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[PATCH-for-8.0 v2 03/11] hw/mips/bootloader: Implement nanoMIPS SW opcod
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH-for-8.0 v2 03/11] hw/mips/bootloader: Implement nanoMIPS SW opcode generator |
Date: |
Sun, 11 Dec 2022 21:45:25 +0100 |
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
hw/mips/bootloader.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/hw/mips/bootloader.c b/hw/mips/bootloader.c
index 0035f37335..3e1e73360f 100644
--- a/hw/mips/bootloader.c
+++ b/hw/mips/bootloader.c
@@ -143,9 +143,27 @@ static void bl_gen_ori(void **p, bl_reg rt, bl_reg rs,
uint16_t imm)
bl_gen_i_type(p, 0x0d, rs, rt, imm);
}
+static void bl_gen_sw_nm(void **ptr, bl_reg rt, uint8_t rs, uint16_t ofs12)
+{
+ uint32_t insn = 0;
+
+ assert(extract32(ofs12, 0, 12) == ofs12);
+ insn = deposit32(insn, 26, 6, 0b100001);
+ insn = deposit32(insn, 21, 5, rt);
+ insn = deposit32(insn, 16, 5, rs);
+ insn = deposit32(insn, 12, 4, 0b1001);
+ insn = deposit32(insn, 0, 12, ofs12);
+
+ st_nm32_p(ptr, insn);
+}
+
static void bl_gen_sw(void **p, bl_reg rt, uint8_t base, uint16_t offset)
{
- bl_gen_i_type(p, 0x2b, base, rt, offset);
+ if (bootcpu_supports_isa(ISA_NANOMIPS32)) {
+ bl_gen_sw_nm(p, rt, base, offset);
+ } else {
+ bl_gen_i_type(p, 0x2b, base, rt, offset);
+ }
}
static void bl_gen_sd(void **p, bl_reg rt, uint8_t base, uint16_t offset)
--
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 <=
- [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, 2022/12/11
- [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