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kern: fix 32-bit light ipc svc handler asm

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Nintendo used to do what we were doing because the function wasn't directly in the handler table,
but we've always been directly in the handler table, so we were trashing the last four arguments to light ipc
when called from aarch32. Nothing uses this, but needed to be fixed.
This commit is contained in:
Michael Scire 2021-10-28 15:42:52 -07:00
parent db3004e844
commit 92321ccbc8
1 changed files with 0 additions and 17 deletions
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17
libraries/libmesosphere/source/arch/arm64/svc/kern_svc_light_ipc_asm.s
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@ -50,10 +50,6 @@ _ZN3ams4kern3svc26CallSendSyncRequestLight64Ev:
.global _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev
.type _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev, %function
_ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev:
/* Load x4-x7 from where the svc handler stores them. */
ldp x4, x5, [sp, #(8 * 0)]
ldp x6, x7, [sp, #(8 * 2)]
/* Allocate space for the light ipc data. */
sub sp, sp, #(4 * 8)
@ -78,13 +74,8 @@ _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev:
/* Free the stack space for the light ipc data. */
add sp, sp, #(4 * 8)
/* Save x4-x7 to where the svc handler stores them. */
stp x4, x5, [sp, #(8 * 0)]
stp x6, x7, [sp, #(8 * 2)]
ret
/* ams::kern::svc::CallReplyAndReceiveLight64() */
.section .text._ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev, "ax", %progbits
.global _ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev
@ -121,10 +112,6 @@ _ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev:
.global _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev
.type _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev, %function
_ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev:
/* Load x4-x7 from where the svc handler stores them. */
ldp x4, x5, [sp, #(8 * 0)]
ldp x6, x7, [sp, #(8 * 2)]
/* Allocate space for the light ipc data. */
sub sp, sp, #(4 * 8)
@ -149,8 +136,4 @@ _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev:
/* Free the stack space for the light ipc data. */
add sp, sp, #(4 * 8)
/* Save x4-x7 to where the svc handler stores them. */
stp x4, x5, [sp, #(8 * 0)]
stp x6, x7, [sp, #(8 * 2)]
ret