diff options
| -rw-r--r-- | payloads/libpayload/arch/arm64/head.S | 19 | ||||
| -rw-r--r-- | payloads/libpayload/arch/arm64/libpayload.ldscript | 5 |
2 files changed, 15 insertions, 9 deletions
diff --git a/payloads/libpayload/arch/arm64/head.S b/payloads/libpayload/arch/arm64/head.S index 214c5d7253..349dfd43ee 100644 --- a/payloads/libpayload/arch/arm64/head.S +++ b/payloads/libpayload/arch/arm64/head.S @@ -38,24 +38,23 @@ ENTRY(_entry) ldr x1, 1f str x0, [x1] - /* TODO: disable interrupts */ + /* Setup exception stack */ + ldr x1, 3f + msr SPSel, #1 + isb - /* TODO: Clear BSS */ + mov sp, x1 /* Setup new stack */ ldr x1, 2f - mov sp, x1 + msr SPSel, #0 + isb - /* TODO: Save old stack pointer and link register */ + mov sp, x1 /* Let's rock. */ bl start_main - /* %r0 has the return value - pass it on unmolested */ - - /* TODO: restore old stack pointer and link register */ - - /* Return to the original context. */ ret ENDPROC(_entry) @@ -64,3 +63,5 @@ ENDPROC(_entry) .quad cb_header_ptr 2: .quad _stack +3: +.quad _exc_stack diff --git a/payloads/libpayload/arch/arm64/libpayload.ldscript b/payloads/libpayload/arch/arm64/libpayload.ldscript index 41a2e89faa..1b4395f7b6 100644 --- a/payloads/libpayload/arch/arm64/libpayload.ldscript +++ b/payloads/libpayload/arch/arm64/libpayload.ldscript @@ -82,6 +82,11 @@ SECTIONS . += STACK_SIZE; . = ALIGN(16); _stack = .; + + _exc_estack = .; + . += STACK_SIZE; + . = ALIGN(16); + _exc_stack = .; } _end = .; |