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46 lines
2.1 KiB
46 lines
2.1 KiB
commit 691f70b84a1284f35c8cf9fbf3ef3b1cec41c234 |
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Author: Vladislav Khmelevsky <och95@yandex.ru> |
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Date: Thu Nov 17 12:47:29 2022 +0400 |
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elf: Fix rtld-audit trampoline for aarch64 |
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This patch fixes two problems with audit: |
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1. The DL_OFFSET_RV_VPCS offset was mixed up with DL_OFFSET_RG_VPCS, |
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resulting in x2 register value nulling in RG structure. |
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2. We need to preserve the x8 register before function call, but |
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don't have to save it's new value and restore it before return. |
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Anyway the final restore was using OFFSET_RV instead of OFFSET_RG value |
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which is wrong (althoug doesn't affect anything). |
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> |
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(cherry picked from commit eb4181e9f4a512de37dad4ba623c921671584dea) |
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diff --git a/sysdeps/aarch64/dl-trampoline.S b/sysdeps/aarch64/dl-trampoline.S |
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index 457570e7df5148c0..b84c53d1a544c1b1 100644 |
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--- a/sysdeps/aarch64/dl-trampoline.S |
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+++ b/sysdeps/aarch64/dl-trampoline.S |
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@@ -298,12 +298,11 @@ _dl_runtime_profile: |
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stp x2, x3, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*1] |
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stp x4, x5, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*2] |
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stp x6, x7, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*3] |
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- str x8, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*4] |
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stp q0, q1, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*0] |
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stp q2, q3, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*1] |
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stp q4, q5, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*2] |
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stp q6, q7, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*3] |
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- str xzr, [X29, #OFFSET_RV + DL_OFFSET_RG_VPCS] |
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+ str xzr, [X29, #OFFSET_RV + DL_OFFSET_RV_VPCS] |
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/* Setup call to pltexit */ |
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ldp x0, x1, [x29, #OFFSET_SAVED_CALL_X0] |
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@@ -315,7 +314,6 @@ _dl_runtime_profile: |
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ldp x2, x3, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*1] |
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ldp x4, x5, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*2] |
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ldp x6, x7, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*3] |
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- ldr x8, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*4] |
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ldp q0, q1, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*0] |
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ldp q2, q3, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*1] |
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ldp q4, q5, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*2]
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