From 91d8b670661883fc0472fd05cf0e54d0e357c187 Mon Sep 17 00:00:00 2001 From: James Greenhalgh Date: Tue, 9 Jan 2018 14:15:00 +0000 Subject: [Arm] Add CSDB instruction CSDB is a new instruction which Arm has defined. As it shares the encoding space with NOP instructions, it is available from Armv3 in Arm mode, and Armv6T2 in Thumb mode. OK? If so, please commit on my behalf as I don't have commit rights over here. Thanks, James --- opcodes/ 2018-01-09 James Greenhalgh * arm-dis.c (arm_opcodes): Add csdb. (thumb32_opcodes): Add csdb. gas/ 2018-01-09 James Greenhalgh * config/tc-arm.c (insns): Add csdb, enable for Armv3 and above in Arm execution state, and Armv6T2 and above in Thumb execution state. * testsuite/gas/arm/csdb.s: New. * testsuite/gas/arm/csdb.d: New. * testsuite/gas/arm/thumb2_it_bad.l: Add csdb. * testsuite/gas/arm/thumb2_it_bad.s: Add csdb. --- gas/ChangeLog | 10 ++++++++++ gas/config/tc-arm.c | 15 +++++++++++++++ gas/testsuite/gas/arm/csdb.d | 10 ++++++++++ gas/testsuite/gas/arm/csdb.s | 6 ++++++ gas/testsuite/gas/arm/thumb2_it_bad.l | 1 + gas/testsuite/gas/arm/thumb2_it_bad.s | 2 ++ opcodes/ChangeLog | 5 +++++ opcodes/arm-dis.c | 6 ++++++ 8 files changed, 55 insertions(+) create mode 100644 gas/testsuite/gas/arm/csdb.d create mode 100644 gas/testsuite/gas/arm/csdb.s diff --git a/gas/ChangeLog b/gas/ChangeLog index d00ccb2..287656b 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,5 +1,15 @@ 2018-01-09 James Greenhalgh + * config/tc-arm.c (insns): Add csdb, enable for Armv3 and above + in Arm execution state, and Armv6T2 and above in Thumb execution + state. + * testsuite/gas/arm/csdb.s: New. + * testsuite/gas/arm/csdb.d: New. + * testsuite/gas/arm/thumb2_it_bad.l: Add csdb. + * testsuite/gas/arm/thumb2_it_bad.s: Add csdb. + +2018-01-09 James Greenhalgh + * testsuite/gas/aarch64/system.d: Update expected results to expect CSDB for hint 0x14. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 85f74a8..0b81c19 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -11275,6 +11275,12 @@ do_t_clz (void) } static void +do_t_csdb (void) +{ + set_it_insn_type (OUTSIDE_IT_INSN); +} + +static void do_t_cps (void) { set_it_insn_type (OUTSIDE_IT_INSN); @@ -19984,6 +19990,15 @@ static const struct asm_opcode insns[] = TC3("ldrsbt", 03000d0, f9100e00, 2, (RRnpc_npcsp, ADDR), ldsttv4, t_ldstt), TC3("strht", 02000b0, f8200e00, 2, (RRnpc_npcsp, ADDR), ldsttv4, t_ldstt), +#undef ARM_VARIANT +#define ARM_VARIANT & arm_ext_v3 +#undef THUMB_VARIANT +#define THUMB_VARIANT & arm_ext_v6t2 + + TUE("csdb", 320f014, f3af8014, 0, (), noargs, t_csdb), + +#undef ARM_VARIANT +#define ARM_VARIANT & arm_ext_v6t2 #undef THUMB_VARIANT #define THUMB_VARIANT & arm_ext_v6t2_v8m TCE("movw", 3000000, f2400000, 2, (RRnpc, HALF), mov16, t_mov16), diff --git a/gas/testsuite/gas/arm/csdb.d b/gas/testsuite/gas/arm/csdb.d new file mode 100644 index 0000000..baf5855 --- /dev/null +++ b/gas/testsuite/gas/arm/csdb.d @@ -0,0 +1,10 @@ +#name: CSDB +#source: csdb.s +#objdump: -dr --prefix-addresses --show-raw-insn + +.