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5d2f4cb403
* alloca needs to be _alloca * int64_t and uint64_t are also defined in <sys/_types/_int64_t.h> but as long long, not as long, so adjust out <stddef.h> to agree on Darwin * define __APPLE_CC__ so that <TargetConditionals.h> correctly defines various macros like TARGET_OS_MAC and TARGET_CPU_X86_64
37 lines
571 B
ArmAsm
37 lines
571 B
ArmAsm
/* ---------------------------------------------- */
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/* alloca86_64.S */
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#ifdef __APPLE__
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#define alloca _alloca
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#endif
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.globl alloca
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alloca:
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pop %rdx
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#ifdef _WIN32
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mov %rcx,%rax
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#else
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mov %rdi,%rax
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#endif
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add $15,%rax
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and $-16,%rax
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jz p3
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#ifdef _WIN32
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p1:
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cmp $4096,%rax
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jbe p2
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test %rax,-4096(%rsp)
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sub $4096,%rsp
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sub $4096,%rax
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jmp p1
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p2:
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#endif
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sub %rax,%rsp
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mov %rsp,%rax
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p3:
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push %rdx
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ret
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/* ---------------------------------------------- */
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