/tc-riscv.c +++ b/gas/config/tc-riscv.c @@ -29,6 +29,7 @@ #include "dwarf2dbg.h" #include "dw2gencfi.h" +#include "bfd/elfxx-riscv.h" #include "elf/riscv.h" #include "opcode/riscv.h" @@ -102,160 +103,41 @@ riscv_set_rve (bfd_boolean rve_value) riscv_opts.rve = rve_value; } -struct riscv_subset -{ - const char *name; - - struct riscv_subset *next; -}; - -static struct riscv_subset *riscv_subsets; +static riscv_subset_list_t riscv_subsets; static bfd_boolean -riscv_subset_supports (unsigned xlen_required, const char *feature) +riscv_subset_supports (const char *feature) { - struct riscv_subset *s; - - if (xlen_required && xlen != xlen_required) - return FALSE; - - for (s = riscv_subsets; s != NULL; s = s->next) - if (strcasecmp (s->name, feature) == 0) - return TRUE; + if (riscv_opts.rvc && (strcasecmp (feature, "c") == 0)) + return TRUE; - return FALSE; + return riscv_lookup_subset (&riscv_subsets, feature) != NULL; } static bfd_boolean -riscv_multi_subset_supports (unsigned xlen_required, const char *features[]) +riscv_multi_subset_supports (const char *features[]) { unsigned i = 0; bfd_boolean supported = TRUE; for (;features[i]; ++i) - supported = supported && riscv_subset_supports (xlen_required, features[i]); + supported = supported && riscv_subset_supports (features[i]); return supported; } -static void -riscv_clear_subsets (void) -{ - while (riscv_subsets != NULL) - { - struct riscv_subset *next = riscv_subsets->next; - free ((void *) riscv_subsets->name); - free (riscv_subsets); - riscv_subsets = next; - } -} - -static void -riscv_add_subset (const char *subset) -{ - struct riscv_subset *s = xmalloc (sizeof *s); - - s->name = xstrdup (subset); - s->next = riscv_subsets; - riscv_subsets = s; -} - /* Set which ISA and extensions are available. */ static void riscv_set_arch (const char *s) { - const char *all_subsets = "imafdqc"; - char *extension = NULL; - const char *p = s; - - riscv_clear_subsets(); + riscv_parse_subset_t rps; + rps.subset_list = &riscv_subsets; + rps.error_handler = as_fatal; + rps.xlen = &xlen; - if (strncmp (p, "rv32", 4) == 0) - { - xlen = 32; - p += 4; - } - else if (strncmp (p, "rv64", 4) == 0) - { - xlen = 64; - p += 4; - } - else - as_fatal ("-march=%s: ISA string must begin with rv32 or rv64", s); - - switch (*p) - { - case 'i': - break; - - case 'e': - p++; - riscv_add_subset ("e"); - riscv_add_subset ("i"); - - if (xlen > 32) - as_fatal ("-march=%s: rv%de is not a valid base ISA", s, xlen); - - break; - - case 'g': - p++; - for ( ; *all_subsets != 'q'; all_subsets++) - { - const char subset[] = {*all_subsets, '\0'}; - riscv_add_subset (subset); - } - break; - - default: - as_fatal ("-march=%s: first ISA subset must be `e', `i' or `g'", s); - } - - while (*p) - { - if (*p == 'x') - { - char *subset = xstrdup (p); - char *q = subset; - - while (*++q != '\0' && *q != '_') - ; - *q = '\0'; - - if (extension) - as_fatal ("-march=%s: only one non-standard extension is supported" - " (found `%s' and `%s')", s, extension, subset); - extension = subset; - riscv_add_subset (subset); - p += strlen (subset); - } - else if (*p == '_') - p++; - else if ((all_subsets = strchr (all_subsets, *p)) != NULL) - { - const char subset[] = {*p, 0}; - riscv_add_subset (subset); - all_subsets++; - p++; - } - else - as_fatal ("-march=%s: unsupported ISA subset `%c'", s, *p); - } - - if (riscv_subset_supports (0, "e") && riscv_subset_supports (0, "f")) - as_fatal ("-march=%s: rv32e does not support the `f' extension", s); - - if (riscv_subset_supports (0, "d") && !riscv_subset_supports (0, "f")) - as_fatal ("-march=%s: `d' extension requires `f' extension", s); - - if (riscv_subset_supports (0, "q") && !riscv_subset_supports (0, "d")) - as_fatal ("-march=%s: `q' extension requires `d' extension", s); - - if (riscv_subset_supports (0, "q") && xlen < 64) - as_fatal ("-march=%s: rv32 does not support the `q' extension", s); - - free (extension); + riscv_release_subset_list (&riscv_subsets); + riscv_parse_subset (&rps, s); } /* Handle of the OPCODE hash table. */ @@ -1491,7 +1373,10 @@ riscv_ip (char *str, struct riscv_cl_insn *ip, expressionS *imm_expr, argsStart = s; for ( ; insn && insn->name && strcmp (insn->name, str) == 0; insn++) { - if (!riscv_multi_subset_supports (insn->xlen_requirement, insn->subset)) + if ((insn->xlen_requirement != 0) && (xlen != insn->xlen_requirement)) + continue; + + if (!riscv_multi_subset_supports (insn->subset)) continue; create_insn (ip, insn); @@ -2332,19 +2217,17 @@ riscv_after_parse_args (void) as_bad ("unknown default architecture `%s'", default_arch); } - if (riscv_subsets == NULL) + if (riscv_subsets.head == NULL) riscv_set_arch (xlen == 64 ? "rv64g" : "rv32g"); /* Add the RVC extension, regardless of -march, to support .option rvc. */ riscv_set_rvc (FALSE); - if (riscv_subset_supports (0, "c")) + if (riscv_subset_supports ("c")) riscv_set_rvc (TRUE); - else - riscv_add_subset ("c"); /* Enable RVE if specified by the -march option. */ riscv_set_rve (FALSE); - if (riscv_subset_supports (0, "e")) + if (riscv_subset_supports ("e")) riscv_set_rve (TRUE); /* Infer ABI from ISA if not specified on command line. */ @@ -2357,12 +2240,12 @@ riscv_after_parse_args (void) if (float_abi == FLOAT_ABI_DEFAULT) { - struct riscv_subset *subset; + riscv_subset_t *subset; /* Assume soft-float unless D extension is present. */ float_abi = FLOAT_ABI_SOFT; - for (subset = riscv_subsets; subset != NULL; subset = subset->next) + for (subset = riscv_subsets.head; subset != NULL; subset = subset->next) { if (strcasecmp (subset->name, "D") == 0) float_abi = FLOAT_ABI_DOUBLE; |