98 lines
4.7 KiB
ArmAsm
98 lines
4.7 KiB
ArmAsm
// This test checks the behavior of llvm-objdump's --disassemble-symbols and
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// --show-all-symbols options, in the presence of multiple symbols defined at
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// the same address in an object file.
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// The test input file contains an Arm and a Thumb function, each with two
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// function-type symbols defined at its entry point. Also, because it's Arm,
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// there's a $a mapping symbol defined at the start of the section, and a $t
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// mapping symbol at the point where Arm code stops and Thumb code begins.
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// By default, llvm-objdump will pick one of the symbols to disassemble at each
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// point where any are defined at all. The tie-break sorting criterion is
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// alphabetic, so it will be the alphabetically later symbol in each case: of
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// the names aaaa and bbbb for the Arm function it picks bbbb, and of cccc and
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// dddd for the Thumb function it picks dddd.
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// Including an Arm and a Thumb function also re-checks that these changes to
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// the display of symbols doesn't affect the recognition of mapping symbols for
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// the purpose of switching disassembly mode.
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@ REQUIRES: arm-registered-target
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@ RUN: llvm-mc -triple armv8a-unknown-linux -filetype=obj %s -o %t.o
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// All the run lines below should generate some subset of this
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// display, with different parts included:
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@ HEAD: Disassembly of section .text:
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@ HEAD-EMPTY:
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@ AMAP-NEXT: 00000000 <$a.0>:
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@ AAAA-NEXT: 00000000 <aaaa>:
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@ BBBB-NEXT: 00000000 <bbbb>:
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@ AABB-NEXT: 0: e0800080 add r0, r0, r0, lsl #1
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@ AABB-NEXT: 4: e12fff1e bx lr
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@ BOTH-EMPTY:
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@ TMAP-NEXT: 00000008 <$t.1>:
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@ CCCC-NEXT: 00000008 <cccc>:
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@ DDDD-NEXT: 00000008 <dddd>:
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@ CCDD-NEXT: 8: eb00 0080 add.w r0, r0, r0, lsl #2
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@ CCDD-NEXT: c: 4770 bx lr
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// The default disassembly chooses just the alphabetically later symbol of each
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// set, namely bbbb and dddd.
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@ RUN: llvm-objdump --triple armv8a -d %t.o | FileCheck --check-prefixes=HEAD,BBBB,AABB,BOTH,DDDD,CCDD %s
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// With the --show-all-symbols option, all the symbols are shown, including the
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// administrative mapping symbols.
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@ RUN: llvm-objdump --triple armv8a --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,AMAP,AAAA,BBBB,AABB,BOTH,TMAP,CCCC,DDDD,CCDD %s
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// If we use --disassemble-symbols to ask for the disassembly of aaaa or bbbb
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// or both, then we expect the second cccc/dddd function not to appear in the
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// output at all. Also, we want to see whichever symbol we asked about, or both
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// if we asked about both.
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=aaaa -d %t.o | FileCheck --check-prefixes=HEAD,AAAA,AABB %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=bbbb -d %t.o | FileCheck --check-prefixes=HEAD,BBBB,AABB %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=aaaa,bbbb -d %t.o | FileCheck --check-prefixes=HEAD,AAAA,BBBB,AABB %s
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// With _any_ of those three options and also --show-all-symbols, the
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// disassembled code is still limited to just the symbol(s) you asked about,
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// but all symbols defined at the same address are mentioned, whether you asked
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// about them or not.
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=aaaa --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,AMAP,AAAA,BBBB,AABB %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=bbbb --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,AMAP,AAAA,BBBB,AABB %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=aaaa,bbbb --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,AMAP,AAAA,BBBB,AABB %s
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// Similarly for the Thumb function and its symbols. This time we must check
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// that the aaaa/bbbb block of code was not disassembled _before_ the output
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// we're expecting.
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=cccc -d %t.o | FileCheck --check-prefixes=HEAD,CCCC,CCDD %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=dddd -d %t.o | FileCheck --check-prefixes=HEAD,DDDD,CCDD %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=cccc,dddd -d %t.o | FileCheck --check-prefixes=HEAD,CCCC,DDDD,CCDD %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=cccc --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,TMAP,CCCC,DDDD,CCDD %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=dddd --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,TMAP,CCCC,DDDD,CCDD %s
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@ RUN: llvm-objdump --triple armv8a --disassemble-symbols=cccc,dddd --show-all-symbols -d %t.o | FileCheck --check-prefixes=HEAD,TMAP,CCCC,DDDD,CCDD %s
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.text
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.globl aaaa
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.globl bbbb
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.globl cccc
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.globl dddd
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.arm
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aaaa:
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bbbb:
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add r0, r0, r0, lsl #1
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bx lr
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.thumb
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cccc:
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dddd:
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add.w r0, r0, r0, lsl #2
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bx lr
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