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diff --git a/src/mesa/glapi/gl_x86-64_asm.py b/src/mesa/glapi/gl_x86-64_asm.py
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+#!/usr/bin/env python
+
+# (C) Copyright IBM Corporation 2005
+# All Rights Reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# on the rights to use, copy, modify, merge, publish, distribute, sub
+# license, and/or sell copies of the Software, and to permit persons to whom
+# the Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+#
+# Authors:
+# Ian Romanick <idr@us.ibm.com>
+
+import gl_XML, license
+import sys, getopt, copy
+
+def should_use_push(registers):
+ for [reg, offset] in registers:
+ if reg[1:4] == "xmm":
+ return 0
+
+ N = len(registers)
+ return (N & 1) != 0
+
+
+def local_size(registers):
+ # The x86-64 ABI says "the value (%rsp - 8) is always a multiple of
+ # 16 when control is transfered to the function entry point." This
+ # means that the local stack usage must be (16*N)+8 for some value
+ # of N. (16*N)+8 = (8*(2N))+8 = 8*(2N+1). As long as N is odd, we
+ # meet this requirement.
+
+ N = (len(registers) | 1)
+ return 8*N
+
+
+def save_all_regs(registers):
+ adjust_stack = 0
+ if not should_use_push(registers):
+ adjust_stack = local_size(registers)
+ print '\tsubq\t$%u, %%rsp' % (adjust_stack)
+
+ for [reg, stack_offset] in registers:
+ save_reg( reg, stack_offset, adjust_stack )
+ return
+
+
+def restore_all_regs(registers):
+ adjust_stack = 0
+ if not should_use_push(registers):
+ adjust_stack = local_size(registers)
+
+ temp = copy.deepcopy(registers)
+ while len(temp):
+ [reg, stack_offset] = temp.pop()
+ restore_reg(reg, stack_offset, adjust_stack)
+
+ if adjust_stack:
+ print '\taddq\t$%u, %%rsp' % (adjust_stack)
+ return
+
+
+def save_reg(reg, offset, use_move):
+ if use_move:
+ if offset == 0:
+ print '\tmovq\t%s, (%%rsp)' % (reg)
+ else:
+ print '\tmovq\t%s, %u(%%rsp)' % (reg, offset)
+ else:
+ print '\tpushq\t%s' % (reg)
+
+ return
+
+
+def restore_reg(reg, offset, use_move):
+ if use_move:
+ if offset == 0:
+ print '\tmovq\t(%%rsp), %s' % (reg)
+ else:
+ print '\tmovq\t%u(%%rsp), %s' % (offset, reg)
+ else:
+ print '\tpopq\t%s' % (reg)
+
+ return
+
+
+class PrintGenericStubs(gl_XML.gl_print_base):
+
+ def __init__(self):
+ gl_XML.gl_print_base.__init__(self)
+
+ self.name = "gl_x86-64_asm.py (from Mesa)"
+ self.license = license.bsd_license_template % ("(C) Copyright IBM Corporation 2005", "IBM")
+ return
+
+
+ def get_stack_size(self, f):
+ size = 0
+ for p in f.parameterIterator():
+ size += p.get_stack_size()
+
+ return size
+
+
+ def printRealHeader(self):
+ print "/* If we build with gcc's -fvisibility=hidden flag, we'll need to change"
+ print " * the symbol visibility mode to 'default'."
+ print ' */'
+ print ''
+ print '#include "../x86/assyntax.h"'
+ print ''
+ print '#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303'
+ print '# pragma GCC visibility push(default)'
+ print '# define HIDDEN(x) .hidden x'
+ print '#else'
+ print '# define HIDDEN(x)'
+ print '#endif'
+ print ''
+ print '# if defined(USE_MGL_NAMESPACE)'
+ print '# define GL_PREFIX(n) GLNAME(CONCAT(mgl,n))'
+ print '# else'
+ print '# define GL_PREFIX(n) GLNAME(CONCAT(gl,n))'
+ print '# endif'
+ print ''
+ print '#if defined(PTHREADS) || defined(USE_XTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || defined(BEOS_THREADS)'
+ print '# define THREADS'
+ print '#endif'
+ print ''
+ print '\t.text'
+ print ''
+ print '#ifdef GLX_USE_TLS'
+ print ''
+ print '\t.globl _x86_64_get_get_dispatch; HIDDEN(_x86_64_get_get_dispatch)'
+ print '_x86_64_get_get_dispatch:'
+ print '\tlea\t_x86_64_get_dispatch(%rip), %rax'
+ print '\tret'
+ print ''
+ print '\t.p2align\t4,,15'
+ print '_x86_64_get_dispatch:'
+ print '\tmovq\t_glapi_tls_Dispatch@GOTTPOFF(%rip), %rax'
+ print '\tmovq\t%fs:(%rax), %rax'
+ print '\tret'
+ print '\t.size\t_x86_64_get_dispatch, .-_x86_64_get_dispatch'
+ print ''
+ print '#elif defined(PTHREADS)'
+ print ''
+ print '\t.extern\t_glapi_Dispatch'
+ print '\t.extern\t_gl_DispatchTSD'
+ print '\t.extern\tpthread_getspecific'
+ print ''
+ print '\t.p2align\t4,,15'
+ print '_x86_64_get_dispatch:'
+ print '\tmovq\t_gl_DispatchTSD(%rip), %rdi'
+ print '\tjmp\tpthread_getspecific@PLT'
+ print ''
+ print '#elif defined(THREADS)'
+ print ''
+ print '\t.extern\t_glapi_get_dispatch'
+ print ''
+ print '#endif'
+ print ''
+ return
+
+
+ def printRealFooter(self):
+ print ''
+ print '#if defined(GLX_USE_TLS) && defined(__linux__)'
+ print ' .section ".note.ABI-tag", "a"'
+ print ' .p2align 2'
+ print ' .long 1f - 0f /* name length */'
+ print ' .long 3f - 2f /* data length */'
+ print ' .long 1 /* note length */'
+ print '0: .asciz "GNU" /* vendor name */'
+ print '1: .p2align 2'
+ print '2: .long 0 /* note data: the ABI tag */'
+ print ' .long 2,4,20 /* Minimum kernel version w/TLS */'
+ print '3: .p2align 2 /* pad out section */'
+ print '#endif /* GLX_USE_TLS */'
+ print ''
+ print '#if defined (__ELF__) && defined (__linux__)'
+ print ' .section .note.GNU-stack,"",%progbits'
+ print '#endif'
+ return
+
+
+ def printFunction(self, f):
+
+ # The x86-64 ABI divides function parameters into a couple
+ # classes. For the OpenGL interface, the only ones that are
+ # relevent are INTEGER and SSE. Basically, the first 8
+ # GLfloat or GLdouble parameters are placed in %xmm0 - %xmm7,
+ # the first 6 non-GLfloat / non-GLdouble parameters are placed
+ # in registers listed in int_parameters.
