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tools/nolibc: make argc 32-bit in riscv startup code

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The "ld a0, 0(sp)" instruction doesn't build on RISCV32 because that
would load a 64-bit value into a 32-bit register. But argc 32-bit,
not 64, so we ought to use "lw" here. Tested on both RISCV32 and
RISCV64.

Cc: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Willy Tarreau 2022-07-19 23:44:32 +02:00 committed by Paul E. McKenney
parent 568035b01c
commit a30d551f34
1 changed files with 1 additions and 1 deletions
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tools/include/nolibc/arch-riscv.h
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@ -190,7 +190,7 @@ __asm__ (".section .text\n"
".option norelax\n"
"lla gp, __global_pointer$\n"
".option pop\n"
"ld a0, 0(sp)\n" // argc (a0) was in the stack
"lw a0, 0(sp)\n" // argc (a0) was in the stack
"add a1, sp, "SZREG"\n" // argv (a1) = sp
"slli a2, a0, "PTRLOG"\n" // envp (a2) = SZREG*argc ...
"add a2, a2, "SZREG"\n" // + SZREG (skip null)