gccint: Registers

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1 18.7 Register Usage
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1 This section explains how to describe what registers the target machine
1 has, and how (in general) they can be used.
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1  The description of which registers a specific instruction can use is
1 done with register classes; see ⇒Register Classes.  For
DONTPRINTYET 11 information on using registers to access a stack frame, see ⇒Frame
 Registers.  For passing values in registers, see *noteRegister
DONTPRINTYET 1DONTPRINTYET 11 information on using registers to access a stack frame, see ⇒Frame
 Registers.  For passing values in registers, see ⇒Register

 Arguments.  For returning values in registers, see *noteScalar
1DONTPRINTYET 1DONTPRINTYET 11 information on using registers to access a stack frame, see ⇒Frame
 Registers.  For passing values in registers, see ⇒Register

 Arguments.  For returning values in registers, see ⇒Scalar

 Return.
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Menu

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· Register Basics             Number and kinds of registers.
· Allocation Order            Order in which registers are allocated.
· Values in Registers         What kinds of values each reg can hold.
· Leaf Functions              Renumbering registers for leaf functions.
· Stack Registers             Handling a register stack such as 80387.
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