llvm-mc: Support .zerofill emission.
- I'm still trying to figure out the cleanest way to implement this and match the assembler, currently there are some substantial differences.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80347 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/MC/MachO/lcomm-attributes.s b/test/MC/MachO/lcomm-attributes.s
new file mode 100644
index 0000000..2685395
--- /dev/null
+++ b/test/MC/MachO/lcomm-attributes.s
@@ -0,0 +1,136 @@
+// RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump | FileCheck %s
+
+ // Note, this test intentionally mismatches Darwin 'as', which loses the
+ // following global marker.
+ //
+ // FIXME: We should probably warn about our interpretation of this.
+ .globl sym_lcomm_ext_A
+ .lcomm sym_lcomm_ext_A, 4
+ .lcomm sym_lcomm_ext_B, 4
+ .globl sym_lcomm_ext_B
+
+ .globl sym_zfill_ext_A
+ .zerofill __DATA, __bss, sym_zfill_ext_A, 4
+ .zerofill __DATA, __bss, sym_zfill_ext_B, 4
+ .globl sym_zfill_ext_B
+
+// CHECK: ('cputype', 7)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 296)
+// CHECK: ('flag', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 1)
+// CHECK: ('size', 192)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 16)
+// CHECK: ('file_offset', 324)
+// CHECK: ('file_size', 0)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 2)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 0)
+// CHECK: ('offset', 324)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x80000000)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: # Section 1
+// CHECK: (('section_name', '__bss\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 16)
+// CHECK: ('offset', 0)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x1)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 324)
+// CHECK: ('nsyms', 4)
+// CHECK: ('stroff', 372)
+// CHECK: ('strsize', 68)
+// CHECK: ('_string_data', '\x00sym_lcomm_ext_A\x00sym_lcomm_ext_B\x00sym_zfill_ext_A\x00sym_zfill_ext_B\x00\x00\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 0)
+// CHECK: ('_string', 'sym_lcomm_ext_A')
+// CHECK: ),
+// CHECK: # Symbol 1
+// CHECK: (('n_strx', 17)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 4)
+// CHECK: ('_string', 'sym_lcomm_ext_B')
+// CHECK: ),
+// CHECK: # Symbol 2
+// CHECK: (('n_strx', 33)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 8)
+// CHECK: ('_string', 'sym_zfill_ext_A')
+// CHECK: ),
+// CHECK: # Symbol 3
+// CHECK: (('n_strx', 49)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 12)
+// CHECK: ('_string', 'sym_zfill_ext_B')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 0)
+// CHECK: ('iextdefsym', 0)
+// CHECK: ('nextdefsym', 4)
+// CHECK: ('iundefsym', 4)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
diff --git a/test/MC/MachO/zerofill-1.s b/test/MC/MachO/zerofill-1.s
new file mode 100644
index 0000000..a175d4c
--- /dev/null
+++ b/test/MC/MachO/zerofill-1.s
@@ -0,0 +1,121 @@
+// RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+ .text
+ .byte 0 // Align to 2**3 bytes, not 2**1
+
+ .zerofill __DATA, __common, zfill, 2, 1
+
+ .data
+ .align 3
+
+// CHECK: ('cputype', 7)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 364)
+// CHECK: ('flag', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 1)
+// CHECK: ('size', 260)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 10)
+// CHECK: ('file_offset', 392)
+// CHECK: ('file_size', 8)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 3)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 1)
+// CHECK: ('offset', 392)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x80000000)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: # Section 1
+// CHECK: (('section_name', '__common\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 8)
+// CHECK: ('size', 2)
+// CHECK: ('offset', 0)
+// CHECK: ('alignment', 1)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x1)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: # Section 2
+// CHECK: (('section_name', '__data\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 8)
+// CHECK: ('size', 0)
+// CHECK: ('offset', 400)
+// CHECK: ('alignment', 3)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x0)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 400)
+// CHECK: ('nsyms', 1)
+// CHECK: ('stroff', 412)
+// CHECK: ('strsize', 8)
+// CHECK: ('_string_data', '\x00zfill\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 8)
+// CHECK: ('_string', 'zfill')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 1)
+// CHECK: ('iextdefsym', 1)
+// CHECK: ('nextdefsym', 0)
+// CHECK: ('iundefsym', 1)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
diff --git a/test/MC/MachO/zerofill-2.s b/test/MC/MachO/zerofill-2.s
new file mode 100644
index 0000000..e76de84
--- /dev/null
+++ b/test/MC/MachO/zerofill-2.s
@@ -0,0 +1,103 @@
+// RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+ .byte 0
+
+ // This file has size 2, the tail padding doesn't count.
