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SPM: Remove unnecessary register save 

Since commit 01fc1c24b9 ("BL31: Use helper function to save registers
in SMC handler") all the general-purpose registers are saved when
entering EL3. It isn't needed to save them here.

Change-Id: Ic540a5441b89b70888da587ab8fc3b2508cef8cc
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
This commit is contained in:
Antonio Nino Diaz 2019-02-14 11:40:19 +00:00
parent 3e310f30f2
commit 9efdbc2cd8
1 changed files with 0 additions and 8 deletions
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8
services/std_svc/spm/sprt.c
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@ -178,14 +178,6 @@ static uintptr_t sprt_smc_handler(uint32_t smc_fid, u_register_t x1,
SMC_RET1(handle, SPRT_VERSION_COMPILED);
case SPRT_PUT_RESPONSE_AARCH64:
/*
* Registers x1-x3 aren't saved by default to the context,
* but they are needed after spm_sp_synchronous_exit() because
* they hold return values.
*/
SMC_SET_GP(handle, CTX_GPREG_X1, x1);
SMC_SET_GP(handle, CTX_GPREG_X2, x2);
SMC_SET_GP(handle, CTX_GPREG_X3, x3);
spm_sp_synchronous_exit(SPRT_PUT_RESPONSE_AARCH64);
case SPRT_YIELD_AARCH64: