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Lazy compilation callback save / restore VFP registers.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59274 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-11-13 23:28:54 +00:00
parent d23e0f81bc
commit 28f312949e
1 changed files with 9 additions and 0 deletions
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9
lib/Target/ARM/ARMJITInfo.cpp
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@@ -60,6 +60,9 @@ extern "C" {
// whole compilation callback doesn't exist as far as the caller is // whole compilation callback doesn't exist as far as the caller is
// concerned, so we can't just preserve the callee saved regs. // concerned, so we can't just preserve the callee saved regs.
"stmdb sp!, {r0, r1, r2, r3, lr}\n" "stmdb sp!, {r0, r1, r2, r3, lr}\n"
#ifdef __APPLE__
"fstmfdd sp!, {d0, d1, d2, d3, d4, d5, d6, d7}\n"
#endif
// The LR contains the address of the stub function on entry. // The LR contains the address of the stub function on entry.
// pass it as the argument to the C part of the callback // pass it as the argument to the C part of the callback
"mov r0, lr\n" "mov r0, lr\n"
@@ -77,8 +80,14 @@ extern "C" {
// +--------+ // +--------+
// 1 | LR | Stub address (start of stub) // 1 | LR | Stub address (start of stub)
// 2-5 | R3..R0 | Saved registers (we need to preserve all regs) // 2-5 | R3..R0 | Saved registers (we need to preserve all regs)
// 6-20 | D0..D7 | Saved VFP registers
// +--------+ // +--------+
// //
#ifdef __APPLE__
// Restore VFP caller-saved registers.
"fldmfdd sp!, {d0, d1, d2, d3, d4, d5, d6, d7}\n"
#endif
//
// We need to exchange the values in slots 0 and 1 so we can // We need to exchange the values in slots 0 and 1 so we can
// return to the address in slot 1 with the address in slot 0 // return to the address in slot 1 with the address in slot 0
// restored to the LR. // restored to the LR.