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Diffstat (limited to 'doc/supplements/sparc/callconv.t')
| -rw-r--r-- | doc/supplements/sparc/callconv.t | 57 |
1 files changed, 1 insertions, 56 deletions
diff --git a/doc/supplements/sparc/callconv.t b/doc/supplements/sparc/callconv.t index 3ec25bbee1..030f9f9b5a 100644 --- a/doc/supplements/sparc/callconv.t +++ b/doc/supplements/sparc/callconv.t @@ -6,26 +6,8 @@ @c $Id$ @c -@ifinfo -@node Calling Conventions, Calling Conventions Introduction, CPU Model Dependent Features CPU Model Implementation Notes, Top -@end ifinfo @chapter Calling Conventions -@ifinfo -@menu -* Calling Conventions Introduction:: -* Calling Conventions Programming Model:: -* Calling Conventions Register Windows:: -* Calling Conventions Call and Return Mechanism:: -* Calling Conventions Calling Mechanism:: -* Calling Conventions Register Usage:: -* Calling Conventions Parameter Passing:: -* Calling Conventions User-Provided Routines:: -@end menu -@end ifinfo - -@ifinfo -@node Calling Conventions Introduction, Calling Conventions Programming Model, Calling Conventions, Calling Conventions -@end ifinfo + @section Introduction Each high-level language compiler generates @@ -48,24 +30,11 @@ target processor are the same, different compilers may use different calling conventions. As a result, calling conventions are both processor and compiler dependent. -@ifinfo -@node Calling Conventions Programming Model, Non-Floating Point Registers, Calling Conventions Introduction, Calling Conventions -@end ifinfo @section Programming Model -@ifinfo -@menu -* Non-Floating Point Registers:: -* Floating Point Registers:: -* Special Registers:: -@end menu -@end ifinfo This section discusses the programming model for the SPARC architecture. -@ifinfo -@node Non-Floating Point Registers, Floating Point Registers, Calling Conventions Programming Model, Calling Conventions Programming Model -@end ifinfo @subsection Non-Floating Point Registers The SPARC architecture defines thirty-two @@ -224,9 +193,6 @@ describes the role of each of these registers: @end ifset -@ifinfo -@node Floating Point Registers, Special Registers, Non-Floating Point Registers, Calling Conventions Programming Model -@end ifinfo @subsection Floating Point Registers The SPARC V7 architecture includes thirty-two, @@ -260,9 +226,6 @@ outstanding instructions and by floating point exception handlers with the store double floating point queue (stdfq) instruction. -@ifinfo -@node Special Registers, Calling Conventions Register Windows, Floating Point Registers, Calling Conventions Programming Model -@end ifinfo @subsection Special Registers The SPARC architecture includes two special registers @@ -276,9 +239,6 @@ the psr and wim register are used to manage the register windows in the SPARC architecture. The register windows are discussed in more detail below. -@ifinfo -@node Calling Conventions Register Windows, Calling Conventions Call and Return Mechanism, Special Registers, Calling Conventions -@end ifinfo @section Register Windows The SPARC architecture includes the concept of @@ -370,9 +330,6 @@ those parameters are available in its input registers. This is a very efficient way to pass parameters as no data is actually moved by the save or restore instructions. -@ifinfo -@node Calling Conventions Call and Return Mechanism, Calling Conventions Calling Mechanism, Calling Conventions Register Windows, Calling Conventions -@end ifinfo @section Call and Return Mechanism The SPARC architecture supports a simple yet @@ -394,17 +351,11 @@ call and return mechanism does not automatically save and restore any registers. This is accomplished via the save and restore instructions which manage the set of registers windows. -@ifinfo -@node Calling Conventions Calling Mechanism, Calling Conventions Register Usage, Calling Conventions Call and Return Mechanism, Calling Conventions -@end ifinfo @section Calling Mechanism All RTEMS directives are invoked using the regular SPARC calling convention via the call instruction. -@ifinfo -@node Calling Conventions Register Usage, Calling Conventions Parameter Passing, Calling Conventions Calling Mechanism, Calling Conventions -@end ifinfo @section Register Usage As discussed above, the call instruction does not @@ -414,9 +365,6 @@ windows. When a register window is allocated, the new set of local registers are available for the exclusive use of the subroutine which allocated this register set. -@ifinfo -@node Calling Conventions Parameter Passing, Calling Conventions User-Provided Routines, Calling Conventions Register Usage, Calling Conventions -@end ifinfo @section Parameter Passing RTEMS assumes that arguments are placed in the @@ -436,9 +384,6 @@ load first argument into o0 invoke directive @end example -@ifinfo -@node Calling Conventions User-Provided Routines, Memory Model, Calling Conventions Parameter Passing, Calling Conventions -@end ifinfo @section User-Provided Routines All user-provided routines invoked by RTEMS, such as |