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[RESEND PATCH 2/6] disas/nanomips: Merge insn{1,2,3} into words[3]
From: |
Richard Henderson |
Subject: |
[RESEND PATCH 2/6] disas/nanomips: Merge insn{1,2,3} into words[3] |
Date: |
Sun, 6 Nov 2022 13:37:31 +1100 |
Since Disassemble wants the data in this format, collect
it that way. This allows using a loop to print the bytes.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
disas/nanomips.c | 44 +++++++++++++++++++++-----------------------
1 file changed, 21 insertions(+), 23 deletions(-)
diff --git a/disas/nanomips.c b/disas/nanomips.c
index 9a69e6880a..5438def9af 100644
--- a/disas/nanomips.c
+++ b/disas/nanomips.c
@@ -21905,12 +21905,8 @@ static const Pool MAJOR[2] = {
0x0 }, /* P16 */
};
-static bool nanomips_dis(char **buf, Dis_info *info,
- unsigned short one,
- unsigned short two,
- unsigned short three)
+static bool nanomips_dis(char **buf, Dis_info *info, uint16_t words[3])
{
- uint16 bits[3] = {one, two, three};
TABLE_ENTRY_TYPE type;
int ret;
@@ -21919,7 +21915,7 @@ static bool nanomips_dis(char **buf, Dis_info *info,
return false;
}
- ret = Disassemble(bits, buf, &type, MAJOR, 2, info);
+ ret = Disassemble(words, buf, &type, MAJOR, 2, info);
return ret >= 0;
}
@@ -21927,7 +21923,7 @@ int print_insn_nanomips(bfd_vma memaddr, struct
disassemble_info *info)
{
int status, length;
bfd_byte buffer[2];
- uint16_t insn1 = 0, insn2 = 0, insn3 = 0;
+ uint16_t words[3] = { };
g_autofree char *buf = NULL;
info->bytes_per_chunk = 2;
@@ -21951,15 +21947,14 @@ int print_insn_nanomips(bfd_vma memaddr, struct
disassemble_info *info)
}
if (info->endian == BFD_ENDIAN_BIG) {
- insn1 = bfd_getb16(buffer);
+ words[0] = bfd_getb16(buffer);
} else {
- insn1 = bfd_getl16(buffer);
+ words[0] = bfd_getl16(buffer);
}
length = 2;
- (*info->fprintf_func)(info->stream, "%04x ", insn1);
/* Handle 32-bit opcodes. */
- if ((insn1 & 0x1000) == 0) {
+ if ((words[0] & 0x1000) == 0) {
status = (*info->read_memory_func)(memaddr + 2, buffer, 2, info);
if (status != 0) {
(*info->memory_error_func)(status, memaddr + 2, info);
@@ -21967,17 +21962,15 @@ int print_insn_nanomips(bfd_vma memaddr, struct
disassemble_info *info)
}
if (info->endian == BFD_ENDIAN_BIG) {
- insn2 = bfd_getb16(buffer);
+ words[1] = bfd_getb16(buffer);
} else {
- insn2 = bfd_getl16(buffer);
+ words[1] = bfd_getl16(buffer);
}
length = 4;
- (*info->fprintf_func)(info->stream, "%04x ", insn2);
- } else {
- (*info->fprintf_func)(info->stream, " ");
}
+
/* Handle 48-bit opcodes. */
- if ((insn1 >> 10) == 0x18) {
+ if ((words[0] >> 10) == 0x18) {
status = (*info->read_memory_func)(memaddr + 4, buffer, 2, info);
if (status != 0) {
(*info->memory_error_func)(status, memaddr + 4, info);
@@ -21985,18 +21978,23 @@ int print_insn_nanomips(bfd_vma memaddr, struct
disassemble_info *info)
}
if (info->endian == BFD_ENDIAN_BIG) {
- insn3 = bfd_getb16(buffer);
+ words[2] = bfd_getb16(buffer);
} else {
- insn3 = bfd_getl16(buffer);
+ words[2] = bfd_getl16(buffer);
}
length = 6;
- (*info->fprintf_func)(info->stream, "%04x ", insn3);
- } else {
- (*info->fprintf_func)(info->stream, " ");
+ }
+
+ for (int i = 0; i < 6; i += 2) {
+ if (i < length) {
+ (*info->fprintf_func)(info->stream, "%04x ", words[i / 2]);
+ } else {
+ (*info->fprintf_func)(info->stream, " ");
+ }
}
/* Handle runtime errors. */
- if (nanomips_dis(&buf, &disassm_info, insn1, insn2, insn3)) {
+ if (nanomips_dis(&buf, &disassm_info, words)) {
(*info->fprintf_func) (info->stream, "%s", buf);
}
--
2.34.1
- [RESEND PATCH 0/6] Two -Wclobbered fixes, plus other cleanup, Richard Henderson, 2022/11/05
- [RESEND PATCH 1/6] disas/nanomips: Move setjmp into nanomips_dis, Richard Henderson, 2022/11/05
- [RESEND PATCH 2/6] disas/nanomips: Merge insn{1,2,3} into words[3],
Richard Henderson <=
- [RESEND PATCH 3/6] disas/nanomips: Split out read_u16, Richard Henderson, 2022/11/05
- [RESEND PATCH 4/6] disas/nanomips: Tidy read for 48-bit opcodes, Richard Henderson, 2022/11/05
- [RESEND PATCH 5/6] tcg: Move TCG_TARGET_HAS_direct_jump init to tb_gen_code, Richard Henderson, 2022/11/05
- [RESEND PATCH 6/6] accel/tcg: Split out setjmp_gen_code, Richard Henderson, 2022/11/05