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Sweden-Number/tools/winebuild/utils.c

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/*
* Small utility functions for winebuild
*
* Copyright 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "build.h"
static struct strarray tmp_files;
static const char *output_file_source_name;
/* atexit handler to clean tmp files */
void cleanup_tmp_files(void)
{
unsigned int i;
for (i = 0; i < tmp_files.count; i++) if (tmp_files.str[i]) unlink( tmp_files.str[i] );
}
char *strupper(char *s)
{
char *p;
for (p = s; *p; p++) *p = toupper(*p);
return s;
}
void fatal_error( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
else fprintf( stderr, "winebuild: " );
vfprintf( stderr, msg, valist );
va_end( valist );
exit(1);
}
void fatal_perror( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
vfprintf( stderr, msg, valist );
perror( " " );
va_end( valist );
exit(1);
}
void error( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
vfprintf( stderr, msg, valist );
va_end( valist );
nb_errors++;
}
void warning( const char *msg, ... )
{
va_list valist;
if (!display_warnings) return;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
fprintf( stderr, "warning: " );
vfprintf( stderr, msg, valist );
va_end( valist );
}
int output( const char *format, ... )
{
int ret;
va_list valist;
va_start( valist, format );
ret = vfprintf( output_file, format, valist );
va_end( valist );
if (ret < 0) fatal_perror( "Output error" );
return ret;
}
static struct strarray get_tools_path(void)
{
static int done;
static struct strarray dirs;
if (!done)
{
strarray_addall( &dirs, tools_path );
strarray_addall( &dirs, strarray_frompath( getenv( "PATH" )));
done = 1;
}
return dirs;
}
/* find a binary in the path */
static const char *find_binary( const char *prefix, const char *name )
{
struct strarray dirs = get_tools_path();
unsigned int i, maxlen = 0;
struct stat st;
char *p, *file;
if (strchr( name, '/' )) return name;
if (!prefix) prefix = "";
for (i = 0; i < dirs.count; i++) maxlen = max( maxlen, strlen(dirs.str[i]) + 2 );
file = xmalloc( maxlen + strlen(prefix) + strlen(name) + sizeof(EXEEXT) + 1 );
for (i = 0; i < dirs.count; i++)
{
strcpy( file, dirs.str[i] );
p = file + strlen(file);
if (p == file) *p++ = '.';
if (p[-1] != '/') *p++ = '/';
if (*prefix)
{
strcpy( p, prefix );
p += strlen(p);
*p++ = '-';
}
strcpy( p, name );
strcat( p, EXEEXT );
if (!stat( file, &st ) && S_ISREG(st.st_mode) && (st.st_mode & 0111)) return file;
}
free( file );
return NULL;
}
void spawn( struct strarray args )
{
int status;
const char *argv0 = find_binary( NULL, args.str[0] );
if (argv0) args.str[0] = argv0;
if (verbose) strarray_trace( args );
if ((status = strarray_spawn( args )))
{
if (status > 0) fatal_error( "%s failed with status %u\n", args.str[0], status );
else fatal_perror( "winebuild" );
exit( 1 );
}
}
static const char *find_clang_tool( struct strarray clang, const char *tool )
{
const char *out = get_temp_file_name( "print_tool", ".out" );
struct strarray args = empty_strarray;
int sout = -1;
char *path, *p;
struct stat st;
size_t cnt;
strarray_addall( &args, clang );
strarray_add( &args, strmake( "-print-prog-name=%s", tool ));
if (verbose) strarray_add( &args, "-v" );
sout = dup( fileno(stdout) );
freopen( out, "w", stdout );
spawn( args );
if (sout >= 0)
{
dup2( sout, fileno(stdout) );
close( sout );
}
if (stat(out, &st) || !st.st_size) return NULL;
path = xmalloc(st.st_size + 1);
sout = open(out, O_RDONLY);
if (sout == -1) return NULL;
cnt = read(sout, path, st.st_size);
close(sout);
path[cnt] = 0;
if ((p = strchr(path, '\n'))) *p = 0;
/* clang returns passed command instead of full path if the tool could not be found */
if (!strcmp(path, tool))
{
free( path );
return NULL;
}
return path;
}
/* find a build tool in the path, trying the various names */
struct strarray find_tool( const char *name, const char * const *names )
{
struct strarray ret = empty_strarray;
const char *file;
const char *alt_names[2];
if (!names)
{
alt_names[0] = name;
alt_names[1] = NULL;
names = alt_names;
}
while (*names)
{
if ((file = find_binary( target_alias, *names ))) break;