+ .zerofill __DATA, __bss, sym_a, 1
+
+// CHECK: ('cputype', 7)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 296)
+// CHECK: ('flag', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 1)
+// CHECK: ('size', 192)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 2)
+// CHECK: ('file_offset', 324)
+// CHECK: ('file_size', 1)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 2)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 1)
+// CHECK: ('offset', 324)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x80000000)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: # Section 1
+// CHECK: (('section_name', '__bss\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 1)
+// CHECK: ('size', 1)
+// CHECK: ('offset', 0)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x1)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 328)
+// CHECK: ('nsyms', 1)
+// CHECK: ('stroff', 340)
+// CHECK: ('strsize', 8)
+// CHECK: ('_string_data', '\x00sym_a\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 1)
+// CHECK: ('_string', 'sym_a')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 1)
+// CHECK: ('iextdefsym', 1)
+// CHECK: ('nextdefsym', 0)
+// CHECK: ('iundefsym', 1)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
diff --git a/test/MC/MachO/zerofill-3.s b/test/MC/MachO/zerofill-3.s
new file mode 100644
index 0000000..e7f4c7b
--- /dev/null
+++ b/test/MC/MachO/zerofill-3.s
@@ -0,0 +1,141 @@
+// RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+ // FIXME: We don't get the order right currently, the assembler first
+ // orders the symbols, then assigns addresses. :(
+.if 0
+ .lcomm sym_lcomm_B, 4
+ .lcomm sym_lcomm_C, 4, 4
+ .lcomm sym_lcomm_A, 4, 3
+ .lcomm sym_lcomm_D, 4
+ .globl sym_lcomm_D
+ .globl sym_lcomm_C
+.else
+ .lcomm sym_lcomm_C, 4, 4
+ .lcomm sym_lcomm_D, 4
+ .globl sym_lcomm_D
+ .globl sym_lcomm_C
+
+ .lcomm sym_lcomm_A, 4, 3
+ .lcomm sym_lcomm_B, 4
+.endif
+
+// CHECK: ('cputype', 7)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 296)
+// CHECK: ('flag', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 1)
+// CHECK: ('size', 192)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 16)
+// CHECK: ('file_offset', 324)
+// CHECK: ('file_size', 0)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 2)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 0)
+// CHECK: ('offset', 324)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x80000000)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: # Section 1
+// CHECK: (('section_name', '__bss\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 16)
+// CHECK: ('offset', 0)
+// CHECK: ('alignment', 4)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x1)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 324)
+// CHECK: ('nsyms', 4)
+// CHECK: ('stroff', 372)
+// CHECK: ('strsize', 52)
+// CHECK: ('_string_data', '\x00sym_lcomm_C\x00sym_lcomm_D\x00sym_lcomm_A\x00sym_lcomm_B\x00\x00\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 25)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 8)
+// CHECK: ('_string', 'sym_lcomm_A')
+// CHECK: ),
+// CHECK: # Symbol 1
+// CHECK: (('n_strx', 37)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 12)
+// CHECK: ('_string', 'sym_lcomm_B')
+// CHECK: ),
+// CHECK: # Symbol 2
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 0)
+// CHECK: ('_string', 'sym_lcomm_C')
+// CHECK: ),
+// CHECK: # Symbol 3
+// CHECK: (('n_strx', 13)
+// CHECK: ('n_type', 0xf)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 4)
+// CHECK: ('_string', 'sym_lcomm_D')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 2)
+// CHECK: ('iextdefsym', 2)
+// CHECK: ('nextdefsym', 2)
+// CHECK: ('iundefsym', 4)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])