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rawpatchinlineside by side (parent: 3327327)
rawpatchinlineside by side (parent: 3327327)
| author | Aleksi Hannula <ahannula4+nixgit@gmail.com> | |
| Fri, 21 Nov 2025 07:32:14 +0000 (21 09:32 +0200) | ||
| committer | Aleksi Hannula <ahannula4+nixgit@gmail.com> | |
| Fri, 28 Nov 2025 13:17:06 +0000 (28 15:17 +0200) |
Previous sp can be computed based from only frame pointer and short
offset. ra and s0 can be restored from stack with constant fp offset.
offset. ra and s0 can be restored from stack with constant fp offset.
| riscv64-gen.c | patchblobblamehistory |
diff --git a/riscv64-gen.c b/riscv64-gen.c
--- a/riscv64-gen.c
+++ b/riscv64-gen.c
loc = (loc - num_va_regs * 8);
d = v = (-loc + 15) & -16;
- if (v >= (1 << 11)) {
- d = 16;
- o(0x37 | (5 << 7) | UPPER(v-16)); //lui t0, upper(v)
- EI(0x13, 0, 5, 5, SIGN11(v-16)); // addi t0, t0, lo(v)
- ER(0x33, 0, 2, 2, 5, 0); // add sp, sp, t0
- }
- EI(0x03, 3, 1, 2, d - 8 - num_va_regs * 8); // ld ra, v-8(sp)
- EI(0x03, 3, 8, 2, d - 16 - num_va_regs * 8); // ld s0, v-16(sp)
- EI(0x13, 0, 2, 2, d); // addi sp, sp, v
- EI(0x67, 0, 0, 1, 0); // jalr x0, 0(x1), aka ret
+ EI(0x13, 0, 2, 8, num_va_regs * 8); // addi sp, s0, num_va_regs*8
+ EI(0x03, 3, 1, 8, -8); // ld ra, -8(s0)
+ EI(0x03, 3, 8, 8, -16); // ld s0, -16(s0)
+ EI(0x67, 0, 0, 1, 0); // jalr x0, 0(x1), aka ret
+
large_ofs_ind = ind;
if (v >= (1 << 11)) {
+ d = 16;
EI(0x13, 0, 8, 2, d - num_va_regs * 8); // addi s0, sp, d
o(0x37 | (5 << 7) | UPPER(v-16)); //lui t0, upper(v)
EI(0x13, 0, 5, 5, SIGN11(v-16)); // addi t0, t0, lo(v)