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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2024-11-23 09:47:52 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2025-01-05 02:30:47 +0100 |
| commit | 9eb59201ab60b7ca3af41cd3000f8ff823ae5f02 (patch) | |
| tree | 4b7532a7311ad6cbdf92eb6c11d3cd1c4210fa56 | |
| parent | 6f7f47e8c09aac1a81a1cf5cf2d2c9fadcb9e662 (diff) | |
examples: implement _start and syscall for RISC-V
To build the API examples on RISC-V we need to
implement _start and syscall for RISC-V.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
| -rw-r--r-- | examples/api/crt0.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/examples/api/crt0.S b/examples/api/crt0.S index f1b88ed8a3d..d2a97557817 100644 --- a/examples/api/crt0.S +++ b/examples/api/crt0.S @@ -80,6 +80,38 @@ syscall: return_addr: .align 8 .long 0 +#elif defined(CONFIG_ARCH_RV32I) + + .text + .globl _start +_start: + la t0, search_hint + sw sp, 0(t0) + la t0, main + jalr x0, t0 + + .globl syscall +syscall: + la t0, syscall_ptr + lw t0, 0(t0) + jalr x0, t0 + +#elif defined(CONFIG_ARCH_RV64I) + + .text + .globl _start +_start: + la t0, search_hint + sd sp, 0(t0) + la t0, main + jalr x0, t0 + + .globl syscall +syscall: + la t0, syscall_ptr + ld t0, 0(t0) + jalr x0, t0 + #else #error No support for this arch! #endif |