names++;
}
if (!file)
{
if (cc_command.count) file = find_clang_tool( cc_command, name );
if (!file && !(file = find_binary( "llvm", name )))
{
struct strarray clang = empty_strarray;
strarray_add( &clang, "clang" );
file = find_clang_tool( clang, strmake( "llvm-%s", name ));
}
}
if (!file) fatal_error( "cannot find the '%s' tool\n", name );
strarray_add( &ret, file );
return ret;
}
/* find a link tool in the path */
struct strarray find_link_tool(void)
{
struct strarray ret = empty_strarray;
const char *file = NULL;
if (cc_command.count) file = find_clang_tool( cc_command, "lld-link" );
if (!file) file = find_binary( NULL, "lld-link" );
if (!file)
{
struct strarray clang = empty_strarray;
strarray_add( &clang, "clang" );
file = find_clang_tool( clang, "lld-link" );
}
if (!file) fatal_error( "cannot find the 'lld-link' tool\n" );
strarray_add( &ret, file );
return ret;
}
struct strarray get_as_command(void)
{
struct strarray args = empty_strarray;
const char *file;
unsigned int i;
int using_cc = 0;
if (cc_command.count)
{
strarray_addall( &args, cc_command );
using_cc = 1;
}
else if (as_command.count)
{
strarray_addall( &args, as_command );
}
else if ((file = find_binary( target_alias, "as" )) || (file = find_binary( target_alias, "gas ")))
{
strarray_add( &args, file );
}
else if ((file = find_binary( NULL, "clang" )))
{
strarray_add( &args, file );
if (target_alias)
{
strarray_add( &args, "-target" );
strarray_add( &args, target_alias );
}
using_cc = 1;
}
if (using_cc)
{
strarray_add( &args, "-xassembler" );
strarray_add( &args, "-c" );
if (force_pointer_size)
strarray_add( &args, (force_pointer_size == 8) ? "-m64" : "-m32" );
if (cpu_option) strarray_add( &args, strmake("-mcpu=%s", cpu_option) );
if (fpu_option) strarray_add( &args, strmake("-mfpu=%s", fpu_option) );
if (arch_option) strarray_add( &args, strmake("-march=%s", arch_option) );
for (i = 0; i < tools_path.count; i++)
strarray_add( &args, strmake("-B%s", tools_path.str[i] ));
return args;
}
if (force_pointer_size)
{
switch (target.platform)
{
case PLATFORM_APPLE:
strarray_add( &args, "-arch" );
strarray_add( &args, (force_pointer_size == 8) ? "x86_64" : "i386" );
break;
default:
strarray_add( &args, (force_pointer_size == 8) ? "--64" : "--32" );
break;
}
}
if (cpu_option) strarray_add( &args, strmake("-mcpu=%s", cpu_option) );
if (fpu_option) strarray_add( &args, strmake("-mfpu=%s", fpu_option) );
return args;
}
struct strarray get_ld_command(void)
{
struct strarray args = empty_strarray;
if (!ld_command.count)
{
static const char * const commands[] = { "ld", "gld", NULL };
ld_command = find_tool( "ld", commands );
}
strarray_addall( &args, ld_command );
if (force_pointer_size)
{
switch (target.platform)
{
case PLATFORM_APPLE:
strarray_add( &args, "-arch" );
strarray_add( &args, (force_pointer_size == 8) ? "x86_64" : "i386" );
break;
case PLATFORM_FREEBSD:
strarray_add( &args, "-m" );
strarray_add( &args, (force_pointer_size == 8) ? "elf_x86_64_fbsd" : "elf_i386_fbsd" );
break;
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
strarray_add( &args, "-m" );
strarray_add( &args, (force_pointer_size == 8) ? "i386pep" : "i386pe" );
break;
default:
strarray_add( &args, "-m" );
strarray_add( &args, (force_pointer_size == 8) ? "elf_x86_64" : "elf_i386" );
break;
}
}
if (target.cpu == CPU_ARM && !is_pe())
strarray_add( &args, "--no-wchar-size-warning" );
return args;
}
const char *get_nm_command(void)
{
if (!nm_command.count)
{
static const char * const commands[] = { "nm", "gnm", NULL };
nm_command = find_tool( "nm", commands );
}
if (nm_command.count > 1)
fatal_error( "multiple arguments in nm command not supported yet\n" );
return nm_command.str[0];
}
/* get a name for a temp file, automatically cleaned up on exit */
char *get_temp_file_name( const char *prefix, const char *suffix )
{
char *name;
int fd;
if (prefix) prefix = get_basename_noext( prefix );
fd = make_temp_file( prefix, suffix, &name );
close( fd );
strarray_add( &tmp_files, name );
return name;
}
/*******************************************************************
* buffer management
*
* Function for reading from/writing to a memory buffer.
