winebuild: Add an option to set the syscall table id.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>

tools/winebuild/build.h

@@ -136,6 +136,7 @@ typedef struct
     int              subsystem;          /* subsystem id */
     int              subsystem_major;    /* subsystem version major number */
     int              subsystem_minor;    /* subsystem version minor number */
+    int              syscall_table;      /* syscall table id */
     int              unicode_app;        /* default to unicode entry point */
     ORDDEF          *entry_points;       /* dll entry points */
     ORDDEF         **names;              /* array of entry point names (points into entry_points) */

tools/winebuild/import.c

@@ -1458,6 +1458,8 @@ void output_syscalls( DLLSPEC *spec )
     {
         ORDDEF *odp = syscalls[i];
         const char *name = get_link_name(odp);
+        unsigned int id = (spec->syscall_table << 12) + i;
+
         output( "\t.align %d\n", get_alignment(16) );
         output( "\t%s\n", func_declaration(name) );
         output( "%s\n", asm_globl(name) );
@@ -1469,12 +1471,12 @@ void output_syscalls( DLLSPEC *spec )
             {
                 output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") );
                 output( "1:\tmovl %s-1b(%%eax),%%edx\n", asm_name("__wine_syscall_dispatcher") );
-                output( "\tmovl $%u,%%eax\n", i );
+                output( "\tmovl $%u,%%eax\n", id );
                 needs_get_pc_thunk = 1;
             }
             else
             {
-                output( "\tmovl $%u,%%eax\n", i );
+                output( "\tmovl $%u,%%eax\n", id );
                 output( "\tmovl $%s,%%edx\n", asm_name("__wine_syscall") );
             }
             output( "\tcall *%%edx\n" );
@@ -1488,7 +1490,7 @@ void output_syscalls( DLLSPEC *spec )
              * validate that instruction, we can just put a jmp there instead. */
             output( "\t.byte 0x4c,0x8b,0xd1\n" ); /* movq %rcx,%r10 */
             output( "\t.byte 0xb8\n" );           /* movl $i,%eax */
-            output( "\t.long %u\n", i );
+            output( "\t.long %u\n", id );
             output( "\t.byte 0xf6,0x04,0x25,0x08,0x03,0xfe,0x7f,0x01\n" ); /* testb $1,0x7ffe0308 */
             output( "\t.byte 0x75,0x03\n" );      /* jne 1f */
             output( "\t.byte 0x0f,0x05\n" );      /* syscall */
@@ -1509,14 +1511,14 @@ void output_syscalls( DLLSPEC *spec )
             break;
         case CPU_ARM:
             output( "\tpush {r0-r3}\n" );
-            output( "\tmovw ip, #%u\n", i );
+            output( "\tmovw ip, #%u\n", id );
             output( "\tmov r3, lr\n" );
             output( "\tbl %s\n", asm_name("__wine_syscall") );
             output( "\tadd sp, #16\n" );
             output( "\tbx lr\n" );
             break;
         case CPU_ARM64:
-            output( "\tmov x8, #%u\n", i );
+            output( "\tmov x8, #%u\n", id );
             output( "\tmov x9, x30\n" );
             output( "\tbl %s\n", asm_name("__wine_syscall" ));
             output( "\tret\n" );

tools/winebuild/main.c

@@ -202,6 +202,15 @@ static void set_subsystem( const char *subsystem, DLLSPEC *spec )
     free( str );
 }
 
+/* set the syscall table id */
+static void set_syscall_table( const char *id, DLLSPEC *spec )
+{
+    int val = atoi( id );
+
+    if (val < 0 || val > 3) fatal_error( "Invalid syscall table id '%s', must be 0-3\n", id );
+    spec->syscall_table = val;
+}
+
 /* set the target CPU and platform */
 static void set_target( const char *target )
 {
@@ -303,6 +312,7 @@ static const char usage_str[] =
 "       --safeseh             Mark object files as SEH compatible\n"
 "       --save-temps          Do not delete the generated intermediate files\n"
 "       --subsystem=SUBSYS    Set the subsystem (one of native, windows, console, wince)\n"
+"       --syscall-table=ID    Set the syscall table id (between 0 and 3)\n"
 "   -u, --undefined=SYMBOL    Add an undefined reference to SYMBOL when linking\n"
 "   -v, --verbose             Display the programs invoked\n"
 "       --version             Print the version and exit\n"
@@ -340,6 +350,7 @@ enum long_options_values
     LONG_OPT_SAVE_TEMPS,
     LONG_OPT_STATICLIB,
     LONG_OPT_SUBSYSTEM,
+    LONG_OPT_SYSCALL_TABLE,
     LONG_OPT_VERSION
 };
 
@@ -367,6 +378,7 @@ static const struct option long_options[] =
     { "safeseh",       0, 0, LONG_OPT_SAFE_SEH },
     { "save-temps",    0, 0, LONG_OPT_SAVE_TEMPS },
     { "subsystem",     1, 0, LONG_OPT_SUBSYSTEM },
+    { "syscall-table", 1, 0, LONG_OPT_SYSCALL_TABLE },
     { "version",       0, 0, LONG_OPT_VERSION },
     /* aliases for short options */
     { "target",        1, 0, 'b' },
@@ -595,6 +607,9 @@ static char **parse_options( int argc, char **argv, DLLSPEC *spec )
         case LONG_OPT_SUBSYSTEM:
             set_subsystem( optarg, spec );
             break;
+        case LONG_OPT_SYSCALL_TABLE:
+            set_syscall_table( optarg, spec );
+            break;
         case LONG_OPT_VERSION:
             printf( "winebuild version " PACKAGE_VERSION "\n" );
             exit(0);

tools/winebuild/utils.c

@@ -911,6 +911,7 @@ DLLSPEC *alloc_dll_spec(void)
     spec->subsystem          = 0;
     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

tools/winebuild/winebuild.man.in

@@ -255,6 +255,11 @@ argument array to use Unicode strings. A graphical executable has a
 Optionally a major and minor subsystem version can also be specified;
 the default subsystem version is 4.0.
 .TP
+.BI --syscall-table= id
+Set the system call table id, between 0 and 3. The default is 0, the
+ntdll syscall table. Only useful in modules that define syscall entry
+points.
+.TP
 .BI \-u,\ --undefined= symbol
 Add \fIsymbol\fR to the list of undefined symbols when invoking the
 linker. This makes it possible to force a specific module of a static