*: +file format .*arm.* + +Disassembly of section .text: +0+000 <[^>]*> f3af 8014 ? csdb +0+004 <[^>]*> e320f014 ? csdb + diff --git a/gas/testsuite/gas/arm/csdb.s b/gas/testsuite/gas/arm/csdb.s new file mode 100644 index 0000000..133a5f0 --- /dev/null +++ b/gas/testsuite/gas/arm/csdb.s @@ -0,0 +1,6 @@ +.text +.thumb +.syntax unified +csdb +.arm +csdb diff --git a/gas/testsuite/gas/arm/thumb2_it_bad.l b/gas/testsuite/gas/arm/thumb2_it_bad.l index aa1f658..da9341f 100644 --- a/gas/testsuite/gas/arm/thumb2_it_bad.l +++ b/gas/testsuite/gas/arm/thumb2_it_bad.l @@ -10,3 +10,4 @@ [^:]*:19: Error: instruction is always unconditional -- `bkpteq 0' [^:]*:20: Error: instruction not allowed in IT block -- `setendeq le' [^:]*:22: Error: IT falling in the range of a previous IT block -- `iteq eq' +[^:]*:25: Error: instruction not allowed in IT block -- `csdbeq' diff --git a/gas/testsuite/gas/arm/thumb2_it_bad.s b/gas/testsuite/gas/arm/thumb2_it_bad.s index 6add4fb..72f305d 100644 --- a/gas/testsuite/gas/arm/thumb2_it_bad.s +++ b/gas/testsuite/gas/arm/thumb2_it_bad.s @@ -21,4 +21,6 @@ thumb2_it_bad: it eq iteq eq nop + it eq + csdbeq foo: diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 585169f..96bc41c 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,5 +1,10 @@ 2018-01-09 James Greenhalgh + * arm-dis.c (arm_opcodes): Add csdb. + (thumb32_opcodes): Add csdb. + +2018-01-09 James Greenhalgh + * aarch64-tbl.h (aarch64_opcode_table): Add "csdb". * aarch64-asm-2.c: Regenerate. * aarch64-dis-2.c: Regenerate. diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c index db48b32..5efe031 100644 --- a/opcodes/arm-dis.c +++ b/opcodes/arm-dis.c @@ -1901,6 +1901,9 @@ static const struct opcode32 arm_opcodes[] = {ARM_FEATURE_CORE_LOW (ARM_EXT_V6K), 0x01e00f90, 0x0ff00ff0, "strexh%c\t%12-15R, %0-3R, [%16-19R]"}, + /* CSDB. */ + {ARM_FEATURE_CORE_LOW (ARM_EXT_V3), 0xe320f014, 0xffffffff, "csdb"}, + /* ARM V6K NOP hints. */ {ARM_FEATURE_CORE_LOW (ARM_EXT_V6K), 0x0320f001, 0x0fffffff, "yield%c"}, @@ -2819,6 +2822,9 @@ static const struct opcode32 thumb32_opcodes[] = /* Security extension instructions. */ {ARM_FEATURE_CORE_LOW (ARM_EXT_SEC), 0xf7f08000, 0xfff0f000, "smc%c\t%K"}, + /* CSDB. */ + {ARM_FEATURE_CORE_LOW (ARM_EXT_V6T2), 0xf3af8014, 0xffffffff, "csdb"}, + /* Instructions defined in the basic V6T2 set. */ {ARM_FEATURE_CORE_LOW (ARM_EXT_V6T2), 0xf3af8000, 0xffffffff, "nop%c.w"}, {ARM_FEATURE_CORE_LOW (ARM_EXT_V6T2), 0xf3af8001, 0xffffffff, "yield%c.w"}, -- cgit v1.1