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ARM Assembler support for DBG instruction.

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Add range checking and testing for parsing and encoding of DBG instruction.

llvm-svn: 135102
This commit is contained in:
Jim Grosbach 2011-07-13 22:59:38 +00:00
parent f29783ee55
commit c0ec4205e2
4 changed files with 22 additions and 5 deletions
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5
lib/Target/ARM/ARMInstrInfo.td
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@ -1283,9 +1283,8 @@ def SETEND : AXI<(outs),(ins setend_op:$end), MiscFrm, NoItinerary,
let Inst{8-0} = 0;
}
def DBG : AI<(outs), (ins i32imm:$opt), MiscFrm, NoItinerary, "dbg", "\t$opt",
[/* For disassembly only; pattern left blank */]>,
Requires<[IsARM, HasV7]> {
def DBG : AI<(outs), (ins imm0_15:$opt), MiscFrm, NoItinerary, "dbg", "\t$opt",
[]>, Requires<[IsARM, HasV7]> {
bits<4> opt;
let Inst{27-4} = 0b001100100000111100001111;
let Inst{3-0} = opt;

3
lib/Target/ARM/ARMInstrThumb2.td
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@ -3157,8 +3157,7 @@ def t2WFE : T2I_hint<0b00000010, "wfe", ".w">;
def t2WFI : T2I_hint<0b00000011, "wfi", ".w">;
def t2SEV : T2I_hint<0b00000100, "sev", ".w">;
def t2DBG : T2I<(outs),(ins i32imm:$opt), NoItinerary, "dbg", "\t$opt",
[/* For disassembly only; pattern left blank */]> {
def t2DBG : T2I<(outs), (ins imm0_15:$opt), NoItinerary, "dbg", "\t$opt", []> {
let Inst{31-20} = 0xf3a;
let Inst{15-14} = 0b10;
let Inst{12} = 0;

10
test/MC/ARM/basic-arm-instructions.s
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@ -448,3 +448,13 @@ _func:
@ CHECK: cmp r7, r8, ror r2 @ encoding: [0x78,0x02,0x57,0xe1]
@ CHECK: cmp r1, r6, rrx @ encoding: [0x66,0x00,0x51,0xe1]
@------------------------------------------------------------------------------
@ DBG
@------------------------------------------------------------------------------
dbg #0
dbg #5
dbg #15
@ CHECK: dbg #0 @ encoding: [0xf0,0xf0,0x20,0xe3]
@ CHECK: dbg #5 @ encoding: [0xf5,0xf0,0x20,0xe3]
@ CHECK: dbg #15 @ encoding: [0xff,0xf0,0x20,0xe3]

9
test/MC/ARM/diagnostics.s
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@ -59,3 +59,12 @@
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: error: invalid operand for instruction
@ Out of range immediates for DBG
dbg #-1
dbg #16
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: error: invalid operand for instruction
@ Double-check that we're synced up with the right diagnostics.
@ CHECK-ERRORS: dbg #16