*/
int byte_swapped = 0;
const char *input_buffer_filename;
const unsigned char *input_buffer;
size_t input_buffer_pos;
size_t input_buffer_size;
unsigned char *output_buffer;
size_t output_buffer_pos;
size_t output_buffer_size;
void init_input_buffer( const char *file )
{
if (!(input_buffer = read_file( file, &input_buffer_size ))) fatal_perror( "Cannot read %s", file );
if (!input_buffer_size) fatal_error( "%s is an empty file\n", file );
input_buffer_filename = xstrdup( file );
input_buffer_pos = 0;
byte_swapped = 0;
}
unsigned char get_byte(void)
{
if (input_buffer_pos >= input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
return input_buffer[input_buffer_pos++];
}
unsigned short get_word(void)
{
unsigned short ret;
if (input_buffer_pos + sizeof(ret) > input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) );
if (byte_swapped) ret = (ret << 8) | (ret >> 8);
input_buffer_pos += sizeof(ret);
return ret;
}
unsigned int get_dword(void)
{
unsigned int ret;
if (input_buffer_pos + sizeof(ret) > input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) );
if (byte_swapped)
ret = ((ret << 24) | ((ret << 8) & 0x00ff0000) | ((ret >> 8) & 0x0000ff00) | (ret >> 24));
input_buffer_pos += sizeof(ret);
return ret;
}
/* pointer-sized word */
void put_pword( unsigned int val )
{
if (get_ptr_size() == 8) put_qword( val );
else put_dword( val );
}
/* output a standard header for generated files */
void output_standard_file_header(void)
{
if (spec_file_name)
output( "/* File generated automatically from %s; do not edit! */\n", spec_file_name );
else
output( "/* File generated automatically; do not edit! */\n" );
output( "/* This file can be copied, modified and distributed without restriction. */\n\n" );
if (safe_seh)
{
output( "\t.def @feat.00\n\t.scl 3\n\t.type 0\n\t.endef\n" );
output( "\t.globl @feat.00\n" );
output( ".set @feat.00, 1\n" );
}
if (thumb_mode)
{
output( "\t.syntax unified\n" );
output( "\t.thumb\n" );
}
}
/* dump a byte stream into the assembly code */
void dump_bytes( const void *buffer, unsigned int size )
{
unsigned int i;
const unsigned char *ptr = buffer;
if (!size) return;
output( "\t.byte " );
for (i = 0; i < size - 1; i++, ptr++)
{
if ((i % 16) == 15) output( "0x%02x\n\t.byte ", *ptr );
else output( "0x%02x,", *ptr );
}
output( "0x%02x\n", *ptr );
}
/*******************************************************************
* open_input_file
*
* Open a file in the given srcdir and set the input_file_name global variable.
*/
FILE *open_input_file( const char *srcdir, const char *name )
{
char *fullname;
FILE *file = fopen( name, "r" );
if (!file && srcdir)
{
fullname = strmake( "%s/%s", srcdir, name );
file = fopen( fullname, "r" );
}
else fullname = xstrdup( name );
if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
input_file_name = fullname;
current_line = 1;
return file;
}
/*******************************************************************
* close_input_file
*
* Close the current input file (must have been opened with open_input_file).
