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// Mark stack as non-executable
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack, "", @progbits
#endif
/* See i386/morestack.S for the lengthy, general explanation. */
.text
.globl rust_stack_exhausted
.globl __morestack
.hidden __morestack
.cfi_startproc
.set nomips16
.ent __morestack
__morestack:
.set noreorder
.set nomacro
// n.b. most of this is probably unnecessary. I know very little mips
// assembly, and I didn't have anything to test on, so I wasn't
// brave enough to try to trim this down.
addiu $29, $29, -12
sw $31, 8($29)
sw $30, 4($29)
sw $23, 0($29)
// 24 = 12 (current) + 12 (previous)
.cfi_def_cfa_offset 24
.cfi_offset 31, -4
.cfi_offset 30, -20
.cfi_offset 23, -24
move $23, $28
move $30, $29
.cfi_def_cfa_register 30
// Save argument registers of the original function
addiu $29, $29, -32
sw $4, 16($29)
sw $5, 20($29)
sw $6, 24($29)
sw $7, 28($29)
move $4, $14 // Size of stack arguments
addu $5, $30, 24 // Address of stack arguments
move $6, $15 // The amount of stack needed
move $28, $23
lw $25, %call16(rust_stack_exhausted)($23)
jalr $25
nop
// the above function make sure that we never get here
.end __morestack
.cfi_endproc
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