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# Startup Code for the Morpho mt
# Create a label for the start of the eh_frame section.
.section .eh_frame
__eh_frame_begin:
.section .text
.global _start
_start:
;; Initialise the stack pointer
ldui sp, #%hi16(__stack)
addui sp, sp, #%lo16(__stack)
or fp, sp, sp
;; Zero the data space
ldui r9, #%hi16(_edata)
addui r9, r9, #%lo16(_edata)
ldui r10, #%hi16(_end)
addui r10, r10, #%lo16(_end)
addi r5, r0, #0
.L0:
stw r5, r9, #0
addi r9, r9, #4
or r0, r0, r0 ; nop
brle r9, r10, .L0
or r0, r0, r0 ; nop
;; Call global and static constructors
ldui r10, #%hi16(_init)
addui r10, r10, #%lo16(_init)
or r0, r0, r0 ; nop
jal r14, r10
or r0, r0, r0 ; nop
;; Setup destructors to be called from exit.
;; (Just in case main never returns....)
ldui r10, #%hi16(atexit)
addui r10, r10, #%lo16(atexit)
ldui r1, #%hi16(_fini)
addui r1, r1, #%lo16(_fini)
or r0, r0, r0 ; nop
jal r14, r10
or r0, r0, r0 ; nop
;; Initialise argc, argv and envp to empty
addi r1, r0, #0
addi r2, r0, #0
addi r3, r0, #0
;; Call main
ldui r10, #%hi16(main)
addui r10, r10, #%lo16(main)
or r0, r0, r0 ; nop
jal r14, r10
or r0, r0, r0 ; nop
;; Jump to exit
ldui r10, #%hi16(exit)
addui r10, r10, #%lo16(exit)
or r0, r0, r0 ; nop
jal r14, r10
or r0, r0, r0 ; nop
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