Create global variable from DWARF

[imbillow]

Your checklist for this pull request

• I've read the guidelines for contributing to this repository
• I made sure to follow the project's coding style
• I've documented or updated the documentation of every function and struct this PR changes. If not so I've explained why.
• I've added tests that prove my fix is effective or that my feature works (if possible)
• I've updated the rizin book with the relevant information (if needed)

Detailed description

...

Test plan

...

Closing issues

closes #3984

[XVilka]

Looks much better now, thanks!
Please also add a test with a static variable defined inside a function with two cases:

int fn1(int a; int b) {
     static char* bla = NULL;
     ....
     bla = strdup("qwe");
 }
 
 int fn2(void *q, bool arg) {
      const static float qwe = 30.0;
      ....
      printf("qwe = %x\n", qwe);
}

Or something like that - with static inside the function, and const static too.

See also those 4 failed tests:

[XX] db/abi/compilers/gcc_64 ELF_ABI : gcc O0 dwarf info
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -Qc 'id~?
' bins/abi_bins/elf/compilers/gcc/echo_gcc_O0
-- stdout
--- expected
+++ actual
@@ -1,1 +1,1 @@
-25945
+25948

[**]                            db/abi/compilers/gcc_64    13735 OK       904 BR        1 XX       22 FX


[XX] db/abi/compilers/clang ELF_ABI : Clang m32 O0 dwarf info
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -Qc 'id~?
' bins/abi_bins/elf/compilers/clang/echo_clang_m32_O0
-- stdout
--- expected
+++ actual
@@ -1,1 +1,1 @@
-22327
+22330

-- stderr
ERROR: Global variable quoting_style_args at 0x804e2b4 already exists!

[**]                             db/abi/compilers/clang    13744 OK       904 BR        2 XX       22 FX


[XX] db/abi/compilers/clang_64 ELF_ABI : Clang O0 dwarf info
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -Qc 'id~?
' bins/abi_bins/elf/compilers/clang/echo_clang_O0
-- stdout
--- expected
+++ actual
@@ -1,1 +1,1 @@
-22442
+22445

[**]                          db/abi/compilers/clang_64    13753 OK       904 BR        3 XX       22 FX


[XX] db/abi/compilers/gcc ELF_ABI : gcc m32 O0 dwarf info
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -Qc 'id~?
' bins/abi_bins/elf/compilers/gcc/echo_gcc_m32_O0
-- stdout
--- expected
+++ actual
@@ -1,1 +1,1 @@
-25788
+25791

And (maybe unnecessary) error message:

[XX] db/rzil/ppc64 emulateme-little-endian
RZ_NOPLUGINS=1 /usr/bin/rizin -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -T -Qc 's sym.decrypt
e bin.str.enc=utf8
ps @ obj.seckrit
aezi
o malloc://0x1000 0x400000
o malloc://0x10 0x500000
e io.cache=1
w AnyColourYouLike @ 0x500000
ar r1=0x400000
ar r3=0x500000
aezsu 0x001007f8
ps @ obj.seckrit
' bins/elf/ppc/emulateme-ppc64le
-- stderr
--- expected
+++ actual
@@ -1,3 +1,32 @@
+ERROR: Global variable lock at 0x1e29f8 already exists!
+ERROR: Global variable lock at 0x1e29f8 already exists!
+ERROR: Global variable step4_jumps at 0x194f40 already exists!
+ERROR: Global variable state at 0x1e7010 already exists!
+ERROR: Global variable state at 0x1e7010 already exists!
+ERROR: Global variable __elf_set___libc_subfreeres_element_free_mem__ at 0x1af8f8 already exists!
+ERROR: Global variable __elf_set___libc_subfreeres_element_free_mem__ at 0x1af8f8 already exists!
+ERROR: Global variable map at 0x1e7788 already exists!

If we can't avoid it - should be only a warning at most.

[wargio]

i think those "dup" should be INFO

[XVilka]

@imbillow it affects loading the PE with debug symbols into Windows debugger:

[**]          C:\projects\rizin\test\db\analysis\xtensa    17016 OK       995 BR        0 XX       34 FX
[XX] C:\projects\rizin\test\db\archos\windows-x64\dbg_oo ood and doc
ANSICON=1 RZ_NOPLUGINS=1 C:\projects\rizin\rizin-clang_cl_64_dyn-v0.7.0\bin\rizin.exe -escr.utf8=0 -escr.color=0 -escr.interactive=0 -eflirt.sigdb.load.system=false -eflirt.sigdb.load.home=false -N -Qc '(reopen; ood > $_; doc > $_)
4 .(reopen)
' bins\pe\hello_world_not_stripped.exe
-- stderr
Spawned new process with pid 3328, tid = 3868
-- exit status: -1073741819
[**] C:\projects\rizin\test\db\archos\windows-x64\dbg_oo    17016 OK       995 BR        1 XX       34 FX