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[PATCH-for-8.0 v2 05/11] hw/mips/bootloader: Implement nanoMIPS JALRc op
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH-for-8.0 v2 05/11] hw/mips/bootloader: Implement nanoMIPS JALRc opcode generator |
Date: |
Sun, 11 Dec 2022 21:45:27 +0100 |
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
hw/mips/bootloader.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/hw/mips/bootloader.c b/hw/mips/bootloader.c
index 9fc926d83f..1dd6ef2096 100644
--- a/hw/mips/bootloader.c
+++ b/hw/mips/bootloader.c
@@ -129,7 +129,17 @@ static void bl_gen_dsll(void **p, bl_reg rd, bl_reg rt,
uint8_t sa)
static void bl_gen_jalr(void **p, bl_reg rs)
{
- bl_gen_r_type(p, 0, rs, 0, BL_REG_RA, 0, 0x09);
+ if (bootcpu_supports_isa(ISA_NANOMIPS32)) {
+ uint32_t insn = 0;
+
+ insn = deposit32(insn, 26, 6, 0b010010); /* JALRC */
+ insn = deposit32(insn, 21, 5, BL_REG_RA);
+ insn = deposit32(insn, 16, 5, rs);
+
+ st_nm32_p(p, insn);
+ } else {
+ bl_gen_r_type(p, 0, rs, 0, BL_REG_RA, 0, 0x09);
+ }
}
static void bl_gen_lui_nm(void **ptr, bl_reg rt, uint32_t imm20)
--
2.38.1
- [PATCH-for-8.0 v2 00/11] hw/mips/malta: Generate nanoMIPS bootloader with bootloader generator API, Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 01/11] hw/mips/bootloader: Handle buffers as opaque arrays, Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 02/11] hw/mips/bootloader: Implement nanoMIPS NOP opcode generator, Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 03/11] hw/mips/bootloader: Implement nanoMIPS SW opcode generator, Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 04/11] hw/mips/bootloader: Implement nanoMIPS LI (LUI+ORI) opcode generator, Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 05/11] hw/mips/bootloader: Implement nanoMIPS JALRc opcode generator,
Philippe Mathieu-Daudé <=
- [PATCH-for-8.0 v2 06/11] hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (1/5), Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 07/11] hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (2/5), Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 08/11] hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (3/5), Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 09/11] hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (4/5), Philippe Mathieu-Daudé, 2022/12/11
- [PATCH-for-8.0 v2 10/11] hw/mips/malta: Use bootloader generator API for nanoMIPS CPUs (5/5), Philippe Mathieu-Daudé, 2022/12/11