2 # (C) Copyright IBM Corporation 2004, 2005
5 # Permission is hereby granted, free of charge, to any person obtaining a
6 # copy of this software and associated documentation files (the "Software"),
7 # to deal in the Software without restriction, including without limitation
8 # on the rights to use, copy, modify, merge, publish, distribute, sub
9 # license, and/or sell copies of the Software, and to permit persons to whom
10 # the Software is furnished to do so, subject to the following conditions:
12 # The above copyright notice and this permission notice (including the next
13 # paragraph) shall be included in all copies or substantial portions of the
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 # Ian Romanick <idr@us.ibm.com>
27 from __future__
import print_function
32 import gl_XML
, glX_XML
34 class PrintGenericStubs(gl_XML
.gl_print_base
):
37 gl_XML
.gl_print_base
.__init
__(self
)
39 self
.name
= "gl_x86_asm.py (from Mesa)"
40 self
.license
= license
.bsd_license_template
% ( \
41 """Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
42 (C) Copyright IBM Corporation 2004, 2005""", "BRIAN PAUL, IBM")
46 def get_stack_size(self
, f
):
48 for p
in f
.parameterIterator():
52 size
+= p
.get_stack_size()
57 def printRealHeader(self
):
58 print('#include "x86/assyntax.h"')
60 print('#if defined(STDCALL_API)')
61 print('# if defined(USE_MGL_NAMESPACE)')
62 print('# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n2))')
64 print('# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))')
67 print('# if defined(USE_MGL_NAMESPACE)')
68 print('# define GL_PREFIX(n,n2) GLNAME(CONCAT(mgl,n))')
69 print('# define _glapi_Dispatch _mglapi_Dispatch')
71 print('# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))')
75 print('#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))')
77 print('#if defined(GNU_ASSEMBLER) && !defined(__MINGW32__) && !defined(__APPLE__)')
78 print('#define GLOBL_FN(x) GLOBL x ; .type x, @function')
80 print('#define GLOBL_FN(x) GLOBL x')
84 print('#ifdef USE_ELF_TLS')
86 print('#ifdef GLX_X86_READONLY_TEXT')
87 print('# define CTX_INSNS MOV_L(GS:(EAX), EAX)')
89 print('# define CTX_INSNS NOP /* Pad for init_glapi_relocs() */')
92 print('# define GL_STUB(fn,off,fn_alt)\t\t\t\\')
93 print('ALIGNTEXT16;\t\t\t\t\t\t\\')
94 print('GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\')
95 print('GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\')
96 print('\tCALL(_x86_get_dispatch) ;\t\t\t\\')
97 print('\tCTX_INSNS ; \\')
98 print('\tJMP(GL_OFFSET(off))')
100 print('#elif defined(HAVE_PTHREAD)')
101 print('# define GL_STUB(fn,off,fn_alt)\t\t\t\\')
102 print('ALIGNTEXT16;\t\t\t\t\t\t\\')
103 print('GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\')
104 print('GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\')
105 print('\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\')
106 print('\tTEST_L(EAX, EAX) ;\t\t\t\t\\')
107 print('\tJE(1f) ;\t\t\t\t\t\\')
108 print('\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\')
109 print('1:\tCALL(_x86_get_dispatch) ;\t\t\t\\')
110 print('\tJMP(GL_OFFSET(off))')
112 print('# define GL_STUB(fn,off,fn_alt)\t\t\t\\')
113 print('ALIGNTEXT16;\t\t\t\t\t\t\\')
114 print('GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\')
115 print('GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\')
116 print('\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\')
117 print('\tTEST_L(EAX, EAX) ;\t\t\t\t\\')
118 print('\tJE(1f) ;\t\t\t\t\t\\')
119 print('\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\')
120 print('1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\')
121 print('\tJMP(GL_OFFSET(off))')
124 print('#ifdef HAVE_FUNC_ATTRIBUTE_ALIAS')
125 print('# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\')
126 print('\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\')
127 print('\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)')
129 print('# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\')
130 print(' GL_STUB(fn, off, fn_alt)')
135 print('#ifdef USE_ELF_TLS')
137 print('\tGLOBL\tGLNAME(_x86_get_dispatch)')
138 print('\tHIDDEN(GLNAME(_x86_get_dispatch))')
140 print('GLNAME(_x86_get_dispatch):')
142 print('1:\tpopl %eax')
143 print('\taddl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax')
144 print('\tmovl _glapi_tls_Dispatch@GOTNTPOFF(%eax), %eax')
147 print('#elif defined(HAVE_PTHREAD)')
148 print('EXTERN GLNAME(_glapi_Dispatch)')
149 print('EXTERN GLNAME(_gl_DispatchTSD)')
150 print('EXTERN GLNAME(pthread_getspecific)')
153 print('GLNAME(_x86_get_dispatch):')
154 print('\tSUB_L(CONST(24), ESP)')
155 print('\tPUSH_L(GLNAME(_gl_DispatchTSD))')
156 print('\tCALL(GLNAME(pthread_getspecific))')
157 print('\tADD_L(CONST(28), ESP)')
160 print('EXTERN GLNAME(_glapi_get_dispatch)')
164 print('#if defined( USE_ELF_TLS ) && !defined( GLX_X86_READONLY_TEXT )')
165 print('\t\t.section\twtext, "awx", @progbits')
166 print('#endif /* defined( USE_ELF_TLS ) */')
169 print('\t\tALIGNTEXT16')
170 print('\t\tGLOBL GLNAME(gl_dispatch_functions_start)')
171 print('\t\tHIDDEN(GLNAME(gl_dispatch_functions_start))')
172 print('GLNAME(gl_dispatch_functions_start):')
177 def printRealFooter(self
):
179 print('\t\tGLOBL\tGLNAME(gl_dispatch_functions_end)')
180 print('\t\tHIDDEN(GLNAME(gl_dispatch_functions_end))')
181 print('\t\tALIGNTEXT16')
182 print('GLNAME(gl_dispatch_functions_end):')
184 print('#if defined (__ELF__) && defined (__linux__)')
185 print(' .section .note.GNU-stack,"",%progbits')
190 def printBody(self
, api
):
191 for f
in api
.functionIterateByOffset():
192 name
= f
.dispatch_name()
193 stack
= self
.get_stack_size(f
)
194 alt
= "%s@%u" % (name
, stack
)
196 print('\tGL_STUB(%s, %d, %s)' % (name
, f
.offset
, alt
))
198 if not f
.is_static_entry_point(f
.name
):
199 print('\tHIDDEN(GL_PREFIX(%s, %s))' % (name
, alt
))
202 for f
in api
.functionIterateByOffset():
203 name
= f
.dispatch_name()
204 stack
= self
.get_stack_size(f
)
205 alt
= "%s@%u" % (name
, stack
)
207 for n
in f
.entry_points
:
208 if f
.is_static_entry_point(n
):
210 alt2
= "%s@%u" % (n
, stack
)
211 text
= '\tGL_STUB_ALIAS(%s, %d, %s, %s, %s)' % (n
, f
.offset
, alt2
, name
, alt
)
213 if f
.has_different_protocol(n
):
214 print('#ifndef GLX_INDIRECT_RENDERING')
223 parser
= argparse
.ArgumentParser()
224 parser
.add_argument('-f',
226 default
='gl_API.xml',
227 help='An XML file describing an API.')
228 return parser
.parse_args()
233 printer
= PrintGenericStubs()
235 api
= gl_XML
.parse_GL_API(args
.filename
, glX_XML
.glx_item_factory())
239 if __name__
== '__main__':