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| author | Bernhard Schommer <bschommer@users.noreply.github.com> | 2019-05-10 14:46:05 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2019-05-10 14:46:05 +0200 |
| commit | 1eaf745c5e4e32784a8e919b1a82d4d725036214 (patch) | |
| tree | 475f1f146d9fc8937b6b7e5e866141dc7a9c2ab2 /x86 | |
| parent | 1e821bc1f1fb7a6b73ff1468b8b34f61b78cf304 (diff) | |
| download | compcert-kvx-1eaf745c5e4e32784a8e919b1a82d4d725036214.tar.gz compcert-kvx-1eaf745c5e4e32784a8e919b1a82d4d725036214.zip | |
Added options -fcommon and -fno-common (#164)
The option -fcommon controls whether uninitialized global
variables are placed in the COMMON section. If the option is given
in the negated form, -fno-common, variables are not placed in the
COMMON section. They are placed in the same sections as gcc does.
If the variables are not placed in the COMMON section merging of
tentative definitions is inhibited and multiple definitions lead
to a linker error, as it does for gcc.
Diffstat (limited to 'x86')
| -rw-r--r-- | x86/TargetPrinter.ml | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/x86/TargetPrinter.ml b/x86/TargetPrinter.ml index 3ac2f36e..2e28e983 100644 --- a/x86/TargetPrinter.ml +++ b/x86/TargetPrinter.ml @@ -134,9 +134,9 @@ module ELF_System : SYSTEM = let name_of_section = function | Section_text -> ".text" | Section_data i | Section_small_data i -> - if i then ".data" else "COMM" + if i then ".data" else common_section () | Section_const i | Section_small_const i -> - if i then ".section .rodata" else "COMM" + if i || (not !Clflags.option_fcommon) then ".section .rodata" else "COMM" | Section_string -> ".section .rodata" | Section_literal -> ".section .rodata.cst8,\"aM\",@progbits,8" | Section_jumptable -> ".text" @@ -192,9 +192,9 @@ module MacOS_System : SYSTEM = let name_of_section = function | Section_text -> ".text" | Section_data i | Section_small_data i -> - if i then ".data" else "COMM" + if i || (not !Clflags.option_fcommon) then ".data" else "COMM" | Section_const i | Section_small_const i -> - if i then ".const" else "COMM" + if i || (not !Clflags.option_fcommon) then ".const" else "COMM" | Section_string -> ".const" | Section_literal -> ".literal8" | Section_jumptable -> ".text" (* needed in 64 bits, not a problem in 32 bits *) @@ -269,9 +269,9 @@ module Cygwin_System : SYSTEM = let name_of_section = function | Section_text -> ".text" | Section_data i | Section_small_data i -> - if i then ".data" else "COMM" + if i then ".data" else common_section () | Section_const i | Section_small_const i -> - if i then ".section .rdata,\"dr\"" else "COMM" + if i || (not !Clflags.option_fcommon) then ".section .rdata,\"dr\"" else "COMM" | Section_string -> ".section .rdata,\"dr\"" | Section_literal -> ".section .rdata,\"dr\"" | Section_jumptable -> ".text" |