+ #
+ # If more parameters than that are required, they are passed
+ # on the stack. Therefore, we just have to make sure that
+ # %esp hasn't changed when we jump to the actual function.
+ # Since we're jumping to the function (and not calling it), we
+ # have to make sure of that anyway!
+
+ int_parameters = ["%rdi", "%rsi", "%rdx", "%rcx", "%r8", "%r9"]
+
+ int_class = 0
+ sse_class = 0
+ stack_offset = 0
+ registers = []
+ for p in f.parameterIterator():
+ type_name = p.get_base_type_string()
+
+ if p.is_pointer() or (type_name != "GLfloat" and type_name != "GLdouble"):
+ if int_class < 6:
+ registers.append( [int_parameters[int_class], stack_offset] )
+ int_class += 1
+ stack_offset += 8
+ else:
+ if sse_class < 8:
+ registers.append( ["%%xmm%u" % (sse_class), stack_offset] )
+ sse_class += 1
+ stack_offset += 8
+
+ if ((int_class & 1) == 0) and (sse_class == 0):
+ registers.append( ["%rbp", 0] )
+
+
+ print '\t.p2align\t4,,15'
+ print '\t.globl\tGL_PREFIX(%s)' % (f.name)
+ print '\t.type\tGL_PREFIX(%s), @function' % (f.name)
+ print 'GL_PREFIX(%s):' % (f.name)
+ print '#if defined(GLX_USE_TLS)'
+ print '\tcall\t_x86_64_get_dispatch@PLT'
+ print '\tmovq\t%u(%%rax), %%r11' % (f.offset * 8)
+ print '\tjmp\t*%r11'
+ print '#elif defined(PTHREADS)'
+
+ save_all_regs(registers)
+ print '\tcall\t_x86_64_get_dispatch@PLT'
+ restore_all_regs(registers)
+
+ if f.offset == 0:
+ print '\tmovq\t(%rax), %r11'
+ else:
+ print '\tmovq\t%u(%%rax), %%r11' % (f.offset * 8)
+
+ print '\tjmp\t*%r11'
+
+ print '#else'
+ print '\tmovq\t_glapi_Dispatch(%rip), %rax'
+ print '\ttestq\t%rax, %rax'
+ print '\tje\t1f'
+ print '\tmovq\t%u(%%rax), %%r11' % (f.offset * 8)
+ print '\tjmp\t*%r11'
+ print '1:'
+
+ save_all_regs(registers)
+ print '\tcall\t_glapi_get_dispatch'
+ restore_all_regs(registers)
+
+ print '\tmovq\t%u(%%rax), %%r11' % (f.offset * 8)
+ print '\tjmp\t*%r11'
+ print '#endif /* defined(GLX_USE_TLS) */'
+
+ print '\t.size\tGL_PREFIX(%s), .-GL_PREFIX(%s)' % (f.name, f.name)
+ print ''
+ return
+
+
+ def printBody(self, api):
+ for f in api.functionIterateByOffset():
+ self.printFunction(f)
+
+
+ for f in api.functionIterateByOffset():
+ for n in f.entry_points:
+ if n != f.name:
+ print '\t.globl GL_PREFIX(%s) ; .set GL_PREFIX(%s), GL_PREFIX(%s)' % (n, n, f.name)
+
+ return
+
+def show_usage():
+ print "Usage: %s [-f input_file_name] [-m output_mode]" % sys.argv[0]
+ sys.exit(1)
+
+if __name__ == '__main__':
+ file_name = "gl_API.xml"
+ mode = "generic"
+
+ try:
+ (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
+ except Exception,e:
+ show_usage()
+
+ for (arg,val) in args:
+ if arg == '-m':
+ mode = val
+ elif arg == "-f":
+ file_name = val
+
+ if mode == "generic":
+ printer = PrintGenericStubs()
+ else:
+ print "ERROR: Invalid mode \"%s\" specified." % mode
+ show_usage()
+
+ api = gl_XML.parse_GL_API( file_name )
+
+ printer.Print( api )