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arm: x29 is frame register

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Ciro Santilli 六四事件 法轮功
2019-11-13 00:00:00 +00:00
parent bb552d00a4
commit f92432e272
1 changed files with 4 additions and 0 deletions
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4
userland/arch/aarch64/registers.S
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@@ -34,6 +34,10 @@ LKMC_PROLOGUE
mov x26, 26 mov x26, 26
mov x27, 27 mov x27, 27
mov x28, 28 mov x28, 28
/* x29 is used as the frame register by unoptimized GCC: it contains the initial stack.
* TODO is there a standard recommending it? Does it have effects e.g. on GDB in
* determining backtraces? */
mov x29, 29 mov x29, 29
/* x30 is the link register. BL stores the return address here. */ /* x30 is the link register. BL stores the return address here. */