*/
void close_input_file( FILE *file )
{
fclose( file );
free( input_file_name );
input_file_name = NULL;
current_line = 0;
}
/*******************************************************************
* open_output_file
*/
void open_output_file(void)
{
if (output_file_name)
{
if (strendswith( output_file_name, ".o" ))
output_file_source_name = open_temp_output_file( ".s" );
else
if (!(output_file = fopen( output_file_name, "w" )))
fatal_error( "Unable to create output file '%s'\n", output_file_name );
}
else output_file = stdout;
}
/*******************************************************************
* close_output_file
*/
void close_output_file(void)
{
if (!output_file || !output_file_name) return;
if (fclose( output_file ) < 0) fatal_perror( "fclose" );
if (output_file_source_name) assemble_file( output_file_source_name, output_file_name );
output_file = NULL;
}
/*******************************************************************
* open_temp_output_file
*/
char *open_temp_output_file( const char *suffix )
{
char *tmp_file = get_temp_file_name( output_file_name, suffix );
if (!(output_file = fopen( tmp_file, "w" )))
fatal_error( "Unable to create output file '%s'\n", tmp_file );
return tmp_file;
}
/*******************************************************************
* remove_stdcall_decoration
*
* Remove a possible @xx suffix from a function name.
* Return the numerical value of the suffix, or -1 if none.
*/
int remove_stdcall_decoration( char *name )
{
char *p, *end = strrchr( name, '@' );
if (!end || !end[1] || end == name) return -1;
if (target.cpu != CPU_i386) return -1;
/* make sure all the rest is digits */
for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1;
*end = 0;
return atoi( end + 1 );
}
/*******************************************************************
* assemble_file
*
* Run a file through the assembler.
*/
void assemble_file( const char *src_file, const char *obj_file )
{
struct strarray args = get_as_command();
strarray_add( &args, "-o" );
strarray_add( &args, obj_file );
strarray_add( &args, src_file );
spawn( args );
}
/*******************************************************************
* alloc_dll_spec
*
* Create a new dll spec file descriptor
*/
DLLSPEC *alloc_dll_spec(void)
{
DLLSPEC *spec;
spec = xmalloc( sizeof(*spec) );
memset( spec, 0, sizeof(*spec) );
spec->type = SPEC_WIN32;
spec->base = MAX_ORDINALS;
spec->characteristics = IMAGE_FILE_EXECUTABLE_IMAGE;
spec->subsystem = IMAGE_SUBSYSTEM_WINDOWS_CUI;
spec->subsystem_major = 4;
spec->subsystem_minor = 0;
spec->syscall_table = 0;
if (get_ptr_size() > 4)
spec->characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
else
spec->characteristics |= IMAGE_FILE_32BIT_MACHINE;
spec->dll_characteristics = IMAGE_DLLCHARACTERISTICS_NX_COMPAT;
return spec;
}
/*******************************************************************
* free_dll_spec
*
* Free dll spec file descriptor
*/
void free_dll_spec( DLLSPEC *spec )
{
int i;
for (i = 0; i < spec->nb_entry_points; i++)
{
ORDDEF *odp = &spec->entry_points[i];
free( odp->name );
free( odp->export_name );
free( odp->link_name );
}
free( spec->file_name );
free( spec->dll_name );
free( spec->c_name );
free( spec->init_func );
free( spec->entry_points );
free( spec->names );
free( spec->ordinals );
free( spec->resources );
free( spec );
}
/*******************************************************************
* make_c_identifier
*
* Map a string to a valid C identifier.
*/
char *make_c_identifier( const char *str )
{
char *p, buffer[256];
for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
{
if (isalnum(*str)) *p = *str;
else *p = '_';
}
*p = 0;
return xstrdup( buffer );
}
/*******************************************************************
* get_stub_name
*
* Generate an internal name for a stub entry point.
