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('# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n2))')
63 print('# define GL_PREFIX(n,n2) GLNAME(CONCAT(gl,n))')
66 print('#define GL_OFFSET(x) CODEPTR(REGOFF(4 * x, EAX))')
68 print('#if defined(GNU_ASSEMBLER) && !defined(__MINGW32__) && !defined(__APPLE__)')
69 print('#define GLOBL_FN(x) GLOBL x ; .type x, @function')
71 print('#define GLOBL_FN(x) GLOBL x')
75 print('#ifdef USE_ELF_TLS')
77 print('#ifdef GLX_X86_READONLY_TEXT')
78 print('# define CTX_INSNS MOV_L(GS:(EAX), EAX)')
80 print('# define CTX_INSNS NOP /* Pad for init_glapi_relocs() */')
83 print('# define GL_STUB(fn,off,fn_alt)\t\t\t\\')
84 print('ALIGNTEXT16;\t\t\t\t\t\t\\')
85 print('GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\')
86 print('GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\')
87 print('\tCALL(_x86_get_dispatch) ;\t\t\t\\')
88 print('\tCTX_INSNS ; \\')
89 print('\tJMP(GL_OFFSET(off))')
91 print('#elif defined(HAVE_PTHREAD)')
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('\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\')
97 print('\tTEST_L(EAX, EAX) ;\t\t\t\t\\')
98 print('\tJE(1f) ;\t\t\t\t\t\\')
99 print('\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\')
100 print('1:\tCALL(_x86_get_dispatch) ;\t\t\t\\')
101 print('\tJMP(GL_OFFSET(off))')
103 print('# define GL_STUB(fn,off,fn_alt)\t\t\t\\')
104 print('ALIGNTEXT16;\t\t\t\t\t\t\\')
105 print('GLOBL_FN(GL_PREFIX(fn, fn_alt));\t\t\t\\')
106 print('GL_PREFIX(fn, fn_alt):\t\t\t\t\t\\')
107 print('\tMOV_L(CONTENT(GLNAME(_glapi_Dispatch)), EAX) ;\t\\')
108 print('\tTEST_L(EAX, EAX) ;\t\t\t\t\\')
109 print('\tJE(1f) ;\t\t\t\t\t\\')
110 print('\tJMP(GL_OFFSET(off)) ;\t\t\t\t\\')
111 print('1:\tCALL(_glapi_get_dispatch) ;\t\t\t\\')
112 print('\tJMP(GL_OFFSET(off))')
115 print('#ifdef HAVE_FUNC_ATTRIBUTE_ALIAS')
116 print('# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\')
117 print('\t.globl\tGL_PREFIX(fn, fn_alt) ;\t\t\t\\')
118 print('\t.set\tGL_PREFIX(fn, fn_alt), GL_PREFIX(alias, alias_alt)')
120 print('# define GL_STUB_ALIAS(fn,off,fn_alt,alias,alias_alt)\t\\')
121 print(' GL_STUB(fn, off, fn_alt)')
126 print('#ifdef USE_ELF_TLS')
128 print('\tGLOBL\tGLNAME(_x86_get_dispatch)')
129 print('\tHIDDEN(GLNAME(_x86_get_dispatch))')
131 print('GLNAME(_x86_get_dispatch):')
133 print('1:\tpopl %eax')
134 print('\taddl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax')
135 print('\tmovl _glapi_tls_Dispatch@GOTNTPOFF(%eax), %eax')
138 print('#elif defined(HAVE_PTHREAD)')
139 print('EXTERN GLNAME(_glapi_Dispatch)')
140 print('EXTERN GLNAME(_gl_DispatchTSD)')
141 print('EXTERN GLNAME(pthread_getspecific)')
144 print('GLNAME(_x86_get_dispatch):')
145 print('\tSUB_L(CONST(24), ESP)')
146 print('\tPUSH_L(GLNAME(_gl_DispatchTSD))')
147 print('\tCALL(GLNAME(pthread_getspecific))')
148 print('\tADD_L(CONST(28), ESP)')
151 print('EXTERN GLNAME(_glapi_get_dispatch)')
155 print('#if defined( USE_ELF_TLS ) && !defined( GLX_X86_READONLY_TEXT )')
156 print('\t\t.section\twtext, "awx", @progbits')
157 print('#endif /* defined( USE_ELF_TLS ) */')
160 print('\t\tALIGNTEXT16')
161 print('\t\tGLOBL GLNAME(gl_dispatch_functions_start)')
162 print('\t\tHIDDEN(GLNAME(gl_dispatch_functions_start))')
163 print('GLNAME(gl_dispatch_functions_start):')
168 def printRealFooter(self
):
170 print('\t\tGLOBL\tGLNAME(gl_dispatch_functions_end)')
171 print('\t\tHIDDEN(GLNAME(gl_dispatch_functions_end))')
172 print('\t\tALIGNTEXT16')
173 print('GLNAME(gl_dispatch_functions_end):')
175 print('#if defined (__ELF__) && defined (__linux__)')
176 print(' .section .note.GNU-stack,"",%progbits')
181 def printBody(self
, api
):
182 for f
in api
.functionIterateByOffset():
183 name
= f
.dispatch_name()
184 stack
= self
.get_stack_size(f
)
185 alt
= "%s@%u" % (name
, stack
)
187 print('\tGL_STUB(%s, %d, %s)' % (name
, f
.offset
, alt
))
189 if not f
.is_static_entry_point(f
.name
):
190 print('\tHIDDEN(GL_PREFIX(%s, %s))' % (name
, alt
))
193 for f
in api
.functionIterateByOffset():
194 name
= f
.dispatch_name()
195 stack
= self
.get_stack_size(f
)
196 alt
= "%s@%u" % (name
, stack
)
198 for n
in f
.entry_points
:
199 if f
.is_static_entry_point(n
):
201 alt2
= "%s@%u" % (n
, stack
)
202 text
= '\tGL_STUB_ALIAS(%s, %d, %s, %s, %s)' % (n
, f
.offset
, alt2
, name
, alt
)
204 if f
.has_different_protocol(n
):
205 print('#ifndef GLX_INDIRECT_RENDERING')
214 parser
= argparse
.ArgumentParser()
215 parser
.add_argument('-f',
217 default
='gl_API.xml',
218 help='An XML file describing an API.')
219 return parser
.parse_args()
224 printer
= PrintGenericStubs()
226 api
= gl_XML
.parse_GL_API(args
.filename
, glX_XML
.glx_item_factory())
230 if __name__
== '__main__':