1_stack_grow(3C) Standard C Library Functions _stack_grow(3C)
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6 _stack_grow - express an intention to extend the stack
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9 #include <ucontext.h>
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11 void *_stack_grow(void *addr);
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15 The _stack_grow() function indicates to the system that the stack is
16 about to be extended to the address specified by addr. If extending the
17 stack to this address would violate the stack boundaries as retreived
18 by stack_getbounds(3C), a SIGSEGV is raised.
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21 If the disposition of SIGSEGV is SIG_DFL, the process is terminated and
22 a core dump is generated. If the application has installed its own
23 SIGSEGV handler to run on the alternate signal stack, the signal infor‐
24 mation passed to the handler will be such that a call to stack_viola‐
25 tion(3C) with these parameters returns 1.
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28 The addr argument is a biased stack pointer value. See the Solaris
29 64-bit Developer's Guide.
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32 This function has no effect if the specified address, addr, is within
33 the bounds of the current stack.
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36 If the _stack_grow() function succeeds and does not detect a stack
37 violation, it returns addr.
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40 No errors are defined.
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43 The _stack_grow() function does not actually adjust the stack pointer
44 register. The caller is responsible for manipulating the stack pointer
45 register once _stack_grow() returns.
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48 The _stack_grow() function is typically invoked by code created by the
49 compilation environment prior to executing code that modifies the stack
50 pointer. It can also be used by hand-written assembly routines to allo‐
51 cate stack-based storage safely.
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54 See attributes(5) for descriptions of the following attributes:
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59 ┌─────────────────────────────┬─────────────────────────────┐
60 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
61 ├─────────────────────────────┼─────────────────────────────┤
62 │Interface Stability │Evolving │
63 ├─────────────────────────────┼─────────────────────────────┤
64 │MT-Level │Async-Signal-Safe │
65 └─────────────────────────────┴─────────────────────────────┘
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68 stack_getbounds(3C), stack_inbounds(3C), stack_violation(3C),
69 attributes(5)
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72 Solaris 64-bit Developer's Guide
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76SunOS 5.11 18 Jul 2002 _stack_grow(3C)