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| author | Matthew Gretton-Dann <matthew.gretton-dann@arm.com> | 2012-08-24 07:54:45 +0000 |
|---|---|---|
| committer | Matthew Gretton-Dann <matthew.gretton-dann@arm.com> | 2012-08-24 07:54:45 +0000 |
| commit | dcbd0d713ca8b0433b0aaaecd956af1a7117015e (patch) | |
| tree | 53f4b681ce712aa5026c2d26f47978fbdb9c2a30 /gas/config/tc-arm.c | |
| parent | 59d09be6f5643112208f203bcf8a613d89ae776b (diff) | |
| download | gdb-dcbd0d713ca8b0433b0aaaecd956af1a7117015e.zip gdb-dcbd0d713ca8b0433b0aaaecd956af1a7117015e.tar.gz gdb-dcbd0d713ca8b0433b0aaaecd956af1a7117015e.tar.bz2 | |
* gas/config/tc-arm.c (deprecated_coproc_regs_s): New structure.
(deprecated_coproc_regs): New variable.
(deprecated_coproc_reg_count): Likewise.
(do_co_reg): Error on obsolete & warn on deprecated registers.
* gas/testsuite/gas/arm/armv8-a-bad.l: Update testcase.
* gas/testsuite/gas/arm/armv8-a-bad.s: Likewise.
Diffstat (limited to 'gas/config/tc-arm.c')
| -rw-r--r-- | gas/config/tc-arm.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index af4a1e5..02e843d 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -7710,10 +7710,52 @@ do_cmp (void) No special properties. */ +struct deprecated_coproc_regs_s +{ + unsigned cp; + int opc1; + unsigned crn; + unsigned crm; + int opc2; + arm_feature_set deprecated; + arm_feature_set obsoleted; + const char *dep_msg; + const char *obs_msg; +}; + +#define DEPR_ACCESS_V8 \ + N_("This coprocessor register access is deprecated in ARMv8") + +/* Table of all deprecated coprocessor registers. */ +static struct deprecated_coproc_regs_s deprecated_coproc_regs[] = +{ + {15, 0, 7, 10, 5, /* CP15DMB. */ + ARM_FEATURE (ARM_EXT_V8, 0), ARM_FEATURE (0, 0), + DEPR_ACCESS_V8, NULL}, + {15, 0, 7, 10, 4, /* CP15DSB. */ + ARM_FEATURE (ARM_EXT_V8, 0), ARM_FEATURE (0, 0), + DEPR_ACCESS_V8, NULL}, + {15, 0, 7, 5, 4, /* CP15ISB. */ + ARM_FEATURE (ARM_EXT_V8, 0), ARM_FEATURE (0, 0), + DEPR_ACCESS_V8, NULL}, + {14, 6, 1, 0, 0, /* TEEHBR. */ + ARM_FEATURE (ARM_EXT_V8, 0), ARM_FEATURE (0, 0), + DEPR_ACCESS_V8, NULL}, + {14, 6, 0, 0, 0, /* TEECR. */ + ARM_FEATURE (ARM_EXT_V8, 0), ARM_FEATURE (0, 0), + DEPR_ACCESS_V8, NULL}, +}; + +#undef DEPR_ACCESS_V8 + +static const size_t deprecated_coproc_reg_count = + sizeof (deprecated_coproc_regs) / sizeof (deprecated_coproc_regs[0]); + static void do_co_reg (void) { unsigned Rd; + size_t i; Rd = inst.operands[2].reg; if (thumb_mode) @@ -7733,6 +7775,23 @@ do_co_reg (void) constraint (Rd == REG_PC, BAD_PC); } + for (i = 0; i < deprecated_coproc_reg_count; ++i) + { + const struct deprecated_coproc_regs_s *r = + deprecated_coproc_regs + i; + + if (inst.operands[0].reg == r->cp + && inst.operands[1].imm == r->opc1 + && inst.operands[3].reg == r->crn + && inst.operands[4].reg == r->crm + && inst.operands[5].imm == r->opc2) + { + if (!check_obsolete (&r->obsoleted, r->obs_msg) + && warn_on_deprecated + && ARM_CPU_HAS_FEATURE (cpu_variant, r->deprecated)) + as_warn ("%s", r->dep_msg); + } + } inst.instruction |= inst.operands[0].reg << 8; inst.instruction |= inst.operands[1].imm << 21; |