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| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2015-10-16 13:06:09 +0200 |
|---|---|---|
| committer | Bernhard Schommer <bernhardschommer@gmail.com> | 2015-10-16 13:06:09 +0200 |
| commit | 24b4159b6a29328c529e0e59405e03ea192aa99e (patch) | |
| tree | 4b39da911a2eb037e3c9fb3950d53bb0bd6a41b2 /driver | |
| parent | 1e52bb2001964d87086cea00d0cb779e270b99ce (diff) | |
| download | compcert-24b4159b6a29328c529e0e59405e03ea192aa99e.tar.gz compcert-24b4159b6a29328c529e0e59405e03ea192aa99e.zip | |
Implemented the usage of DW_AT_ranges for non-contiguous address ranges.
The gcc produces DW_AT_ranges for non-contiguous address ranges, like
compilation units containing functions which are placed in different
ELF-sections or lexical scopes that are split up. With this commit
CompCert also uses this DWARF v3 feature for gnu backend based targets.
In order to ensure backward compability a flag is added which avoids
this and produces debug info in DWARF v2 format.
Bug 17392.
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/Clflags.ml | 1 | ||||
| -rw-r--r-- | driver/Driver.ml | 8 |
2 files changed, 8 insertions, 1 deletions
diff --git a/driver/Clflags.ml b/driver/Clflags.ml index 9d3697bd..b0c24f08 100644 --- a/driver/Clflags.ml +++ b/driver/Clflags.ml @@ -46,6 +46,7 @@ let option_dmach = ref false let option_dasm = ref false let option_sdump = ref false let option_g = ref false +let option_gdwarf = ref 2 let option_o = ref (None: string option) let option_E = ref false let option_S = ref false diff --git a/driver/Driver.ml b/driver/Driver.ml index 4b58fb4d..7459e030 100644 --- a/driver/Driver.ml +++ b/driver/Driver.ml @@ -444,6 +444,7 @@ Language support options (use -fno-<opt> to turn off -f<opt>) : -fnone Turn off all language support options above Debugging options: -g Generate debugging information + -gdwarf- (GCC only) Generate debug information in DWARF v2 or DWARF v3 -frename-static Rename static functions and declarations Optimization options: (use -fno-<opt> to turn off -f<opt>) -O Optimize the compiled code [on by default] @@ -549,7 +550,12 @@ let cmdline_actions = Exact "-fall", Self (fun _ -> set_all language_support_options); Exact "-fnone", Self (fun _ -> unset_all language_support_options); (* Debugging options *) - Exact "-g", Self (fun s -> option_g := true); + Exact "-g", Self (fun s -> option_g := true; + option_gdwarf := 3); + Exact "-gdwarf-2", Self (fun s -> option_g:=true; + option_gdwarf := 2); + Exact "-gdwarf-3", Self (fun s -> option_g := true; + option_gdwarf := 3); Exact "-frename-static", Self (fun s -> option_rename_static:= true); (* Code generation options -- more below *) Exact "-O0", Self (fun _ -> unset_all optimization_options); |