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authorSoby Mathew <soby.mathew@arm.com>2018-11-16 15:43:34 +0000
committerSoby Mathew <soby.mathew@arm.com>2018-12-05 10:40:08 +0000
commit01fc1c24b9a03c519efae4d006a71c350c0529fa (patch)
treec6bf51fa11d0b4e8c59dd2c968f88b329d4b12b4 /bl31
parent6d422c3e2b80cf4de96b5ad824e84382be5fa52f (diff)
downloadtrusted-firmware-a-01fc1c24b9a03c519efae4d006a71c350c0529fa.tar.gz
BL31: Use helper function to save registers in SMC handler
Use the helper function `save_gp_registers` to save the register state to cpu_context on entry to EL3 in SMC handler. This has the effect of saving x0 - x3 as well into the cpu_context which was not done previously but it unifies the register save sequence in BL31. Change-Id: I5753c942263a5f9178deda3dba896e3220f3dd83 Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Diffstat (limited to 'bl31')
-rw-r--r--bl31/aarch64/runtime_exceptions.S18
1 files changed, 1 insertions, 17 deletions
diff --git a/bl31/aarch64/runtime_exceptions.S b/bl31/aarch64/runtime_exceptions.S
index 54db6814d5..77bd63ec08 100644
--- a/bl31/aarch64/runtime_exceptions.S
+++ b/bl31/aarch64/runtime_exceptions.S
@@ -356,24 +356,8 @@ smc_handler64:
* We already have x0-x4 in place. x5 will point to a cookie (not used
* now). x6 will point to the context structure (SP_EL3) and x7 will
* contain flags we need to pass to the handler.
- *
- * Save x4-x29 and sp_el0.
*/
- stp x4, x5, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X4]
- stp x6, x7, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X6]
- stp x8, x9, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X8]
- stp x10, x11, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X10]
- stp x12, x13, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X12]
- stp x14, x15, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X14]
- stp x16, x17, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X16]
- stp x18, x19, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X18]
- stp x20, x21, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X20]
- stp x22, x23, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X22]
- stp x24, x25, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X24]
- stp x26, x27, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X26]
- stp x28, x29, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X28]
- mrs x18, sp_el0
- str x18, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_SP_EL0]
+ bl save_gp_registers
mov x5, xzr
mov x6, sp