// An example of thunk generation that takes the maximum number of permitted // passes to converge. We start with a set of branches of which all but one are // in range. Any thunk added to extend the range of a branch is inserted in // between the branches and the targets which knocks some more branches out // of range. At the end of 9 passes of createThunks() every branch has a // range extension thunk, allowing the final pass to check that no more thunks // are required. // // As the size of the .text section changes 9 times, the symbol sym which // depends on the size of .text will be updated 9 times. This test checks that // any iteration limit to updating symbols does not limit thunk convergence. // up to its pass limit without .thumb .section .text.00, "ax", %progbits .globl _start .thumb_func _start: b.w f2 b.w f2 b.w f3 b.w f3 b.w f4 b.w f4 b.w f5 b.w f5 b.w f6 b.w f6 b.w f7 b.w f7 b.w f8 b.w f8 b.w f9 b.w f9 b.w f10 b.w f10 .section .text.01, "ax", %progbits .space 14 * 1024 * 1024 // Thunks are inserted here, initially only 1 branch is out of range and needs // a thunk. However the added thunk is 4-bytes in size which makes another // branch out of range, which adds another thunk ... .section .text.02, "ax", %progbits .space (2 * 1024 * 1024) - 68 .thumb_func f2: bx lr nop .thumb_func f3: bx lr nop .thumb_func f4: bx lr nop .thumb_func f5: bx lr nop .thumb_func f6: bx lr nop .thumb_func f7: bx lr nop .thumb_func f8: bx lr nop .thumb_func f9: bx lr nop .thumb_func f10: bx lr nop