*/
const char *get_stub_name( const ORDDEF *odp, const DLLSPEC *spec )
{
static char *buffer;
free( buffer );
if (odp->name || odp->export_name)
{
char *p;
buffer = strmake( "__wine_stub_%s", odp->name ? odp->name : odp->export_name );
/* make sure name is a legal C identifier */
for (p = buffer; *p; p++) if (!isalnum(*p) && *p != '_') break;
if (!*p) return buffer;
free( buffer );
}
buffer = strmake( "__wine_stub_%s_%d", make_c_identifier(spec->file_name), odp->ordinal );
return buffer;
}
/* return the stdcall-decorated name for an entry point */
const char *get_link_name( const ORDDEF *odp )
{
static char *buffer;
char *ret;
if (target.cpu != CPU_i386) return odp->link_name;
switch (odp->type)
{
case TYPE_STDCALL:
if (is_pe())
{
if (odp->flags & FLAG_THISCALL) return odp->link_name;
if (odp->flags & FLAG_FASTCALL) ret = strmake( "@%s@%u", odp->link_name, get_args_size( odp ));
else if (!kill_at) ret = strmake( "%s@%u", odp->link_name, get_args_size( odp ));
else return odp->link_name;
}
else
{
if (odp->flags & FLAG_THISCALL) ret = strmake( "__thiscall_%s", odp->link_name );
else if (odp->flags & FLAG_FASTCALL) ret = strmake( "__fastcall_%s", odp->link_name );
else return odp->link_name;
}
break;
case TYPE_PASCAL:
if (is_pe() && !kill_at)
{
int args = get_args_size( odp );
if (odp->flags & FLAG_REGISTER) args += get_ptr_size(); /* context argument */
ret = strmake( "%s@%u", odp->link_name, args );
}
else return odp->link_name;
break;
default:
return odp->link_name;
}
free( buffer );
buffer = ret;
return ret;
}
/*******************************************************************
* sort_func_list
*
* Sort a list of functions, removing duplicates.
*/
int sort_func_list( ORDDEF **list, int count, int (*compare)(const void *, const void *) )
{
int i, j;
if (!count) return 0;
qsort( list, count, sizeof(*list), compare );
for (i = j = 0; i < count; i++) if (compare( &list[j], &list[i] )) list[++j] = list[i];
return j + 1;
}
/*****************************************************************
* Function: get_alignment
*
* Description:
* According to the info page for gas, the .align directive behaves
* differently on different systems. On some architectures, the
* argument of a .align directive is the number of bytes to pad to, so
* to align on an 8-byte boundary you'd say
* .align 8
* On other systems, the argument is "the number of low-order zero bits
* that the location counter must have after advancement." So to
* align on an 8-byte boundary you'd say
* .align 3
*
* The reason gas is written this way is that it's trying to mimic
* native assemblers for the various architectures it runs on. gas
* provides other directives that work consistently across
* architectures, but of course we want to work on all arches with or
* without gas. Hence this function.
*
*
* Parameters:
* align -- the number of bytes to align to. Must be a power of 2.
*/
unsigned int get_alignment(unsigned int align)
{
unsigned int n;
assert( !(align & (align - 1)) );
switch (target.cpu)
{
case CPU_i386:
case CPU_x86_64:
if (target.platform != PLATFORM_APPLE) return align;
/* fall through */
case CPU_ARM:
case CPU_ARM64:
n = 0;
while ((1u << n) != align) n++;
return n;
}
/* unreached */
assert(0);
return 0;
}
/* return the page size for the target CPU */
unsigned int get_page_size(void)
{
return 0x1000; /* same on all platforms */
}
/* return the total size in bytes of the arguments on the stack */
unsigned int get_args_size( const ORDDEF *odp )
{
int i, size;
for (i = size = 0; i < odp->u.func.nb_args; i++)
{
switch (odp->u.func.args[i])
{
case ARG_INT64:
case ARG_DOUBLE:
if (target.cpu == CPU_ARM) size = (size + 7) & ~7;
size += 8;
break;
case ARG_INT128:
/* int128 is passed as pointer on x86_64 */
if (target.cpu != CPU_x86_64)
{
size += 16;
break;
}
/* fall through */
default:
size += get_ptr_size();
break;
}
}
return size;
}
/* return the assembly name for a C symbol */
const char *asm_name( const char *sym )
{
static char *buffer;
switch (target.platform)
{
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
if (target.cpu != CPU_i386) return sym;
if (sym[0] == '@') return sym; /* fastcall */
/* fall through */
case PLATFORM_APPLE:
if (sym[0] == '.' && sym[1] == 'L') return sym;
free( buffer );
buffer = strmake( "_%s", sym );
return buffer;
default:
return sym;
}
}
/* return an assembly function declaration for a C function name */
const char *func_declaration( const char *func )
{
static char *buffer;
switch (target.platform)
{
case PLATFORM_APPLE:
return "";
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
free( buffer );
buffer = strmake( ".def %s\n\t.scl 2\n\t.type 32\n\t.endef%s", asm_name(func),
thumb_mode ? "\n\t.thumb_func" : "" );
break;
default:
free( buffer );
switch (target.cpu)
{
case CPU_ARM:
buffer = strmake( ".type %s,%%function%s", func,
thumb_mode ? "\n\t.thumb_func" : "" );
break;
case CPU_ARM64:
buffer = strmake( ".type %s,%%function", func );
break;
default:
buffer = strmake( ".type %s,@function", func );
break;
}
break;
}
return buffer;
}
/* output a size declaration for an assembly function */
void output_function_size( const char *name )
{
switch (target.platform)
{
case PLATFORM_APPLE:
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
break;
default:
output( "\t.size %s, .-%s\n", name, name );
break;
}
}
/* output a .cfi directive */
void output_cfi( const char *format, ... )
{
va_list valist;
if (!unwind_tables) return;
va_start( valist, format );
fputc( '\t', output_file );
vfprintf( output_file, format, valist );
fputc( '\n', output_file );
va_end( valist );
}
/* output an RVA pointer */
void output_rva( const char *format, ... )
{
va_list valist;
va_start( valist, format );
switch (target.platform)
{
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
output( "\t.rva " );
vfprintf( output_file, format, valist );
fputc( '\n', output_file );
break;
default:
output( "\t.long " );
vfprintf( output_file, format, valist );
output( " - .L__wine_spec_rva_base\n" );
break;
}
va_end( valist );
}
/* output the GNU note for non-exec stack */
void output_gnu_stack_note(void)
{
switch (target.platform)
{
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
case PLATFORM_APPLE:
break;
default:
switch (target.cpu)
{
case CPU_ARM:
case CPU_ARM64:
output( "\t.section .note.GNU-stack,\"\",%%progbits\n" );
break;
default:
output( "\t.section .note.GNU-stack,\"\",@progbits\n" );
break;
}
break;
}
}
/* return a global symbol declaration for an assembly symbol */
const char *asm_globl( const char *func )
{
static char *buffer;
free( buffer );
switch (target.platform)
{
case PLATFORM_APPLE:
buffer = strmake( "\t.globl _%s\n\t.private_extern _%s\n_%s:", func, func, func );
break;
case PLATFORM_MINGW:
case PLATFORM_WINDOWS:
buffer = strmake( "\t.globl %s%s\n%s%s:", target.cpu == CPU_i386 ? "_" : "", func,
target.cpu == CPU_i386 ? "_" : "", func );
break;
default:
buffer = strmake( "\t.globl %s\n\t.hidden %s\n%s:", func, func, func );
break;
}
return buffer;
}
const char *get_asm_ptr_keyword(void)
{
switch(get_ptr_size())
{
case 4: return ".long";
case 8: return ".quad";
}
assert(0);
return NULL;
}
const char *get_asm_string_keyword(void)
{
switch (target.platform)
{
case PLATFORM_APPLE:
return ".asciz";
default:
return ".string";
}
}
const char *get_asm_export_section(void)
{
switch (target.platform)
{
case PLATFORM_APPLE: return ".data";
case PLATFORM_MINGW:
case PLATFORM_WINDOWS: return ".section .edata";
default: return ".section .data";
}
}
const char *get_asm_rodata_section(void)
{
switch (target.platform)
{
case PLATFORM_APPLE: return ".const";
default: return ".section .rodata";
}
}
const char *get_asm_rsrc_section(void)
{
switch (target.platform)
{
case PLATFORM_APPLE: return ".data";
case PLATFORM_MINGW:
case PLATFORM_WINDOWS: return ".section .rsrc";
default: return ".section .data";
}
}
const char *get_asm_string_section(void)
{
switch (target.platform)
{
case PLATFORM_APPLE: return ".cstring";
default: return ".section .rodata";
}
}
const char *arm64_page( const char *sym )
{
static char *buffer;
switch (target.platform)
{
case PLATFORM_APPLE:
free( buffer );
buffer = strmake( "%s@PAGE", sym );
return buffer;
default:
return sym;
}
}
const char *arm64_pageoff( const char *sym )
{
static char *buffer;
free( buffer );
switch (target.platform)
{
case PLATFORM_APPLE:
buffer = strmake( "%s@PAGEOFF", sym );
break;
default:
buffer = strmake( ":lo12:%s", sym );
break;
}
return buffer;
}
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